---
OA_embargo: '12'
OA_place: publisher
_id: '19386'
abstract:
- lang: eng
  text: "Crustaceans are a large group of arthropods with a great diversity of species
    and\r\ndifferent types of sex determination systems and reproductive modes (Subramoniam,
    2017).\r\nThis makes them a great model for exploring the evolution of sex chromosomes
    and sexual\r\ndimorphism and investigating the evolutionary mechanisms driving
    and maintaining the\r\ndiversity of reproductive systems. Within this taxon, Brine
    shrimp of the genus Artemia, a\r\nbranchiopod crustacean, are well suited for
    such explorations, as they have both highly\r\ndimorphic traits and closely related
    sexual and asexual species. Although brine shrimp are\r\nknown to have ZW sex
    chromosomes (Bowen, 1963; Parraguez et al., 2009), the sex\r\nchromosomes are
    still not well characterized at the genomic level, the sex-determination gene\r\nis
    unknown, and it is still unclear whether the same sex chromosomes as shared by
    the\r\ndifferent species.\r\nThe first part of this thesis was to characterize
    the Z and W chromosomes in Artemia\r\nusing an array of methods, from generating
    multiple chromosome and contig level genome\r\nassemblies to identifying W-linked
    scaffolds and transcripts in multiple species using k-mer\r\nbased approaches.\r\nThe
    second part tackles the conservation of the cell type specific regulatory pathways\r\nin
    the female reproductive system between Artemia and Drosophila, and the expression
    of the\r\nZ-specific region throughout meiosis using single-nucleus RNA-seq data.
    Our results show\r\nthat germline cells lack dosage compensation, with a subset
    of cells showing evidence of\r\nextreme repression of the Z chromosome.\r\nWith
    multiple sexual species and several asexual lineages of parthenogenetic females\r\nthat
    produce rare males at low frequencies, Brine shrimp present the perfect opportunity
    to\r\nexplore the transition to asexuality and shed light on the prerequisites
    and repercussions of\r\nthe form of modified meiosis maintaining the asexual lineages.
    The last chapter is an\r\ninvestigation of the molecular pathways involved in
    asexual reproduction in Artemia using\r\nnewly generated single nucleus RNAseq
    and WGS data and previously published data. "
acknowledged_ssus:
- _id: ScienComp
acknowledgement: My PhD work was funded by the Austrian science fund (FWF), as part
  of the SFB Meiosis consortium (https://sfbmeiosis.org/, grant ID FWF SFB F88-10).
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Marwan N
  full_name: Elkrewi, Marwan N
  id: 0B46FACA-A8E1-11E9-9BD3-79D1E5697425
  last_name: Elkrewi
  orcid: 0000-0002-5328-7231
citation:
  ama: Elkrewi MN. Evolution of sex chromosomes, sex determination and asexuality
    in Artemia brine shrimp. 2025. doi:<a href="https://doi.org/10.15479/AT-ISTA-19386">10.15479/AT-ISTA-19386</a>
  apa: Elkrewi, M. N. (2025). <i>Evolution of sex chromosomes, sex determination and
    asexuality in Artemia brine shrimp</i>. Institute of Science and Technology Austria.
    <a href="https://doi.org/10.15479/AT-ISTA-19386">https://doi.org/10.15479/AT-ISTA-19386</a>
  chicago: Elkrewi, Marwan N. “Evolution of Sex Chromosomes, Sex Determination and
    Asexuality in Artemia Brine Shrimp.” Institute of Science and Technology Austria,
    2025. <a href="https://doi.org/10.15479/AT-ISTA-19386">https://doi.org/10.15479/AT-ISTA-19386</a>.
  ieee: M. N. Elkrewi, “Evolution of sex chromosomes, sex determination and asexuality
    in Artemia brine shrimp,” Institute of Science and Technology Austria, 2025.
  ista: Elkrewi MN. 2025. Evolution of sex chromosomes, sex determination and asexuality
    in Artemia brine shrimp. Institute of Science and Technology Austria.
  mla: Elkrewi, Marwan N. <i>Evolution of Sex Chromosomes, Sex Determination and Asexuality
    in Artemia Brine Shrimp</i>. Institute of Science and Technology Austria, 2025,
    doi:<a href="https://doi.org/10.15479/AT-ISTA-19386">10.15479/AT-ISTA-19386</a>.
  short: M.N. Elkrewi, Evolution of Sex Chromosomes, Sex Determination and Asexuality
    in Artemia Brine Shrimp, Institute of Science and Technology Austria, 2025.
corr_author: '1'
date_created: 2025-03-11T12:54:31Z
date_published: 2025-03-14T00:00:00Z
date_updated: 2026-07-06T13:48:33Z
day: '14'
ddc:
- '570'
- '576'
degree_awarded: PhD
department:
- _id: GradSch
- _id: BeVi
doi: 10.15479/AT-ISTA-19386
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has_accepted_license: '1'
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '03'
oa: 1
oa_version: Published Version
page: '170'
project:
- _id: 34ae1506-11ca-11ed-8bc3-c14f4c474396
  grant_number: F8810
  name: The highjacking of meiosis for asexual reproduction
publication_identifier:
  eissn:
  - 2663-337X
  isbn:
  - '9783990780534'
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '12248'
    relation: part_of_dissertation
    status: public
  - id: '10767'
    relation: part_of_dissertation
    status: public
  - id: '15009'
    relation: part_of_dissertation
    status: public
  - id: '14613'
    relation: part_of_dissertation
    status: public
  - id: '17890'
    relation: part_of_dissertation
    status: public
  - id: '10167'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Beatriz
  full_name: Vicoso, Beatriz
  id: 49E1C5C6-F248-11E8-B48F-1D18A9856A87
  last_name: Vicoso
  orcid: 0000-0002-4579-8306
title: Evolution of sex chromosomes, sex determination and asexuality in Artemia brine
  shrimp
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2025'
...
---
OA_embargo: '6'
OA_place: publisher
_id: '20798'
abstract:
- lang: eng
  text: "Atom interferometers measure the relative phase shifts between coherent matter-wave
    paths\r\nthat arise from interactions with external fields or inertial forces.
    Due to their exceptional\r\nphase sensitivity, atom interferometers became an
    essential tool for precision measurements\r\nand fundamental physics experiments,
    finding applications in geodesy, gravimetry, and inertial\r\nnavigation. However,
    their measurement precision is limited by quantum projection noise,\r\nwhich arises
    from the Heisenberg uncertainty principle, preventing the measurement of atomic\r\nstates
    with absolute precision. The generation of entanglement between the atoms offers
    a\r\npath to surpass this so-called standard quantum limit, thereby enhancing
    the interferometer’s\r\nphase sensitivity beyond classical measurement bounds.\r\nThis
    thesis reports on the development of an atom interferometer experiment designed
    to\r\nrealize cavity-mediated, squeezed Mach-Zehnder-type interferometry with
    ultra-cold 87Rb atoms.\r\nThe experiment combines cavity-aided spin-squeezing
    with cavity-mediated Mach-Zehnder\r\ninterferometry to demonstrate entanglement-enhanced
    phase sensitivity. The experiment is\r\ncentered on a triangular optical cavity
    that mediates all relevant atom-light interactions. The\r\ncavity provides optical
    trapping, spin-squeezing, and Raman beam-splitter operations, enabling\r\nto perform
    interferometry on a continuously trapped atomic ensemble.\r\nThe thesis elaborates
    on the fundamental theoretical framework, the cavity design, and the full\r\noptical
    setup, including the detailed configuration of the developed laser stabilization
    methods.\r\nExperimentally, continuous loading methods were explored, resulting
    in an accumulation of\r\nup to 4 × 106\r\natoms in the dipole trap within a cycle
    time of 500 ms. The AC Stark shift\r\ncompensation method developed for continuous
    loading was further applied for in-trap cooling\r\nto 10 µK, and optical pumping
    for efficient atomic state preparation. Coherent state control\r\nwas verified
    via observation of microwave-driven Rabi oscillations, and used to characterize\r\natom-cavity
    coupling.\r\nThese presented results establish the experimental groundwork for
    the future development of\r\ncavity-mediated, entanglement-enhanced Mach-Zehnder-type
    atom interferometry."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Sebastian
  full_name: Wald, Sebastian
  id: 133F200A-B015-11E9-AD41-0EDAE5697425
  last_name: Wald
  orcid: 0000-0002-5869-1604
citation:
  ama: Wald S. Atoms in a propagating-wave cavity for squeezed Mach-Zehnder atom interferometry.
    2025. doi:<a href="https://doi.org/10.15479/AT-ISTA-20798">10.15479/AT-ISTA-20798</a>
  apa: Wald, S. (2025). <i>Atoms in a propagating-wave cavity for squeezed Mach-Zehnder
    atom interferometry</i>. Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/AT-ISTA-20798">https://doi.org/10.15479/AT-ISTA-20798</a>
  chicago: Wald, Sebastian. “Atoms in a Propagating-Wave Cavity for Squeezed Mach-Zehnder
    Atom Interferometry.” Institute of Science and Technology Austria, 2025. <a href="https://doi.org/10.15479/AT-ISTA-20798">https://doi.org/10.15479/AT-ISTA-20798</a>.
  ieee: S. Wald, “Atoms in a propagating-wave cavity for squeezed Mach-Zehnder atom
    interferometry,” Institute of Science and Technology Austria, 2025.
  ista: Wald S. 2025. Atoms in a propagating-wave cavity for squeezed Mach-Zehnder
    atom interferometry. Institute of Science and Technology Austria.
  mla: Wald, Sebastian. <i>Atoms in a Propagating-Wave Cavity for Squeezed Mach-Zehnder
    Atom Interferometry</i>. Institute of Science and Technology Austria, 2025, doi:<a
    href="https://doi.org/10.15479/AT-ISTA-20798">10.15479/AT-ISTA-20798</a>.
  short: S. Wald, Atoms in a Propagating-Wave Cavity for Squeezed Mach-Zehnder Atom
    Interferometry, Institute of Science and Technology Austria, 2025.
corr_author: '1'
das_tickbox: '1'
date_created: 2025-12-11T11:48:11Z
date_published: 2025-12-11T00:00:00Z
date_updated: 2026-07-24T08:07:28Z
day: '11'
ddc:
- '530'
degree_awarded: PhD
department:
- _id: GradSch
- _id: OnHo
doi: 10.15479/AT-ISTA-20798
doi_confirm: '1'
file:
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  date_created: 2025-12-12T11:53:42Z
  date_updated: 2026-06-15T22:30:03Z
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  file_name: 2025_Wald_Sebastian_Thesis.pdf
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  date_updated: 2026-06-15T22:30:03Z
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  relation: source_file
file_date_updated: 2026-06-15T22:30:03Z
has_accepted_license: '1'
keyword:
- entanglement-enhanced atom interferometry
- cavity QED
- spin-squeezing
- dipole trap
- quantum optics
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc/4.0/
month: '12'
oa: 1
oa_version: Published Version
page: '152'
publication_identifier:
  isbn:
  - 978-3-99078-075-6
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '14759'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Onur
  full_name: Hosten, Onur
  id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
  last_name: Hosten
  orcid: 0000-0002-2031-204X
title: Atoms in a propagating-wave cavity for squeezed Mach-Zehnder atom interferometry
tmp:
  image: /images/cc_by_nc.png
  legal_code_url: https://creativecommons.org/licenses/by-nc/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
  short: CC BY-NC (4.0)
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2025'
...
---
OA_embargo: 6 months
OA_place: publisher
OA_type: hybrid
_id: '19498'
abstract:
- lang: eng
  text: A dynamic interplay between fast synaptic signals and slower neuromodulatory
    signals controls the excitatory/inhibitory (E/I) balance within neuronal circuits.
    The mechanisms by which neuropeptide signaling is regulated to maintain E/I balance
    remain uncertain. We designed a genetic screen to isolate genes involved in the
    peptidergic maintenance of the E/I balance in the C. elegans motor circuit. This
    screen identified the C. elegans orthologs of the presynaptic phosphoprotein synapsin
    (snn-1) and the protein phosphatase 1 (PP1) regulatory subunit PHACTR1 (phac-1).
    We demonstrate that both phac-1 and snn-1 alter the motor behavior of C. elegans,
    and genetic interactions suggest that SNN-1 contributes to PP1-PHAC-1 holoenzyme
    signaling. De novo variants of human PHACTR1, associated with early-onset epilepsies
    [developmental and epileptic encephalopathy 70 (DEE70)], when expressed in C.
    elegans resulted in constitutive PP1-PHAC-1 holoenzyme activity. Unregulated PP1-PHAC-1
    signaling alters the synapsin and actin cytoskeleton and increases neuropeptide
    release by cholinergic motor neurons, which secondarily affects the presynaptic
    vesicle cycle. Together, these results clarify the dominant mechanisms of action
    of the DEE70 alleles and suggest that altered neuropeptide release may alter E/I
    balance in DEE70.
acknowledgement: P.L. is a research associate of the Belgian National Fund for Scientific
  Research (FRS-FNRS). K.S., M.S.-G., S.S., and P.L. are supported by grants from
  the FRS-FNRS. This work was supported by an Advanced ERC Grant (269058 ACMO) to
  M.D.B. We thank the team of Alexander Gottschalk for the snn-1(S9A) strain. We thank
  the Imaging Facility of the Faculty of Medicine (LiMiF) of the Universite Libre
  de Bruxelles, supported by FRS-FNRS. This work made use of instruments in the Electron
  Microscopy Core of the University of Illinois Chicago Research Resources Center
  as well as the BioCryo facility of Northwestern University's NUANCE Center, which
  has received support from the SHyNE Resource (NSF ECCS-2025633), the IIN, and Northwestern's
  MRSEC program (NSF DMR-2308691). Some strains were provided by the CGC, which is
  funded by NIH Office of Research Infrastructure Programs (P40 OD010440).
article_number: e1767232024
article_processing_charge: No
article_type: original
author:
- first_name: Aikaterini
  full_name: Stratigi, Aikaterini
  last_name: Stratigi
- first_name: Miguel
  full_name: Soler-García, Miguel
  last_name: Soler-García
- first_name: Mia
  full_name: Krout, Mia
  last_name: Krout
- first_name: Shikha
  full_name: Shukla, Shikha
  last_name: Shukla
- first_name: Mario
  full_name: De Bono, Mario
  id: 4E3FF80E-F248-11E8-B48F-1D18A9856A87
  last_name: De Bono
  orcid: 0000-0001-8347-0443
- first_name: Janet E.
  full_name: Richmond, Janet E.
  last_name: Richmond
- first_name: Patrick
  full_name: Laurent, Patrick
  last_name: Laurent
citation:
  ama: Stratigi A, Soler-García M, Krout M, et al. Neuroendocrine control of synaptic
    transmission by PHAC-1 in C. elegans. <i>Journal of Neuroscience</i>. 2025;45(13).
    doi:<a href="https://doi.org/10.1523/JNEUROSCI.1767-23.2024">10.1523/JNEUROSCI.1767-23.2024</a>
  apa: Stratigi, A., Soler-García, M., Krout, M., Shukla, S., de Bono, M., Richmond,
    J. E., &#38; Laurent, P. (2025). Neuroendocrine control of synaptic transmission
    by PHAC-1 in C. elegans. <i>Journal of Neuroscience</i>. Society for Neuroscience.
    <a href="https://doi.org/10.1523/JNEUROSCI.1767-23.2024">https://doi.org/10.1523/JNEUROSCI.1767-23.2024</a>
  chicago: Stratigi, Aikaterini, Miguel Soler-García, Mia Krout, Shikha Shukla, Mario
    de Bono, Janet E. Richmond, and Patrick Laurent. “Neuroendocrine Control of Synaptic
    Transmission by PHAC-1 in C. Elegans.” <i>Journal of Neuroscience</i>. Society
    for Neuroscience, 2025. <a href="https://doi.org/10.1523/JNEUROSCI.1767-23.2024">https://doi.org/10.1523/JNEUROSCI.1767-23.2024</a>.
  ieee: A. Stratigi <i>et al.</i>, “Neuroendocrine control of synaptic transmission
    by PHAC-1 in C. elegans,” <i>Journal of Neuroscience</i>, vol. 45, no. 13. Society
    for Neuroscience, 2025.
  ista: Stratigi A, Soler-García M, Krout M, Shukla S, de Bono M, Richmond JE, Laurent
    P. 2025. Neuroendocrine control of synaptic transmission by PHAC-1 in C. elegans.
    Journal of Neuroscience. 45(13), e1767232024.
  mla: Stratigi, Aikaterini, et al. “Neuroendocrine Control of Synaptic Transmission
    by PHAC-1 in C. Elegans.” <i>Journal of Neuroscience</i>, vol. 45, no. 13, e1767232024,
    Society for Neuroscience, 2025, doi:<a href="https://doi.org/10.1523/JNEUROSCI.1767-23.2024">10.1523/JNEUROSCI.1767-23.2024</a>.
  short: A. Stratigi, M. Soler-García, M. Krout, S. Shukla, M. de Bono, J.E. Richmond,
    P. Laurent, Journal of Neuroscience 45 (2025).
date_created: 2025-04-06T22:01:32Z
date_published: 2025-03-26T00:00:00Z
date_updated: 2026-07-28T11:30:41Z
day: '26'
ddc:
- '570'
department:
- _id: MaDe
doi: 10.1523/JNEUROSCI.1767-23.2024
external_id:
  isi:
  - '001460952700001'
  pmid:
  - '39919830'
file:
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  checksum: 7befc0168f4cd5bd2b0fcff9e2a94784
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  creator: dernst
  date_created: 2025-04-07T11:57:19Z
  date_updated: 2025-09-27T22:30:02Z
  embargo: 2025-09-27
  file_id: '19525'
  file_name: 2025_JourNeuroscience_Stratigi.pdf
  file_size: 3111735
  relation: main_file
file_date_updated: 2025-09-27T22:30:02Z
has_accepted_license: '1'
intvolume: '        45'
isi: 1
issue: '13'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
pmid: 1
publication: Journal of Neuroscience
publication_identifier:
  eissn:
  - 1529-2401
  issn:
  - 0270-6474
publication_status: published
publisher: Society for Neuroscience
quality_controlled: '1'
scopus_import: '1'
status: public
title: Neuroendocrine control of synaptic transmission by PHAC-1 in C. elegans
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 45
year: '2025'
...
---
OA_place: publisher
_id: '18871'
abstract:
- lang: eng
  text: "\"Can we do this with a new type of computer - a quantum computer?\". This
    famous\r\nquotation of the brilliant Richard Feynman within a conference talk
    on \"Simulating physics\r\nwith computers.” is often reverently praised as the
    origin of the field of quantum computing.\r\nThe idea was to use quantum mechanical
    systems itself to simulate \"Nature\", which is\r\ninherently quantum mechanical.
    Now, 43 years later, the theoretical framework of how such\r\na computer can operate
    has been developed. Two main important concepts for a potential\r\nquantum supremacy,
    superposition and entanglement, have been exploited to design quantum\r\nalgorithms
    to significantly speed up certain tasks. Yet, the specific hardware implementation\r\nis
    still far from being certain, in fact the race between the most promising platforms
    such as\r\nsuperconducting qubits, bosonic codes, cold atoms, trapped ions, optical
    computing as well\r\nas spin qubits has recently intensified. If one also includes
    the most mature applications of\r\nquantum communication technologies, secure
    quantum key distribution and quantum random\r\nnumber generators, as part of a
    quantum information technology ecosystem, we are confronted\r\nwith a plethora
    of different materials, concepts, and also operation frequencies. While\r\nsuperconducting
    qubits, bosonic codes and spin qubits work in the regime of approximately 5\r\nGHz
    and are controlled by electrical fields, trapped ions, cold atoms, and optical
    quantum\r\ncomputing operate with light in the infrared or visible range.\r\nConsequently,
    a quantum frequency converter or microwave-optic transducer is required\r\nto
    interface the different frequency domains or establish a long-range network connection\r\nwith
    suitable telecom fibers. In fact, the combination of different frequency regimes
    is also\r\nan essential part in our classical modern communication network, where
    computations are\r\nperformed in electrical circuits and the information exchange
    over longer distances happens\r\nvia optical fibers. However, the specific challenges
    specific to building a quantum computer,\r\nalso apply to the development of such
    a quantum frequency transducer: 1) As we deal with\r\nsingle excitations as the
    carrier of information, i.e. the smallest possible quantity, the signal\r\ncan
    easily be corrupted by other noise sources which needs to be avoided by all means.
    This\r\nis also the reason why microwave quantum computers operate at temperature
    environments\r\nclose to zero temperature (< 0.1 Kelvin) to avoid corruption by
    thermal noise. 2) The\r\nfrequency interface generally needs to preserve the phase
    of the signal as an essential part\r\nof the quantum state. And 3) Quantum signals
    cannot be copied which would be a typical\r\nstrategy to account for errors in
    classical computers. And finally, there is a challenge specific to\r\nmicrowave-optic
    transducers: While quantum computers are operating in one specific frequency\r\ndomain,
    microwave-optic transducers combine microwave and optical fields in one device.\r\nThis
    results in the particular challenge that high-energy optical radiation, which
    is usually\r\nwell-shielded from superconducting microwave quantum processors,
    are now an essential part\r\nof the device. The concomitant optical radiation
    in the operating transducer will inevitably\r\nhave a detrimental effect on the
    superconducting microwave components. Together with the\r\nrequirement of minimal
    background noise for quantum-limited operation as described above,\r\nv\r\nheating
    from the absorption of optical photons within the same device where single microwave\r\nexcitations
    are processed forms a formidable challenge.\r\nThis thesis aims to address this
    challenge by developing microwave-optic transducers where\r\nthe impact of optical
    absorption on superconducting circuits in general and superconducting\r\nqubits
    specifically can be mitigated. In our first approach, we developed a compact device\r\nwith
    optimized interaction strengths between the different frequency domains. This
    minimizes\r\nthe optical powers used for transducer operation and thus the optical
    absorption heating. This\r\nwork was - to the best of our knowledge - the first
    comprehensive noise study, in an integrated\r\nmicrowave-optic transducer. Unfortunately,
    we saw that the optical absorption heating added\r\nnoise way above a single excitation.
    Consequently, a potential quantum signal would have\r\nbeen buried in the noise,
    added by the transduction.\r\nBuilding on this insight, we utilized a three-dimensional
    microwave-optic transducer instead\r\nof an integrated device. The larger heat
    capacity of the macroscopic device with a size\r\nof a few millimeters can absorb
    a larger fraction of the optical heating before it increases\r\nthe temperature
    of the device. This allowed us to interface the transducer directly with a\r\nsuperconducting
    qubit to readout the qubit state in a novel all-optical manner. We showed\r\nthat
    the microwave-optic transducer can be operated in a regime in which optical fields
    don’t\r\nharm the sensitive qubit. This is an important prerequisite for the operation
    of microwave-optic\r\ntransducers in conjunction with microwave quantum processors
    and brings the integration and\r\nseamless orchestration of different frequency
    components in a quantum network a step closer.\r\n"
acknowledged_ssus:
- _id: SSU
- _id: M-Shop
- _id: NanoFab
acknowledgement: "This work was supported by the European Research Council under grant
  agreement no. 758053\r\n(ERC StG QUNNECT) and the European Union’s Horizon 2020
  research, innovation program\r\nunder grant agreement no. 899354 (FETopen SuperQuLAN)
  and the Austrian Science Fund\r\n(FWF) through BeyondC (F7105). I want to acknowledge
  generous support from the Austrian\r\nAcademy of Sciences from a DOC [Doctoral program
  of the Austrian Academy of Sciences]\r\nfellowship (no. 25129).\r\n"
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Georg M
  full_name: Arnold, Georg M
  id: 3770C838-F248-11E8-B48F-1D18A9856A87
  last_name: Arnold
  orcid: 0000-0003-1397-7876
citation:
  ama: Arnold GM. Microwave-optic interconnects for superconducting circuits. 2025.
    doi:<a href="https://doi.org/10.15479/at:ista:18871">10.15479/at:ista:18871</a>
  apa: Arnold, G. M. (2025). <i>Microwave-optic interconnects for superconducting
    circuits</i>. Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/at:ista:18871">https://doi.org/10.15479/at:ista:18871</a>
  chicago: Arnold, Georg M. “Microwave-Optic Interconnects for Superconducting Circuits.”
    Institute of Science and Technology Austria, 2025. <a href="https://doi.org/10.15479/at:ista:18871">https://doi.org/10.15479/at:ista:18871</a>.
  ieee: G. M. Arnold, “Microwave-optic interconnects for superconducting circuits,”
    Institute of Science and Technology Austria, 2025.
  ista: Arnold GM. 2025. Microwave-optic interconnects for superconducting circuits.
    Institute of Science and Technology Austria.
  mla: Arnold, Georg M. <i>Microwave-Optic Interconnects for Superconducting Circuits</i>.
    Institute of Science and Technology Austria, 2025, doi:<a href="https://doi.org/10.15479/at:ista:18871">10.15479/at:ista:18871</a>.
  short: G.M. Arnold, Microwave-Optic Interconnects for Superconducting Circuits,
    Institute of Science and Technology Austria, 2025.
corr_author: '1'
date_created: 2025-01-24T10:28:39Z
date_published: 2025-01-24T00:00:00Z
date_updated: 2026-04-16T12:20:43Z
day: '24'
ddc:
- '530'
degree_awarded: PhD
department:
- _id: JoFi
- _id: GradSch
doi: 10.15479/at:ista:18871
ec_funded: 1
file:
- access_level: closed
  checksum: 71872702e8f46c275eaea44efc4d304f
  content_type: application/x-zip-compressed
  creator: cchlebak
  date_created: 2025-01-29T08:38:08Z
  date_updated: 2026-01-29T23:30:03Z
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  file_name: tex for upload.zip
  file_size: 18856130
  relation: source_file
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  content_type: application/pdf
  creator: cchlebak
  date_created: 2025-01-29T08:38:34Z
  date_updated: 2026-01-29T23:30:03Z
  embargo: 2026-01-29
  file_id: '18947'
  file_name: ISTThesisGA2022_final.pdf
  file_size: 17344760
  relation: main_file
file_date_updated: 2026-01-29T23:30:03Z
has_accepted_license: '1'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-sa/4.0/
month: '01'
oa: 1
oa_version: Published Version
page: '135'
project:
- _id: 26336814-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '758053'
  name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 9B868D20-BA93-11EA-9121-9846C619BF3A
  call_identifier: H2020
  grant_number: '899354'
  name: Quantum Local Area Networks with Superconducting Qubits
- _id: 2671EB66-B435-11E9-9278-68D0E5697425
  name: Coherent on-chip conversion of superconducting qubit signals from microwaves
    to optical frequencies
- _id: bdb108fd-d553-11ed-ba76-83dc74a9864f
  grant_number: F07105
  name: QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration
    of Superconducting Quantum Circuits
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '6609'
    relation: part_of_dissertation
    status: public
  - id: '8529'
    relation: part_of_dissertation
    status: public
  - id: '18953'
    relation: part_of_dissertation
    status: public
  - id: '10924'
    relation: part_of_dissertation
    status: public
  - id: '9114'
    relation: part_of_dissertation
    status: public
  - id: '13200'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Johannes M
  full_name: Fink, Johannes M
  id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
  last_name: Fink
  orcid: 0000-0001-8112-028X
title: Microwave-optic interconnects for superconducting circuits
tmp:
  image: /images/cc_by_nc_sa.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC
    BY-NC-SA 4.0)
  short: CC BY-NC-SA (4.0)
type: dissertation
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2025'
...
---
OA_embargo: '6'
OA_place: publisher
_id: '19745'
abstract:
- lang: eng
  text: "Cell migration is a crucial process in animal development and maintenance.
    It is incredibly\r\nheterogeneous, with different cell types utilizing fundamentally
    distinct migration strategies.\r\nThe strategies also depend on the cellular microenvironment,
    where cells can switch between\r\nmigration modes as they encounter new environmental
    cues. In this thesis, we investigated\r\nhow dendritic cells adapt their migration
    strategy when encountering geometrically,\r\nmechanically and chemically distinct
    environments.\r\nWhen dendritic cells are embedded in a homogeneous fibrous network,
    they migrate in a fast\r\nand directional amoeboid manner. In this migration strategy,
    extracellular proteolysis and\r\nintegrin-mediated adhesions are dispensable.
    Instead, the cells use topography of the\r\nenvironment to propel their cell body
    forward. To migrate efficiently in the maze of different\r\npore sizes, they position
    the nucleus ahead of the microtubule organizing center (MTOC) and\r\nuse it to
    gauge the pores to identify the path of least resistance. Our aim was to identify\r\nwhether
    dendritic cells adapt their migration strategy when encountering asymmetrical\r\ntransitions
    into much denser environments with limited choice of large pores. In such invasive\r\ntransitions
    it is unclear if the cells can cross tight pores without the use of adhesions
    and\r\nextracellular proteolysis and whether they maintain the nucleus in the
    cell front.\r\nUsing various cell migration assays such as fibrous 3D collagen
    gels, geometrically defined\r\nmicrochannels with constrictions and simplistic
    under agarose migration assay, we provide\r\na comprehensive characterization
    of invasive migration of dendritic cells. We show that\r\nduring invasion the
    cells stall and stretch, reflecting the difficulty to translocate the bulky cell\r\nbody
    into the dense environment. In collagen gels, we show that dendritic cells can
    invade\r\nwithout proteolysis and adhesions. Instead, they utilize contractility,
    which can lead to largescale collagen compressions. During invasion, the nucleus
    stalls at tight constrictions, leading\r\nto a transient organelle reorientation.
    To resolve the stalling, upregulated rear contractility is\r\nrequired. This contractile
    force is simultaneously necessary for reverting the nucleus back to\r\nthe cell
    front after invasion and maintaining this positioning during permissive migration.\r\nA
    functional role of the reorientation was uncovered in the first collaboration
    project.\r\nA prominent central actin pool was identified around the MTOC, especially
    pronounced in\r\ndense and compressive environments. The actin pool was shown
    to generate pushing forces\r\nto dilate the space for cell translocation. These
    forces are only necessary in non-permissive\r\nenvironments, where the nucleus
    reorients to the cell rear, allowing the actin pool to\r\ngenerate space. In permissive
    environments where space generation is dispensable, the\r\nMTOC is located behind
    the nucleus and the actin cloud has reduced intensity, allowing more\r\nactin
    to be incorporated into the lamellipodium, speeding up migration.\r\nIn the second
    collaboration project, we investigated the effects of distinct chemical\r\nenvironments
    on dendritic cell migration. The strikingly persistent migration of these cells\r\nwas
    explained by their ability to modulate and even self-generate chemokine gradients.
    This\r\nallows the cells to migrate faster and more persistent in uniform chemokine
    fields compared\r\nto imposed chemokine gradients. The chemokine receptor CCR7
    was identified as a crucial\r\nplayer in this process, both sensing the signal
    and internalizing the chemokine to create a sink."
acknowledgement: "This project has received funding from the Austrian Science Fund
  (FWF) via the doctorate\r\ncollege DK NanoCell and from the European Union’s Horizon
  2020 research and innovation\r\nprogramme under the Marie Skłodowska-Curie Grant
  Agreement No. 665385.\r\n"
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Nikola
  full_name: Canigova, Nikola
  id: 3795523E-F248-11E8-B48F-1D18A9856A87
  last_name: Canigova
  orcid: 0000-0002-8518-5926
citation:
  ama: Canigova N. Adaptive strategies of dendritic cell migration in response to
    environmental cues. 2025. doi:<a href="https://doi.org/10.15479/AT-ISTA-19745">10.15479/AT-ISTA-19745</a>
  apa: Canigova, N. (2025). <i>Adaptive strategies of dendritic cell migration in
    response to environmental cues</i>. Institute of Science and Technology Austria.
    <a href="https://doi.org/10.15479/AT-ISTA-19745">https://doi.org/10.15479/AT-ISTA-19745</a>
  chicago: Canigova, Nikola. “Adaptive Strategies of Dendritic Cell Migration in Response
    to Environmental Cues.” Institute of Science and Technology Austria, 2025. <a
    href="https://doi.org/10.15479/AT-ISTA-19745">https://doi.org/10.15479/AT-ISTA-19745</a>.
  ieee: N. Canigova, “Adaptive strategies of dendritic cell migration in response
    to environmental cues,” Institute of Science and Technology Austria, 2025.
  ista: Canigova N. 2025. Adaptive strategies of dendritic cell migration in response
    to environmental cues. Institute of Science and Technology Austria.
  mla: Canigova, Nikola. <i>Adaptive Strategies of Dendritic Cell Migration in Response
    to Environmental Cues</i>. Institute of Science and Technology Austria, 2025,
    doi:<a href="https://doi.org/10.15479/AT-ISTA-19745">10.15479/AT-ISTA-19745</a>.
  short: N. Canigova, Adaptive Strategies of Dendritic Cell Migration in Response
    to Environmental Cues, Institute of Science and Technology Austria, 2025.
corr_author: '1'
date_created: 2025-05-26T08:49:00Z
date_published: 2025-05-27T00:00:00Z
date_updated: 2026-06-18T17:34:48Z
day: '27'
ddc:
- '570'
degree_awarded: PhD
department:
- _id: MiSi
- _id: GradSch
doi: 10.15479/AT-ISTA-19745
ec_funded: 1
file:
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  checksum: 1a2d1525d19347fbb879ef57c02951bf
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  date_created: 2025-05-28T07:38:17Z
  date_updated: 2025-11-27T23:30:02Z
  embargo_to: open_access
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  creator: cchlebak
  date_created: 2025-05-28T07:39:53Z
  date_updated: 2025-11-27T23:30:02Z
  embargo: 2025-11-27
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  file_size: 194530600
  relation: main_file
file_date_updated: 2025-11-27T23:30:02Z
has_accepted_license: '1'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: '133'
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
- _id: 265E2996-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: W01250-B20
  name: Nano-Analytics of Cellular Systems
publication_identifier:
  isbn:
  - 978-3-99078-058-9
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '14274'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Michael K
  full_name: Sixt, Michael K
  id: 41E9FBEA-F248-11E8-B48F-1D18A9856A87
  last_name: Sixt
  orcid: 0000-0002-6620-9179
title: Adaptive strategies of dendritic cell migration in response to environmental
  cues
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2025'
...
---
OA_place: publisher
_id: '19271'
abstract:
- lang: eng
  text: "The medial habenula (MHb) is implicated in regulating emotional responses\r\nto
    aversive events. Studies in zebrafish have identified a remarkable morphological\r\nleft-right
    asymmetry in the dorsal habenula (zebrafish equivalent of mammalian\r\nMHb)-to-interpeduncular
    nucleus (IPN) pathway and its left-side specific role in\r\nmodulating fear responses.
    However, there is little evidence for structural or\r\nfunctional lateralization
    in the mammalian MHb-IPN pathway.\r\nHere, I investigated the synaptic properties
    of the left and right MHb\r\nafferents to the IPN in mice and addressed whether
    these synaptic connections\r\nselectively influence the expression of conditioned
    fear in mice. My findings reveal\r\nthat each individual IPN neuron receives inputs
    from both left and right MHb.\r\nElectrophysiological recordings from the same
    postsynaptic IPN neurons\r\ndemonstrate that the left MHb-originating synapses
    exhibit lower release\r\nprobability and higher \U0001D6FE-aminobutyric acid type
    B receptor (GABABR)-mediated\r\npotentiation compared to the right MHb-originating
    synapses. Interestingly,\r\nchemogenetic inhibition of cholinergic neurons in
    the left but not the right MHb\r\nsignificantly attenuated cue-dependent fear
    recall. Furthermore, conditional\r\ndeletion of GABABR in the left MHb interfered
    with the recall of cued fear memory,\r\nwhereas that in the right MHb neurons
    spared fear memory expression.\r\nCollectively, I demonstrate a functional asymmetry
    of the MHb in mice,\r\nrevealing a predominant role for GABABR-mediated signaling
    in the left MHb-IPN\r\npathway in the modulation of fear memories. These findings
    suggest that\r\nlateralized pathways could represent a fundamental principle in
    the neural\r\nregulation of emotion across species."
acknowledged_ssus:
- _id: PreCl
- _id: M-Shop
acknowledgement: "I would like to thank the European Research Council and European
  Commission, under the European Union’s Horizon 2020 research and innovation program
  (ERC grant agreement no. 694539 to Ryuichi Shigemoto and the Marie Skłodowska-Curie
  grant agreement no. 665385 to Cihan Önal), and the Austrian Neuroscience Association
  for providing financial support and opportunities, which were important in allowing
  me to present my work. I also wish to thank the\r\nPreclinical Facility, especially
  Michael Schunn, for always welcoming me from my earliest days as an intern. My gratitude
  goes as well to the Miba Machine Shop, in particular Todor Asenov, Astrit Arslani,
  and Thomas Menner, whose technical expertise often saved the day."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Hüseyin C
  full_name: Önal, Hüseyin C
  id: 4659D740-F248-11E8-B48F-1D18A9856A87
  last_name: Önal
  orcid: 0000-0002-2771-2011
citation:
  ama: Önal C. Asymmetrical modulation of fear expression via GABAB receptors in the
    mouse medial habenula. 2025. doi:<a href="https://doi.org/10.15479/AT-ISTA-19271">10.15479/AT-ISTA-19271</a>
  apa: Önal, C. (2025). <i>Asymmetrical modulation of fear expression via GABAB receptors
    in the mouse medial habenula</i>. Institute of Science and Technology Austria.
    <a href="https://doi.org/10.15479/AT-ISTA-19271">https://doi.org/10.15479/AT-ISTA-19271</a>
  chicago: Önal, Cihan. “Asymmetrical Modulation of Fear Expression via GABAB Receptors
    in the Mouse Medial Habenula.” Institute of Science and Technology Austria, 2025.
    <a href="https://doi.org/10.15479/AT-ISTA-19271">https://doi.org/10.15479/AT-ISTA-19271</a>.
  ieee: C. Önal, “Asymmetrical modulation of fear expression via GABAB receptors in
    the mouse medial habenula,” Institute of Science and Technology Austria, 2025.
  ista: Önal C. 2025. Asymmetrical modulation of fear expression via GABAB receptors
    in the mouse medial habenula. Institute of Science and Technology Austria.
  mla: Önal, Cihan. <i>Asymmetrical Modulation of Fear Expression via GABAB Receptors
    in the Mouse Medial Habenula</i>. Institute of Science and Technology Austria,
    2025, doi:<a href="https://doi.org/10.15479/AT-ISTA-19271">10.15479/AT-ISTA-19271</a>.
  short: C. Önal, Asymmetrical Modulation of Fear Expression via GABAB Receptors in
    the Mouse Medial Habenula, Institute of Science and Technology Austria, 2025.
corr_author: '1'
date_created: 2025-02-28T14:15:53Z
date_published: 2025-03-04T00:00:00Z
date_updated: 2026-04-07T12:40:42Z
day: '04'
ddc:
- '570'
- '571'
- '573'
- '599'
degree_awarded: PhD
department:
- _id: GradSch
- _id: RySh
doi: 10.15479/AT-ISTA-19271
ec_funded: 1
file:
- access_level: closed
  checksum: c1a4d75a7471de9f954697b06cd18d28
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  creator: hoenal
  date_created: 2025-02-28T13:57:01Z
  date_updated: 2026-02-01T23:30:02Z
  embargo_to: open_access
  file_id: '19272'
  file_name: Cihan_Onal_Thesis_Final.docx
  file_size: 25869143
  relation: source_file
- access_level: open_access
  checksum: de4e62147ab9f04098dc8cd898c630da
  content_type: application/pdf
  creator: hoenal
  date_created: 2025-02-28T13:57:04Z
  date_updated: 2026-02-01T23:30:02Z
  embargo: 2026-02-01
  file_id: '19273'
  file_name: Cihan_Onal_Thesis_Final_pdfa.pdf
  file_size: 12077596
  relation: main_file
file_date_updated: 2026-02-01T23:30:02Z
has_accepted_license: '1'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: 25CA28EA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '694539'
  name: 'In situ analysis of single channel subunit composition in neurons: physiological
    implication in synaptic plasticity and behaviour'
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication_identifier:
  eissn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '9437'
    relation: part_of_dissertation
    status: public
  - id: '15084'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Ryuichi
  full_name: Shigemoto, Ryuichi
  id: 499F3ABC-F248-11E8-B48F-1D18A9856A87
  last_name: Shigemoto
  orcid: 0000-0001-8761-9444
title: Asymmetrical modulation of fear expression via GABAB receptors in the mouse
  medial habenula
tmp:
  image: /images/cc_by_nc.png
  legal_code_url: https://creativecommons.org/licenses/by-nc/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
  short: CC BY-NC (4.0)
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2025'
...
---
OA_place: publisher
_id: '19431'
abstract:
- lang: eng
  text: "Gene expression is crucial for cell differentiation, development and survival
    of\r\norganisms. It consists of several steps, starting with transcription that
    is mediated by\r\nRNA polymerases. These are protein machineries transcribing
    and producing different\r\ntypes of RNAs. Although, the individual steps of transcription
    by RNA polymerase II\r\n(Pol II) as well as the structure of Pol II has been extensively
    studied, surprisingly,\r\nthere is still little known about its regulation and
    assembly in cytoplasm. Among the\r\nproteins that are important in biogenesis
    of Pol II are RNA polymerase II associating\r\nproteins (RPAP) and small GPN-loop
    GTPases (GPN). Both of these protein groups\r\nwere shown to take essential part
    in assembly of Pol II.\r\nThe aim of this project was to deepen our knowledge
    in regulation of Pol II in\r\nthe cytoplasm as well as the proteins involved in
    this process. Techniques of structural\r\nbiology, biochemistry and cell biology
    were employed to study and characterize cytoplasmic Pol II and its interacting
    partners.\r\nThis study shows for the first time the structure of cytoplasmic
    Pol II at high\r\nresolution. The structure also reveals proteins interacting
    with Pol II in cytoplasm,\r\nnamely GDOWN1, RPAP2. Comparing the structure of
    cytoplasmic Pol II with transcribing Pol II revealed striking difference in clamp
    region that is not in closed state.\r\nFurthermore, GDOWN1 and RPAP2 make steric
    clashes with various transcription\r\nfactors bound to Pol II during different
    stages of transcription. Even though GPN1 and\r\nGPN3 proteins were not resolved
    in the cytoplasmic Pol II structure, they are part of\r\nthe complex and their
    interaction with Pol II was confirmed in vitro. RPAP2 stabilizes\r\nthese proteins
    on Pol II and several experiments suggest that they interact with the\r\nclamp
    region. In addition, GDOWN1, RPAP2 and GPNs might keep clamp in open or\r\npartially
    open state. Based on these results I propose a novel model of regulation of\r\nPol
    II in cytoplasm. GDOWN1, RPAP2, GPN1 and GPN3 bind to Pol II in cytoplasm\r\nand
    doing so they can prevent pre-mature binding of DNA or RNA and different transcription
    factors to Pol II in cytoplasm or before engaging in transcription nucleus.\r\nThis
    research contributes to the current knowledge of molecular mechanisms\r\nof Pol
    II regulation in cytoplasm."
acknowledged_ssus:
- _id: LifeSc
- _id: EM-Fac
- _id: ScienComp
acknowledgement: 'I would also like to acknowledge the ISTA Facilities: Lab Support
  Facility, Protein Services and Electron Microscopy Facility (EMF) and Scientific
  Computing. EMF for their support during data collections and troubleshooting, especially
  Valentin. Scientific Computing for solving quickly any issues related with cluster.'
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Annamaria
  full_name: Hlavata, Annamaria
  id: 36062FEC-F248-11E8-B48F-1D18A9856A87
  last_name: Hlavata
citation:
  ama: Hlavata A. Regulation of Cytoplasmic RNA Polymerase II. 2025. doi:<a href="https://doi.org/10.15479/10.15479/AT-ISTA-19431">10.15479/10.15479/AT-ISTA-19431</a>
  apa: Hlavata, A. (2025). <i>Regulation of Cytoplasmic RNA Polymerase II</i>. Institute
    of Science and Technology Austria. <a href="https://doi.org/10.15479/10.15479/AT-ISTA-19431">https://doi.org/10.15479/10.15479/AT-ISTA-19431</a>
  chicago: Hlavata, Annamaria. “Regulation of Cytoplasmic RNA Polymerase II.” Institute
    of Science and Technology Austria, 2025. <a href="https://doi.org/10.15479/10.15479/AT-ISTA-19431">https://doi.org/10.15479/10.15479/AT-ISTA-19431</a>.
  ieee: A. Hlavata, “Regulation of Cytoplasmic RNA Polymerase II,” Institute of Science
    and Technology Austria, 2025.
  ista: Hlavata A. 2025. Regulation of Cytoplasmic RNA Polymerase II. Institute of
    Science and Technology Austria.
  mla: Hlavata, Annamaria. <i>Regulation of Cytoplasmic RNA Polymerase II</i>. Institute
    of Science and Technology Austria, 2025, doi:<a href="https://doi.org/10.15479/10.15479/AT-ISTA-19431">10.15479/10.15479/AT-ISTA-19431</a>.
  short: A. Hlavata, Regulation of Cytoplasmic RNA Polymerase II, Institute of Science
    and Technology Austria, 2025.
corr_author: '1'
date_created: 2025-03-20T12:52:47Z
date_published: 2025-03-20T00:00:00Z
date_updated: 2026-04-07T11:46:32Z
day: '20'
ddc:
- '572'
degree_awarded: PhD
department:
- _id: GradSch
- _id: CaBe
doi: 10.15479/10.15479/AT-ISTA-19431
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  checksum: b7ddf424ffe95f8c767c53c8bb62d4f3
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  creator: ahlavata
  date_created: 2025-03-24T12:48:36Z
  date_updated: 2026-03-20T23:30:04Z
  embargo_to: open_access
  file_id: '19448'
  file_name: PhD_Thesis_Hlavata_final_submission.docx
  file_size: 23506747
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  creator: ahlavata
  date_created: 2025-03-24T12:51:10Z
  date_updated: 2026-03-20T23:30:04Z
  embargo: 2026-03-20
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  file_name: PhD_Thesis_Hlavata_final_submission_update.pdf
  file_size: 9478591
  relation: main_file
file_date_updated: 2026-03-20T23:30:04Z
has_accepted_license: '1'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
page: '83'
publication_identifier:
  eissn:
  - 2663-337X
  isbn:
  - 978-3-99078-055-8
publication_status: published
publisher: Institute of Science and Technology Austria
status: public
supervisor:
- first_name: Carrie A
  full_name: Bernecky, Carrie A
  id: 2CB9DFE2-F248-11E8-B48F-1D18A9856A87
  last_name: Bernecky
  orcid: 0000-0003-0893-7036
title: Regulation of Cytoplasmic RNA Polymerase II
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2025'
...
---
OA_type: closed access
_id: '19302'
abstract:
- lang: eng
  text: "Social interaction networks of insect colonies facilitate efficient information
    exchange and\r\ndemonstrate adaptive changes to mitigate disease transmission.
    While circadian rhythms\r\ninfluence individual behaviour, their role in shaping
    colony-level defences against pathogens\r\nremains unexplored. Here, we investigate
    whether social networks of the black garden ant,\r\nLasius niger, exhibit circadian
    rhythms and how these rhythms influence disease vulnerability\r\nwhen colonies
    are exposed to a pathogen during the day or the night.\r\nWe first establish baseline
    daily variations in activity and network dynamics in pathogen-free\r\ncolonies,
    revealing constitutive daily fluctuations in disease susceptibility. Subsequently,
    we\r\nexamine pathogen-induced changes in sanitary care and network dynamics by
    exposing\r\nforagers to a natural pathogen (Metarhizium brunneum) during either
    the day or the night.\r\nIndividual pathogen loads were measured after a nine-hour
    post-exposure period to evaluate\r\ntransmission outcomes.\r\nOur results demonstrate
    that diurnal ant colonies maintain robust circadian patterns in network\r\nproperties
    while flexibly adapting to pathogen exposure. Ants upregulate sanitary care\r\nirrespective
    of exposure timing, prioritising the protection of the valuable colony centre\r\nconsisting
    of nurses and the queen. These findings underscore the robustness and adaptability\r\nof
    ant colonies in balancing circadian rhythms with effective social immune responses."
acknowledged_ssus:
- _id: LifeSc
acknowledgement: Thank you to the Lab Support Facility at ISTA. Thank you to the European
  Research Council (ERC) for their funding under the European Union’s Horizon 2020
  research and innovation program (ERC Consolidator Grant EPIDEMICSonCHIP, No. 771402,
  to Sylvia Cremer, and ERC Starting Grant DISEASE, No. 802628, to Nathalie Stroeymeyt).
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Linda
  full_name: Sartoris, Linda
  id: 2B9284CA-F248-11E8-B48F-1D18A9856A87
  last_name: Sartoris
citation:
  ama: Sartoris L. The effect of circadian rhythm on organisational immunity of ant
    colonies. 2025. doi:<a href="https://doi.org/10.15479/AT-ISTA-19302">10.15479/AT-ISTA-19302</a>
  apa: Sartoris, L. (2025). <i>The effect of circadian rhythm on organisational immunity
    of ant colonies</i>. Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/AT-ISTA-19302">https://doi.org/10.15479/AT-ISTA-19302</a>
  chicago: Sartoris, Linda. “The Effect of Circadian Rhythm on Organisational Immunity
    of Ant Colonies.” Institute of Science and Technology Austria, 2025. <a href="https://doi.org/10.15479/AT-ISTA-19302">https://doi.org/10.15479/AT-ISTA-19302</a>.
  ieee: L. Sartoris, “The effect of circadian rhythm on organisational immunity of
    ant colonies,” Institute of Science and Technology Austria, 2025.
  ista: Sartoris L. 2025. The effect of circadian rhythm on organisational immunity
    of ant colonies. Institute of Science and Technology Austria.
  mla: Sartoris, Linda. <i>The Effect of Circadian Rhythm on Organisational Immunity
    of Ant Colonies</i>. Institute of Science and Technology Austria, 2025, doi:<a
    href="https://doi.org/10.15479/AT-ISTA-19302">10.15479/AT-ISTA-19302</a>.
  short: L. Sartoris, The Effect of Circadian Rhythm on Organisational Immunity of
    Ant Colonies, Institute of Science and Technology Austria, 2025.
corr_author: '1'
date_created: 2025-03-06T12:16:54Z
date_published: 2025-02-24T00:00:00Z
date_updated: 2026-03-02T23:31:14Z
day: '24'
ddc:
- '577'
degree_awarded: PhD
department:
- _id: GradSch
- _id: SyCr
doi: 10.15479/AT-ISTA-19302
ec_funded: 1
file:
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  date_updated: 2026-02-23T23:30:03Z
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  date_created: 2025-03-11T10:42:20Z
  date_updated: 2026-03-02T23:31:13Z
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file_date_updated: 2026-03-02T23:31:13Z
has_accepted_license: '1'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-nd/4.0/
month: '02'
oa: 1
oa_version: Published Version
page: '85'
project:
- _id: 2649B4DE-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '771402'
  name: Epidemics in ant societies on a chip
publication_identifier:
  eissn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
status: public
supervisor:
- first_name: Sylvia
  full_name: Cremer, Sylvia
  id: 2F64EC8C-F248-11E8-B48F-1D18A9856A87
  last_name: Cremer
  orcid: 0000-0002-2193-3868
title: The effect of circadian rhythm on organisational immunity of ant colonies
tmp:
  image: /images/cc_by_nc_nd.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
    (CC BY-NC-ND 4.0)
  short: CC BY-NC-ND (4.0)
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2025'
...
---
OA_embargo: 6 months
OA_place: publisher
_id: '19456'
abstract:
- lang: eng
  text: "Making decisions requires flexibly adapting to changing environments, a process
    that\r\ndepends on accurately interpreting current contingencies and integrating
    them with\r\npast experience. Two brain regions are particularly critical for
    this process, the medial\r\nprefrontal cortex (mPFC) and the hippocampus. Using
    contextual information from the\r\nhippocampus, the mPFC selects relevant cognitive
    frameworks and suppresses\r\nirrelevant ones to guide appropriate actions. Several
    studies have shown that some\r\nmPFC pyramidal neurons become spatially tuned
    when spatial information is required\r\nto guide goal-directed behavior. However,
    the role of prefrontal spatial representations\r\nin learning and decision making
    is not well understood. This work aims to characterize\r\nthe role of mPFC spatial
    tuning in supporting a contextual association task. Rats were\r\ntrained to learn
    two cue–location associations on a radial arm maze over multiple days,\r\nwhile
    we simultaneously recorded from dorsal CA1 of the hippocampus and the\r\nprelimbic
    area of the mPFC. We describe a subset of spatially tuned hippocampal and\r\nprefrontal
    pyramidal neurons that “flicker” between multiple spatial representations on\r\ndifferent
    trials, suggesting dynamic, context-dependent coding. This flickering may\r\nprovide
    a substrate for how the network reorganizes in response to task demands,\r\nlikely
    by enabling the flexible evaluation of competing representations. "
acknowledged_ssus:
- _id: PreCl
- _id: Bio
- _id: LifeSc
- _id: M-Shop
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Andrea D
  full_name: Cumpelik, Andrea D
  id: 3F158B32-F248-11E8-B48F-1D18A9856A87
  last_name: Cumpelik
  orcid: 0000-0003-1727-6612
citation:
  ama: Cumpelik AD. The role of prefrontal spatial coding in supporting a contextual
    association task. 2025. doi:<a href="https://doi.org/10.15479/AT-ISTA-19456">10.15479/AT-ISTA-19456</a>
  apa: Cumpelik, A. D. (2025). <i>The role of prefrontal spatial coding in supporting
    a contextual association task</i>. Institute of Science and Technology Austria.
    <a href="https://doi.org/10.15479/AT-ISTA-19456">https://doi.org/10.15479/AT-ISTA-19456</a>
  chicago: Cumpelik, Andrea D. “The Role of Prefrontal Spatial Coding in Supporting
    a Contextual Association Task.” Institute of Science and Technology Austria, 2025.
    <a href="https://doi.org/10.15479/AT-ISTA-19456">https://doi.org/10.15479/AT-ISTA-19456</a>.
  ieee: A. D. Cumpelik, “The role of prefrontal spatial coding in supporting a contextual
    association task,” Institute of Science and Technology Austria, 2025.
  ista: Cumpelik AD. 2025. The role of prefrontal spatial coding in supporting a contextual
    association task. Institute of Science and Technology Austria.
  mla: Cumpelik, Andrea D. <i>The Role of Prefrontal Spatial Coding in Supporting
    a Contextual Association Task</i>. Institute of Science and Technology Austria,
    2025, doi:<a href="https://doi.org/10.15479/AT-ISTA-19456">10.15479/AT-ISTA-19456</a>.
  short: A.D. Cumpelik, The Role of Prefrontal Spatial Coding in Supporting a Contextual
    Association Task, Institute of Science and Technology Austria, 2025.
corr_author: '1'
date_created: 2025-03-25T11:22:38Z
date_published: 2025-02-18T00:00:00Z
date_updated: 2026-04-07T12:37:58Z
day: '18'
ddc:
- '612'
degree_awarded: PhD
department:
- _id: GradSch
- _id: JoCs
doi: 10.15479/AT-ISTA-19456
file:
- access_level: open_access
  checksum: 1c7573303d8e5f6da3eb03d59055390f
  content_type: application/pdf
  creator: acumpeli
  date_created: 2025-03-25T11:07:55Z
  date_updated: 2025-09-30T22:30:02Z
  embargo: 2025-09-30
  file_id: '19457'
  file_name: 2025_Thesis_Cumpelik_corrections_PDFA.pdf
  file_size: 11869040
  relation: main_file
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  checksum: b93265ebd9a53f7a14100d0d48b4ff5b
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  creator: acumpeli
  date_created: 2025-03-25T11:08:05Z
  date_updated: 2025-09-30T22:30:02Z
  embargo_to: open_access
  file_id: '19458'
  file_name: 2025_Thesis_Cumpelik_corrections.docx
  file_size: 20436467
  relation: source_file
file_date_updated: 2025-09-30T22:30:02Z
has_accepted_license: '1'
keyword:
- neuroscience
- decision making
- learning
- cognitive flexibility
- medial prefrontal cortex
- hippocampus
- electrophysiology
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
page: '96'
publication_identifier:
  isbn:
  - 978-3-99078-056-5
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
status: public
supervisor:
- first_name: Jozsef L
  full_name: Csicsvari, Jozsef L
  id: 3FA14672-F248-11E8-B48F-1D18A9856A87
  last_name: Csicsvari
  orcid: 0000-0002-5193-4036
title: The role of prefrontal spatial coding in supporting a contextual association
  task
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2025'
...
---
OA_place: publisher
_id: '19533'
abstract:
- lang: eng
  text: "This thesis explores advancements in quantum remote sensing and non-equilibrium
    phase\r\ntransitions in the microwave regime, with a focus on dissipative phase
    transitions and quantumenhanced sensing.\r\nIn the first project, I experimentally
    studied photon blockade breakdown as a dissipative phase\r\ntransition in a zero-dimensional
    cavity-qubit system. By defining an appropriate thermodynamic\r\nlimit, we demonstrated
    that the observed bistability is a genuine signature of a first-order\r\nphase
    transition in this system. This work provides insight into non-equilibrium quantum\r\ndynamics
    and phase transitions in driven-dissipative open quantum systems.\r\nThe second
    project focuses on the experimental realization of a phase-conjugate receiver
    for\r\nquantum illumination (QI), a quantum sensing protocol that enhances target
    detection in noisy\r\nenvironments using entangled light. While an ideal spontaneous
    parametric down-conversion\r\n(SPDC) source and receiver could, in theory, provide
    up to a 6 dB advantage over classical\r\nillumination, no such ideal receiver
    exists. Instead, we explore an experimental realization of a\r\nphase-conjugate
    receiver for QI in the microwave regime at millikelvin temperatures using a\r\nJosephson
    parametric converter (JPC) as a source of continuous-variable Gaussian entangled\r\nsignal-idler
    pairs, where a maximum 3 dB advantage is theoretically achievable. We investigate\r\nkey
    experimental limitations that constrain practical QI performance, contributing
    to the\r\ndevelopment of quantum-enhanced sensing.\r\nAdditionally, this thesis
    presents efficient digital signal processing (DSP) techniques implemented in C++
    and Python in collaboration with Przemysław Zieliński and Luka Drmić. These\r\nmethods,
    optimized using the Intel Integrated Performance Primitives (IPP) library, have
    been\r\nessential in data acquisition, noise filtering, and correlation analysis
    across multiple research\r\nprojects. Although not real-time, these DSP techniques
    significantly enhance the accuracy of\r\nquantum measurements.\r\nOverall, this
    thesis advances quantum-enhanced sensing by establishing the thermodynamic\r\nlimit
    in a single transmon-cavity system and experimentally exploring a phase-conjugate
    receiver\r\nfor QI. These findings contribute to quantum metrology, particularly
    for weak signal detection\r\nand remote sensing in noisy environments.\r\n"
acknowledged_ssus:
- _id: ScienComp
- _id: M-Shop
- _id: NanoFab
- _id: LifeSc
- _id: SSU
acknowledgement: "I acknowledge the generous financial support of the Austrian Science
  Fund (FWF) via BeyondC\r\n(F7105) and the European Union’s Horizon 2020 research
  and innovation program (FETopen\r\nQUARTET, Grant Agreement No. 862644), which made
  this research possible. I also extend\r\nmy sincere appreciation to the MIBA workshop
  and the Institute of Science and Technology\r\nAustria nanofabrication facility
  for their technical assistance, which was instrumental in realizing\r\nthis work."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Riya
  full_name: Sett, Riya
  id: 2E6D040E-F248-11E8-B48F-1D18A9856A87
  last_name: Sett
  orcid: 0000-0001-7641-8348
citation:
  ama: Sett R.  Quantum remote sensing and non-equilibrium phase transitions in the
    microwave regime. 2025. doi:<a href="https://doi.org/10.15479/AT-ISTA-19533">10.15479/AT-ISTA-19533</a>
  apa: Sett, R. (2025). <i> Quantum remote sensing and non-equilibrium phase transitions
    in the microwave regime</i>. Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/AT-ISTA-19533">https://doi.org/10.15479/AT-ISTA-19533</a>
  chicago: Sett, Riya. “ Quantum Remote Sensing and Non-Equilibrium Phase Transitions
    in the Microwave Regime.” Institute of Science and Technology Austria, 2025. <a
    href="https://doi.org/10.15479/AT-ISTA-19533">https://doi.org/10.15479/AT-ISTA-19533</a>.
  ieee: R. Sett, “ Quantum remote sensing and non-equilibrium phase transitions in
    the microwave regime,” Institute of Science and Technology Austria, 2025.
  ista: Sett R. 2025.  Quantum remote sensing and non-equilibrium phase transitions
    in the microwave regime. Institute of Science and Technology Austria.
  mla: Sett, Riya. <i> Quantum Remote Sensing and Non-Equilibrium Phase Transitions
    in the Microwave Regime</i>. Institute of Science and Technology Austria, 2025,
    doi:<a href="https://doi.org/10.15479/AT-ISTA-19533">10.15479/AT-ISTA-19533</a>.
  short: R. Sett,  Quantum Remote Sensing and Non-Equilibrium Phase Transitions in
    the Microwave Regime, Institute of Science and Technology Austria, 2025.
corr_author: '1'
date_created: 2025-04-09T16:44:26Z
date_published: 2025-04-01T00:00:00Z
date_updated: 2026-06-03T07:16:05Z
day: '1'
ddc:
- '530'
degree_awarded: PhD
department:
- _id: GradSch
- _id: JoFi
doi: 10.15479/AT-ISTA-19533
ec_funded: 1
file:
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  relation: source_file
file_date_updated: 2025-10-11T22:30:02Z
has_accepted_license: '1'
keyword:
- phase transition
- open quantum system
- phase diagram
- cavity quantum electrodynamics
- superconducting qubits
- semiclassical physics
- quantum optics
- josephson junction
- parametric converter
- phase conjugation
- quantum radar
- quantum entanglement
- correlation
- quantum sensing
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
page: '109'
project:
- _id: 237CBA6C-32DE-11EA-91FC-C7463DDC885E
  call_identifier: H2020
  grant_number: '862644'
  name: Quantum readout techniques and technologies
- _id: bdb108fd-d553-11ed-ba76-83dc74a9864f
  grant_number: F07105
  name: QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration
    of Superconducting Quantum Circuits
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '18978'
    relation: research_data
    status: public
  - id: '19280'
    relation: part_of_dissertation
    status: public
  - id: '17183'
    relation: part_of_dissertation
    status: public
  - id: '13117'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Johannes M
  full_name: Fink, Johannes M
  id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
  last_name: Fink
  orcid: 0000-0001-8112-028X
title: ' Quantum remote sensing and non-equilibrium phase transitions in the microwave
  regime'
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: dissertation
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2025'
...
---
OA_place: publisher
OA_type: hybrid
_id: '19280'
abstract:
- lang: eng
  text: Recent advancements in superconducting circuits have enabled the experimental
    study of collective behavior of precisely controlled intermediate-scale ensembles
    of qubits. In this work, we demonstrate an atomic frequency comb formed by individual
    artificial atoms strongly coupled to a single resonator mode. We observe periodic
    microwave pulses that originate from a single coherent excitation dynamically
    interacting with the multiqubit ensemble. We show that this revival dynamics emerges
    as a consequence of the constructive and periodic rephasing of the five superconducting
    qubits forming the vacuum Rabi split comb. In the future, similar devices could
    be used as a memory with in situ tunable storage time or as an on-chip periodic
    pulse generator with nonclassical photon statistics.
acknowledged_ssus:
- _id: M-Shop
- _id: NanoFab
acknowledgement: 'The authors thank G. Arnold and R. Sahu for the discussions, L.
  Drmic for software development, the MIBA workshop and the ISTA nanofabrication facility
  for technical support, and VTT Technical Research Centre of Finland for providing
  us TWPAs for follow-up measurements. This work was supported by the Austrian Science
  Fund (FWF) [Grant DOI: 10.55776/F71] through BeyondC (F7105) and IST Austria. E. S. R.
  is the recipient of a DOC fellowship of the Austrian Academy of Sciences at IST
  Austria. J. M. F. and M. Ž. acknowledge support from the European Research Council
  under Grant Agreement No. 758053 (ERC StG QUNNECT) and a NOMIS foundation research
  grant.'
article_number: '063601'
article_processing_charge: Yes (via OA deal)
article_type: original
arxiv: 1
author:
- first_name: Elena
  full_name: Redchenko, Elena
  id: 2C21D6E8-F248-11E8-B48F-1D18A9856A87
  last_name: Redchenko
- first_name: M.
  full_name: Zens, M.
  last_name: Zens
- first_name: Martin
  full_name: Zemlicka, Martin
  id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87
  last_name: Zemlicka
  orcid: 0009-0005-0878-3032
- first_name: Matilda
  full_name: Peruzzo, Matilda
  id: 3F920B30-F248-11E8-B48F-1D18A9856A87
  last_name: Peruzzo
  orcid: 0000-0002-3415-4628
- first_name: Farid
  full_name: Hassani, Farid
  id: 2AED110C-F248-11E8-B48F-1D18A9856A87
  last_name: Hassani
  orcid: 0000-0001-6937-5773
- first_name: Riya
  full_name: Sett, Riya
  id: 2E6D040E-F248-11E8-B48F-1D18A9856A87
  last_name: Sett
  orcid: 0000-0001-7641-8348
- first_name: Przemyslaw D
  full_name: Zielinski, Przemyslaw D
  id: e198fcc4-f6e0-11ea-865d-b6a256760ee8
  last_name: Zielinski
- first_name: H. S.
  full_name: Dhar, H. S.
  last_name: Dhar
- first_name: D. O.
  full_name: Krimer, D. O.
  last_name: Krimer
- first_name: S.
  full_name: Rotter, S.
  last_name: Rotter
- first_name: Johannes M
  full_name: Fink, Johannes M
  id: 4B591CBA-F248-11E8-B48F-1D18A9856A87
  last_name: Fink
  orcid: 0000-0001-8112-028X
citation:
  ama: Redchenko E, Zens M, Zemlicka M, et al. Observation of collapse and revival
    in a superconducting atomic frequency comb. <i>Physical Review Letters</i>. 2025;134(6).
    doi:<a href="https://doi.org/10.1103/PhysRevLett.134.063601">10.1103/PhysRevLett.134.063601</a>
  apa: Redchenko, E., Zens, M., Zemlicka, M., Peruzzo, M., Hassani, F., Sett, R.,
    … Fink, J. M. (2025). Observation of collapse and revival in a superconducting
    atomic frequency comb. <i>Physical Review Letters</i>. American Physical Society.
    <a href="https://doi.org/10.1103/PhysRevLett.134.063601">https://doi.org/10.1103/PhysRevLett.134.063601</a>
  chicago: Redchenko, Elena, M. Zens, Martin Zemlicka, Matilda Peruzzo, Farid Hassani,
    Riya Sett, Przemyslaw D Zielinski, et al. “Observation of Collapse and Revival
    in a Superconducting Atomic Frequency Comb.” <i>Physical Review Letters</i>. American
    Physical Society, 2025. <a href="https://doi.org/10.1103/PhysRevLett.134.063601">https://doi.org/10.1103/PhysRevLett.134.063601</a>.
  ieee: E. Redchenko <i>et al.</i>, “Observation of collapse and revival in a superconducting
    atomic frequency comb,” <i>Physical Review Letters</i>, vol. 134, no. 6. American
    Physical Society, 2025.
  ista: Redchenko E, Zens M, Zemlicka M, Peruzzo M, Hassani F, Sett R, Zielinski PD,
    Dhar HS, Krimer DO, Rotter S, Fink JM. 2025. Observation of collapse and revival
    in a superconducting atomic frequency comb. Physical Review Letters. 134(6), 063601.
  mla: Redchenko, Elena, et al. “Observation of Collapse and Revival in a Superconducting
    Atomic Frequency Comb.” <i>Physical Review Letters</i>, vol. 134, no. 6, 063601,
    American Physical Society, 2025, doi:<a href="https://doi.org/10.1103/PhysRevLett.134.063601">10.1103/PhysRevLett.134.063601</a>.
  short: E. Redchenko, M. Zens, M. Zemlicka, M. Peruzzo, F. Hassani, R. Sett, P.D.
    Zielinski, H.S. Dhar, D.O. Krimer, S. Rotter, J.M. Fink, Physical Review Letters
    134 (2025).
corr_author: '1'
date_created: 2025-03-02T23:01:52Z
date_published: 2025-02-14T00:00:00Z
date_updated: 2026-08-11T22:30:36Z
day: '14'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.1103/PhysRevLett.134.063601
ec_funded: 1
external_id:
  arxiv:
  - '2310.04200'
  isi:
  - '001454696700003'
  pmid:
  - '40021171'
file:
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issue: '6'
language:
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month: '02'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: bdb108fd-d553-11ed-ba76-83dc74a9864f
  grant_number: F07105
  name: QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration
    of Superconducting Quantum Circuits
- _id: 26336814-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '758053'
  name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 26B354CA-B435-11E9-9278-68D0E5697425
  name: Controllable Collective States of Superconducting Qubit Ensembles
publication: Physical Review Letters
publication_identifier:
  eissn:
  - 1079-7114
  issn:
  - 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
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scopus_import: '1'
status: public
title: Observation of collapse and revival in a superconducting atomic frequency comb
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 134
year: '2025'
...
---
OA_embargo: '12'
OA_place: publisher
_id: '19722'
abstract:
- lang: eng
  text: "As root epidermal cells progress from a phase of elongation to differentiation,
    their\r\ncortical microtubule (MT) arrays exhibit a transversal-to-longitudinal
    reorientation. The\r\nhormone cytokinin, a key regulator of root development,
    facilitates these cytoskeletal\r\nchanges. However, the molecular mechanisms underlying
    hormone-mediated MT\r\nreorientation during root development are still unknown.
    Here, we find that MT reorientation\r\nin root cells differs from the existing
    model in hypocotyl cells, as it does not rely on MT plusend rescue. We show that
    cytokinin facilitates MT array reorganization during cell\r\ndifferentiation by
    promoting katanin’s (KTN1) severing activity, and by modulating KTN1’s\r\nassociation
    with microtubules. Cytokinin regulates SPIRAL2 (SPR2) in a phosphorylationdependent
    manner, directing its localization to, and stabilization of, the new MT minus-end\r\ncreated
    by katanin-mediated severing at crossovers. Notably, our findings suggest that\r\ndynamic
    and reversible phosphorylation at S579 of SPR2 is crucial for the proper functioning\r\nof
    the MT severing machinery. Finally, we identify MAP65-1 and CLASP as additional
    targets\r\nof cytokinin-dependent phosphoregulation. Cytokinin treatment decreases
    MT-MAP65-1\r\nassociation in elongating cells, likely to expose MTs to KTN1-mediated
    severing, whereas it\r\nincreases MT-CLASP association to stabilize the growing
    plus-end. In this way, cytokinin drives\r\nMT reorganization during cell development
    by simultaneously modulating several\r\nmicrotubule-associated proteins. These
    results reveal key molecular players in hormonemediated cytoskeletal regulation,
    and highlight protein phosphorylation as a powerful tool\r\nduring this process."
acknowledged_ssus:
- _id: Bio
- _id: LifeSc
acknowledgement: Special thanks to the Plant Facility.
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Syamala
  full_name: Inumella, Syamala
  id: F8660870-D756-11E9-98C5-34DFE5697425
  last_name: Inumella
  orcid: 0009-0002-5890-120X
citation:
  ama: Inumella S. Molecular mechanisms of microtubule reorganization in elongating
    root epidermal cells. 2025. doi:<a href="https://doi.org/10.15479/AT-ISTA-19722">10.15479/AT-ISTA-19722</a>
  apa: Inumella, S. (2025). <i>Molecular mechanisms of microtubule reorganization
    in elongating root epidermal cells</i>. Institute of Science and Technology Austria.
    <a href="https://doi.org/10.15479/AT-ISTA-19722">https://doi.org/10.15479/AT-ISTA-19722</a>
  chicago: Inumella, Syamala. “Molecular Mechanisms of Microtubule Reorganization
    in Elongating Root Epidermal Cells.” Institute of Science and Technology Austria,
    2025. <a href="https://doi.org/10.15479/AT-ISTA-19722">https://doi.org/10.15479/AT-ISTA-19722</a>.
  ieee: S. Inumella, “Molecular mechanisms of microtubule reorganization in elongating
    root epidermal cells,” Institute of Science and Technology Austria, 2025.
  ista: Inumella S. 2025. Molecular mechanisms of microtubule reorganization in elongating
    root epidermal cells. Institute of Science and Technology Austria.
  mla: Inumella, Syamala. <i>Molecular Mechanisms of Microtubule Reorganization in
    Elongating Root Epidermal Cells</i>. Institute of Science and Technology Austria,
    2025, doi:<a href="https://doi.org/10.15479/AT-ISTA-19722">10.15479/AT-ISTA-19722</a>.
  short: S. Inumella, Molecular Mechanisms of Microtubule Reorganization in Elongating
    Root Epidermal Cells, Institute of Science and Technology Austria, 2025.
corr_author: '1'
date_created: 2025-05-23T15:21:29Z
date_published: 2025-05-23T00:00:00Z
date_updated: 2026-06-12T08:34:29Z
day: '23'
ddc:
- '580'
degree_awarded: PhD
department:
- _id: GradSch
- _id: EvBe
doi: 10.15479/AT-ISTA-19722
file:
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  date_created: 2025-05-28T11:59:11Z
  date_updated: 2026-05-23T22:30:02Z
  embargo: 2026-05-23
  file_id: '19757'
  file_name: Final Thesis_Syamala Inumella.pdf
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  creator: sinumell
  date_created: 2025-05-28T11:59:11Z
  date_updated: 2026-05-23T22:30:02Z
  embargo_to: open_access
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  file_size: 7145703
  relation: source_file
file_date_updated: 2026-05-23T22:30:02Z
has_accepted_license: '1'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: '113'
publication_identifier:
  isbn:
  - 978-3-99078-059-6
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
status: public
supervisor:
- first_name: Eva
  full_name: Benková, Eva
  id: 38F4F166-F248-11E8-B48F-1D18A9856A87
  last_name: Benková
  orcid: 0000-0002-8510-9739
title: Molecular mechanisms of microtubule reorganization in elongating root epidermal
  cells
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2025'
...
---
OA_place: publisher
_id: '19763'
abstract:
- lang: eng
  text: "Pattern formation in developing organs is controlled by morphogens. These
    signalling\r\nmolecules form concentration gradients across tissues, thereby providing
    positional\r\ninformation that instructs the pattern of cell differentiation.
    Morphogen gradients are highly\r\ndynamic in space and time. Many factors such
    as morphogen production, spreading,\r\ndegradation, cellular rearrangements and
    others could contribute to changes in the gradient\r\nshape, yet how the spatiotemporal
    signalling dynamics arise in many systems is still unclear.\r\nWe studied the
    dynamics of morphogen signalling and tissue patterning in the developing\r\nvertebrate
    neural tube. In this system, neural crest, roof plate and distinct dorsal progenitor\r\nsubtypes
    are specified in a spatially and temporally ordered manner in response to dorsal-toventral
    gradients of BMP and WNT signalling activity. How the BMP and WNT gradients are\r\nestablished
    and interpreted to ensure ordered cell specification is poorly understood.\r\nTo
    address this question, we developed a 2D embryonic stem cell differentiation system
    that\r\ncaptures key features of dorsal neural tube development. In this system,
    differentiated\r\ncolonies display remarkable self-organised pattern formation
    in response to uniformly\r\napplied BMP ligand. We established a method of differentiating
    the colonies using\r\nmicrofabricated stencils, which allowed us to control the
    initial size and shape of colonies\r\nwithout confining cell migration and colony
    growth. This led to highly reproducible pattern\r\nformation that facilitates
    quantification.\r\nUsing this approach, we observed striking two-phase temporal
    dynamics of BMP signalling in\r\nour colonies: a BMP gradient rapidly forms from
    the periphery to the centre of colonies,\r\nsubsequently disappears and is re-established
    again in the second phase. By combining our\r\nquantitative data with a data-driven
    theoretical model, we uncovered a temporal relay\r\nmechanism that underlies this
    biphasic BMP signalling dynamics. The first signalling phase is\r\ncontrolled
    by fast tissue-autonomous negative feedback that restricts the duration of the\r\ninitial
    response to BMP. The early BMP activity gradient moreover controls the spatial\r\norganisation
    of the cell type pattern: the absence of a first phase results in disordered cell\r\ntype
    pattern. The second phase is controlled by slow positive regulation of BMP signalling
    by\r\nthe transcription factor LMX1A, a key regulator of roof plate identity.
    WNT promotes the\r\nsecond phase of BMP signalling via positive feedback on LMX1A.\r\nAltogether,
    the mechanism that we uncovered ensures the coupling of sequential\r\ndevelopmental
    events, making pattern formation spatially and temporally organised.\r\nFurthermore,
    this mechanism allows the BMP signalling pathway to be reused in different\r\ncontexts
    – first for the establishment of the neural plate border, and subsequently for
    dorsal\r\nneural progenitor patterning. Our study supports a general developmental
    principle in which\r\nmultiple morphogens interact with transcriptional networks
    resulting in complex\r\nspatiotemporal signalling dynamics that ultimately drive
    organised pattern formation."
acknowledged_ssus:
- _id: Bio
- _id: PreCl
- _id: LifeSc
acknowledgement: "My work would also not have been possible without the Imaging and
  Optics, the Life Science\r\nand the Preclinical Facility of ISTA. Your support has
  facilitated my research substantially. I\r\nalso want to thank the Graduate School
  Office for their never-ending support and their sincere\r\neffort to improve the
  PhD programme of the ISTA even further.\r\nThis work was supported by the Gesellschaft
  für Forschungsförderung Niederösterreich\r\nm.b.H. fellowship (SC19-011). Thank
  you for recognizing the importance of this project."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Stefanie
  full_name: Rus, Stefanie
  id: 4D9EC9B6-F248-11E8-B48F-1D18A9856A87
  last_name: Rus
  orcid: 0000-0001-8703-1093
citation:
  ama: Rus S. Dynamics of morphogen signalling and cell fate decisions in the dorsal
    neural tube. 2025. doi:<a href="https://doi.org/10.15479/AT-ISTA-19763">10.15479/AT-ISTA-19763</a>
  apa: Rus, S. (2025). <i>Dynamics of morphogen signalling and cell fate decisions
    in the dorsal neural tube</i>. Institute of Science and Technology Austria. <a
    href="https://doi.org/10.15479/AT-ISTA-19763">https://doi.org/10.15479/AT-ISTA-19763</a>
  chicago: Rus, Stefanie. “Dynamics of Morphogen Signalling and Cell Fate Decisions
    in the Dorsal Neural Tube.” Institute of Science and Technology Austria, 2025.
    <a href="https://doi.org/10.15479/AT-ISTA-19763">https://doi.org/10.15479/AT-ISTA-19763</a>.
  ieee: S. Rus, “Dynamics of morphogen signalling and cell fate decisions in the dorsal
    neural tube,” Institute of Science and Technology Austria, 2025.
  ista: Rus S. 2025. Dynamics of morphogen signalling and cell fate decisions in the
    dorsal neural tube. Institute of Science and Technology Austria.
  mla: Rus, Stefanie. <i>Dynamics of Morphogen Signalling and Cell Fate Decisions
    in the Dorsal Neural Tube</i>. Institute of Science and Technology Austria, 2025,
    doi:<a href="https://doi.org/10.15479/AT-ISTA-19763">10.15479/AT-ISTA-19763</a>.
  short: S. Rus, Dynamics of Morphogen Signalling and Cell Fate Decisions in the Dorsal
    Neural Tube, Institute of Science and Technology Austria, 2025.
corr_author: '1'
date_created: 2025-05-30T09:14:58Z
date_published: 2025-05-29T00:00:00Z
date_updated: 2026-04-14T09:50:53Z
day: '29'
ddc:
- '570'
degree_awarded: PhD
department:
- _id: AnKi
- _id: GradSch
doi: 10.15479/AT-ISTA-19763
file:
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  creator: cchlebak
  date_created: 2025-05-30T09:10:22Z
  date_updated: 2025-11-30T23:30:02Z
  embargo: 2025-11-30
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  file_size: 42879974
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  checksum: 0c87dd5fc803450a47b20736b5f86a2f
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  creator: cchlebak
  date_created: 2025-05-30T09:31:15Z
  date_updated: 2025-11-30T23:30:02Z
  embargo_to: open_access
  file_id: '19765'
  file_name: Thesis_Lehr_emptyPages.docx
  file_size: 18731094
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file_date_updated: 2025-11-30T23:30:02Z
has_accepted_license: '1'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: '129'
project:
- _id: 9B9B39FA-BA93-11EA-9121-9846C619BF3A
  grant_number: SC19-011
  name: The regulatory logic of pattern formation in the vertebrate dorsal neural
    tube
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '18601'
    relation: part_of_dissertation
    status: public
  - id: '17148'
    relation: part_of_dissertation
    status: public
  - id: '18807'
    relation: part_of_dissertation
    status: public
  - id: '13136'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Anna
  full_name: Kicheva, Anna
  id: 3959A2A0-F248-11E8-B48F-1D18A9856A87
  last_name: Kicheva
  orcid: 0000-0003-4509-4998
title: Dynamics of morphogen signalling and cell fate decisions in the dorsal neural
  tube
tmp:
  image: /images/cc_by_nc_nd.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
    (CC BY-NC-ND 4.0)
  short: CC BY-NC-ND (4.0)
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2025'
...
---
OA_place: publisher
OA_type: hybrid
_id: '18807'
abstract:
- lang: eng
  text: Developing tissues interpret dynamic changes in morphogen activity to generate
    cell type diversity. To quantitatively study bone morphogenetic protein (BMP)
    signaling dynamics in the mouse neural tube, we developed an embryonic stem cell
    differentiation system tailored for growing tissues. Differentiating cells form
    striking self-organized patterns of dorsal neural tube cell types driven by sequential
    phases of BMP signaling that are observed both in vitro and in vivo. Data-driven
    biophysical modeling showed that these dynamics result from coupling fast negative
    feedback with slow positive regulation of signaling by the specification of an
    endogenous BMP source. Thus, in contrast to relays that propagate morphogen signaling
    in space, we identify a BMP signaling relay that operates in time. This mechanism
    allows for a rapid initial concentration-sensitive response that is robustly terminated,
    thereby regulating balanced sequential cell type generation. Our study provides
    an experimental and theoretical framework to understand how signaling dynamics
    are exploited in developing tissues.
acknowledgement: We thank A. Miller and N. Papalopulu for reagents and J. Briscoe
  for comments on the manuscript. Work in the A.K. lab is supported by ISTA; the European
  Research Council under Horizon Europe, grant 101044579; and the Austrian Science
  Fund (FWF), grant https://doi.org/10.55776/F78. S.L. is supported by Gesellschaft
  für Forschungsförderung Niederösterreich m.b.H. fellowship SC19-011. D.B.B. was
  supported by the NOMIS foundation as a NOMIS Fellow and by an EMBO Postdoctoral
  Fellowship (ALTF 343-2022).
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Stefanie
  full_name: Rus, Stefanie
  id: 4D9EC9B6-F248-11E8-B48F-1D18A9856A87
  last_name: Rus
  orcid: 0000-0001-8703-1093
- first_name: David
  full_name: Brückner, David
  id: e1e86031-6537-11eb-953a-f7ab92be508d
  last_name: Brückner
  orcid: 0000-0001-7205-2975
- first_name: Thomas
  full_name: Minchington, Thomas
  id: 7d1648cb-19e9-11eb-8e7a-f8c037fb3e3f
  last_name: Minchington
- first_name: Martina
  full_name: Greunz, Martina
  id: 48A59534-F248-11E8-B48F-1D18A9856A87
  last_name: Greunz
- first_name: Jack
  full_name: Merrin, Jack
  id: 4515C308-F248-11E8-B48F-1D18A9856A87
  last_name: Merrin
  orcid: 0000-0001-5145-4609
- first_name: Edouard B
  full_name: Hannezo, Edouard B
  id: 3A9DB764-F248-11E8-B48F-1D18A9856A87
  last_name: Hannezo
  orcid: 0000-0001-6005-1561
- first_name: Anna
  full_name: Kicheva, Anna
  id: 3959A2A0-F248-11E8-B48F-1D18A9856A87
  last_name: Kicheva
  orcid: 0000-0003-4509-4998
citation:
  ama: Rus S, Brückner D, Minchington T, et al. Self-organized pattern formation in
    the developing mouse neural tube by a temporal relay of BMP signaling. <i>Developmental
    Cell</i>. 2025;60(4):567-580. doi:<a href="https://doi.org/10.1016/j.devcel.2024.10.024">10.1016/j.devcel.2024.10.024</a>
  apa: Rus, S., Brückner, D., Minchington, T., Greunz, M., Merrin, J., Hannezo, E.
    B., &#38; Kicheva, A. (2025). Self-organized pattern formation in the developing
    mouse neural tube by a temporal relay of BMP signaling. <i>Developmental Cell</i>.
    Elsevier. <a href="https://doi.org/10.1016/j.devcel.2024.10.024">https://doi.org/10.1016/j.devcel.2024.10.024</a>
  chicago: Rus, Stefanie, David Brückner, Thomas Minchington, Martina Greunz, Jack
    Merrin, Edouard B Hannezo, and Anna Kicheva. “Self-Organized Pattern Formation
    in the Developing Mouse Neural Tube by a Temporal Relay of BMP Signaling.” <i>Developmental
    Cell</i>. Elsevier, 2025. <a href="https://doi.org/10.1016/j.devcel.2024.10.024">https://doi.org/10.1016/j.devcel.2024.10.024</a>.
  ieee: S. Rus <i>et al.</i>, “Self-organized pattern formation in the developing
    mouse neural tube by a temporal relay of BMP signaling,” <i>Developmental Cell</i>,
    vol. 60, no. 4. Elsevier, pp. 567–580, 2025.
  ista: Rus S, Brückner D, Minchington T, Greunz M, Merrin J, Hannezo EB, Kicheva
    A. 2025. Self-organized pattern formation in the developing mouse neural tube
    by a temporal relay of BMP signaling. Developmental Cell. 60(4), 567–580.
  mla: Rus, Stefanie, et al. “Self-Organized Pattern Formation in the Developing Mouse
    Neural Tube by a Temporal Relay of BMP Signaling.” <i>Developmental Cell</i>,
    vol. 60, no. 4, Elsevier, 2025, pp. 567–80, doi:<a href="https://doi.org/10.1016/j.devcel.2024.10.024">10.1016/j.devcel.2024.10.024</a>.
  short: S. Rus, D. Brückner, T. Minchington, M. Greunz, J. Merrin, E.B. Hannezo,
    A. Kicheva, Developmental Cell 60 (2025) 567–580.
corr_author: '1'
date_created: 2025-01-09T11:25:47Z
date_published: 2025-02-24T00:00:00Z
date_updated: 2026-08-11T22:30:37Z
day: '24'
ddc:
- '570'
department:
- _id: AnKi
- _id: EdHa
- _id: NanoFab
doi: 10.1016/j.devcel.2024.10.024
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  name: Mechanisms of tissue size regulation in spinal cord development
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  name: Stem Cell Modulation in Neural Development and Regeneration/ P02-Morphogen
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publisher: Elsevier
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title: Self-organized pattern formation in the developing mouse neural tube by a temporal
  relay of BMP signaling
tmp:
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abstract:
- lang: eng
  text: "Males and females of many  species differ in morphology, physiology, and
    behavior. In taxa\r\nwith genetic sex determination, sexual differentiation arises
    largely from sex-biased gene\r\nexpression, which varies across tissues, developmental
    stages, and lineages. Increasing\r\nevidence highlights chromatin configuration,
    which can exist in open or closed states, and can\r\nbe shaped by sex-determination
    path ways, as a key regulatory layer of this dimorphism.\r\nDegeneration of the
    Y or W chromosome further contributes to sex -specific differences by\r\naltering
    gene copy numbers relative to autosomes in heterogametic sex. To mitigate these\r\nimbalances,
    many eukaryotes have independently evolved dosage compensation mechanisms,\r\noften
    mediated through chromatin -level regulation. In this thesis, we investigate the\r\nevolutionary
    dynamics of sex chromosome differentiation in two species, Artemia franciscana\r\nand
    Cameraria  ohridella , with a particular focus on the extent of dosage compensation\r\nfollowing
    gene loss in the heterogametic sex and the potential chromatin-based mechanisms\r\nunderlying
    this process. We further characterize sex -biased gene expression and its regulation\r\nthrough
    histone modifications. Our analyses also reveal that the A. franciscana genome
    is\r\nhighly repetitive, with many genes containing intronic transposable elements.
    We find that\r\nenrichment of histonemo difications associated with constitutive
    heterochromatin, positively\r\ncorrelates with variation in gene expression levels.
    Collectively, these findings underscore role\r\nof chromatin regulation in shaping
    the evolution of sex chromosomes and sexual\r\ndifferentiation. "
acknowledged_ssus:
- _id: ScienComp
acknowledgement: "This work was supported by the Austrian Science Fund (FWF) through
  grants PAT8748323\r\nand SFB F88-10 awarded to Professor Beatriz Vicoso."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Vincent K
  full_name: Bett, Vincent K
  id: 57854184-AAE0-11E9-8D04-98D6E5697425
  last_name: Bett
citation:
  ama: Bett VK. Evolution and regulation of the Z chromosome. 2025. doi:<a href="https://doi.org/10.15479/AT-ISTA-20449">10.15479/AT-ISTA-20449</a>
  apa: Bett, V. K. (2025). <i>Evolution and regulation of the Z chromosome</i>. Institute
    of Science and Technology Austria. <a href="https://doi.org/10.15479/AT-ISTA-20449">https://doi.org/10.15479/AT-ISTA-20449</a>
  chicago: Bett, Vincent K. “Evolution and Regulation of the Z Chromosome.” Institute
    of Science and Technology Austria, 2025. <a href="https://doi.org/10.15479/AT-ISTA-20449">https://doi.org/10.15479/AT-ISTA-20449</a>.
  ieee: V. K. Bett, “Evolution and regulation of the Z chromosome,” Institute of Science
    and Technology Austria, 2025.
  ista: Bett VK. 2025. Evolution and regulation of the Z chromosome. Institute of
    Science and Technology Austria.
  mla: Bett, Vincent K. <i>Evolution and Regulation of the Z Chromosome</i>. Institute
    of Science and Technology Austria, 2025, doi:<a href="https://doi.org/10.15479/AT-ISTA-20449">10.15479/AT-ISTA-20449</a>.
  short: V.K. Bett, Evolution and Regulation of the Z Chromosome, Institute of Science
    and Technology Austria, 2025.
corr_author: '1'
date_created: 2025-10-11T08:18:51Z
date_published: 2025-10-10T00:00:00Z
date_updated: 2026-06-12T08:32:16Z
day: '10'
ddc:
- '576'
degree_awarded: PhD
department:
- _id: GradSch
- _id: BeVi
doi: 10.15479/AT-ISTA-20449
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language:
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month: '10'
oa: 1
oa_version: Published Version
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project:
- _id: 8ed82125-16d5-11f0-9cad-fbcae312235b
  grant_number: PAT 8748323
  name: Sex chromosomes in evolution and development
- _id: 34ae1506-11ca-11ed-8bc3-c14f4c474396
  grant_number: F8810
  name: The highjacking of meiosis for asexual reproduction
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
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  - id: '15009'
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status: public
supervisor:
- first_name: Beatriz
  full_name: Vicoso, Beatriz
  id: 49E1C5C6-F248-11E8-B48F-1D18A9856A87
  last_name: Vicoso
  orcid: 0000-0002-4579-8306
title: Evolution and regulation of the Z chromosome
tmp:
  image: /images/cc_by.png
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type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2025'
...
---
OA_place: publisher
_id: '20694'
abstract:
- lang: eng
  text: "Understanding the mechanisms underlying speciation is a central aim of evolutionary
    biology.\r\nA persistent challenge in the field is to identify loci that contribute
    to reproductive isolation,\r\nwhile disentangling signals of selection from demography,
    linkage and intrinsic genomic\r\nfeatures. Traditional population genomic approaches
    that rely on site-based statistics in\r\narbitrary fixed windows face inherent
    limitations, as they conflate historical and\r\ncontemporary processes of divergence
    and overlook haplotype structure. Recent advances in\r\nwhole-genome sequencing
    and methods to infer ancestral recombination graphs (ARGs) now\r\noffer the opportunity
    to study genealogical relationships explicitly, revealing how lineages\r\ncoalesce
    and recombine through time. By directly analysing haplotype clustering by species\r\nor
    phenotype and their patterns of coalescence, ARG-based methods show promise for\r\ndiagnosing
    sweeps, identifying barrier loci maintained under divergent selection amid gene\r\nflow,
    and tracing their evolutionary history.\r\nIn this thesis, I explore the utility
    of genealogical approaches for studying species\r\ndivergence. In chapter 2, I
    propose a conceptual framework for defining haplotype blocks\r\nthrough the structure
    of the ARG, using simulations and empirical data to highlight how\r\ngenealogical
    processes generate rich and often overlooked haplotypic patterns.\r\nIn chapter
    3, I examine the genomic basis of a key evolutionary innovation in marine\r\nsnails
    Littorina. These snails offer a unique opportunity to study an innovation because
    they\r\ninclude a very recent transition from egg-laying to live bearing, yet
    snails with the different\r\nreproductive modes are not reciprocally monophyletic.
    I exploited this by using topology\r\nclustering in ARG-derived local genealogical
    trees to pinpoint narrow genomic regions or\r\nhaplotype blocks that carry swept
    alleles, thus revealing that the transition from egg-laying\r\nto live-bearing
    involves multiple, live-bearer-specific sweeps.\r\nChapter 4 establishes a population-scale,
    phased genomic resource for Antirrhinum\r\nmajus, using cost-effective haplotagging,
    then optimizes imputation from low-coverage data\r\nagainst high-accuracy KASP
    sequencing to maximize sequence completeness with modest\r\naccuracy trade-offs
    against a traditional short-read sequence pipeline. A hybrid phasing\r\nstrategy
    combines molecular phasing with statistical phasing to generate phased whole\r\ngenome
    sequences of 1084 Antirrhinum individuals at a fraction of long-read sequencing\r\ncosts.\r\nIn
    chapter 5, I analyse hybridising populations from two replicate hybrid zones to
    find\r\na parallel genetic basis of flower colour, amidst the noise in genomic
    differentiation landscape\r\ndriven by variation in demographic history. While
    outlier genome scans of FST failed to dissect\r\nthe causes of differentiation,
    ARG-based topology clustering revealed a reuse of colour\r\nassociated haplotypes
    across hybrid zones. In addition to the biological insight, this chapter\r\nalso
    presents a comparison of the latest ARG inference tools, showing that signals
    of\r\nAbstract\r\nviii\r\ntopological clustering qualitatively agree between methods,
    despite differences in the tree\r\nsequences.\r\nNext, in chapter 6, by leveraging
    ~1000 individuals in one of the hybrid zones, I\r\nintegrated genome-wide association
    studies of floral pigmentation with genealogical\r\ninference, to test for additional
    colour loci, and confirm the effect of previously described loci.\r\nThis work
    demonstrates that flower colour variation is driven by a small number of large
    effect\r\nloci, while also hinting at the presence of a new candidate regulatory
    factor.\r\nFinally in chapter 7, in a preliminary analysis, I begin to dissect
    the genomic island of\r\nspeciation around Rosea/Eluta to understand its evolutionary
    origins. My results show that it\r\nconsists of 5 highly divergent loci, each
    of which is associated with flower colour. Using\r\npatterns of coalescence in
    genealogical trees, I find evidence of staggered selective sweeps\r\nand a persistent
    localized barrier to gene flow within an otherwise permeable genome.\r\nTogether,
    these chapters add to the increasing pool of studies using genealogical\r\napproaches
    to complement and extend site-based statistics to use haplotype structures in\r\nspeciation
    research. By tracking haplotypes directly and connecting genealogical clustering
    to\r\npopulation processes, ARG-based inference promises to provide new insights
    into how local\r\nselective pressures, demographic history, and long-term barriers
    interact to shape the\r\ngenomic architecture of divergence. By underscoring the
    value of ARGs in revealing the finescale origins and maintenance of biodiversity,
    this thesis presents cautious optimism about\r\nthe benefits of using genealogical
    inference to learn more than what site-based statistics\r\ncould tell us."
acknowledged_ssus:
- _id: ScienComp
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Arka
  full_name: Pal, Arka
  id: 6AAB2240-CA9A-11E9-9C1A-D9D1E5697425
  last_name: Pal
  orcid: 0000-0002-4530-8469
citation:
  ama: Pal A. Using genealogies to study the genomic basis of species divergence.
    2025. doi:<a href="https://doi.org/10.15479/AT-ISTA-20694">10.15479/AT-ISTA-20694</a>
  apa: Pal, A. (2025). <i>Using genealogies to study the genomic basis of species
    divergence</i>. Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/AT-ISTA-20694">https://doi.org/10.15479/AT-ISTA-20694</a>
  chicago: Pal, Arka. “Using Genealogies to Study the Genomic Basis of Species Divergence.”
    Institute of Science and Technology Austria, 2025. <a href="https://doi.org/10.15479/AT-ISTA-20694">https://doi.org/10.15479/AT-ISTA-20694</a>.
  ieee: A. Pal, “Using genealogies to study the genomic basis of species divergence,”
    Institute of Science and Technology Austria, 2025.
  ista: Pal A. 2025. Using genealogies to study the genomic basis of species divergence.
    Institute of Science and Technology Austria.
  mla: Pal, Arka. <i>Using Genealogies to Study the Genomic Basis of Species Divergence</i>.
    Institute of Science and Technology Austria, 2025, doi:<a href="https://doi.org/10.15479/AT-ISTA-20694">10.15479/AT-ISTA-20694</a>.
  short: A. Pal, Using Genealogies to Study the Genomic Basis of Species Divergence,
    Institute of Science and Technology Austria, 2025.
corr_author: '1'
date_created: 2025-11-25T13:19:11Z
date_published: 2025-11-25T00:00:00Z
date_updated: 2026-04-28T13:20:36Z
day: '25'
ddc:
- '576'
- '578'
degree_awarded: PhD
department:
- _id: GradSch
- _id: NiBa
doi: 10.15479/AT-ISTA-20694
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has_accepted_license: '1'
language:
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month: '11'
oa: 1
oa_version: Published Version
page: '268'
project:
- _id: bd6958e0-d553-11ed-ba76-86eba6a76c00
  grant_number: '101055327'
  name: Understanding the evolution of continuous genomes
- _id: 05959E1C-7A3F-11EA-A408-12923DDC885E
  grant_number: P32166
  name: Snapdragon Speciation
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
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    relation: part_of_dissertation
    status: public
  - id: '14796'
    relation: part_of_dissertation
    status: public
  - id: '20190'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Nicholas H
  full_name: Barton, Nicholas H
  id: 4880FE40-F248-11E8-B48F-1D18A9856A87
  last_name: Barton
  orcid: 0000-0002-8548-5240
title: Using genealogies to study the genomic basis of species divergence
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    (CC BY-NC-ND 4.0)
  short: CC BY-NC-ND (4.0)
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2025'
...
---
OA_place: publisher
OA_type: hybrid
PlanS_conform: '1'
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abstract:
- lang: eng
  text: 'A major goal of speciation research is identifying loci that underpin barriers
    to gene flow. Population genomics takes a ‘bottom-up’ approach, scanning the genome
    for molecular signatures of processes that drive or maintain divergence. However,
    interpreting the ‘genomic landscape’ of speciation is complicated, because genome
    scans conflate multiple processes, most of which are not informative about gene
    flow. However, studying replicated population contrasts, including multiple incidences
    of secondary contact, can strengthen inferences. In this paper, we use linked-read
    sequencing (haplotagging), FST scans and genealogical methods to characterise
    the genomic landscape associated with replicate hybrid zone formation. We studied
    two flower colour varieties of the common snapdragon, Antirrhinum majus subspecies
    majus, that form secondary hybrid zones in multiple independent valleys in the
    Pyrenees. Consistent with past work, we found very low differentiation at one
    well-studied zone (Planoles). However, at a second zone (Avellanet), we found
    stronger differentiation and greater heterogeneity, which we argue is due to differences
    in the amount of introgression following secondary contact. Topology weighting
    of genealogical trees identified loci where haplotype diversity was associated
    with the two snapdragon varieties. Two of the strongest associations were at previously
    identified flower colour loci: Flavia, that affects yellow pigmentation, and Rosea/Eluta,
    two linked loci that affect magenta pigmentation. Preliminary analysis of coalescence
    times provides additional evidence for selective sweeps at these loci and barriers
    to gene flow. Our study highlights the impact of demographic history on the differentiation
    landscape, emphasising the need to distinguish between historical divergence and
    recent introgression.'
acknowledged_ssus:
- _id: ScienComp
acknowledgement: 'We thank ESEB Godfrey Hewitt Mobility Award for supporting AP’s
  research stay at UC Davis. We thank Tom Ellis, Parvathy Surendranadh, and other
  Barton Group and Coop Lab members for stimulating discussions. We are grateful to
  all the interns and volunteers who have helped us with fieldwork. We thank Eva Salmerón
  Mateu for her assistance in fieldwork logistics at the field station, El Serrat.
  We are grateful to Enrico Coen and his research group for providing the Antirrhinum
  molle PoolSeq data used in the allele polarisation. We are also thankful to Enrico
  Coen and Cristophe Thébaud for discovering the Avellanet hybrid zone, followed up
  with sampling led by D.L.F. in 2017. The study was supported by Austrian Science
  Fund (FWF) Grant (Snapdragon Speciation P32166, awarded to D.L.F.); ERC (Advanced
  Grant HaplotypeStructure 101055327, awarded to NHB); ERC (POC Grant 101069216, awarded
  to Y.F.C.) and the National Institutes of Health (NIH R35 GM136290, awarded to G.C.).
  Y.F.C. was supported by the Max Planck Society. Computing infrastructure for bioinformatics
  and analyses was provided by ISTA High Performance Cluster. '
article_number: e70067
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Arka
  full_name: Pal, Arka
  id: 6AAB2240-CA9A-11E9-9C1A-D9D1E5697425
  last_name: Pal
  orcid: 0000-0002-4530-8469
- first_name: Daria
  full_name: Shipilina, Daria
  id: 428A94B0-F248-11E8-B48F-1D18A9856A87
  last_name: Shipilina
  orcid: 0000-0002-1145-9226
- first_name: Alan
  full_name: Le Moan, Alan
  last_name: Le Moan
- first_name: Adrian J.
  full_name: Mcnairn, Adrian J.
  last_name: Mcnairn
- first_name: Jennifer K.
  full_name: Grenier, Jennifer K.
  last_name: Grenier
- first_name: Marek
  full_name: Kucka, Marek
  last_name: Kucka
- first_name: Graham
  full_name: Coop, Graham
  last_name: Coop
- first_name: Yingguang Frank
  full_name: Chan, Yingguang Frank
  last_name: Chan
- first_name: Nicholas H
  full_name: Barton, Nicholas H
  id: 4880FE40-F248-11E8-B48F-1D18A9856A87
  last_name: Barton
  orcid: 0000-0002-8548-5240
- first_name: David
  full_name: Field, David
  id: 419049E2-F248-11E8-B48F-1D18A9856A87
  last_name: Field
  orcid: 0000-0002-4014-8478
- first_name: Sean
  full_name: Stankowski, Sean
  id: 43161670-5719-11EA-8025-FABC3DDC885E
  last_name: Stankowski
citation:
  ama: Pal A, Shipilina D, Le Moan A, et al. Genealogical analysis of replicate flower
    colour hybrid zones in Antirrhinum. <i>Molecular Ecology</i>. 2025;34(22). doi:<a
    href="https://doi.org/10.1111/mec.70067">10.1111/mec.70067</a>
  apa: Pal, A., Shipilina, D., Le Moan, A., Mcnairn, A. J., Grenier, J. K., Kucka,
    M., … Stankowski, S. (2025). Genealogical analysis of replicate flower colour
    hybrid zones in Antirrhinum. <i>Molecular Ecology</i>. Wiley. <a href="https://doi.org/10.1111/mec.70067">https://doi.org/10.1111/mec.70067</a>
  chicago: Pal, Arka, Daria Shipilina, Alan Le Moan, Adrian J. Mcnairn, Jennifer K.
    Grenier, Marek Kucka, Graham Coop, et al. “Genealogical Analysis of Replicate
    Flower Colour Hybrid Zones in Antirrhinum.” <i>Molecular Ecology</i>. Wiley, 2025.
    <a href="https://doi.org/10.1111/mec.70067">https://doi.org/10.1111/mec.70067</a>.
  ieee: A. Pal <i>et al.</i>, “Genealogical analysis of replicate flower colour hybrid
    zones in Antirrhinum,” <i>Molecular Ecology</i>, vol. 34, no. 22. Wiley, 2025.
  ista: Pal A, Shipilina D, Le Moan A, Mcnairn AJ, Grenier JK, Kucka M, Coop G, Chan
    YF, Barton NH, Field D, Stankowski S. 2025. Genealogical analysis of replicate
    flower colour hybrid zones in Antirrhinum. Molecular Ecology. 34(22), e70067.
  mla: Pal, Arka, et al. “Genealogical Analysis of Replicate Flower Colour Hybrid
    Zones in Antirrhinum.” <i>Molecular Ecology</i>, vol. 34, no. 22, e70067, Wiley,
    2025, doi:<a href="https://doi.org/10.1111/mec.70067">10.1111/mec.70067</a>.
  short: A. Pal, D. Shipilina, A. Le Moan, A.J. Mcnairn, J.K. Grenier, M. Kucka, G.
    Coop, Y.F. Chan, N.H. Barton, D. Field, S. Stankowski, Molecular Ecology 34 (2025).
corr_author: '1'
date_created: 2025-08-17T22:01:37Z
date_published: 2025-11-01T00:00:00Z
date_updated: 2026-08-11T22:30:41Z
day: '01'
ddc:
- '570'
department:
- _id: NiBa
doi: 10.1111/mec.70067
external_id:
  isi:
  - '001546622100001'
file:
- access_level: open_access
  checksum: c586fc674df4e7dd6e43aef87a52c6f6
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  creator: dernst
  date_created: 2026-01-05T13:47:47Z
  date_updated: 2026-01-05T13:47:47Z
  file_id: '20958'
  file_name: 2025_MolecEcology_Pal.pdf
  file_size: 9886694
  relation: main_file
  success: 1
file_date_updated: 2026-01-05T13:47:47Z
has_accepted_license: '1'
intvolume: '        34'
isi: 1
issue: '22'
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
project:
- _id: 05959E1C-7A3F-11EA-A408-12923DDC885E
  grant_number: P32166
  name: Snapdragon Speciation
- _id: bd6958e0-d553-11ed-ba76-86eba6a76c00
  grant_number: '101055327'
  name: Understanding the evolution of continuous genomes
publication: Molecular Ecology
publication_identifier:
  eissn:
  - 1365-294X
  issn:
  - 0962-1083
publication_status: published
publisher: Wiley
quality_controlled: '1'
related_material:
  link:
  - description: News on ISTA website
    relation: press_release
    url: https://ista.ac.at/en/news/snapdragon-secrets/
  record:
  - id: '20694'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Genealogical analysis of replicate flower colour hybrid zones in Antirrhinum
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 34
year: '2025'
...
---
OA_place: publisher
_id: '19993'
abstract:
- lang: eng
  text: "Ants are frequently challenged by different pathogens, which they counter
    with\r\nindividual and collective responses. Usually, the pathogens like fungi
    or viruses are\r\nsolitary and passive pathogens transmitted from host to host.
    Here, we use a nematobacterial pathogen complex to study worm-borne disease in
    black garden ants. These\r\nentomopathogenic nematodes are active parasites with
    an own behavior and chasing\r\npray.\r\nIn the first chapter, we investigated
    the basic biology of the host-pathogen relationship.\r\nWe tested different ant
    life stages and found that adult ants display defense behaviors\r\nand are generally
    resistant to nematode infection, whereas brood is highly susceptible.\r\nIn the
    case of worker pupae, we found a slight protective effect of the cocoon. When\r\nlarvae
    are accompanied by adults, meaning a queen or a group of workers, survival is\r\nsignificantly
    enhanced. Moreover, we found that nematodes can transmit from infected\r\ncadavers
    to healthy worker larvae, confirming a transmissible disease in ants. Again,\r\nworker
    presence significantly reduces transmission risk. In the end, we were also able\r\nto
    disentangle the pathogen system and investigate the pathogenic effect of the\r\nbacterial
    and nematode components.\r\nIn the second chapter, we studied the effect of multiple
    infections in adult queens and\r\nqueen larvae. By multiple exposures in the mode
    of coinfection and superinfections,\r\nwe wanted to assess the detrimental effect
    of combined fungal and nematode\r\nexposure to better understand how the pathogens
    interact with each other in an ant\r\nhost. We found instances where combined
    exposure lead to higher mortality in a given\r\ntime frame in both, adult queens
    and queen larvae.\r\nOverall entomopathogenic nematodes are a promising model
    to study worm infections\r\nin ants which extend our knowledge on collective disease
    defense."
acknowledged_ssus:
- _id: LifeSc
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Florian
  full_name: Strahodinsky, Florian
  id: 979E35EE-C996-11E9-8C7C-CF13E6697425
  last_name: Strahodinsky
citation:
  ama: Strahodinsky F. Social immunity in a tri-partite host-pathogen relationship.
    2025. doi:<a href="https://doi.org/10.15479/AT-ISTA-19993">10.15479/AT-ISTA-19993</a>
  apa: Strahodinsky, F. (2025). <i>Social immunity in a tri-partite host-pathogen
    relationship</i>. Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/AT-ISTA-19993">https://doi.org/10.15479/AT-ISTA-19993</a>
  chicago: Strahodinsky, Florian. “Social Immunity in a Tri-Partite Host-Pathogen
    Relationship.” Institute of Science and Technology Austria, 2025. <a href="https://doi.org/10.15479/AT-ISTA-19993">https://doi.org/10.15479/AT-ISTA-19993</a>.
  ieee: F. Strahodinsky, “Social immunity in a tri-partite host-pathogen relationship,”
    Institute of Science and Technology Austria, 2025.
  ista: Strahodinsky F. 2025. Social immunity in a tri-partite host-pathogen relationship.
    Institute of Science and Technology Austria.
  mla: Strahodinsky, Florian. <i>Social Immunity in a Tri-Partite Host-Pathogen Relationship</i>.
    Institute of Science and Technology Austria, 2025, doi:<a href="https://doi.org/10.15479/AT-ISTA-19993">10.15479/AT-ISTA-19993</a>.
  short: F. Strahodinsky, Social Immunity in a Tri-Partite Host-Pathogen Relationship,
    Institute of Science and Technology Austria, 2025.
corr_author: '1'
date_created: 2025-07-10T14:12:20Z
date_published: 2025-07-11T00:00:00Z
date_updated: 2026-04-07T12:39:58Z
day: '11'
ddc:
- '570'
degree_awarded: PhD
department:
- _id: GradSch
- _id: SyCr
doi: 10.15479/AT-ISTA-19993
file:
- access_level: closed
  checksum: df3a02f0d937ea9a3d79d5fb94fff097
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  creator: fstrahod
  date_created: 2025-07-14T13:18:37Z
  date_updated: 2026-01-15T23:30:03Z
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  file_id: '20021'
  file_name: Thesis_Florian_Strahodinsky_DOCX.docx
  file_size: 9857392
  relation: source_file
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  content_type: application/pdf
  creator: fstrahod
  date_created: 2025-07-14T13:18:38Z
  date_updated: 2026-01-15T23:30:03Z
  embargo: 2026-01-15
  file_id: '20022'
  file_name: Thesis_Florian_Strahodinsky_PDF.pdf
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  relation: main_file
file_date_updated: 2026-01-15T23:30:03Z
has_accepted_license: '1'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: '138'
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
status: public
supervisor:
- first_name: Sylvia
  full_name: Cremer, Sylvia
  id: 2F64EC8C-F248-11E8-B48F-1D18A9856A87
  last_name: Cremer
  orcid: 0000-0002-2193-3868
title: Social immunity in a tri-partite host-pathogen relationship
tmp:
  image: /images/cc_by_nc_nd.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
    (CC BY-NC-ND 4.0)
  short: CC BY-NC-ND (4.0)
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2025'
...
---
OA_place: publisher
_id: '20470'
abstract:
- lang: eng
  text: "Systems design has classically relied on composable systems, in which individual
    subsystems\r\nhave defined inputs, outputs, and interactions with each other;
    however, attempts at\r\ndesigning complex systems in synthetic biology has often
    run in to issues of crosstalk and\r\ninterference, given that these systems must
    function within the context of the host. In nature,\r\nmobile genetic elements
    are systems that have evolved to travel between hosts, and thus\r\nappear to be
    a good candidate with which to evaluate composability. Selecting temperate\r\nphages
    as a model system, I used mathematical modelling to identify sources of information\r\nthat
    temperate phages should respond to. I found that essential proteins of temperate
    phages\r\ncan interfere with potential hosts, indicating limitations to composability.
    I also designed a\r\nlysogeny reporter construct and characterize its behavior
    across various laboratory and\r\nenvironmental strains, finding differences in
    phage lambda lysogens, and potential\r\ninterference from prophages that already
    exist within the environmental strains. Although\r\nthe information gathered is
    not conclusive, it suggests that composability is not a key property\r\nof temperate
    phages, implying that biological systems may not be composable, and that other\r\nsystem
    design principles should be considered when designing synthetic systems."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Bryan
  full_name: Wu, Bryan
  id: 3C521EBA-F248-11E8-B48F-1D18A9856A87
  last_name: Wu
citation:
  ama: Wu B. An examination on phages as a naturally composable system. 2025. doi:<a
    href="https://doi.org/10.15479/AT-ISTA-20470">10.15479/AT-ISTA-20470</a>
  apa: Wu, B. (2025). <i>An examination on phages as a naturally composable system</i>.
    Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/AT-ISTA-20470">https://doi.org/10.15479/AT-ISTA-20470</a>
  chicago: Wu, Bryan. “An Examination on Phages as a Naturally Composable System.”
    Institute of Science and Technology Austria, 2025. <a href="https://doi.org/10.15479/AT-ISTA-20470">https://doi.org/10.15479/AT-ISTA-20470</a>.
  ieee: B. Wu, “An examination on phages as a naturally composable system,” Institute
    of Science and Technology Austria, 2025.
  ista: Wu B. 2025. An examination on phages as a naturally composable system. Institute
    of Science and Technology Austria.
  mla: Wu, Bryan. <i>An Examination on Phages as a Naturally Composable System</i>.
    Institute of Science and Technology Austria, 2025, doi:<a href="https://doi.org/10.15479/AT-ISTA-20470">10.15479/AT-ISTA-20470</a>.
  short: B. Wu, An Examination on Phages as a Naturally Composable System, Institute
    of Science and Technology Austria, 2025.
corr_author: '1'
date_created: 2025-10-15T13:30:21Z
date_published: 2025-10-30T00:00:00Z
date_updated: 2026-05-06T08:01:28Z
day: '30'
ddc:
- '579'
degree_awarded: PhD
department:
- _id: GradSch
- _id: CaGu
doi: 10.15479/AT-ISTA-20470
file:
- access_level: closed
  checksum: d32ea83f259f6b0506325cd57b1d44c3
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  creator: brwu
  date_created: 2025-10-21T17:33:27Z
  date_updated: 2026-04-30T22:30:02Z
  embargo_to: open_access
  file_id: '20516'
  file_name: 2025_Wu_Bryan_Thesis.docx
  file_size: 10603235
  relation: source_file
- access_level: open_access
  checksum: 53590046fd3244c5550b4022282449d2
  content_type: application/pdf
  creator: brwu
  date_created: 2025-10-21T17:33:26Z
  date_updated: 2026-04-30T22:30:02Z
  embargo: 2026-04-30
  file_id: '20517'
  file_name: 2025_Wu_Bryan_Thesis.pdf
  file_size: 6251936
  relation: main_file
file_date_updated: 2026-04-30T22:30:02Z
has_accepted_license: '1'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: '102'
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
status: public
supervisor:
- first_name: Calin C
  full_name: Guet, Calin C
  id: 47F8433E-F248-11E8-B48F-1D18A9856A87
  last_name: Guet
  orcid: 0000-0001-6220-2052
title: An examination on phages as a naturally composable system
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2025'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '19735'
abstract:
- lang: eng
  text: The males and females of the brine shrimp Artemia franciscana are highly dimorphic,
    and this dimorphism is associated with substantial sex-biased gene expression
    in heads and gonads. How these sex-specific patterns of expression are regulated
    at the molecular level is unknown. A. franciscana also has differentiated ZW sex
    chromosomes, with complete dosage compensation, but the molecular mechanism through
    which compensation is achieved is unknown. Here, we conducted CUT&TAG assays targeting
    7 post-translational histone modifications (H3K27me3, H3K9me2, H3K9me3, H3K36me3,
    H3K27ac, H3K4me3, and H4K16ac) in heads and gonads of A. franciscana, allowing
    us to divide the genome into 12 chromatin states. We further defined functional
    chromatin signatures for all genes, which were correlated with transcript level
    abundances. Differences in the occupancy of the profiled epigenetic marks between
    sexes were associated with differential gene expression between males and females.
    Finally, we found a significant enrichment of the permissive H4K16ac histone mark
    in the Z-specific region in both tissues of females but not males, supporting
    the role of this histone mark in mediating dosage compensation of the Z chromosome.
acknowledged_ssus:
- _id: ScienComp
acknowledgement: We thank the Vicoso lab for their help in maintaining Artemia and
  for their valuable feedback and suggestions. We thank Marwan Elkrewi for his useful
  technical advice and discussions. We are also grateful to the Scientific Unit at
  ISTA Austria for computational resources and assistance. This work was supported
  by Austrian science fund (FWF) grants PAT8748323 and SFB F88-10 (as part of the
  SFB Meiosis consortium https://sfbmeiosis.org) to BV and Swedish Research Council
  (Vetenskapsrådet, grant number 2020-06424) to MSTA.
article_number: msaf085
article_processing_charge: Yes
article_type: original
author:
- first_name: Vincent K
  full_name: Bett, Vincent K
  id: 57854184-AAE0-11E9-8D04-98D6E5697425
  last_name: Bett
- first_name: Minerva S
  full_name: Trejo Arellano, Minerva S
  id: 2b681148-eed5-11eb-b81b-ae229e8620f8
  last_name: Trejo Arellano
  orcid: 0000-0002-1982-3475
- first_name: Beatriz
  full_name: Vicoso, Beatriz
  id: 49E1C5C6-F248-11E8-B48F-1D18A9856A87
  last_name: Vicoso
  orcid: 0000-0002-4579-8306
citation:
  ama: Bett VK, Trejo Arellano MS, Vicoso B. Chromatin landscape is associated with
    sex-biased expression and Drosophila-like dosage compensation of the Z chromosome
    in Artemia franciscana. <i>Molecular Biology and Evolution</i>. 2025;42(5). doi:<a
    href="https://doi.org/10.1093/molbev/msaf085">10.1093/molbev/msaf085</a>
  apa: Bett, V. K., Trejo Arellano, M. S., &#38; Vicoso, B. (2025). Chromatin landscape
    is associated with sex-biased expression and Drosophila-like dosage compensation
    of the Z chromosome in Artemia franciscana. <i>Molecular Biology and Evolution</i>.
    Oxford University Press. <a href="https://doi.org/10.1093/molbev/msaf085">https://doi.org/10.1093/molbev/msaf085</a>
  chicago: Bett, Vincent K, Minerva S Trejo Arellano, and Beatriz Vicoso. “Chromatin
    Landscape Is Associated with Sex-Biased Expression and Drosophila-like Dosage
    Compensation of the Z Chromosome in Artemia Franciscana.” <i>Molecular Biology
    and Evolution</i>. Oxford University Press, 2025. <a href="https://doi.org/10.1093/molbev/msaf085">https://doi.org/10.1093/molbev/msaf085</a>.
  ieee: V. K. Bett, M. S. Trejo Arellano, and B. Vicoso, “Chromatin landscape is associated
    with sex-biased expression and Drosophila-like dosage compensation of the Z chromosome
    in Artemia franciscana,” <i>Molecular Biology and Evolution</i>, vol. 42, no.
    5. Oxford University Press, 2025.
  ista: Bett VK, Trejo Arellano MS, Vicoso B. 2025. Chromatin landscape is associated
    with sex-biased expression and Drosophila-like dosage compensation of the Z chromosome
    in Artemia franciscana. Molecular Biology and Evolution. 42(5), msaf085.
  mla: Bett, Vincent K., et al. “Chromatin Landscape Is Associated with Sex-Biased
    Expression and Drosophila-like Dosage Compensation of the Z Chromosome in Artemia
    Franciscana.” <i>Molecular Biology and Evolution</i>, vol. 42, no. 5, msaf085,
    Oxford University Press, 2025, doi:<a href="https://doi.org/10.1093/molbev/msaf085">10.1093/molbev/msaf085</a>.
  short: V.K. Bett, M.S. Trejo Arellano, B. Vicoso, Molecular Biology and Evolution
    42 (2025).
corr_author: '1'
date_created: 2025-05-25T22:16:56Z
date_published: 2025-05-01T00:00:00Z
date_updated: 2026-08-11T22:30:43Z
day: '01'
ddc:
- '570'
department:
- _id: BeVi
- _id: DaZi
doi: 10.1093/molbev/msaf085
external_id:
  isi:
  - '001483460200001'
  pmid:
  - '40202086'
file:
- access_level: open_access
  checksum: 6c14b03f94b4aadf8869be2c4366d077
  content_type: application/pdf
  creator: dernst
  date_created: 2025-05-28T09:34:36Z
  date_updated: 2025-05-28T09:34:36Z
  file_id: '19756'
  file_name: 2025_MBE_Bett.pdf
  file_size: 1282772
  relation: main_file
  success: 1
file_date_updated: 2025-05-28T09:34:36Z
has_accepted_license: '1'
intvolume: '        42'
isi: 1
issue: '5'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 8ed82125-16d5-11f0-9cad-fbcae312235b
  grant_number: PAT 8748323
  name: Sex chromosomes in evolution and development
- _id: 34ae1506-11ca-11ed-8bc3-c14f4c474396
  grant_number: F8810
  name: The highjacking of meiosis for asexual reproduction
publication: Molecular Biology and Evolution
publication_identifier:
  eissn:
  - 1537-1719
  issn:
  - 0737-4038
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
related_material:
  link:
  - relation: software
    url: https://github.com/vkb25/Chromatin-landscape-in-Artemia-franciscana.git
  record:
  - id: '20449'
    relation: dissertation_contains
    status: public
  - id: '20444'
    relation: dissertation_contains
    status: deleted
scopus_import: '1'
status: public
title: Chromatin landscape is associated with sex-biased expression and Drosophila-like
  dosage compensation of the Z chromosome in Artemia franciscana
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 42
year: '2025'
...
