---
OA_place: publisher
_id: '7258'
abstract:
- lang: eng
text: Many flows encountered in nature and applications are characterized by a chaotic
motion known as turbulence. Turbulent flows generate intense friction with pipe
walls and are responsible for considerable amounts of energy losses at world scale.
The nature of turbulent friction and techniques aimed at reducing it have been
subject of extensive research over the last century, but no definite answer has
been found yet. In this thesis we show that in pipes at moderate turbulent Reynolds
numbers friction is better described by the power law first introduced by Blasius
and not by the Prandtl–von Kármán formula. At higher Reynolds numbers, large scale
motions gradually become more important in the flow and can be related to the
change in scaling of friction. Next, we present a series of new techniques that
can relaminarize turbulence by suppressing a key mechanism that regenerates it
at walls, the lift–up effect. In addition, we investigate the process of turbulence
decay in several experiments and discuss the drag reduction potential. Finally,
we examine the behavior of friction under pulsating conditions inspired by the
human heart cycle and we show that under such circumstances turbulent friction
can be reduced to produce energy savings.
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Davide
full_name: Scarselli, Davide
id: 40315C30-F248-11E8-B48F-1D18A9856A87
last_name: Scarselli
orcid: 0000-0001-5227-4271
citation:
ama: Scarselli D. New approaches to reduce friction in turbulent pipe flow. 2020.
doi:10.15479/AT:ISTA:7258
apa: Scarselli, D. (2020). New approaches to reduce friction in turbulent pipe
flow. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:7258
chicago: Scarselli, Davide. “New Approaches to Reduce Friction in Turbulent Pipe
Flow.” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:7258.
ieee: D. Scarselli, “New approaches to reduce friction in turbulent pipe flow,”
Institute of Science and Technology Austria, 2020.
ista: Scarselli D. 2020. New approaches to reduce friction in turbulent pipe flow.
Institute of Science and Technology Austria.
mla: Scarselli, Davide. New Approaches to Reduce Friction in Turbulent Pipe Flow.
Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:7258.
short: D. Scarselli, New Approaches to Reduce Friction in Turbulent Pipe Flow, Institute
of Science and Technology Austria, 2020.
corr_author: '1'
date_created: 2020-01-12T16:07:26Z
date_published: 2020-01-13T00:00:00Z
date_updated: 2026-04-08T07:28:22Z
day: '13'
ddc:
- '532'
degree_awarded: PhD
department:
- _id: BjHo
doi: 10.15479/AT:ISTA:7258
ec_funded: 1
file:
- access_level: closed
checksum: 4df1ab24e9896635106adde5a54615bf
content_type: application/zip
creator: dscarsel
date_created: 2020-01-12T15:57:14Z
date_updated: 2021-01-13T23:30:05Z
embargo_to: open_access
file_id: '7259'
file_name: 2020_Scarselli_Thesis.zip
file_size: 26640830
relation: source_file
- access_level: open_access
checksum: 48659ab98e3414293c7a721385c2fd1c
content_type: application/pdf
creator: dscarsel
date_created: 2020-01-12T15:56:14Z
date_updated: 2021-01-13T23:30:05Z
embargo: 2021-01-12
file_id: '7260'
file_name: 2020_Scarselli_Thesis.pdf
file_size: 8515844
relation: main_file
file_date_updated: 2021-01-13T23:30:05Z
fulldoi: https://doi.org/10.15479/AT:ISTA:7258
has_accepted_license: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: None
page: '174'
project:
- _id: 25152F3A-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '306589'
name: Decoding the complexity of turbulence at its origin
- _id: 25104D44-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '737549'
name: Eliminating turbulence in oil pipelines
- _id: 25136C54-B435-11E9-9278-68D0E5697425
grant_number: HO 4393/1-2
name: Experimental studies of the turbulence transition and transport processes
in turbulent Taylor-Couette currents
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '422'
relation: part_of_dissertation
status: public
- id: '461'
relation: part_of_dissertation
status: public
- id: '6228'
relation: part_of_dissertation
status: public
- id: '6486'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Björn
full_name: Hof, Björn
id: 3A374330-F248-11E8-B48F-1D18A9856A87
last_name: Hof
orcid: 0000-0003-2057-2754
title: New approaches to reduce friction in turbulent pipe flow
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2020'
...
---
_id: '9750'
abstract:
- lang: eng
text: Tension of the actomyosin cell cortex plays a key role in determining cell-cell
contact growth and size. The level of cortical tension outside of the cell-cell
contact, when pulling at the contact edge, scales with the total size to which
a cell-cell contact can grow1,2. Here we show in zebrafish primary germ layer
progenitor cells that this monotonic relationship only applies to a narrow range
of cortical tension increase, and that above a critical threshold, contact size
inversely scales with cortical tension. This switch from cortical tension increasing
to decreasing progenitor cell-cell contact size is caused by cortical tension
promoting E-cadherin anchoring to the actomyosin cytoskeleton, thereby increasing
clustering and stability of E-cadherin at the contact. Once tension-mediated E-cadherin
stabilization at the contact exceeds a critical threshold level, the rate by which
the contact expands in response to pulling forces from the cortex sharply drops,
leading to smaller contacts at physiologically relevant timescales of contact
formation. Thus, the activity of cortical tension in expanding cell-cell contact
size is limited by tension stabilizing E-cadherin-actin complexes at the contact.
acknowledged_ssus:
- _id: Bio
- _id: EM-Fac
- _id: SSU
acknowledgement: We would like to thank Edouard Hannezo for discussions, Shayan Shami
Pour and Daniel Capek for help with data analysis, Vanessa Barone and other members
of the Heisenberg laboratory for thoughtful discussions and comments on the manuscript.
We also thank Jack Merrin for preparing the microwells, and the Scientific Service
Units at IST Austria, specifically Bioimaging and Electron Microscopy, and the Zebrafish
Facility for continuous support. We acknowledge Hitoshi Morita for the kind gift
of VinculinB-GFP plasmid. This research was supported by an ERC Advanced Grant (MECSPEC)
to C.-P.H, EMBO Long Term grant (ALTF 187-2013) to M.S and IST Fellow Marie-Curie
COFUND No. P_IST_EU01 to J.S.
article_processing_charge: No
author:
- first_name: Jana
full_name: Slovakova, Jana
id: 30F3F2F0-F248-11E8-B48F-1D18A9856A87
last_name: Slovakova
- first_name: Mateusz K
full_name: Sikora, Mateusz K
id: 2F74BCDE-F248-11E8-B48F-1D18A9856A87
last_name: Sikora
- first_name: Silvia
full_name: Caballero Mancebo, Silvia
id: 2F1E1758-F248-11E8-B48F-1D18A9856A87
last_name: Caballero Mancebo
orcid: 0000-0002-5223-3346
- first_name: Gabriel
full_name: Krens, Gabriel
id: 2B819732-F248-11E8-B48F-1D18A9856A87
last_name: Krens
orcid: 0000-0003-4761-5996
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: Karla
full_name: Huljev, Karla
id: 44C6F6A6-F248-11E8-B48F-1D18A9856A87
last_name: Huljev
- first_name: Carl-Philipp J
full_name: Heisenberg, Carl-Philipp J
id: 39427864-F248-11E8-B48F-1D18A9856A87
last_name: Heisenberg
orcid: 0000-0002-0912-4566
citation:
ama: Slovakova J, Sikora MK, Caballero Mancebo S, et al. Tension-dependent stabilization
of E-cadherin limits cell-cell contact expansion. bioRxiv. 2020. doi:10.1101/2020.11.20.391284
apa: Slovakova, J., Sikora, M. K., Caballero Mancebo, S., Krens, G., Kaufmann, W.,
Huljev, K., & Heisenberg, C.-P. J. (2020). Tension-dependent stabilization
of E-cadherin limits cell-cell contact expansion. bioRxiv. https://doi.org/10.1101/2020.11.20.391284
chicago: Slovakova, Jana, Mateusz K Sikora, Silvia Caballero Mancebo, Gabriel Krens,
Walter Kaufmann, Karla Huljev, and Carl-Philipp J Heisenberg. “Tension-Dependent
Stabilization of E-Cadherin Limits Cell-Cell Contact Expansion.” BioRxiv,
2020. https://doi.org/10.1101/2020.11.20.391284.
ieee: J. Slovakova et al., “Tension-dependent stabilization of E-cadherin
limits cell-cell contact expansion,” bioRxiv. 2020.
ista: Slovakova J, Sikora MK, Caballero Mancebo S, Krens G, Kaufmann W, Huljev K,
Heisenberg C-PJ. 2020. Tension-dependent stabilization of E-cadherin limits cell-cell
contact expansion. bioRxiv, 10.1101/2020.11.20.391284.
mla: Slovakova, Jana, et al. “Tension-Dependent Stabilization of E-Cadherin Limits
Cell-Cell Contact Expansion.” BioRxiv, 2020, doi:10.1101/2020.11.20.391284.
short: J. Slovakova, M.K. Sikora, S. Caballero Mancebo, G. Krens, W. Kaufmann, K.
Huljev, C.-P.J. Heisenberg, BioRxiv (2020).
date_created: 2021-07-29T11:29:50Z
date_published: 2020-11-20T00:00:00Z
date_updated: 2026-10-18T22:30:29Z
day: '20'
department:
- _id: CaHe
- _id: EM-Fac
- _id: Bio
doi: 10.1101/2020.11.20.391284
ec_funded: 1
fulldoi: https://doi.org/10.1101/2020.11.20.391284
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1101/2020.11.20.391284
month: '11'
oa: 1
oa_version: Preprint
page: '41'
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
- _id: 260F1432-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '742573'
name: Interaction and feedback between cell mechanics and fate specification in
vertebrate gastrulation
- _id: 2521E28E-B435-11E9-9278-68D0E5697425
grant_number: 187-2013
name: Modulation of adhesion function in cell-cell contact formation by cortical
tension
publication: bioRxiv
publication_status: published
related_material:
record:
- id: '10766'
relation: later_version
status: public
- id: '9623'
relation: dissertation_contains
status: public
status: public
title: Tension-dependent stabilization of E-cadherin limits cell-cell contact expansion
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2020'
...
---
_id: '8529'
abstract:
- lang: eng
text: Practical quantum networks require low-loss and noise-resilient optical interconnects
as well as non-Gaussian resources for entanglement distillation and distributed
quantum computation. The latter could be provided by superconducting circuits
but existing solutions to interface the microwave and optical domains lack either
scalability or efficiency, and in most cases the conversion noise is not known.
In this work we utilize the unique opportunities of silicon photonics, cavity
optomechanics and superconducting circuits to demonstrate a fully integrated,
coherent transducer interfacing the microwave X and the telecom S bands with a
total (internal) bidirectional transduction efficiency of 1.2% (135%) at millikelvin
temperatures. The coupling relies solely on the radiation pressure interaction
mediated by the femtometer-scale motion of two silicon nanobeams reaching a Vπ
as low as 16 μV for sub-nanowatt pump powers. Without the associated optomechanical
gain, we achieve a total (internal) pure conversion efficiency of up to 0.019%
(1.6%), relevant for future noise-free operation on this qubit-compatible platform.
acknowledged_ssus:
- _id: NanoFab
acknowledgement: We thank Yuan Chen for performing supplementary FEM simulations and
Andrew Higginbotham, Ralf Riedinger, Sungkun Hong, and Lorenzo Magrini for valuable
discussions. This work was supported by IST Austria, the IST nanofabrication facility
(NFF), the European Union’s Horizon 2020 research and innovation program under grant
agreement no. 732894 (FET Proactive HOT) and the European Research Council under
grant agreement no. 758053 (ERC StG QUNNECT). G.A. is the recipient of a DOC fellowship
of the Austrian Academy of Sciences at IST Austria. W.H. is the recipient of an
ISTplus postdoctoral fellowship with funding from the European Union’s Horizon 2020
research and innovation program under the Marie Sklodowska-Curie grant agreement
no. 754411. J.M.F. acknowledges support from the Austrian Science Fund (FWF) through
BeyondC (F71), a NOMIS foundation research grant, and the EU’s Horizon 2020 research
and innovation program under grant agreement no. 862644 (FET Open QUARTET).
article_number: '4460'
article_processing_charge: No
article_type: original
author:
- first_name: Georg M
full_name: Arnold, Georg M
id: 3770C838-F248-11E8-B48F-1D18A9856A87
last_name: Arnold
orcid: 0000-0003-1397-7876
- first_name: Matthias
full_name: Wulf, Matthias
id: 45598606-F248-11E8-B48F-1D18A9856A87
last_name: Wulf
orcid: 0000-0001-6613-1378
- first_name: Shabir
full_name: Barzanjeh, Shabir
id: 2D25E1F6-F248-11E8-B48F-1D18A9856A87
last_name: Barzanjeh
orcid: 0000-0003-0415-1423
- first_name: Elena
full_name: Redchenko, Elena
id: 2C21D6E8-F248-11E8-B48F-1D18A9856A87
last_name: Redchenko
- first_name: Alfredo R
full_name: Rueda Sanchez, Alfredo R
id: 3B82B0F8-F248-11E8-B48F-1D18A9856A87
last_name: Rueda Sanchez
orcid: 0000-0001-6249-5860
- first_name: William J
full_name: Hease, William J
id: 29705398-F248-11E8-B48F-1D18A9856A87
last_name: Hease
orcid: 0000-0001-9868-2166
- first_name: Farid
full_name: Hassani, Farid
id: 2AED110C-F248-11E8-B48F-1D18A9856A87
last_name: Hassani
orcid: 0000-0001-6937-5773
- 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: Arnold GM, Wulf M, Barzanjeh S, et al. Converting microwave and telecom photons
with a silicon photonic nanomechanical interface. Nature Communications.
2020;11. doi:10.1038/s41467-020-18269-z
apa: Arnold, G. M., Wulf, M., Barzanjeh, S., Redchenko, E., Rueda Sanchez, A. R.,
Hease, W. J., … Fink, J. M. (2020). Converting microwave and telecom photons with
a silicon photonic nanomechanical interface. Nature Communications. Springer
Nature. https://doi.org/10.1038/s41467-020-18269-z
chicago: Arnold, Georg M, Matthias Wulf, Shabir Barzanjeh, Elena Redchenko, Alfredo
R Rueda Sanchez, William J Hease, Farid Hassani, and Johannes M Fink. “Converting
Microwave and Telecom Photons with a Silicon Photonic Nanomechanical Interface.”
Nature Communications. Springer Nature, 2020. https://doi.org/10.1038/s41467-020-18269-z.
ieee: G. M. Arnold et al., “Converting microwave and telecom photons with
a silicon photonic nanomechanical interface,” Nature Communications, vol.
11. Springer Nature, 2020.
ista: Arnold GM, Wulf M, Barzanjeh S, Redchenko E, Rueda Sanchez AR, Hease WJ, Hassani
F, Fink JM. 2020. Converting microwave and telecom photons with a silicon photonic
nanomechanical interface. Nature Communications. 11, 4460.
mla: Arnold, Georg M., et al. “Converting Microwave and Telecom Photons with a Silicon
Photonic Nanomechanical Interface.” Nature Communications, vol. 11, 4460,
Springer Nature, 2020, doi:10.1038/s41467-020-18269-z.
short: G.M. Arnold, M. Wulf, S. Barzanjeh, E. Redchenko, A.R. Rueda Sanchez, W.J.
Hease, F. Hassani, J.M. Fink, Nature Communications 11 (2020).
corr_author: '1'
date_created: 2020-09-18T10:56:20Z
date_published: 2020-09-08T00:00:00Z
date_updated: 2026-10-18T22:30:30Z
day: '08'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.1038/s41467-020-18269-z
ec_funded: 1
external_id:
isi:
- '000577280200001'
pmid:
- '32901014'
file:
- access_level: open_access
checksum: 88f92544889eb18bb38e25629a422a86
content_type: application/pdf
creator: dernst
date_created: 2020-09-18T13:02:37Z
date_updated: 2020-09-18T13:02:37Z
file_id: '8530'
file_name: 2020_NatureComm_Arnold.pdf
file_size: 1002818
relation: main_file
success: 1
file_date_updated: 2020-09-18T13:02:37Z
fulldoi: https://doi.org/10.1038/s41467-020-18269-z
has_accepted_license: '1'
intvolume: ' 11'
isi: 1
keyword:
- General Biochemistry
- Genetics and Molecular Biology
- General Physics and Astronomy
- General Chemistry
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '09'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 257EB838-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '732894'
name: Hybrid Optomechanical Technologies
- _id: 26336814-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '758053'
name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _id: 237CBA6C-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '862644'
name: Quantum readout techniques and technologies
- _id: 2671EB66-B435-11E9-9278-68D0E5697425
name: Coherent on-chip conversion of superconducting qubit signals from microwaves
to optical frequencies
publication: Nature Communications
publication_identifier:
issn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- relation: erratum
url: https://doi.org/10.1038/s41467-020-18912-9
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/how-to-transport-microwave-quantum-information-via-optical-fiber/
record:
- id: '13056'
relation: research_data
status: public
- id: '18871'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Converting microwave and telecom photons with a silicon photonic nanomechanical
interface
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: 11
year: '2020'
...
---
_id: '9114'
abstract:
- lang: eng
text: "Microwave photonics lends the advantages of fiber optics to electronic sensing
and communication systems. In contrast to nonlinear optics, electro-optic devices
so far require classical modulation fields whose variance is dominated by electronic
or thermal noise rather than quantum fluctuations. Here we demonstrate bidirectional
single-sideband conversion of X band microwave to C band telecom light with a
microwave mode occupancy as low as 0.025 ± 0.005 and an added output noise of
less than or equal to 0.074 photons. This is facilitated by radiative cooling
and a triply resonant ultra-low-loss transducer operating at millikelvin temperatures.
The high bandwidth of 10.7 MHz and total (internal) photon conversion\r\nefficiency
of 0.03% (0.67%) combined with the extremely slow heating rate of 1.1 added output
noise photons per second for the highest available pump power of 1.48 mW puts
near-unity efficiency pulsed quantum transduction within reach. Together with
the non-Gaussian resources of superconducting qubits this might provide the practical
foundation to extend the range and scope of current quantum networks in analogy
to electrical repeaters in classical fiber optic communication."
acknowledged_ssus:
- _id: M-Shop
acknowledgement: "The authors acknowledge the support of T. Menner, A. Arslani, and
T. Asenov from the Miba machine shop for machining the microwave cavity, and thank
S. Barzanjeh, F. Sedlmeir, and C. Marquardt for fruitful discussions. This work
is supported by IST Austria and the European Research Council under Grant No. 758053
(ERC StG QUNNECT). W.H. is the recipient of an ISTplus postdoctoral fellowship with
funding from the European Union’s Horizon 2020 research and innovation program under
the Marie Skłodowska-Curie Grant No. 754411.\r\nG.A. is the recipient of a DOC fellowship
of the Austrian Academy of Sciences at IST Austria. J.M.F. acknowledges support
from the Austrian Science Fund (FWF) through BeyondC (F71) and the European Union’s
Horizon 2020 research and innovation program under Grant No. 899354 (FET Open SuperQuLAN).
H.G.L.S. acknowledges support from the Aotearoa/New Zealand’s MBIE Endeavour Smart
Ideas Grant No UOOX1805."
article_number: '020315'
article_processing_charge: No
article_type: original
author:
- first_name: William J
full_name: Hease, William J
id: 29705398-F248-11E8-B48F-1D18A9856A87
last_name: Hease
orcid: 0000-0001-9868-2166
- first_name: Alfredo R
full_name: Rueda Sanchez, Alfredo R
id: 3B82B0F8-F248-11E8-B48F-1D18A9856A87
last_name: Rueda Sanchez
orcid: 0000-0001-6249-5860
- first_name: Rishabh
full_name: Sahu, Rishabh
id: 47D26E34-F248-11E8-B48F-1D18A9856A87
last_name: Sahu
orcid: 0000-0001-6264-2162
- first_name: Matthias
full_name: Wulf, Matthias
id: 45598606-F248-11E8-B48F-1D18A9856A87
last_name: Wulf
orcid: 0000-0001-6613-1378
- first_name: Georg M
full_name: Arnold, Georg M
id: 3770C838-F248-11E8-B48F-1D18A9856A87
last_name: Arnold
orcid: 0000-0003-1397-7876
- first_name: Harald G.L.
full_name: Schwefel, Harald G.L.
last_name: Schwefel
- 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: Hease WJ, Rueda Sanchez AR, Sahu R, et al. Bidirectional electro-optic wavelength
conversion in the quantum ground state. PRX Quantum. 2020;1(2). doi:10.1103/prxquantum.1.020315
apa: Hease, W. J., Rueda Sanchez, A. R., Sahu, R., Wulf, M., Arnold, G. M., Schwefel,
H. G. L., & Fink, J. M. (2020). Bidirectional electro-optic wavelength conversion
in the quantum ground state. PRX Quantum. American Physical Society. https://doi.org/10.1103/prxquantum.1.020315
chicago: Hease, William J, Alfredo R Rueda Sanchez, Rishabh Sahu, Matthias Wulf,
Georg M Arnold, Harald G.L. Schwefel, and Johannes M Fink. “Bidirectional Electro-Optic
Wavelength Conversion in the Quantum Ground State.” PRX Quantum. American
Physical Society, 2020. https://doi.org/10.1103/prxquantum.1.020315.
ieee: W. J. Hease et al., “Bidirectional electro-optic wavelength conversion
in the quantum ground state,” PRX Quantum, vol. 1, no. 2. American Physical
Society, 2020.
ista: Hease WJ, Rueda Sanchez AR, Sahu R, Wulf M, Arnold GM, Schwefel HGL, Fink
JM. 2020. Bidirectional electro-optic wavelength conversion in the quantum ground
state. PRX Quantum. 1(2), 020315.
mla: Hease, William J., et al. “Bidirectional Electro-Optic Wavelength Conversion
in the Quantum Ground State.” PRX Quantum, vol. 1, no. 2, 020315, American
Physical Society, 2020, doi:10.1103/prxquantum.1.020315.
short: W.J. Hease, A.R. Rueda Sanchez, R. Sahu, M. Wulf, G.M. Arnold, H.G.L. Schwefel,
J.M. Fink, PRX Quantum 1 (2020).
corr_author: '1'
date_created: 2021-02-12T10:41:28Z
date_published: 2020-11-23T00:00:00Z
date_updated: 2026-10-18T22:30:31Z
day: '23'
ddc:
- '530'
department:
- _id: JoFi
doi: 10.1103/prxquantum.1.020315
ec_funded: 1
external_id:
isi:
- '000674680100001'
file:
- access_level: open_access
checksum: b70b12ded6d7660d4c9037eb09bfed0c
content_type: application/pdf
creator: dernst
date_created: 2021-02-12T11:16:16Z
date_updated: 2021-02-12T11:16:16Z
file_id: '9115'
file_name: 2020_PRXQuantum_Hease.pdf
file_size: 2146924
relation: main_file
success: 1
file_date_updated: 2021-02-12T11:16:16Z
fulldoi: https://doi.org/10.1103/prxquantum.1.020315
has_accepted_license: '1'
intvolume: ' 1'
isi: 1
issue: '2'
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
project:
- _id: 26336814-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '758053'
name: A Fiber Optic Transceiver for Superconducting Qubits
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _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: PRX Quantum
publication_identifier:
issn:
- 2691-3399
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
link:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/how-to-transport-microwave-quantum-information-via-optical-fiber/
record:
- id: '13071'
relation: research_data
status: public
- id: '13175'
relation: dissertation_contains
status: public
- id: '12900'
relation: dissertation_contains
status: public
- id: '18871'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Bidirectional electro-optic wavelength conversion in the quantum ground state
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: 1
year: '2020'
...
---
_id: '8831'
abstract:
- lang: eng
text: Holes in planar Ge have high mobilities, strong spin-orbit interaction and
electrically tunable g-factors, and are therefore emerging as a promising candidate
for hybrid superconductorsemiconductor devices. This is further motivated by the
observation of supercurrent transport in planar Ge Josephson Field effect transistors
(JoFETs). A key challenge towards hybrid germanium quantum technology is the design
of high quality interfaces and superconducting contacts that are robust against
magnetic fields. By combining the assets of Al, which has a long superconducting
coherence, and Nb, which has a significant superconducting gap, we form low-disordered
JoFETs with large ICRN products that are capable of withstanding high magnetic
fields. We furthermore demonstrate the ability of phase-biasing individual JoFETs
opening up an avenue to explore topological superconductivity in planar Ge. The
persistence of superconductivity in the reported hybrid devices beyond 1.8 T paves
the way towards integrating spin qubits and proximity-induced superconductivity
on the same chip.
acknowledged_ssus:
- _id: M-Shop
- _id: NanoFab
acknowledgement: "This research and related results were made possible with the support
of the NOMIS Foundation. This research was supported by the Scientific Service Units
of IST Austria through resources provided by the MIBA Machine Shop and the nanofabrication
facility, the European Union’s Horizon 2020 research and innovation program under
the Marie Sklodowska-Curie grant agreement #844511 and the Grant Agreement #862046.
ICN2 acknowledge funding from Generalitat de Catalunya 2017 SGR 327. ICN2 is supported
by the Severo Ochoa\r\nprogram from Spanish MINECO (Grant No. SEV2017-0706) and
is funded by the CERCA Programme / Generalitat de Catalunya. Part of the present
work has been performed in the framework of Universitat Aut`onoma de Barcelona Materials
Science PhD program. The HAADF-STEM microscopy was conducted in the Laboratorio
de Microscopias Avanzadas at Instituto de Nanociencia de Aragon-Universidad de Zaragoza.
Authors acknowledge the LMA-INA for offering access to their instruments and expertise.
We acknowledge support from CSIC Research Platform on Quantum Technologies PTI-001.
This project has received funding from\r\nthe European Union’s Horizon 2020 research
and innovation programme under grant agreement No 823717 – ESTEEM3. M.B. acknowledges
support from SUR Generalitat de Catalunya and the EU Social Fund; project ref. 2020
FI 00103. GS and MV acknowledge support through a projectruimte grant associated
with the Netherlands Organization of Scientific Research (NWO)."
article_number: '2012.00322'
article_processing_charge: No
arxiv: 1
author:
- first_name: Kushagra
full_name: Aggarwal, Kushagra
id: b22ab905-3539-11eb-84c3-fc159dcd79cb
last_name: Aggarwal
orcid: 0000-0001-9985-9293
- first_name: Andrea C
full_name: Hofmann, Andrea C
id: 340F461A-F248-11E8-B48F-1D18A9856A87
last_name: Hofmann
- first_name: Daniel
full_name: Jirovec, Daniel
id: 4C473F58-F248-11E8-B48F-1D18A9856A87
last_name: Jirovec
orcid: 0000-0002-7197-4801
- first_name: Ivan
full_name: Prieto Gonzalez, Ivan
id: 2A307FE2-F248-11E8-B48F-1D18A9856A87
last_name: Prieto Gonzalez
orcid: 0000-0002-7370-5357
- first_name: Amir
full_name: Sammak, Amir
last_name: Sammak
- first_name: Marc
full_name: Botifoll, Marc
last_name: Botifoll
- first_name: Sara
full_name: Marti-Sanchez, Sara
last_name: Marti-Sanchez
- first_name: Menno
full_name: Veldhorst, Menno
last_name: Veldhorst
- first_name: Jordi
full_name: Arbiol, Jordi
last_name: Arbiol
- first_name: Giordano
full_name: Scappucci, Giordano
last_name: Scappucci
- first_name: Georgios
full_name: Katsaros, Georgios
id: 38DB5788-F248-11E8-B48F-1D18A9856A87
last_name: Katsaros
orcid: 0000-0001-8342-202X
citation:
ama: Aggarwal K, Hofmann AC, Jirovec D, et al. Enhancement of proximity induced
superconductivity in planar Germanium. arXiv. doi:10.48550/arXiv.2012.00322
apa: Aggarwal, K., Hofmann, A. C., Jirovec, D., Prieto Gonzalez, I., Sammak, A.,
Botifoll, M., … Katsaros, G. (n.d.). Enhancement of proximity induced superconductivity
in planar Germanium. arXiv. https://doi.org/10.48550/arXiv.2012.00322
chicago: Aggarwal, Kushagra, Andrea C Hofmann, Daniel Jirovec, Ivan Prieto Gonzalez,
Amir Sammak, Marc Botifoll, Sara Marti-Sanchez, et al. “Enhancement of Proximity
Induced Superconductivity in Planar Germanium.” ArXiv, n.d. https://doi.org/10.48550/arXiv.2012.00322.
ieee: K. Aggarwal et al., “Enhancement of proximity induced superconductivity
in planar Germanium,” arXiv. .
ista: Aggarwal K, Hofmann AC, Jirovec D, Prieto Gonzalez I, Sammak A, Botifoll M,
Marti-Sanchez S, Veldhorst M, Arbiol J, Scappucci G, Katsaros G. Enhancement of
proximity induced superconductivity in planar Germanium. arXiv, 2012.00322.
mla: Aggarwal, Kushagra, et al. “Enhancement of Proximity Induced Superconductivity
in Planar Germanium.” ArXiv, 2012.00322, doi:10.48550/arXiv.2012.00322.
short: K. Aggarwal, A.C. Hofmann, D. Jirovec, I. Prieto Gonzalez, A. Sammak, M.
Botifoll, S. Marti-Sanchez, M. Veldhorst, J. Arbiol, G. Scappucci, G. Katsaros,
ArXiv (n.d.).
corr_author: '1'
date_created: 2020-12-02T10:42:53Z
date_published: 2020-12-02T00:00:00Z
date_updated: 2026-10-18T22:30:38Z
day: '02'
ddc:
- '530'
department:
- _id: GeKa
doi: 10.48550/arXiv.2012.00322
ec_funded: 1
external_id:
arxiv:
- '2012.00322'
file:
- access_level: open_access
checksum: 22a612e206232fa94b138b2c2f957582
content_type: application/pdf
creator: gkatsaro
date_created: 2020-12-02T10:42:31Z
date_updated: 2020-12-02T10:42:31Z
file_id: '8832'
file_name: Superconducting_2D_Ge.pdf
file_size: 1697939
relation: main_file
file_date_updated: 2020-12-02T10:42:31Z
fulldoi: https://doi.org/10.48550/arXiv.2012.00322
has_accepted_license: '1'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Submitted Version
project:
- _id: 262116AA-B435-11E9-9278-68D0E5697425
name: Hybrid Semiconductor - Superconductor Quantum Devices
- _id: 26A151DA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '844511'
name: Majorana bound states in Ge/SiGe heterostructures
- _id: 237E5020-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '862046'
name: TOPOLOGICALLY PROTECTED AND SCALABLE QUANTUM BITS
publication: arXiv
publication_status: draft
related_material:
record:
- id: '10559'
relation: later_version
status: public
- id: '8834'
relation: research_data
status: public
- id: '10058'
relation: dissertation_contains
status: public
status: public
title: Enhancement of proximity induced superconductivity in planar Germanium
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2020'
...
---
_id: '8986'
abstract:
- lang: eng
text: 'Flowering plants display the highest diversity among plant species and have
notably shaped terrestrial landscapes. Nonetheless, the evolutionary origin of
their unprecedented morphological complexity remains largely an enigma. Here,
we show that the coevolution of cis-regulatory and coding regions of PIN-FORMED
(PIN) auxin transporters confined their expression to certain cell types and directed
their subcellular localization to particular cell sides, which together enabled
dynamic auxin gradients across tissues critical to the complex architecture of
flowering plants. Extensive intraspecies and interspecies genetic complementation
experiments with PINs from green alga up to flowering plant lineages showed that
PIN genes underwent three subsequent, critical evolutionary innovations and thus
acquired a triple function to regulate the development of three essential components
of the flowering plant Arabidopsis: shoot/root, inflorescence, and floral organ.
Our work highlights the critical role of functional innovations within the PIN
gene family as essential prerequisites for the origin of flowering plants.'
acknowledgement: 'We thank C.Löhne (Botanic Gardens, University of Bonn) for providing
us with A. trichopoda. We would like to thank T.Han, A.Mally (IST, Austria), and
C.Hartinger (University of Oxford) for constructive comment and careful reading.
Funding: The research leading to these results has received funding from the European
Union’s Horizon 2020 Research and Innovation Programme (ERC grant agreement number
742985), Austrian Science Fund (FWF, grant number I 3630-B25), DOC Fellowship of
the Austrian Academy of Sciences, and IST Fellow program. '
article_number: eabc8895
article_processing_charge: No
article_type: original
author:
- first_name: Yuzhou
full_name: Zhang, Yuzhou
id: 3B6137F2-F248-11E8-B48F-1D18A9856A87
last_name: Zhang
orcid: 0000-0003-2627-6956
- first_name: Lesia
full_name: Rodriguez Solovey, Lesia
id: 3922B506-F248-11E8-B48F-1D18A9856A87
last_name: Rodriguez Solovey
orcid: 0000-0002-7244-7237
- first_name: Lanxin
full_name: Li, Lanxin
id: 367EF8FA-F248-11E8-B48F-1D18A9856A87
last_name: Li
orcid: 0000-0002-5607-272X
- first_name: Xixi
full_name: Zhang, Xixi
id: 61A66458-47E9-11EA-85BA-8AEAAF14E49A
last_name: Zhang
orcid: 0000-0001-7048-4627
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: Zhang Y, Rodriguez Solovey L, Li L, Zhang X, Friml J. Functional innovations
of PIN auxin transporters mark crucial evolutionary transitions during rise of
flowering plants. Science Advances. 2020;6(50). doi:10.1126/sciadv.abc8895
apa: Zhang, Y., Rodriguez Solovey, L., Li, L., Zhang, X., & Friml, J. (2020).
Functional innovations of PIN auxin transporters mark crucial evolutionary transitions
during rise of flowering plants. Science Advances. AAAS. https://doi.org/10.1126/sciadv.abc8895
chicago: Zhang, Yuzhou, Lesia Rodriguez Solovey, Lanxin Li, Xixi Zhang, and Jiří
Friml. “Functional Innovations of PIN Auxin Transporters Mark Crucial Evolutionary
Transitions during Rise of Flowering Plants.” Science Advances. AAAS, 2020.
https://doi.org/10.1126/sciadv.abc8895.
ieee: Y. Zhang, L. Rodriguez Solovey, L. Li, X. Zhang, and J. Friml, “Functional
innovations of PIN auxin transporters mark crucial evolutionary transitions during
rise of flowering plants,” Science Advances, vol. 6, no. 50. AAAS, 2020.
ista: Zhang Y, Rodriguez Solovey L, Li L, Zhang X, Friml J. 2020. Functional innovations
of PIN auxin transporters mark crucial evolutionary transitions during rise of
flowering plants. Science Advances. 6(50), eabc8895.
mla: Zhang, Yuzhou, et al. “Functional Innovations of PIN Auxin Transporters Mark
Crucial Evolutionary Transitions during Rise of Flowering Plants.” Science
Advances, vol. 6, no. 50, eabc8895, AAAS, 2020, doi:10.1126/sciadv.abc8895.
short: Y. Zhang, L. Rodriguez Solovey, L. Li, X. Zhang, J. Friml, Science Advances
6 (2020).
corr_author: '1'
date_created: 2021-01-03T23:01:23Z
date_published: 2020-12-11T00:00:00Z
date_updated: 2026-10-18T22:30:40Z
day: '11'
ddc:
- '580'
department:
- _id: JiFr
doi: 10.1126/sciadv.abc8895
ec_funded: 1
external_id:
isi:
- '000599903600014'
pmid:
- '33310852'
file:
- access_level: open_access
checksum: 5ac2500b191c08ef6dab5327f40ff663
content_type: application/pdf
creator: dernst
date_created: 2021-01-07T12:44:33Z
date_updated: 2021-01-07T12:44:33Z
file_id: '8994'
file_name: 2020_ScienceAdvances_Zhang.pdf
file_size: 10578145
relation: main_file
success: 1
file_date_updated: 2021-01-07T12:44:33Z
fulldoi: https://doi.org/10.1126/sciadv.abc8895
has_accepted_license: '1'
intvolume: ' 6'
isi: 1
issue: '50'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc/4.0/
month: '12'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 261099A6-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '742985'
name: Tracing Evolution of Auxin Transport and Polarity in Plants
- _id: 26538374-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I03630
name: Molecular mechanisms of endocytic cargo recognition in plants
- _id: 26B4D67E-B435-11E9-9278-68D0E5697425
grant_number: '25351'
name: 'A Case Study of Plant Growth Regulation: Molecular Mechanism of Auxin-mediated
Rapid Growth Inhibition in Arabidopsis Root'
publication: Science Advances
publication_identifier:
eissn:
- 2375-2548
publication_status: published
publisher: AAAS
quality_controlled: '1'
related_material:
record:
- id: '10083'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Functional innovations of PIN auxin transporters mark crucial evolutionary
transitions during rise of flowering plants
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: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 6
year: '2020'
...
---
_id: '8283'
abstract:
- lang: eng
text: 'Drought and salt stress are the main environmental cues affecting the survival,
development, distribution, and yield of crops worldwide. MYB transcription factors
play a crucial role in plants’ biological processes, but the function of pineapple
MYB genes is still obscure. In this study, one of the pineapple MYB transcription
factors, AcoMYB4, was isolated and characterized. The results showed that AcoMYB4
is localized in the cell nucleus, and its expression is induced by low temperature,
drought, salt stress, and hormonal stimulation, especially by abscisic acid (ABA).
Overexpression of AcoMYB4 in rice and Arabidopsis enhanced plant sensitivity to
osmotic stress; it led to an increase in the number stomata on leaf surfaces and
lower germination rate under salt and drought stress. Furthermore, in AcoMYB4
OE lines, the membrane oxidation index, free proline, and soluble sugar contents
were decreased. In contrast, electrolyte leakage and malondialdehyde (MDA) content
increased significantly due to membrane injury, indicating higher sensitivity
to drought and salinity stresses. Besides the above, both the expression level
and activities of several antioxidant enzymes were decreased, indicating lower
antioxidant activity in AcoMYB4 transgenic plants. Moreover, under osmotic stress,
overexpression of AcoMYB4 inhibited ABA biosynthesis through a decrease in the
transcription of genes responsible for ABA synthesis (ABA1 and ABA2) and ABA signal
transduction factor ABI5. These results suggest that AcoMYB4 negatively regulates
osmotic stress by attenuating cellular ABA biosynthesis and signal transduction
pathways. '
acknowledgement: 'We would like to thank the reviewers for their helpful comments
on the original manuscript. '
article_number: '5272'
article_processing_charge: No
article_type: original
author:
- first_name: Huihuang
full_name: Chen, Huihuang
last_name: Chen
- first_name: Linyi
full_name: Lai, Linyi
last_name: Lai
- first_name: Lanxin
full_name: Li, Lanxin
id: 367EF8FA-F248-11E8-B48F-1D18A9856A87
last_name: Li
orcid: 0000-0002-5607-272X
- first_name: Liping
full_name: Liu, Liping
last_name: Liu
- first_name: Bello Hassan
full_name: Jakada, Bello Hassan
last_name: Jakada
- first_name: Youmei
full_name: Huang, Youmei
last_name: Huang
- first_name: Qing
full_name: He, Qing
last_name: He
- first_name: Mengnan
full_name: Chai, Mengnan
last_name: Chai
- first_name: Xiaoping
full_name: Niu, Xiaoping
last_name: Niu
- first_name: Yuan
full_name: Qin, Yuan
last_name: Qin
citation:
ama: Chen H, Lai L, Li L, et al. AcoMYB4, an Ananas comosus L. MYB transcription
factor, functions in osmotic stress through negative regulation of ABA signaling.
International Journal of Molecular Sciences. 2020;21(16). doi:10.3390/ijms21165727
apa: Chen, H., Lai, L., Li, L., Liu, L., Jakada, B. H., Huang, Y., … Qin, Y. (2020).
AcoMYB4, an Ananas comosus L. MYB transcription factor, functions in osmotic stress
through negative regulation of ABA signaling. International Journal of Molecular
Sciences. MDPI. https://doi.org/10.3390/ijms21165727
chicago: Chen, Huihuang, Linyi Lai, Lanxin Li, Liping Liu, Bello Hassan Jakada,
Youmei Huang, Qing He, Mengnan Chai, Xiaoping Niu, and Yuan Qin. “AcoMYB4, an
Ananas Comosus L. MYB Transcription Factor, Functions in Osmotic Stress through
Negative Regulation of ABA Signaling.” International Journal of Molecular Sciences.
MDPI, 2020. https://doi.org/10.3390/ijms21165727.
ieee: H. Chen et al., “AcoMYB4, an Ananas comosus L. MYB transcription factor,
functions in osmotic stress through negative regulation of ABA signaling,” International
Journal of Molecular Sciences, vol. 21, no. 16. MDPI, 2020.
ista: Chen H, Lai L, Li L, Liu L, Jakada BH, Huang Y, He Q, Chai M, Niu X, Qin Y.
2020. AcoMYB4, an Ananas comosus L. MYB transcription factor, functions in osmotic
stress through negative regulation of ABA signaling. International Journal of
Molecular Sciences. 21(16), 5272.
mla: Chen, Huihuang, et al. “AcoMYB4, an Ananas Comosus L. MYB Transcription Factor,
Functions in Osmotic Stress through Negative Regulation of ABA Signaling.” International
Journal of Molecular Sciences, vol. 21, no. 16, 5272, MDPI, 2020, doi:10.3390/ijms21165727.
short: H. Chen, L. Lai, L. Li, L. Liu, B.H. Jakada, Y. Huang, Q. He, M. Chai, X.
Niu, Y. Qin, International Journal of Molecular Sciences 21 (2020).
date_created: 2020-08-24T06:24:03Z
date_published: 2020-08-10T00:00:00Z
date_updated: 2026-10-18T22:30:40Z
day: '10'
ddc:
- '570'
department:
- _id: JiFr
doi: 10.3390/ijms21165727
external_id:
isi:
- '000565090300001'
pmid:
- '32785037'
file:
- access_level: open_access
checksum: 03b039244e6ae80580385fd9f577e2b2
content_type: application/pdf
creator: cziletti
date_created: 2020-08-25T09:53:50Z
date_updated: 2020-08-25T09:53:50Z
file_id: '8292'
file_name: 2020_IntMolecSciences_Chen.pdf
file_size: 5718755
relation: main_file
success: 1
file_date_updated: 2020-08-25T09:53:50Z
fulldoi: https://doi.org/10.3390/ijms21165727
has_accepted_license: '1'
intvolume: ' 21'
isi: 1
issue: '16'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
pmid: 1
publication: International Journal of Molecular Sciences
publication_identifier:
eissn:
- 1422-0067
issn:
- 1661-6596
publication_status: published
publisher: MDPI
quality_controlled: '1'
related_material:
record:
- id: '10083'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: AcoMYB4, an Ananas comosus L. MYB transcription factor, functions in osmotic
stress through negative regulation of ABA signaling
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: 21
year: '2020'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '9160'
abstract:
- lang: eng
text: Auxin is a key hormonal regulator, that governs plant growth and development
in concert with other hormonal pathways. The unique feature of auxin is its polar,
cell-to-cell transport that leads to the formation of local auxin maxima and gradients,
which coordinate initiation and patterning of plant organs. The molecular machinery
mediating polar auxin transport is one of the important points of interaction
with other hormones. Multiple hormonal pathways converge at the regulation of
auxin transport and form a regulatory network that integrates various developmental
and environmental inputs to steer plant development. In this review, we discuss
recent advances in understanding the mechanisms that underlie regulation of polar
auxin transport by multiple hormonal pathways. Specifically, we focus on the post-translational
mechanisms that contribute to fine-tuning of the abundance and polarity of auxin
transporters at the plasma membrane and thereby enable rapid modification of the
auxin flow to coordinate plant growth and development.
acknowledgement: H.S. is the recipient of a DOC Fellowship of the Austrian Academy
of Sciences at the Institute of Science and Technology, Austria. J.C.M. is the recipient
of an EMBO Long-Term Fellowship (ALTF number 710-2016). We would like to thank Jiri
Friml and Carina Baskett for critical reading of the manuscript and Shutang Tan
and Maciek Adamowski for helpful discussions. No conflict of interest declared.
article_number: '100048'
article_processing_charge: No
article_type: original
author:
- first_name: Hana
full_name: Semeradova, Hana
id: 42FE702E-F248-11E8-B48F-1D18A9856A87
last_name: Semeradova
- first_name: Juan C
full_name: Montesinos López, Juan C
id: 310A8E3E-F248-11E8-B48F-1D18A9856A87
last_name: Montesinos López
orcid: 0000-0001-9179-6099
- first_name: Eva
full_name: Benková, Eva
id: 38F4F166-F248-11E8-B48F-1D18A9856A87
last_name: Benková
orcid: 0000-0002-8510-9739
citation:
ama: 'Semerádová H, Montesinos López JC, Benková E. All roads lead to auxin: Post-translational
regulation of auxin transport by multiple hormonal pathways. Plant Communications.
2020;1(3). doi:10.1016/j.xplc.2020.100048'
apa: 'Semerádová, H., Montesinos López, J. C., & Benková, E. (2020). All roads
lead to auxin: Post-translational regulation of auxin transport by multiple hormonal
pathways. Plant Communications. Elsevier. https://doi.org/10.1016/j.xplc.2020.100048'
chicago: 'Semerádová, Hana, Juan C Montesinos López, and Eva Benková. “All Roads
Lead to Auxin: Post-Translational Regulation of Auxin Transport by Multiple Hormonal
Pathways.” Plant Communications. Elsevier, 2020. https://doi.org/10.1016/j.xplc.2020.100048.'
ieee: 'H. Semerádová, J. C. Montesinos López, and E. Benková, “All roads lead to
auxin: Post-translational regulation of auxin transport by multiple hormonal pathways,”
Plant Communications, vol. 1, no. 3. Elsevier, 2020.'
ista: 'Semerádová H, Montesinos López JC, Benková E. 2020. All roads lead to auxin:
Post-translational regulation of auxin transport by multiple hormonal pathways.
Plant Communications. 1(3), 100048.'
mla: 'Semerádová, Hana, et al. “All Roads Lead to Auxin: Post-Translational Regulation
of Auxin Transport by Multiple Hormonal Pathways.” Plant Communications,
vol. 1, no. 3, 100048, Elsevier, 2020, doi:10.1016/j.xplc.2020.100048.'
short: H. Semerádová, J.C. Montesinos López, E. Benková, Plant Communications 1
(2020).
corr_author: '1'
date_created: 2021-02-18T10:18:43Z
date_published: 2020-05-11T00:00:00Z
date_updated: 2026-10-18T22:30:42Z
day: '11'
ddc:
- '580'
department:
- _id: EvBe
doi: 10.1016/j.xplc.2020.100048
external_id:
isi:
- '000654052800010'
pmid:
- '33367243'
file:
- access_level: open_access
checksum: 785b266d82a94b007cf40dbbe7c4847e
content_type: application/pdf
creator: dernst
date_created: 2021-02-18T10:23:59Z
date_updated: 2021-02-18T10:23:59Z
file_id: '9161'
file_name: 2020_PlantComm_Semeradova.pdf
file_size: 840289
relation: main_file
success: 1
file_date_updated: 2021-02-18T10:23:59Z
fulldoi: https://doi.org/10.1016/j.xplc.2020.100048
has_accepted_license: '1'
intvolume: ' 1'
isi: 1
issue: '3'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-nd/4.0/
month: '05'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 261821BC-B435-11E9-9278-68D0E5697425
grant_number: '24746'
name: Molecular mechanisms of the cytokinin regulated endomembrane trafficking to
coordinate plant organogenesis
- _id: 253E54C8-B435-11E9-9278-68D0E5697425
grant_number: ALTF710-2016
name: Molecular mechanism of auxindriven formative divisions delineating lateral
root organogenesis in plants
publication: Plant Communications
publication_identifier:
issn:
- 2590-3462
publication_status: published
publisher: Elsevier
quality_controlled: '1'
related_material:
record:
- id: '10135'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: 'All roads lead to auxin: Post-translational regulation of auxin transport
by multiple hormonal pathways'
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: journal_article
user_id: 0043cee0-e5fc-11ee-9736-f83bc23afbf0
volume: 1
year: '2020'
...
---
_id: '7889'
abstract:
- lang: eng
text: Autoluminescent plants engineered to express a bacterial bioluminescence gene
cluster in plastids have not been widely adopted because of low light output.
We engineered tobacco plants with a fungal bioluminescence system that converts
caffeic acid (present in all plants) into luciferin and report self-sustained
luminescence that is visible to the naked eye. Our findings could underpin development
of a suite of imaging tools for plants.
acknowledgement: "This study was designed, performed and funded by Planta LLC. We
thank K. Wood for assisting in manuscript development. Planta acknowledges support
from the Skolkovo Innovation Centre. We thank D. Bolotin and the Milaboratory (milaboratory.com)
for access to computing and storage infrastructure. We thank S. Shakhov for providing\r\nphotography
equipment. The Synthetic Biology Group is funded by the MRC London Institute of
Medical Sciences (UKRI MC-A658-5QEA0, K.S.S.). K.S.S. is supported by an Imperial
College Research Fellowship. Experiments were partially carried out using equipment
provided by the Institute of Bioorganic Chemistry of the Russian Academy\r\nof Sciences
Сore Facility (CKP IBCH; supported by the Russian Ministry of Education and Science
Grant RFMEFI62117X0018). The F.A.K. lab is supported by ERC grant agreement 771209—CharFL.
This project received funding from the European Union’s Horizon 2020 Research and
Innovation Programme under Marie Skłodowska-Curie\r\nGrant Agreement 665385. K.S.S.
acknowledges support by President’s Grant 075-15-2019-411. Design and assembly of
some of the plasmids was supported by Russian Science Foundation grant 19-74-10102.
Imaging experiments were partially supported by Russian Science Foundation grant
17-14-01169p. LC-MS/MS analyses of extracts were\r\nsupported by Russian Science
Foundation grant 16-14-00052p. Design and assembly of plasmids was partially supported
by grant 075-15-2019-1789 from the Ministry of Science and Higher Education of the
Russian Federation allocated to the Center for Precision Genome Editing and Genetic
Technologies for Biomedicine. The authors\r\nwould like to acknowledge the work
of Genomics Core Facility of the Skolkovo Institute of Science and Technology, which
performed the sequencing and bioinformatic analysis."
article_processing_charge: No
article_type: original
author:
- first_name: Tatiana
full_name: Mitiouchkina, Tatiana
last_name: Mitiouchkina
- first_name: Alexander S.
full_name: Mishin, Alexander S.
last_name: Mishin
- first_name: Louisa
full_name: Gonzalez Somermeyer, Louisa
id: 4720D23C-F248-11E8-B48F-1D18A9856A87
last_name: Gonzalez Somermeyer
orcid: 0000-0001-9139-5383
- first_name: Nadezhda M.
full_name: Markina, Nadezhda M.
last_name: Markina
- first_name: Tatiana V.
full_name: Chepurnyh, Tatiana V.
last_name: Chepurnyh
- first_name: Elena B.
full_name: Guglya, Elena B.
last_name: Guglya
- first_name: Tatiana A.
full_name: Karataeva, Tatiana A.
last_name: Karataeva
- first_name: Kseniia A.
full_name: Palkina, Kseniia A.
last_name: Palkina
- first_name: Ekaterina S.
full_name: Shakhova, Ekaterina S.
last_name: Shakhova
- first_name: Liliia I.
full_name: Fakhranurova, Liliia I.
last_name: Fakhranurova
- first_name: Sofia V.
full_name: Chekova, Sofia V.
last_name: Chekova
- first_name: Aleksandra S.
full_name: Tsarkova, Aleksandra S.
last_name: Tsarkova
- first_name: Yaroslav V.
full_name: Golubev, Yaroslav V.
last_name: Golubev
- first_name: Vadim V.
full_name: Negrebetsky, Vadim V.
last_name: Negrebetsky
- first_name: Sergey A.
full_name: Dolgushin, Sergey A.
last_name: Dolgushin
- first_name: Pavel V.
full_name: Shalaev, Pavel V.
last_name: Shalaev
- first_name: Dmitry
full_name: Shlykov, Dmitry
last_name: Shlykov
- first_name: Olesya A.
full_name: Melnik, Olesya A.
last_name: Melnik
- first_name: Victoria O.
full_name: Shipunova, Victoria O.
last_name: Shipunova
- first_name: Sergey M.
full_name: Deyev, Sergey M.
last_name: Deyev
- first_name: Andrey I.
full_name: Bubyrev, Andrey I.
last_name: Bubyrev
- first_name: Alexander S.
full_name: Pushin, Alexander S.
last_name: Pushin
- first_name: Vladimir V.
full_name: Choob, Vladimir V.
last_name: Choob
- first_name: Sergey V.
full_name: Dolgov, Sergey V.
last_name: Dolgov
- first_name: Fyodor
full_name: Kondrashov, Fyodor
id: 44FDEF62-F248-11E8-B48F-1D18A9856A87
last_name: Kondrashov
orcid: 0000-0001-8243-4694
- first_name: Ilia V.
full_name: Yampolsky, Ilia V.
last_name: Yampolsky
- first_name: Karen S.
full_name: Sarkisyan, Karen S.
last_name: Sarkisyan
citation:
ama: Mitiouchkina T, Mishin AS, Gonzalez Somermeyer L, et al. Plants with genetically
encoded autoluminescence. Nature Biotechnology. 2020;38:944-946. doi:10.1038/s41587-020-0500-9
apa: Mitiouchkina, T., Mishin, A. S., Gonzalez Somermeyer, L., Markina, N. M., Chepurnyh,
T. V., Guglya, E. B., … Sarkisyan, K. S. (2020). Plants with genetically encoded
autoluminescence. Nature Biotechnology. Springer Nature. https://doi.org/10.1038/s41587-020-0500-9
chicago: Mitiouchkina, Tatiana, Alexander S. Mishin, Louisa Gonzalez Somermeyer,
Nadezhda M. Markina, Tatiana V. Chepurnyh, Elena B. Guglya, Tatiana A. Karataeva,
et al. “Plants with Genetically Encoded Autoluminescence.” Nature Biotechnology.
Springer Nature, 2020. https://doi.org/10.1038/s41587-020-0500-9.
ieee: T. Mitiouchkina et al., “Plants with genetically encoded autoluminescence,”
Nature Biotechnology, vol. 38. Springer Nature, pp. 944–946, 2020.
ista: Mitiouchkina T, Mishin AS, Gonzalez Somermeyer L, Markina NM, Chepurnyh TV,
Guglya EB, Karataeva TA, Palkina KA, Shakhova ES, Fakhranurova LI, Chekova SV,
Tsarkova AS, Golubev YV, Negrebetsky VV, Dolgushin SA, Shalaev PV, Shlykov D,
Melnik OA, Shipunova VO, Deyev SM, Bubyrev AI, Pushin AS, Choob VV, Dolgov SV,
Kondrashov F, Yampolsky IV, Sarkisyan KS. 2020. Plants with genetically encoded
autoluminescence. Nature Biotechnology. 38, 944–946.
mla: Mitiouchkina, Tatiana, et al. “Plants with Genetically Encoded Autoluminescence.”
Nature Biotechnology, vol. 38, Springer Nature, 2020, pp. 944–46, doi:10.1038/s41587-020-0500-9.
short: T. Mitiouchkina, A.S. Mishin, L. Gonzalez Somermeyer, N.M. Markina, T.V.
Chepurnyh, E.B. Guglya, T.A. Karataeva, K.A. Palkina, E.S. Shakhova, L.I. Fakhranurova,
S.V. Chekova, A.S. Tsarkova, Y.V. Golubev, V.V. Negrebetsky, S.A. Dolgushin, P.V.
Shalaev, D. Shlykov, O.A. Melnik, V.O. Shipunova, S.M. Deyev, A.I. Bubyrev, A.S.
Pushin, V.V. Choob, S.V. Dolgov, F. Kondrashov, I.V. Yampolsky, K.S. Sarkisyan,
Nature Biotechnology 38 (2020) 944–946.
date_created: 2020-05-25T15:02:00Z
date_published: 2020-04-27T00:00:00Z
date_updated: 2025-04-14T07:49:47Z
day: '27'
ddc:
- '570'
department:
- _id: FyKo
doi: 10.1038/s41587-020-0500-9
ec_funded: 1
external_id:
isi:
- '000529298800003'
pmid:
- '32341562'
file:
- access_level: open_access
checksum: 1b30467500ec6277229a875b06e196d0
content_type: application/pdf
creator: dernst
date_created: 2020-08-28T08:57:07Z
date_updated: 2021-03-02T23:30:03Z
embargo: 2021-03-01
file_id: '8316'
file_name: 2020_NatureBiotech_Mitiouchkina.pdf
file_size: 1180086
relation: main_file
file_date_updated: 2021-03-02T23:30:03Z
fulldoi: https://doi.org/10.1038/s41587-020-0500-9
has_accepted_license: '1'
intvolume: ' 38'
isi: 1
language:
- iso: eng
month: '04'
oa: 1
oa_version: Submitted Version
page: 944-946
pmid: 1
project:
- _id: 26580278-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '771209'
name: Characterizing the fitness landscape on population and global scales
publication: Nature Biotechnology
publication_identifier:
eissn:
- 1546-1696
issn:
- 1087-0156
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- relation: erratum
url: https://doi.org/10.1038/s41587-020-0578-0
scopus_import: '1'
status: public
title: Plants with genetically encoded autoluminescence
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 38
year: '2020'
...
---
OA_place: publisher
_id: '7525'
abstract:
- lang: eng
text: "The medial habenula (MHb) is an evolutionary conserved epithalamic structure
important for the modulation of emotional memory. It is involved in regulation
of anxiety, compulsive behavior, addiction (nicotinic and opioid), sexual and
feeding behavior. MHb receives inputs from septal regions and projects exclusively
to the interpeduncular nucleus (IPN). Distinct sub-regions of the septum project
to different subnuclei of MHb: the bed nucleus of anterior commissure projects
to dorsal MHb and the triangular septum projects to ventral MHb. Furthermore,
the dorsal and ventral MHb project to the lateral and rostral/central IPN, respectively.
Importantly, these projections have unique features of prominent co-release of
different neurotransmitters and requirement of a peculiar type of calcium channel
for release. In general, synaptic neurotransmission requires an activity-dependent
influx of Ca2+ into the presynaptic terminal through voltage-gated calcium channels.
The calcium channel family most commonly involved in neurotransmitter release
comprises three members, P/Q-, N- and R-type with Cav2.1, Cav2.2 and Cav2.3 subunits,
respectively. In contrast to most CNS synapses that mainly express Cav2.1 and/or
Cav2.2, MHb terminals in the IPN exclusively express Cav2.3. In other parts of
the brain, such as the hippocampus, Cav2.3 is mostly located to postsynaptic elements.
This unusual presynaptic location of Cav2.3 in the MHb-IPN pathway implies unique
mechanisms of glutamate release in this pathway. One potential example of such
uniqueness is the facilitation of release by GABAB receptor (GBR) activation.
Presynaptic GBRs usually inhibit the release of neurotransmitters by inhibiting
presynaptic calcium channels. MHb shows the highest expression levels of GBR in
the brain. GBRs comprise two subunits, GABAB1 (GB1) and GABAB2 (GB2), and are
associated with auxiliary subunits, called potassium channel tetramerization domain
containing proteins (KCTD) 8, 12, 12b and 16. Among these four subunits, KCTD12b
is exclusively expressed in ventral MHb, and KCTD8 shows the strongest expression
in the whole MHb among other brain regions, indicating that KCTD8 and KCTD12b
may be involved in the unique mechanisms of neurotransmitter release mediated
by Cav2.3 and regulated by GBRs in this pathway. \r\nIn the present study, we
first verified that neurotransmission in both dorsal and ventral MHb-IPN pathways
is mainly mediated by Cav2.3 using a selective blocker of R-type channels, SNX-482.
We next found that baclofen, a GBR agonist, has facilitatory effects on release
from ventral MHb terminal in rostral IPN, whereas it has inhibitory effects on
release from dorsal MHb terminals in lateral IPN, indicating that KCTD12b expressed
exclusively in ventral MHb may have a role in the facilitatory effects of GBR
activation. In a heterologous expression system using HEK cells, we found that
KCTD8 and KCTD12b but not KCTD12 directly bind with Cav2.3. Pre-embedding immunogold
electron microscopy data show that Cav2.3 and KCTD12b are distributed most densely
in presynaptic active zone in IPN with KCTD12b being present only in rostral/central
but not lateral IPN, whereas GABAB, KCTD8 and KCTD12 are distributed most densely
in perisynaptic sites with KCTD12 present more frequently in postsynaptic elements
and only in rostral/central IPN. In freeze-fracture replica labelling, Cav2.3,
KCTD8 and KCTD12b are co-localized with each other in the same active zone indicating
that they may form complexes regulating vesicle release in rostral IPN. \r\nOn
electrophysiological studies of wild type (WT) mice, we found that paired-pulse
ratio in rostral IPN of KCTD12b knock-out (KO) mice is lower than those of WT
and KCTD8 KO mice. Consistent with this finding, in mean variance analysis, release
probability in rostral IPN of KCTD12b KO mice is higher than that of WT and KCTD8
KO mice. Although paired-pulse ratios are not different between WT and KCTD8 KO
mice, the mean variance analysis revealed significantly lower release probability
in rostral IPN of KCTD8 KO than WT mice. These results demonstrate bidirectional
regulation of Cav2.3-mediated release by KCTD8 and KCTD12b without GBR activation
in rostral IPN. Finally, we examined the baclofen effects in rostral IPN of KCTD8
and KCTD12b KO mice, and found the facilitation of release remained in both KO
mice, indicating that the peculiar effects of the GBR activation in this pathway
do not depend on the selective expression of these KCTD subunits in ventral MHb.
However, we found that presynaptic potentiation of evoked EPSC amplitude by baclofen
falls to baseline after washout faster in KCTD12b KO mice than WT, KCTD8 KO and
KCTD8/12b double KO mice. This result indicates that KCTD12b is involved in sustained
potentiation of vesicle release by GBR activation, whereas KCTD8 is involved in
its termination in the absence of KCTD12b. Consistent with these functional findings,
replica labelling revealed an increase in density of KCTD8, but not Cav2.3 or
GBR at active zone in rostral IPN of KCTD12b KO mice compared with that of WT
mice, suggesting that increased association of KCTD8 with Cav2.3 facilitates the
release probability and termination of the GBR effect in the absence of KCTD12b.\r\nIn
summary, our study provided new insights into the physiological roles of presynaptic
Cav2.3, GBRs and their auxiliary subunits KCTDs at an evolutionary conserved neuronal
circuit. Future studies will be required to identify the exact molecular mechanism
underlying the GBR-mediated presynaptic potentiation on ventral MHb terminals.
It remains to be determined whether the prominent presence of presynaptic KCTDs
at active zone could exert similar neuromodulatory functions in different pathways
of the brain.\r\n"
acknowledged_ssus:
- _id: EM-Fac
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Pradeep
full_name: Bhandari, Pradeep
id: 45EDD1BC-F248-11E8-B48F-1D18A9856A87
last_name: Bhandari
orcid: 0000-0003-0863-4481
citation:
ama: Bhandari P. Localization and functional role of Cav2.3 in the medial habenula
to interpeduncular nucleus pathway. 2020. doi:10.15479/AT:ISTA:7525
apa: Bhandari, P. (2020). Localization and functional role of Cav2.3 in the medial
habenula to interpeduncular nucleus pathway. Institute of Science and Technology
Austria. https://doi.org/10.15479/AT:ISTA:7525
chicago: Bhandari, Pradeep. “Localization and Functional Role of Cav2.3 in the Medial
Habenula to Interpeduncular Nucleus Pathway.” Institute of Science and Technology
Austria, 2020. https://doi.org/10.15479/AT:ISTA:7525.
ieee: P. Bhandari, “Localization and functional role of Cav2.3 in the medial habenula
to interpeduncular nucleus pathway,” Institute of Science and Technology Austria,
2020.
ista: Bhandari P. 2020. Localization and functional role of Cav2.3 in the medial
habenula to interpeduncular nucleus pathway. Institute of Science and Technology
Austria.
mla: Bhandari, Pradeep. Localization and Functional Role of Cav2.3 in the Medial
Habenula to Interpeduncular Nucleus Pathway. Institute of Science and Technology
Austria, 2020, doi:10.15479/AT:ISTA:7525.
short: P. Bhandari, Localization and Functional Role of Cav2.3 in the Medial Habenula
to Interpeduncular Nucleus Pathway, Institute of Science and Technology Austria,
2020.
corr_author: '1'
date_created: 2020-02-26T10:56:37Z
date_published: 2020-02-28T00:00:00Z
date_updated: 2026-04-08T07:27:27Z
day: '28'
ddc:
- '570'
degree_awarded: PhD
department:
- _id: RySh
doi: 10.15479/AT:ISTA:7525
file:
- access_level: open_access
checksum: 4589234fdb12b4ad72273b311723a7b4
content_type: application/pdf
creator: pbhandari
date_created: 2020-02-28T08:37:53Z
date_updated: 2021-03-01T23:30:04Z
embargo: 2021-02-28
file_id: '7538'
file_name: Pradeep Bhandari Thesis.pdf
file_size: 9646346
relation: main_file
title: Localization and functional role of Cav2.3 in the medial habenula to interpeduncular
nucleus pathway
- access_level: closed
checksum: aa79490553ca0a5c9b6fbcd152e93928
content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
creator: pbhandari
date_created: 2020-02-28T08:47:14Z
date_updated: 2021-03-01T23:30:04Z
embargo_to: open_access
file_id: '7539'
file_name: Pradeep Bhandari Thesis.docx
file_size: 35252164
relation: source_file
title: Localization and functional role of Cav2.3 in the medial habenula to interpeduncular
nucleus pathway
file_date_updated: 2021-03-01T23:30:04Z
fulldoi: https://doi.org/10.15479/AT:ISTA:7525
has_accepted_license: '1'
keyword:
- Cav2.3
- medial habenula (MHb)
- interpeduncular nucleus (IPN)
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
page: '79'
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
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: Localization and functional role of Cav2.3 in the medial habenula to interpeduncular
nucleus pathway
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2020'
...
---
_id: '8139'
abstract:
- lang: eng
text: 'Clathrin-mediated endocytosis (CME) is a crucial cellular process implicated
in many aspects of plant growth, development, intra- and inter-cellular signaling,
nutrient uptake and pathogen defense. Despite these significant roles, little
is known about the precise molecular details of how it functions in planta. In
order to facilitate the direct quantitative study of plant CME, here we review
current routinely used methods and present refined, standardized quantitative
imaging protocols which allow the detailed characterization of CME at multiple
scales in plant tissues. These include: (i) an efficient electron microscopy protocol
for the imaging of Arabidopsis CME vesicles in situ, thus providing a method for
the detailed characterization of the ultra-structure of clathrin-coated vesicles;
(ii) a detailed protocol and analysis for quantitative live-cell fluorescence
microscopy to precisely examine the temporal interplay of endocytosis components
during single CME events; (iii) a semi-automated analysis to allow the quantitative
characterization of global internalization of cargos in whole plant tissues; and
(iv) an overview and validation of useful genetic and pharmacological tools to
interrogate the molecular mechanisms and function of CME in intact plant samples.'
acknowledged_ssus:
- _id: EM-Fac
- _id: Bio
acknowledgement: "This paper is dedicated to the memory of Christien Merrifield. He
pioneered quantitative\r\nimaging approaches in mammalian CME and his mentorship
inspired the development of all\r\nthe analysis methods presented here. His joy
in research, pure scientific curiosity and\r\nmicroscopy excellence remain a constant
inspiration. We thank Daniel Van Damme for gifting\r\nus the CLC2-GFP x TPLATE-TagRFP
plants used in this manuscript. We further thank the\r\nScientific Service Units
at IST Austria; specifically, the Electron Microscopy Facility for\r\ntechnical
assistance (in particular Vanessa Zheden) and the BioImaging Facility BioImaging\r\nFacility
for access to equipment. "
article_number: jcs248062
article_processing_charge: No
article_type: original
author:
- first_name: Alexander J
full_name: Johnson, Alexander J
id: 46A62C3A-F248-11E8-B48F-1D18A9856A87
last_name: Johnson
orcid: 0000-0002-2739-8843
- first_name: Nataliia
full_name: Gnyliukh, Nataliia
id: 390C1120-F248-11E8-B48F-1D18A9856A87
last_name: Gnyliukh
orcid: 0000-0002-2198-0509
- first_name: Walter
full_name: Kaufmann, Walter
id: 3F99E422-F248-11E8-B48F-1D18A9856A87
last_name: Kaufmann
orcid: 0000-0001-9735-5315
- first_name: Madhumitha
full_name: Narasimhan, Madhumitha
id: 44BF24D0-F248-11E8-B48F-1D18A9856A87
last_name: Narasimhan
orcid: 0000-0002-8600-0671
- first_name: G
full_name: Vert, G
last_name: Vert
- first_name: SY
full_name: Bednarek, SY
last_name: Bednarek
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: Johnson AJ, Gnyliukh N, Kaufmann W, et al. Experimental toolbox for quantitative
evaluation of clathrin-mediated endocytosis in the plant model Arabidopsis. Journal
of Cell Science. 2020;133(15). doi:10.1242/jcs.248062
apa: Johnson, A. J., Gnyliukh, N., Kaufmann, W., Narasimhan, M., Vert, G., Bednarek,
S., & Friml, J. (2020). Experimental toolbox for quantitative evaluation of
clathrin-mediated endocytosis in the plant model Arabidopsis. Journal of Cell
Science. The Company of Biologists. https://doi.org/10.1242/jcs.248062
chicago: Johnson, Alexander J, Nataliia Gnyliukh, Walter Kaufmann, Madhumitha Narasimhan,
G Vert, SY Bednarek, and Jiří Friml. “Experimental Toolbox for Quantitative Evaluation
of Clathrin-Mediated Endocytosis in the Plant Model Arabidopsis.” Journal of
Cell Science. The Company of Biologists, 2020. https://doi.org/10.1242/jcs.248062.
ieee: A. J. Johnson et al., “Experimental toolbox for quantitative evaluation
of clathrin-mediated endocytosis in the plant model Arabidopsis,” Journal of
Cell Science, vol. 133, no. 15. The Company of Biologists, 2020.
ista: Johnson AJ, Gnyliukh N, Kaufmann W, Narasimhan M, Vert G, Bednarek S, Friml
J. 2020. Experimental toolbox for quantitative evaluation of clathrin-mediated
endocytosis in the plant model Arabidopsis. Journal of Cell Science. 133(15),
jcs248062.
mla: Johnson, Alexander J., et al. “Experimental Toolbox for Quantitative Evaluation
of Clathrin-Mediated Endocytosis in the Plant Model Arabidopsis.” Journal of
Cell Science, vol. 133, no. 15, jcs248062, The Company of Biologists, 2020,
doi:10.1242/jcs.248062.
short: A.J. Johnson, N. Gnyliukh, W. Kaufmann, M. Narasimhan, G. Vert, S. Bednarek,
J. Friml, Journal of Cell Science 133 (2020).
date_created: 2020-07-21T08:58:19Z
date_published: 2020-08-06T00:00:00Z
date_updated: 2026-10-18T22:30:45Z
day: '06'
ddc:
- '575'
department:
- _id: JiFr
- _id: EM-Fac
doi: 10.1242/jcs.248062
ec_funded: 1
external_id:
isi:
- '000561047900021'
pmid:
- '32616560'
file:
- access_level: open_access
checksum: 2d11f79a0b4e0a380fb002b933da331a
content_type: application/pdf
creator: ajohnson
date_created: 2020-11-26T17:12:51Z
date_updated: 2021-08-08T22:30:03Z
embargo: 2021-08-07
file_id: '8815'
file_name: 2020 - Johnson - JSC - plant CME toolbox.pdf
file_size: 15150403
relation: main_file
file_date_updated: 2021-08-08T22:30:03Z
fulldoi: https://doi.org/10.1242/jcs.248062
has_accepted_license: '1'
intvolume: ' 133'
isi: 1
issue: '15'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 26538374-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: I03630
name: Molecular mechanisms of endocytic cargo recognition in plants
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
publication: Journal of Cell Science
publication_identifier:
eissn:
- 1477-9137
issn:
- 0021-9533
publication_status: published
publisher: The Company of Biologists
quality_controlled: '1'
related_material:
record:
- id: '14510'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Experimental toolbox for quantitative evaluation of clathrin-mediated endocytosis
in the plant model Arabidopsis
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 133
year: '2020'
...
---
OA_place: publisher
_id: '8340'
abstract:
- lang: eng
text: Mitochondria are sites of oxidative phosphorylation in eukaryotic cells. Oxidative
phosphorylation operates by a chemiosmotic mechanism made possible by redox-driven
proton pumping machines which establish a proton motive force across the inner
mitochondrial membrane. This electrochemical proton gradient is used to drive
ATP synthesis, which powers the majority of cellular processes such as protein
synthesis, locomotion and signalling. In this thesis I investigate the structures
and molecular mechanisms of two inner mitochondrial proton pumping enzymes, respiratory
complex I and transhydrogenase. I present the first high-resolution structure
of the full transhydrogenase from any species, and a significantly improved structure
of complex I. Improving the resolution from 3.3 Å available previously to up to
2.3 Å in this thesis allowed us to model bound water molecules, crucial in the
proton pumping mechanism. For both enzymes, up to five cryo-EM datasets with different
substrates and inhibitors bound were solved to delineate the catalytic cycle and
understand the proton pumping mechanism. In transhydrogenase, the proton channel
is gated by reversible detachment of the NADP(H)-binding domain which opens the
proton channel to the opposite sites of the membrane. In complex I, the proton
channels are gated by reversible protonation of key glutamate and lysine residues
and breaking of the water wire connecting the proton pumps with the quinone reduction
site. The tight coupling between the redox and the proton pumping reactions in
transhydrogenase is achieved by controlling the NADP(H) exchange which can only
happen when the NADP(H)-binding domain interacts with the membrane domain. In
complex I, coupling is achieved by cycling of the whole complex between the closed
state, in which quinone can get reduced, and the open state, in which NADH can
induce quinol ejection from the binding pocket. On the basis of these results
I propose detailed mechanisms for catalytic cycles of transhydrogenase and complex
I that are consistent with a large amount of previous work. In both enzymes, conformational
and electrostatic mechanisms contribute to the overall catalytic process. Results
presented here could be used for better understanding of the human pathologies
arising from deficiencies of complex I or transhydrogenase and could be used to
develop novel therapies.
acknowledged_ssus:
- _id: EM-Fac
acknowledgement: 'I acknowledge the support of IST facilities, especially the Electron
Miscroscopy facility for providing training and resources. Special thanks also go
to cryo-EM specialists who helped me to collect the data present here: Dr Valentin
Hodirnau (IST Austria), Dr Tom Heuser (IMBA, Vienna), Dr Rebecca Thompson (Uni.
of Leeds) and Dr Jirka Nováček (CEITEC). This work has been supported by iNEXT,
project number 653706, funded by the Horizon 2020 programme of the European Union.
This project has received funding from the European Union’s Horizon 2020 research
and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 665385.'
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Domen
full_name: Kampjut, Domen
id: 37233050-F248-11E8-B48F-1D18A9856A87
last_name: Kampjut
orcid: 0000-0002-6018-3422
citation:
ama: Kampjut D. Molecular mechanisms of mitochondrial redox-coupled proton pumping
enzymes. 2020. doi:10.15479/AT:ISTA:8340
apa: Kampjut, D. (2020). Molecular mechanisms of mitochondrial redox-coupled
proton pumping enzymes. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8340
chicago: Kampjut, Domen. “Molecular Mechanisms of Mitochondrial Redox-Coupled Proton
Pumping Enzymes.” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:8340.
ieee: D. Kampjut, “Molecular mechanisms of mitochondrial redox-coupled proton pumping
enzymes,” Institute of Science and Technology Austria, 2020.
ista: Kampjut D. 2020. Molecular mechanisms of mitochondrial redox-coupled proton
pumping enzymes. Institute of Science and Technology Austria.
mla: Kampjut, Domen. Molecular Mechanisms of Mitochondrial Redox-Coupled Proton
Pumping Enzymes. Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8340.
short: D. Kampjut, Molecular Mechanisms of Mitochondrial Redox-Coupled Proton Pumping
Enzymes, Institute of Science and Technology Austria, 2020.
corr_author: '1'
date_created: 2020-09-07T18:42:23Z
date_published: 2020-09-09T00:00:00Z
date_updated: 2026-04-08T07:43:58Z
day: '09'
ddc:
- '572'
degree_awarded: PhD
department:
- _id: LeSa
doi: 10.15479/AT:ISTA:8340
ec_funded: 1
file:
- access_level: closed
checksum: dd270baf82121eb4472ad19d77bf227c
content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
creator: dkampjut
date_created: 2020-09-08T13:32:06Z
date_updated: 2021-09-11T22:30:04Z
embargo_to: open_access
file_id: '8345'
file_name: ThesisFull20200908.docx
file_size: 166146359
relation: source_file
- access_level: open_access
checksum: 82fce6f95ffa47ecc4ebca67ea2cc38c
content_type: application/pdf
creator: dernst
date_created: 2020-09-14T15:02:20Z
date_updated: 2021-09-11T22:30:04Z
embargo: 2021-09-10
file_id: '8393'
file_name: 2020_Thesis_Kampjut.pdf
file_size: 13873769
relation: main_file
file_date_updated: 2021-09-11T22:30:04Z
fulldoi: https://doi.org/10.15479/AT:ISTA:8340
has_accepted_license: '1'
language:
- iso: eng
month: '09'
oa: 1
oa_version: None
page: '242'
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
publication_identifier:
isbn:
- 978-3-99078-008-4
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '6848'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Leonid A
full_name: Sazanov, Leonid A
id: 338D39FE-F248-11E8-B48F-1D18A9856A87
last_name: Sazanov
orcid: 0000-0002-0977-7989
title: Molecular mechanisms of mitochondrial redox-coupled proton pumping enzymes
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2020'
...
---
_id: '7427'
abstract:
- lang: eng
text: Plants, like other multicellular organisms, survive through a delicate balance
between growth and defense against pathogens. Salicylic acid (SA) is a major defense
signal in plants, and the perception mechanism as well as downstream signaling
activating the immune response are known. Here, we identify a parallel SA signaling
that mediates growth attenuation. SA directly binds to A subunits of protein phosphatase
2A (PP2A), inhibiting activity of this complex. Among PP2A targets, the PIN2 auxin
transporter is hyperphosphorylated in response to SA, leading to changed activity
of this important growth regulator. Accordingly, auxin transport and auxin-mediated
root development, including growth, gravitropic response, and lateral root organogenesis,
are inhibited. This study reveals how SA, besides activating immunity, concomitantly
attenuates growth through crosstalk with the auxin distribution network. Further
analysis of this dual role of SA and characterization of additional SA-regulated
PP2A targets will provide further insights into mechanisms maintaining a balance
between growth and defense.
acknowledged_ssus:
- _id: Bio
- _id: LifeSc
acknowledgement: "We thank Shigeyuki Betsuyaku (University of Tsukuba), Alison Delong
(Brown University), Xinnian Dong (Duke University), Dolf Weijers (Wageningen University),
Yuelin Zhang (UBC), and Martine Pastuglia (Institut Jean-Pierre Bourgin) for sharing
published materials; Jana Riederer for help with cantharidin physiological analysis;
David Domjan for help with cloning pET28a-PIN2HL; Qing Lu for help with DARTS; Hana
Kozubı´kova´ for technical support on SA derivative synthesis; Zuzana Vondra´ kova´
for technical support with tobacco cells; Lucia Strader (Washington University),
Bert De Rybel (Ghent University), Bartel Vanholme (Ghent University), and Lukas
Mach (BOKU) for helpful discussions; and bioimaging and life science facilities
of IST Austria for continuous support. We gratefully acknowledge the Nottingham
Arabidopsis Stock Center (NASC) for providing T-DNA insertional mutants. The DSC
and SPR instruments were provided by the EQ-BOKU VIBT GmbH and the BOKU Core Facility
for Biomolecular and Cellular Analysis, with help of Irene Schaffner. The research
leading to these results has received funding from the European Union’s Horizon
2020 program (ERC grant agreement no. 742985 to J.F.) and the People Programme (Marie
Curie Actions) of the European Union’s Seventh Framework Programme (FP7/2007-2013)
under REA grant agreement no. 291734. S.T. was supported by a European Molecular
Biology Organization (EMBO) long-term postdoctoral fellowship (ALTF 723-2015). O.N.
was supported by the Ministry of Education, Youth and Sports of the Czech Republic
(European Regional Development Fund-Project ‘‘Centre for Experimental Plant Biology’’
no. CZ.02.1.01/0.0/0.0/16_019/0000738). J. Pospısil was supported by European Regional
Development Fund Project ‘‘Centre for Experimental Plant Biology’’\r\n(no. CZ.02.1.01/0.0/0.0/16_019/0000738).
J. Petrasek was supported by EU Operational Programme Prague-Competitiveness (no.
CZ.2.16/3.1.00/21519). "
article_processing_charge: No
article_type: original
author:
- first_name: Shutang
full_name: Tan, Shutang
id: 2DE75584-F248-11E8-B48F-1D18A9856A87
last_name: Tan
orcid: 0000-0002-0471-8285
- first_name: Melinda F
full_name: Abas, Melinda F
id: 3CFB3B1C-F248-11E8-B48F-1D18A9856A87
last_name: Abas
- first_name: Inge
full_name: Verstraeten, Inge
id: 362BF7FE-F248-11E8-B48F-1D18A9856A87
last_name: Verstraeten
orcid: 0000-0001-7241-2328
- first_name: Matous
full_name: Glanc, Matous
id: 1AE1EA24-02D0-11E9-9BAA-DAF4881429F2
last_name: Glanc
orcid: 0000-0003-0619-7783
- first_name: Gergely
full_name: Molnar, Gergely
id: 34F1AF46-F248-11E8-B48F-1D18A9856A87
last_name: Molnar
- first_name: Jakub
full_name: Hajny, Jakub
id: 4800CC20-F248-11E8-B48F-1D18A9856A87
last_name: Hajny
orcid: 0000-0003-2140-7195
- first_name: Pavel
full_name: Lasák, Pavel
last_name: Lasák
- first_name: Ivan
full_name: Petřík, Ivan
last_name: Petřík
- first_name: Eugenia
full_name: Russinova, Eugenia
last_name: Russinova
- first_name: Jan
full_name: Petrášek, Jan
last_name: Petrášek
- first_name: Ondřej
full_name: Novák, Ondřej
last_name: Novák
- first_name: Jiří
full_name: Pospíšil, Jiří
last_name: Pospíšil
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: Tan S, Abas MF, Verstraeten I, et al. Salicylic acid targets protein phosphatase
2A to attenuate growth in plants. Current Biology. 2020;30(3):381-395.e8.
doi:10.1016/j.cub.2019.11.058
apa: Tan, S., Abas, M. F., Verstraeten, I., Glanc, M., Molnar, G., Hajny, J., …
Friml, J. (2020). Salicylic acid targets protein phosphatase 2A to attenuate growth
in plants. Current Biology. Cell Press. https://doi.org/10.1016/j.cub.2019.11.058
chicago: Tan, Shutang, Melinda F Abas, Inge Verstraeten, Matous Glanc, Gergely Molnar,
Jakub Hajny, Pavel Lasák, et al. “Salicylic Acid Targets Protein Phosphatase 2A
to Attenuate Growth in Plants.” Current Biology. Cell Press, 2020. https://doi.org/10.1016/j.cub.2019.11.058.
ieee: S. Tan et al., “Salicylic acid targets protein phosphatase 2A to attenuate
growth in plants,” Current Biology, vol. 30, no. 3. Cell Press, p. 381–395.e8,
2020.
ista: Tan S, Abas MF, Verstraeten I, Glanc M, Molnar G, Hajny J, Lasák P, Petřík
I, Russinova E, Petrášek J, Novák O, Pospíšil J, Friml J. 2020. Salicylic acid
targets protein phosphatase 2A to attenuate growth in plants. Current Biology.
30(3), 381–395.e8.
mla: Tan, Shutang, et al. “Salicylic Acid Targets Protein Phosphatase 2A to Attenuate
Growth in Plants.” Current Biology, vol. 30, no. 3, Cell Press, 2020, p.
381–395.e8, doi:10.1016/j.cub.2019.11.058.
short: S. Tan, M.F. Abas, I. Verstraeten, M. Glanc, G. Molnar, J. Hajny, P. Lasák,
I. Petřík, E. Russinova, J. Petrášek, O. Novák, J. Pospíšil, J. Friml, Current
Biology 30 (2020) 381–395.e8.
corr_author: '1'
date_created: 2020-02-02T23:01:00Z
date_published: 2020-02-03T00:00:00Z
date_updated: 2026-10-18T22:30:48Z
day: '03'
ddc:
- '580'
department:
- _id: JiFr
- _id: EvBe
doi: 10.1016/j.cub.2019.11.058
ec_funded: 1
external_id:
isi:
- '000511287900018'
pmid:
- '31956021'
file:
- access_level: open_access
checksum: 16f7d51fe28f91c21e4896a2028df40b
content_type: application/pdf
creator: dernst
date_created: 2020-09-22T09:51:28Z
date_updated: 2020-09-22T09:51:28Z
file_id: '8555'
file_name: 2020_CurrentBiology_Tan.pdf
file_size: 5360135
relation: main_file
success: 1
file_date_updated: 2020-09-22T09:51:28Z
fulldoi: https://doi.org/10.1016/j.cub.2019.11.058
has_accepted_license: '1'
intvolume: ' 30'
isi: 1
issue: '3'
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
page: 381-395.e8
pmid: 1
project:
- _id: 261099A6-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '742985'
name: Tracing Evolution of Auxin Transport and Polarity in Plants
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
- _id: 256FEF10-B435-11E9-9278-68D0E5697425
grant_number: 723-2015
name: Molecular Mechanism underlying Salicylic Acid Regulation of Endocytic Trafficking
in Arabidopsis
publication: Current Biology
publication_identifier:
issn:
- '09609822'
publication_status: published
publisher: Cell Press
quality_controlled: '1'
related_material:
record:
- id: '8822'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Salicylic acid targets protein phosphatase 2A to attenuate growth in plants
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: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 30
year: '2020'
...
---
_id: '7500'
abstract:
- lang: eng
text: "Plant survival depends on vascular tissues, which originate in a self‐organizing
manner as strands of cells co‐directionally transporting the plant hormone auxin.
The latter phenomenon (also known as auxin canalization) is classically hypothesized
to be regulated by auxin itself via the effect of this hormone on the polarity
of its own intercellular transport. Correlative observations supported this concept,
but molecular insights remain limited.\r\nIn the current study, we established
an experimental system based on the model Arabidopsis thaliana, which exhibits
auxin transport channels and formation of vasculature strands in response to local
auxin application.\r\nOur methodology permits the genetic analysis of auxin canalization
under controllable experimental conditions. By utilizing this opportunity, we
confirmed the dependence of auxin canalization on a PIN‐dependent auxin transport
and nuclear, TIR1/AFB‐mediated auxin signaling. We also show that leaf venation
and auxin‐mediated PIN repolarization in the root require TIR1/AFB signaling.\r\nFurther
studies based on this experimental system are likely to yield better understanding
of the mechanisms underlying auxin transport polarization in other developmental
contexts."
acknowledgement: We thank Mark Estelle, José M. Alonso and the Arabidopsis Stock Centre
for providing seeds. We acknowledge the core facility CELLIM of CEITEC supported
by the MEYS CR (LM2015062 Czech‐BioImaging) and Plant Sciences Core Facility of
CEITEC Masaryk University for help in generating essential data. This project received
funding from the European Research Council (ERC) under the European Union's Horizon
2020 research and innovation program (grant agreement no. 742985) and the Czech
Science Foundation GAČR (GA13‐40637S and GA18‐26981S) to JF. JH is the recipient
of a DOC Fellowship of the Austrian Academy of Sciences at the Institute of Science
and Technology. The authors declare no competing interests.
article_processing_charge: No
article_type: original
author:
- first_name: E
full_name: Mazur, E
last_name: Mazur
- first_name: Ivan
full_name: Kulik, Ivan
id: F0AB3FCE-02D1-11E9-BD0E-99399A5D3DEB
last_name: Kulik
- first_name: Jakub
full_name: Hajny, Jakub
id: 4800CC20-F248-11E8-B48F-1D18A9856A87
last_name: Hajny
orcid: 0000-0003-2140-7195
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
citation:
ama: Mazur E, Kulik I, Hajny J, Friml J. Auxin canalization and vascular tissue
formation by TIR1/AFB-mediated auxin signaling in arabidopsis. New Phytologist.
2020;226(5):1375-1383. doi:10.1111/nph.16446
apa: Mazur, E., Kulik, I., Hajny, J., & Friml, J. (2020). Auxin canalization
and vascular tissue formation by TIR1/AFB-mediated auxin signaling in arabidopsis.
New Phytologist. Wiley. https://doi.org/10.1111/nph.16446
chicago: Mazur, E, Ivan Kulik, Jakub Hajny, and Jiří Friml. “Auxin Canalization
and Vascular Tissue Formation by TIR1/AFB-Mediated Auxin Signaling in Arabidopsis.”
New Phytologist. Wiley, 2020. https://doi.org/10.1111/nph.16446.
ieee: E. Mazur, I. Kulik, J. Hajny, and J. Friml, “Auxin canalization and vascular
tissue formation by TIR1/AFB-mediated auxin signaling in arabidopsis,” New
Phytologist, vol. 226, no. 5. Wiley, pp. 1375–1383, 2020.
ista: Mazur E, Kulik I, Hajny J, Friml J. 2020. Auxin canalization and vascular
tissue formation by TIR1/AFB-mediated auxin signaling in arabidopsis. New Phytologist.
226(5), 1375–1383.
mla: Mazur, E., et al. “Auxin Canalization and Vascular Tissue Formation by TIR1/AFB-Mediated
Auxin Signaling in Arabidopsis.” New Phytologist, vol. 226, no. 5, Wiley,
2020, pp. 1375–83, doi:10.1111/nph.16446.
short: E. Mazur, I. Kulik, J. Hajny, J. Friml, New Phytologist 226 (2020) 1375–1383.
corr_author: '1'
date_created: 2020-02-18T10:03:47Z
date_published: 2020-06-01T00:00:00Z
date_updated: 2026-10-18T22:30:48Z
day: '01'
ddc:
- '580'
department:
- _id: JiFr
doi: 10.1111/nph.16446
ec_funded: 1
external_id:
isi:
- '000514939700001'
pmid:
- '31971254'
file:
- access_level: open_access
checksum: 17de728b0205979feb95ce663ba918c2
content_type: application/pdf
creator: dernst
date_created: 2020-11-20T09:32:10Z
date_updated: 2020-11-20T09:32:10Z
file_id: '8781'
file_name: 2020_NewPhytologist_Mazur.pdf
file_size: 2106888
relation: main_file
success: 1
file_date_updated: 2020-11-20T09:32:10Z
fulldoi: https://doi.org/10.1111/nph.16446
has_accepted_license: '1'
intvolume: ' 226'
isi: 1
issue: '5'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: 1375-1383
pmid: 1
project:
- _id: 261099A6-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '742985'
name: Tracing Evolution of Auxin Transport and Polarity in Plants
- _id: 2699E3D2-B435-11E9-9278-68D0E5697425
grant_number: '25239'
name: Cell surface receptor complexes for PIN polarity and auxin-mediated development
publication: New Phytologist
publication_identifier:
eissn:
- 1469-8137
issn:
- 0028-646x
publication_status: published
publisher: Wiley
quality_controlled: '1'
related_material:
record:
- id: '8822'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Auxin canalization and vascular tissue formation by TIR1/AFB-mediated auxin
signaling in arabidopsis
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: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 226
year: '2020'
...
---
_id: '7652'
abstract:
- lang: eng
text: Organisms cope with change by taking advantage of transcriptional regulators.
However, when faced with rare environments, the evolution of transcriptional regulators
and their promoters may be too slow. Here, we investigate whether the intrinsic
instability of gene duplication and amplification provides a generic alternative
to canonical gene regulation. Using real-time monitoring of gene-copy-number mutations
in Escherichia coli, we show that gene duplications and amplifications enable
adaptation to fluctuating environments by rapidly generating copy-number and,
therefore, expression-level polymorphisms. This amplification-mediated gene expression
tuning (AMGET) occurs on timescales that are similar to canonical gene regulation
and can respond to rapid environmental changes. Mathematical modelling shows that
amplifications also tune gene expression in stochastic environments in which transcription-factor-based
schemes are hard to evolve or maintain. The fleeting nature of gene amplifications
gives rise to a generic population-level mechanism that relies on genetic heterogeneity
to rapidly tune the expression of any gene, without leaving any genomic signature.
acknowledgement: We thank L. Hurst, N. Barton, M. Pleska, M. Steinrück, B. Kavcic
and A. Staron for input on the manuscript, and To. Bergmiller and R. Chait for help
with microfluidics experiments. I.T. is a recipient the OMV fellowship. R.G. is
a recipient of a DOC (Doctoral Fellowship Programme of the Austrian Academy of Sciences)
Fellowship of the Austrian Academy of Sciences.
article_processing_charge: No
article_type: original
author:
- first_name: Isabella
full_name: Tomanek, Isabella
id: 3981F020-F248-11E8-B48F-1D18A9856A87
last_name: Tomanek
orcid: 0000-0001-6197-363X
- first_name: Rok
full_name: Grah, Rok
id: 483E70DE-F248-11E8-B48F-1D18A9856A87
last_name: Grah
orcid: 0000-0003-2539-3560
- first_name: M.
full_name: Lagator, M.
last_name: Lagator
- first_name: A. M. C.
full_name: Andersson, A. M. C.
last_name: Andersson
- first_name: Jonathan P
full_name: Bollback, Jonathan P
id: 2C6FA9CC-F248-11E8-B48F-1D18A9856A87
last_name: Bollback
orcid: 0000-0002-4624-4612
- first_name: Gašper
full_name: Tkačik, Gašper
id: 3D494DCA-F248-11E8-B48F-1D18A9856A87
last_name: Tkačik
orcid: 0000-0002-6699-1455
- first_name: Calin C
full_name: Guet, Calin C
id: 47F8433E-F248-11E8-B48F-1D18A9856A87
last_name: Guet
orcid: 0000-0001-6220-2052
citation:
ama: Tomanek I, Grah R, Lagator M, et al. Gene amplification as a form of population-level
gene expression regulation. Nature Ecology & Evolution. 2020;4(4):612-625.
doi:10.1038/s41559-020-1132-7
apa: Tomanek, I., Grah, R., Lagator, M., Andersson, A. M. C., Bollback, J. P., Tkačik,
G., & Guet, C. C. (2020). Gene amplification as a form of population-level
gene expression regulation. Nature Ecology & Evolution. Springer Nature.
https://doi.org/10.1038/s41559-020-1132-7
chicago: Tomanek, Isabella, Rok Grah, M. Lagator, A. M. C. Andersson, Jonathan P
Bollback, Gašper Tkačik, and Calin C Guet. “Gene Amplification as a Form of Population-Level
Gene Expression Regulation.” Nature Ecology & Evolution. Springer Nature,
2020. https://doi.org/10.1038/s41559-020-1132-7.
ieee: I. Tomanek et al., “Gene amplification as a form of population-level
gene expression regulation,” Nature Ecology & Evolution, vol. 4, no.
4. Springer Nature, pp. 612–625, 2020.
ista: Tomanek I, Grah R, Lagator M, Andersson AMC, Bollback JP, Tkačik G, Guet CC.
2020. Gene amplification as a form of population-level gene expression regulation.
Nature Ecology & Evolution. 4(4), 612–625.
mla: Tomanek, Isabella, et al. “Gene Amplification as a Form of Population-Level
Gene Expression Regulation.” Nature Ecology & Evolution, vol. 4, no.
4, Springer Nature, 2020, pp. 612–25, doi:10.1038/s41559-020-1132-7.
short: I. Tomanek, R. Grah, M. Lagator, A.M.C. Andersson, J.P. Bollback, G. Tkačik,
C.C. Guet, Nature Ecology & Evolution 4 (2020) 612–625.
date_created: 2020-04-08T15:20:53Z
date_published: 2020-04-01T00:00:00Z
date_updated: 2026-10-18T22:30:48Z
day: '01'
ddc:
- '570'
department:
- _id: GaTk
- _id: CaGu
doi: 10.1038/s41559-020-1132-7
external_id:
isi:
- '000519008300005'
pmid:
- '32152532'
file:
- access_level: open_access
checksum: ef3bbf42023e30b2c24a6278025d2040
content_type: application/pdf
creator: dernst
date_created: 2020-10-09T09:56:01Z
date_updated: 2020-10-09T09:56:01Z
file_id: '8640'
file_name: 2020_NatureEcolEvo_Tomanek.pdf
file_size: 745242
relation: main_file
success: 1
file_date_updated: 2020-10-09T09:56:01Z
fulldoi: https://doi.org/10.1038/s41559-020-1132-7
has_accepted_license: '1'
intvolume: ' 4'
isi: 1
issue: '4'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Submitted Version
page: 612-625
pmid: 1
project:
- _id: 267C84F4-B435-11E9-9278-68D0E5697425
name: Biophysically realistic genotype-phenotype maps for regulatory networks
publication: Nature Ecology & Evolution
publication_identifier:
issn:
- 2397-334X
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/how-to-thrive-without-gene-regulation/
record:
- id: '7016'
relation: research_data
status: public
- id: '7383'
relation: research_data
status: public
- id: '8155'
relation: dissertation_contains
status: public
- id: '8653'
relation: used_in_publication
status: public
scopus_import: '1'
status: public
title: Gene amplification as a form of population-level gene expression regulation
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 4
year: '2020'
...
---
OA_place: publisher
_id: '8822'
abstract:
- lang: eng
text: "Self-organization is a hallmark of plant development manifested e.g. by intricate
leaf vein patterns, flexible formation of vasculature during organogenesis or
its regeneration following wounding. Spontaneously arising channels transporting
the phytohormone auxin, created by coordinated polar localizations of PIN-FORMED
1 (PIN1) auxin exporter, provide positional cues for these as well as other plant
patterning processes. To find regulators acting downstream of auxin and the TIR1/AFB
auxin signaling pathway essential for PIN1 coordinated polarization during auxin
canalization, we performed microarray experiments. Besides the known components
of general PIN polarity maintenance, such as PID and PIP5K kinases, we identified
and characterized a new regulator of auxin canalization, the transcription factor
WRKY DNA-BINDING PROTEIN 23 (WRKY23).\r\nNext, we designed a subsequent microarray
experiment to further uncover other molecular players, downstream of auxin-TIR1/AFB-WRKY23
involved in the regulation of auxin-mediated PIN repolarization. We identified
a novel and crucial part of the molecular machinery underlying auxin canalization.
The auxin-regulated malectin-type receptor-like kinase CAMEL and the associated
leucine-rich repeat receptor-like kinase CANAR target and directly phosphorylate
PIN auxin transporters. camel and canar mutants are impaired in PIN1 subcellular
trafficking and auxin-mediated repolarization leading to defects in auxin transport,
ultimately to leaf venation and vasculature regeneration defects. Our results
describe the CAMEL-CANAR receptor complex, which is required for auxin feed-back
on its own transport and thus for coordinated tissue polarization during auxin
canalization."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Jakub
full_name: Hajny, Jakub
id: 4800CC20-F248-11E8-B48F-1D18A9856A87
last_name: Hajny
orcid: 0000-0003-2140-7195
citation:
ama: Hajny J. Identification and characterization of the molecular machinery of
auxin-dependent canalization during vasculature formation and regeneration. 2020.
doi:10.15479/AT:ISTA:8822
apa: Hajny, J. (2020). Identification and characterization of the molecular machinery
of auxin-dependent canalization during vasculature formation and regeneration.
Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8822
chicago: Hajny, Jakub. “Identification and Characterization of the Molecular Machinery
of Auxin-Dependent Canalization during Vasculature Formation and Regeneration.”
Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:8822.
ieee: J. Hajny, “Identification and characterization of the molecular machinery
of auxin-dependent canalization during vasculature formation and regeneration,”
Institute of Science and Technology Austria, 2020.
ista: Hajny J. 2020. Identification and characterization of the molecular machinery
of auxin-dependent canalization during vasculature formation and regeneration.
Institute of Science and Technology Austria.
mla: Hajny, Jakub. Identification and Characterization of the Molecular Machinery
of Auxin-Dependent Canalization during Vasculature Formation and Regeneration.
Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8822.
short: J. Hajny, Identification and Characterization of the Molecular Machinery
of Auxin-Dependent Canalization during Vasculature Formation and Regeneration,
Institute of Science and Technology Austria, 2020.
corr_author: '1'
date_created: 2020-12-01T12:38:18Z
date_published: 2020-12-01T00:00:00Z
date_updated: 2026-06-18T19:02:05Z
day: '01'
ddc:
- '580'
degree_awarded: PhD
department:
- _id: JiFr
doi: 10.15479/AT:ISTA:8822
file:
- access_level: closed
checksum: 210a9675af5e4c78b0b56d920ac82866
content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
creator: jhajny
date_created: 2020-12-04T07:27:52Z
date_updated: 2021-07-16T22:30:03Z
embargo_to: open_access
file_id: '8919'
file_name: Jakub Hajný IST Austria final_JH.docx
file_size: 91279806
relation: source_file
- access_level: open_access
checksum: 1781385b4aa73eba89cc76c6172f71d2
content_type: application/pdf
creator: jhajny
date_created: 2020-12-09T15:04:41Z
date_updated: 2021-12-08T23:30:03Z
embargo: 2021-12-07
file_id: '8933'
file_name: Jakub Hajný IST Austria final_JH-merged without Science.pdf
file_size: 68707697
relation: main_file
file_date_updated: 2021-12-08T23:30:03Z
fulldoi: https://doi.org/10.15479/AT:ISTA:8822
has_accepted_license: '1'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
page: '249'
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '449'
relation: part_of_dissertation
status: public
- id: '7500'
relation: part_of_dissertation
status: public
- id: '7427'
relation: part_of_dissertation
status: public
- id: '191'
relation: part_of_dissertation
status: public
- id: '6260'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Jiří
full_name: Friml, Jiří
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
title: Identification and characterization of the molecular machinery of auxin-dependent
canalization during vasculature formation and regeneration
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2020'
...
---
OA_place: publisher
_id: '8653'
abstract:
- lang: eng
text: "Mutations are the raw material of evolution and come in many different flavors.
Point mutations change a single letter in the DNA sequence, while copy number
mutations like duplications or deletions add or remove many letters of the DNA
sequence simultaneously. Each type of mutation exhibits specific properties like
its rate of formation and reversal. \r\nGene expression is a fundamental phenotype
that can be altered by both, point and copy number mutations. The following thesis
is concerned with the dynamics of gene expression evolution and how it is affected
by the properties exhibited by point and copy number mutations. Specifically,
we are considering i) copy number mutations during adaptation to fluctuating environments
and ii) the interaction of copy number and point mutations during adaptation to
constant environments. "
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Isabella
full_name: Tomanek, Isabella
id: 3981F020-F248-11E8-B48F-1D18A9856A87
last_name: Tomanek
orcid: 0000-0001-6197-363X
citation:
ama: Tomanek I. The evolution of gene expression by copy number and point mutations.
2020. doi:10.15479/AT:ISTA:8653
apa: Tomanek, I. (2020). The evolution of gene expression by copy number and
point mutations. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8653
chicago: Tomanek, Isabella. “The Evolution of Gene Expression by Copy Number and
Point Mutations.” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:8653.
ieee: I. Tomanek, “The evolution of gene expression by copy number and point mutations,”
Institute of Science and Technology Austria, 2020.
ista: Tomanek I. 2020. The evolution of gene expression by copy number and point
mutations. Institute of Science and Technology Austria.
mla: Tomanek, Isabella. The Evolution of Gene Expression by Copy Number and Point
Mutations. Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8653.
short: I. Tomanek, The Evolution of Gene Expression by Copy Number and Point Mutations,
Institute of Science and Technology Austria, 2020.
corr_author: '1'
date_created: 2020-10-13T13:02:33Z
date_published: 2020-10-13T00:00:00Z
date_updated: 2026-04-08T07:29:19Z
day: '13'
ddc:
- '576'
degree_awarded: PhD
department:
- _id: CaGu
doi: 10.15479/AT:ISTA:8653
file:
- access_level: closed
checksum: c01d9f59794b4b70528f37637c17ad02
content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
creator: itomanek
date_created: 2020-10-16T12:14:21Z
date_updated: 2021-10-20T22:30:03Z
embargo_to: open_access
file_id: '8666'
file_name: Thesis_ITomanek_final_201016.docx
file_size: 25131884
relation: source_file
- access_level: open_access
checksum: f8edbc3b0f81a780e13ca1e561d42d8b
content_type: application/pdf
creator: itomanek
date_created: 2020-10-16T12:14:21Z
date_updated: 2021-10-20T22:30:03Z
embargo: 2021-10-19
file_id: '8667'
file_name: Thesis_ITomanek_final_201016.pdf
file_size: 15405675
relation: main_file
file_date_updated: 2021-10-20T22:30:03Z
fulldoi: https://doi.org/10.15479/AT:ISTA:8653
has_accepted_license: '1'
keyword:
- duplication
- amplification
- promoter
- CNV
- AMGET
- experimental evolution
- Escherichia coli
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: '117'
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '7652'
relation: research_data
status: public
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: The evolution of gene expression by copy number and point mutations
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2020'
...
---
OA_place: publisher
_id: '8657'
abstract:
- lang: eng
text: "Synthesis of proteins – translation – is a fundamental process of life. Quantitative
studies anchor translation into the context of bacterial physiology and reveal
several mathematical relationships, called “growth laws,” which capture physiological
feedbacks between protein synthesis and cell growth. Growth laws describe the
dependency of the ribosome abundance as a function of growth rate, which can change
depending on the growth conditions. Perturbations of translation reveal that bacteria
employ a compensatory strategy in which the reduced translation capability results
in increased expression of the translation machinery.\r\nPerturbations of translation
are achieved in various ways; clinically interesting is the application of translation-targeting
antibiotics – translation inhibitors. The antibiotic effects on bacterial physiology
are often poorly understood. Bacterial responses to two or more simultaneously
applied antibiotics are even more puzzling. The combined antibiotic effect determines
the type of drug interaction, which ranges from synergy (the effect is stronger
than expected) to antagonism (the effect is weaker) and suppression (one of the
drugs loses its potency).\r\nIn the first part of this work, we systematically
measure the pairwise interaction network for translation inhibitors that interfere
with different steps in translation. We find that the interactions are surprisingly
diverse and tend to be more antagonistic. To explore the underlying mechanisms,
we begin with a minimal biophysical model of combined antibiotic action. We base
this model on the kinetics of antibiotic uptake and binding together with the
physiological response described by the growth laws. The biophysical model explains
some drug interactions, but not all; it specifically fails to predict suppression.\r\nIn
the second part of this work, we hypothesize that elusive suppressive drug interactions
result from the interplay between ribosomes halted in different stages of translation.
To elucidate this putative mechanism of drug interactions between translation
inhibitors, we generate translation bottlenecks genetically using in- ducible
control of translation factors that regulate well-defined translation cycle steps.
These perturbations accurately mimic antibiotic action and drug interactions,
supporting that the interplay of different translation bottlenecks partially causes
these interactions.\r\nWe extend this approach by varying two translation bottlenecks
simultaneously. This approach reveals the suppression of translocation inhibition
by inhibited translation. We rationalize this effect by modeling dense traffic
of ribosomes that move on transcripts in a translation factor-mediated manner.
This model predicts a dissolution of traffic jams caused by inhibited translocation
when the density of ribosome traffic is reduced by lowered initiation. We base
this model on the growth laws and quantitative relationships between different
translation and growth parameters.\r\nIn the final part of this work, we describe
a set of tools aimed at quantification of physiological and translation parameters.
We further develop a simple model that directly connects the abundance of a translation
factor with the growth rate, which allows us to extract physiological parameters
describing initiation. We demonstrate the development of tools for measuring translation
rate.\r\nThis thesis showcases how a combination of high-throughput growth rate
mea- surements, genetics, and modeling can reveal mechanisms of drug interactions.
Furthermore, by a gradual transition from combinations of antibiotics to precise
genetic interventions, we demonstrated the equivalency between genetic and chemi-
cal perturbations of translation. These findings tile the path for quantitative
studies of antibiotic combinations and illustrate future approaches towards the
quantitative description of translation."
acknowledged_ssus:
- _id: LifeSc
- _id: M-Shop
acknowledgement: I thank Life Science Facilities for their continuous support with
providing top-notch laboratory materials, keeping the devices humming, and coordinating
the repairs and building of custom-designed laboratory equipment with the MIBA Machine
shop.
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Bor
full_name: Kavcic, Bor
id: 350F91D2-F248-11E8-B48F-1D18A9856A87
last_name: Kavcic
orcid: 0000-0001-6041-254X
citation:
ama: 'Kavcic B. Perturbations of protein synthesis: from antibiotics to genetics
and physiology. 2020. doi:10.15479/AT:ISTA:8657'
apa: 'Kavcic, B. (2020). Perturbations of protein synthesis: from antibiotics
to genetics and physiology. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8657'
chicago: 'Kavcic, Bor. “Perturbations of Protein Synthesis: From Antibiotics to
Genetics and Physiology.” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:8657.'
ieee: 'B. Kavcic, “Perturbations of protein synthesis: from antibiotics to genetics
and physiology,” Institute of Science and Technology Austria, 2020.'
ista: 'Kavcic B. 2020. Perturbations of protein synthesis: from antibiotics to genetics
and physiology. Institute of Science and Technology Austria.'
mla: 'Kavcic, Bor. Perturbations of Protein Synthesis: From Antibiotics to Genetics
and Physiology. Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8657.'
short: 'B. Kavcic, Perturbations of Protein Synthesis: From Antibiotics to Genetics
and Physiology, Institute of Science and Technology Austria, 2020.'
corr_author: '1'
date_created: 2020-10-13T16:46:14Z
date_published: 2020-10-14T00:00:00Z
date_updated: 2026-07-06T12:44:35Z
day: '14'
ddc:
- '571'
- '530'
- '570'
degree_awarded: PhD
department:
- _id: GaTk
doi: 10.15479/AT:ISTA:8657
file:
- access_level: open_access
checksum: d708ecd62b6fcc3bc1feb483b8dbe9eb
content_type: application/pdf
creator: bkavcic
date_created: 2020-10-15T06:41:20Z
date_updated: 2021-10-07T22:30:03Z
embargo: 2021-10-06
file_id: '8663'
file_name: kavcicB_thesis202009.pdf
file_size: 52636162
relation: main_file
- access_level: closed
checksum: bb35f2352a04db19164da609f00501f3
content_type: application/zip
creator: bkavcic
date_created: 2020-10-15T06:41:53Z
date_updated: 2021-10-07T22:30:03Z
embargo_to: open_access
file_id: '8664'
file_name: 2020b.zip
file_size: 321681247
relation: source_file
file_date_updated: 2021-10-07T22:30:03Z
fulldoi: https://doi.org/10.15479/AT:ISTA:8657
has_accepted_license: '1'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: '271'
publication_identifier:
isbn:
- 978-3-99078-011-4
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '8250'
relation: part_of_dissertation
status: public
- id: '7673'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Gašper
full_name: Tkačik, Gašper
id: 3D494DCA-F248-11E8-B48F-1D18A9856A87
last_name: Tkačik
orcid: 0000-0002-6699-1455
- first_name: Mark Tobias
full_name: Bollenbach, Mark Tobias
id: 3E6DB97A-F248-11E8-B48F-1D18A9856A87
last_name: Bollenbach
orcid: 0000-0003-4398-476X
title: 'Perturbations of protein synthesis: from antibiotics to genetics and physiology'
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2020'
...
---
_id: '8250'
abstract:
- lang: eng
text: 'Antibiotics that interfere with translation, when combined, interact in diverse
and difficult-to-predict ways. Here, we explain these interactions by “translation
bottlenecks”: points in the translation cycle where antibiotics block ribosomal
progression. To elucidate the underlying mechanisms of drug interactions between
translation inhibitors, we generate translation bottlenecks genetically using
inducible control of translation factors that regulate well-defined translation
cycle steps. These perturbations accurately mimic antibiotic action and drug interactions,
supporting that the interplay of different translation bottlenecks causes these
interactions. We further show that growth laws, combined with drug uptake and
binding kinetics, enable the direct prediction of a large fraction of observed
interactions, yet fail to predict suppression. However, varying two translation
bottlenecks simultaneously supports that dense traffic of ribosomes and competition
for translation factors account for the previously unexplained suppression. These
results highlight the importance of “continuous epistasis” in bacterial physiology.'
acknowledgement: "We thank M. Hennessey-Wesen, I. Tomanek, K. Jain, A. Staron, K.
Tomasek, M. Scott,\r\nK.C. Huang, and Z. Gitai for reading the manuscript and constructive
comments. B.K. is\r\nindebted to C. Guet for additional guidance and generous support,
which rendered this\r\nwork possible. B.K. thanks all members of Guet group for
many helpful discussions and\r\nsharing of resources. B.K. additionally acknowledges
the tremendous support from A.\r\nAngermayr and K. Mitosch with experimental work.
We further thank E. Brown for\r\nhelpful comments regarding lamotrigine, and A.
Buskirk for valuable suggestions\r\nregarding the ribosome footprint size. This
work was supported in part by Austrian\r\nScience Fund (FWF) standalone grants P
27201-B22 (to T.B.) and P 28844 (to G.T.),\r\nHFSP program Grant RGP0042/2013 (to
T.B.), German Research Foundation (DFG)\r\nstandalone grant BO 3502/2-1 (to T.B.),
and German Research Foundation (DFG)\r\nCollaborative Research Centre (SFB) 1310
(to T.B.). Open access funding provided by\r\nProjekt DEAL."
article_number: '4013'
article_processing_charge: No
article_type: original
author:
- first_name: Bor
full_name: Kavcic, Bor
id: 350F91D2-F248-11E8-B48F-1D18A9856A87
last_name: Kavcic
orcid: 0000-0001-6041-254X
- first_name: Gašper
full_name: Tkačik, Gašper
id: 3D494DCA-F248-11E8-B48F-1D18A9856A87
last_name: Tkačik
orcid: 0000-0002-6699-1455
- first_name: Tobias
full_name: Bollenbach, Tobias
id: 3E6DB97A-F248-11E8-B48F-1D18A9856A87
last_name: Bollenbach
orcid: 0000-0003-4398-476X
citation:
ama: Kavcic B, Tkačik G, Bollenbach MT. Mechanisms of drug interactions between
translation-inhibiting antibiotics. Nature Communications. 2020;11. doi:10.1038/s41467-020-17734-z
apa: Kavcic, B., Tkačik, G., & Bollenbach, M. T. (2020). Mechanisms of drug
interactions between translation-inhibiting antibiotics. Nature Communications.
Springer Nature. https://doi.org/10.1038/s41467-020-17734-z
chicago: Kavcic, Bor, Gašper Tkačik, and Mark Tobias Bollenbach. “Mechanisms of
Drug Interactions between Translation-Inhibiting Antibiotics.” Nature Communications.
Springer Nature, 2020. https://doi.org/10.1038/s41467-020-17734-z.
ieee: B. Kavcic, G. Tkačik, and M. T. Bollenbach, “Mechanisms of drug interactions
between translation-inhibiting antibiotics,” Nature Communications, vol.
11. Springer Nature, 2020.
ista: Kavcic B, Tkačik G, Bollenbach MT. 2020. Mechanisms of drug interactions between
translation-inhibiting antibiotics. Nature Communications. 11, 4013.
mla: Kavcic, Bor, et al. “Mechanisms of Drug Interactions between Translation-Inhibiting
Antibiotics.” Nature Communications, vol. 11, 4013, Springer Nature, 2020,
doi:10.1038/s41467-020-17734-z.
short: B. Kavcic, G. Tkačik, M.T. Bollenbach, Nature Communications 11 (2020).
date_created: 2020-08-12T09:13:50Z
date_published: 2020-08-11T00:00:00Z
date_updated: 2026-10-18T22:30:49Z
day: '11'
ddc:
- '570'
department:
- _id: GaTk
doi: 10.1038/s41467-020-17734-z
external_id:
isi:
- '000562769300008'
pmid:
- '32782250'
file:
- access_level: open_access
checksum: 986bebb308850a55850028d3d2b5b664
content_type: application/pdf
creator: dernst
date_created: 2020-08-17T07:36:57Z
date_updated: 2020-08-17T07:36:57Z
file_id: '8275'
file_name: 2020_NatureComm_Kavcic.pdf
file_size: 1965672
relation: main_file
success: 1
file_date_updated: 2020-08-17T07:36:57Z
fulldoi: https://doi.org/10.1038/s41467-020-17734-z
has_accepted_license: '1'
intvolume: ' 11'
isi: 1
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 25E9AF9E-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P27201-B22
name: Revealing the mechanisms underlying drug interactions
- _id: 254E9036-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P28844-B27
name: Biophysics of information processing in gene regulation
publication: Nature Communications
publication_identifier:
issn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
record:
- id: '8657'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Mechanisms of drug interactions between translation-inhibiting antibiotics
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: 11
year: '2020'
...
---
_id: '7673'
abstract:
- lang: eng
text: Combining drugs can improve the efficacy of treatments. However, predicting
the effect of drug combinations is still challenging. The combined potency of
drugs determines the drug interaction, which is classified as synergistic, additive,
antagonistic, or suppressive. While probabilistic, non-mechanistic models exist,
there is currently no biophysical model that can predict antibiotic interactions.
Here, we present a physiologically relevant model of the combined action of antibiotics
that inhibit protein synthesis by targeting the ribosome. This model captures
the kinetics of antibiotic binding and transport, and uses bacterial growth laws
to predict growth in the presence of antibiotic combinations. We find that this
biophysical model can produce all drug interaction types except suppression. We
show analytically that antibiotics which cannot bind to the ribosome simultaneously
generally act as substitutes for one another, leading to additive drug interactions.
Previously proposed null expectations for higher-order drug interactions follow
as a limiting case of our model. We further extend the model to include the effects
of direct physical or allosteric interactions between individual drugs on the
ribosome. Notably, such direct interactions profoundly change the combined drug
effect, depending on the kinetic parameters of the drugs used. The model makes
additional predictions for the effects of resistance genes on drug interactions
and for interactions between ribosome-targeting antibiotics and antibiotics with
other targets. These findings enhance our understanding of the interplay between
drug action and cell physiology and are a key step toward a general framework
for predicting drug interactions.
article_processing_charge: No
author:
- first_name: Bor
full_name: Kavcic, Bor
id: 350F91D2-F248-11E8-B48F-1D18A9856A87
last_name: Kavcic
orcid: 0000-0001-6041-254X
- first_name: Gašper
full_name: Tkačik, Gašper
id: 3D494DCA-F248-11E8-B48F-1D18A9856A87
last_name: Tkačik
orcid: 0000-0002-6699-1455
- first_name: Tobias
full_name: Bollenbach, Tobias
id: 3E6DB97A-F248-11E8-B48F-1D18A9856A87
last_name: Bollenbach
orcid: 0000-0003-4398-476X
citation:
ama: Kavcic B, Tkačik G, Bollenbach MT. A minimal biophysical model of combined
antibiotic action. bioRxiv. 2020. doi:10.1101/2020.04.18.047886
apa: Kavcic, B., Tkačik, G., & Bollenbach, M. T. (2020). A minimal biophysical
model of combined antibiotic action. bioRxiv. https://doi.org/10.1101/2020.04.18.047886
chicago: Kavcic, Bor, Gašper Tkačik, and Mark Tobias Bollenbach. “A Minimal Biophysical
Model of Combined Antibiotic Action.” BioRxiv, 2020. https://doi.org/10.1101/2020.04.18.047886.
ieee: B. Kavcic, G. Tkačik, and M. T. Bollenbach, “A minimal biophysical model of
combined antibiotic action,” bioRxiv. 2020.
ista: Kavcic B, Tkačik G, Bollenbach MT. 2020. A minimal biophysical model of combined
antibiotic action. bioRxiv, 10.1101/2020.04.18.047886.
mla: Kavcic, Bor, et al. “A Minimal Biophysical Model of Combined Antibiotic Action.”
BioRxiv, 2020, doi:10.1101/2020.04.18.047886.
short: B. Kavcic, G. Tkačik, M.T. Bollenbach, BioRxiv (2020).
das_tickbox: '1'
date_created: 2020-04-22T08:27:56Z
date_published: 2020-04-18T00:00:00Z
date_updated: 2026-10-18T22:30:49Z
day: '18'
department:
- _id: GaTk
doi: 10.1101/2020.04.18.047886
fulldoi: https://doi.org/10.1101/2020.04.18.047886
language:
- iso: eng
main_file_link:
- open_access: '1'
url: 'https://doi.org/10.1101/2020.04.18.047886 '
month: '04'
oa: 1
oa_version: Preprint
project:
- _id: 25E9AF9E-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P27201-B22
name: Revealing the mechanisms underlying drug interactions
- _id: 254E9036-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P28844-B27
name: Biophysics of information processing in gene regulation
publication: bioRxiv
publication_status: published
related_material:
record:
- id: '8997'
relation: later_version
status: public
- id: '8657'
relation: dissertation_contains
status: public
status: public
title: A minimal biophysical model of combined antibiotic action
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2020'
...