[{"intvolume":"       188","acknowledgement":"We gratefully acknowledge Tongda Xu for experimental, material, and conceptual support. We thank William Gray for providing material, Nataliia Gnyliukh and Ema Cervenova for help with manuscript preparation, and Julia Schmid for help with cloning. We thank Dolf Weijers, Mark Roosjen, and Andre Kuhn for discussions and support with phospho-proteomic analyses. We thank the Bioimaging and Life Science facilities at the Institute of Science and Technology Austria (ISTA) for their excellent service and assistance. The research leading to these results has received funding from the European Union (ERC, CYNIPS, 101142681) and Austrian Science Fund (FWF; I 6123-B) to J.F., and Y.J. was funded by ERC no. 3363360-APPL under FP/2007-2013. L.R. was supported by the FP7-PEOPLE-2011-COFUND ISTFELLOW program (IC1023FELL01) and the European Molecular Biology Organization (EMBO) long-term postdoctoral fellowship (ALTF 985-2016). S.T. was supported by the National Natural Science Foundation of China (32321001, 32570366). The work of J.H. was supported by the project JG_2024_003 implemented within the Palacký University Young Researcher Grant.","file_date_updated":"2025-11-24T10:55:18Z","abstract":[{"lang":"eng","text":"Phytohormone auxin and its directional transport mediate much of the remarkably plastic development of higher plants. Positive feedback between auxin signaling and transport is a prerequisite for (1) self-organizing processes, including vascular tissue formation, and (2) directional growth responses such as gravitropism. Here, we identify a mechanism by which auxin signaling directly targets PIN auxin transporters. Via the cell-surface AUXIN-BINDING PROTEIN1 (ABP1)-TRANSMEMBRANE KINASE 1 (TMK1) receptor module, auxin rapidly induces phosphorylation and thus stabilization of PIN2. Following gravistimulation, initial auxin asymmetry activates autophosphorylation of the TMK1 kinase. This induces TMK1 interaction with and phosphorylation of PIN2, stabilizing PIN2 at the lower root side, thus reinforcing asymmetric auxin flow for root bending. Upstream of TMK1 in this regulation, ABP1 acts redundantly with the root-expressed ABP1-LIKE 3 (ABL3) auxin receptor. Such positive feedback between cell-surface auxin signaling and PIN-mediated polar auxin transport is fundamental for robust root gravitropism and presumably for other self-organizing developmental phenomena."}],"OA_type":"hybrid","month":"10","PlanS_conform":"1","date_updated":"2026-07-06T12:51:13Z","date_published":"2025-10-30T00:00:00Z","tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"quality_controlled":"1","day":"30","oa":1,"status":"public","article_processing_charge":"Yes (via OA deal)","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_created":"2025-11-19T09:44:31Z","_id":"20656","related_material":{"record":[{"id":"19399","relation":"earlier_version","status":"public"}]},"page":"6138-6150.e17","article_type":"original","corr_author":"1","author":[{"full_name":"Rodriguez Solovey, 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ABP1/ABL3-TMK1 cell-surface auxin signaling targets PIN2-mediated auxin fluxes for root gravitropism. Cell. 188(22), 6138–6150.e17.","ieee":"L. Rodriguez Solovey <i>et al.</i>, “ABP1/ABL3-TMK1 cell-surface auxin signaling targets PIN2-mediated auxin fluxes for root gravitropism,” <i>Cell</i>, vol. 188, no. 22. Elsevier, p. 6138–6150.e17, 2025.","ama":"Rodriguez Solovey L, Fiedler L, Zou M, et al. ABP1/ABL3-TMK1 cell-surface auxin signaling targets PIN2-mediated auxin fluxes for root gravitropism. <i>Cell</i>. 2025;188(22):6138-6150.e17. doi:<a href=\"https://doi.org/10.1016/j.cell.2025.08.026\">10.1016/j.cell.2025.08.026</a>","chicago":"Rodriguez Solovey, Lesia, Lukas Fiedler, Minxia Zou, Caterina Giannini, Aline Monzer, Dmitrii Vladimirtsev, Marek Randuch, et al. “ABP1/ABL3-TMK1 Cell-Surface Auxin Signaling Targets PIN2-Mediated Auxin Fluxes for Root Gravitropism.” <i>Cell</i>. Elsevier, 2025. <a href=\"https://doi.org/10.1016/j.cell.2025.08.026\">https://doi.org/10.1016/j.cell.2025.08.026</a>.","short":"L. Rodriguez Solovey, L. Fiedler, M. Zou, C. Giannini, A. Monzer, D. Vladimirtsev, M. Randuch, Y. Yu, Z. Gelová, I. Verstraeten, J. Hajny, M. Chen, S. Tan, L. Hörmayer, L. Li, M.M. Marques-Bueno, Z. Quddoos, G. Molnar, I. Kulich, Y. Jaillais, J. Friml, Cell 188 (2025) 6138–6150.e17.","apa":"Rodriguez Solovey, L., Fiedler, L., Zou, M., Giannini, C., Monzer, A., Vladimirtsev, D., … Friml, J. (2025). ABP1/ABL3-TMK1 cell-surface auxin signaling targets PIN2-mediated auxin fluxes for root gravitropism. <i>Cell</i>. Elsevier. <a href=\"https://doi.org/10.1016/j.cell.2025.08.026\">https://doi.org/10.1016/j.cell.2025.08.026</a>","mla":"Rodriguez Solovey, Lesia, et al. “ABP1/ABL3-TMK1 Cell-Surface Auxin Signaling Targets PIN2-Mediated Auxin Fluxes for Root Gravitropism.” <i>Cell</i>, vol. 188, no. 22, Elsevier, 2025, p. 6138–6150.e17, doi:<a href=\"https://doi.org/10.1016/j.cell.2025.08.026\">10.1016/j.cell.2025.08.026</a>."},"language":[{"iso":"eng"}],"volume":188,"acknowledged_ssus":[{"_id":"Bio"},{"_id":"LifeSc"}],"year":"2025","publisher":"Elsevier","pmid":1,"OA_place":"publisher"},{"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_created":"2025-03-13T08:36:48Z","_id":"19399","related_material":{"record":[{"status":"public","id":"20656","relation":"later_version"},{"status":"public","relation":"dissertation_contains","id":"19395"},{"id":"20364","relation":"dissertation_contains","status":"public"}]},"status":"public","article_processing_charge":"No","type":"preprint","corr_author":"1","author":[{"last_name":"Rodriguez Solovey","full_name":"Rodriguez Solovey, Lesia","orcid":"0000-0002-7244-7237","first_name":"Lesia","id":"3922B506-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Lukas","id":"7c417475-8972-11ed-ae7b-8b674ca26986","full_name":"Fiedler, Lukas","last_name":"Fiedler"},{"full_name":"Zou, Minxia","last_name":"Zou","first_name":"Minxia","id":"5c243f41-03f3-11ec-841c-96faf48a7ef9"},{"last_name":"Giannini","full_name":"Giannini, Caterina","first_name":"Caterina","id":"e3fdddd5-f6e0-11ea-865d-ca99ee6367f4"},{"id":"2DB5D88C-D7B3-11E9-B8FD-7907E6697425","first_name":"Aline","full_name":"Monzer, Aline","last_name":"Monzer"},{"first_name":"Dmitrii","id":"60466724-5355-11ee-ae5a-fa55e8f99c3d","last_name":"Vladimirtsev","full_name":"Vladimirtsev, Dmitrii"},{"id":"6ac4636d-15b2-11ec-abd3-fb8df79972ae","first_name":"Marek","full_name":"Randuch, Marek","last_name":"Randuch"},{"first_name":"Yongfan","last_name":"Yu","full_name":"Yu, Yongfan"},{"id":"0AE74790-0E0B-11E9-ABC7-1ACFE5697425","first_name":"Zuzana","last_name":"Gelová","full_name":"Gelová, Zuzana","orcid":"0000-0003-4783-1752"},{"id":"362BF7FE-F248-11E8-B48F-1D18A9856A87","first_name":"Inge","last_name":"Verstraeten","orcid":"0000-0001-7241-2328","full_name":"Verstraeten, Inge"},{"id":"4800CC20-F248-11E8-B48F-1D18A9856A87","first_name":"Jakub","last_name":"Hajny","full_name":"Hajny, Jakub","orcid":"0000-0003-2140-7195"},{"full_name":"Chen, Meng","last_name":"Chen","first_name":"Meng"},{"first_name":"Shutang","id":"2DE75584-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-0471-8285","full_name":"Tan, Shutang","last_name":"Tan"},{"last_name":"Hörmayer","full_name":"Hörmayer, Lukas","orcid":"0000-0001-8295-2926","first_name":"Lukas","id":"2EEE7A2A-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Li, Lanxin","orcid":"0000-0002-5607-272X","last_name":"Li","first_name":"Lanxin","id":"367EF8FA-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Marques-Bueno","full_name":"Marques-Bueno, Maria Mar","first_name":"Maria Mar"},{"first_name":"Zainab","id":"32ff3c64-04a0-11f0-a50f-d0c45bfac466","last_name":"Quddoos","full_name":"Quddoos, Zainab"},{"first_name":"Gergely","id":"34F1AF46-F248-11E8-B48F-1D18A9856A87","full_name":"Molnar, Gergely","last_name":"Molnar"},{"full_name":"Xu, Tongda","last_name":"Xu","first_name":"Tongda"},{"full_name":"Kulich, Ivan","last_name":"Kulich","id":"57a1567c-8314-11eb-9063-c9ddc3451a54","first_name":"Ivan"},{"last_name":"Jaillais","full_name":"Jaillais, Yvon","first_name":"Yvon"},{"first_name":"Jiří","id":"4159519E-F248-11E8-B48F-1D18A9856A87","full_name":"Friml, Jiří","orcid":"0000-0002-8302-7596","last_name":"Friml"}],"OA_type":"green","acknowledgement":"We thank W. Gray for providing material; N. Gnyliukh and E. Cervenova for help with manuscript preparation; J. Schmid for help with cloning. We thank Dolf Weijers, Mark Roosjen, and Andre Kuhn for discussions and support with phospho-proteomic analyses. We thank the Bioimaging and Life Science facilities at ISTA for their excellent service and assistance. The research leading to these results has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program grant agreement No 742985 and Austrian Science Fund (FWF): I3630-775 B25 to J.F; National Natural Science Foundation of China (Grant 32130010, 31422008), start-up funds from FAFU to T.X., Y.J. was funded by ERC no. 3363360-APPL under FP/2007-2013. L.R. was supported by FP7-PEOPLE-2011-COFUND ISTFELLOW program (IC1023FELL01) and the European Molecular Biology Organization (EMBO) long-term postdoctoral fellowship (ALTF 985- 2016). S.T. was supported by the National Natural Science Foundation of China (32321001).","abstract":[{"lang":"eng","text":"Phytohormone auxin and its directional transport mediate much of the remarkably plastic development of higher plants. Positive feedback between auxin signaling and transport is a key prerequisite for (i) self-organizing processes including vascular tissue formation and (ii) directional growth responses such as gravitropism. Here we identify a mechanism, by which auxin signaling directly targets PIN auxin transporters. Via the cell-surface ABP1-TMK1 receptor module, auxin rapidly induces phosphorylation and thus stabilization of PIN2. Following gravistimulation, initial auxin asymmetry activates autophosphorylation of the TMK1 kinase. This induces TMK1 interaction with and phosphorylation of PIN2, stabilizing PIN2 at the lower root side, thus reinforcing asymmetric auxin flow for root bending. Upstream of TMK1 in this regulation, ABP1 acts redundantly with the root-expressed ABP1-LIKE auxin receptor ABL3. Such positive feedback between cell-surface auxin signaling and PIN-mediated polar auxin transport is fundamental for robust root gravitropism and presumably also for other self-organizing developmental phenomena."}],"date_published":"2025-02-20T00:00:00Z","day":"20","oa":1,"month":"02","date_updated":"2026-10-17T22:31:35Z","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://doi.org/10.1101/2022.11.30.518503","open_access":"1"}],"project":[{"name":"Tracing Evolution of Auxin Transport and Polarity in Plants","call_identifier":"H2020","_id":"261099A6-B435-11E9-9278-68D0E5697425","grant_number":"742985"},{"_id":"26538374-B435-11E9-9278-68D0E5697425","grant_number":"I03630","name":"Molecular mechanisms of endocytic cargo recognition in plants","call_identifier":"FWF"},{"call_identifier":"FP7","name":"International IST Postdoc Fellowship Programme","grant_number":"291734","_id":"25681D80-B435-11E9-9278-68D0E5697425"},{"grant_number":"ALTF 985-2016","_id":"26060676-B435-11E9-9278-68D0E5697425","name":"Cell surface receptor complexes for auxin signaling in plants"}],"fulldoi":"https://doi.org/10.1101/2022.11.30.518503","oa_version":"Published Version","citation":{"ieee":"L. Rodriguez Solovey <i>et al.</i>, “ABP1/ABL3-TMK1 cell-surface auxin signaling directly targets PIN2-mediated auxin fluxes for root gravitropism,” <i>bioRxiv</i>. .","ista":"Rodriguez Solovey L, Fiedler L, Zou M, Giannini C, Monzer A, Vladimirtsev D, Randuch M, Yu Y, Gelová Z, Verstraeten I, Hajny J, Chen M, Tan S, Hörmayer L, Li L, Marques-Bueno MM, Quddoos Z, Molnar G, Xu T, Kulich I, Jaillais Y, Friml J. ABP1/ABL3-TMK1 cell-surface auxin signaling directly targets PIN2-mediated auxin fluxes for root gravitropism. bioRxiv, <a href=\"https://doi.org/10.1101/2022.11.30.518503\">10.1101/2022.11.30.518503</a>.","ama":"Rodriguez Solovey L, Fiedler L, Zou M, et al. ABP1/ABL3-TMK1 cell-surface auxin signaling directly targets PIN2-mediated auxin fluxes for root gravitropism. <i>bioRxiv</i>. doi:<a href=\"https://doi.org/10.1101/2022.11.30.518503\">10.1101/2022.11.30.518503</a>","chicago":"Rodriguez Solovey, Lesia, Lukas Fiedler, Minxia Zou, Caterina Giannini, Aline Monzer, Dmitrii Vladimirtsev, Marek Randuch, et al. “ABP1/ABL3-TMK1 Cell-Surface Auxin Signaling Directly Targets PIN2-Mediated Auxin Fluxes for Root Gravitropism.” <i>BioRxiv</i>, n.d. <a href=\"https://doi.org/10.1101/2022.11.30.518503\">https://doi.org/10.1101/2022.11.30.518503</a>.","apa":"Rodriguez Solovey, L., Fiedler, L., Zou, M., Giannini, C., Monzer, A., Vladimirtsev, D., … Friml, J. (n.d.). ABP1/ABL3-TMK1 cell-surface auxin signaling directly targets PIN2-mediated auxin fluxes for root gravitropism. <i>bioRxiv</i>. <a href=\"https://doi.org/10.1101/2022.11.30.518503\">https://doi.org/10.1101/2022.11.30.518503</a>","mla":"Rodriguez Solovey, Lesia, et al. “ABP1/ABL3-TMK1 Cell-Surface Auxin Signaling Directly Targets PIN2-Mediated Auxin Fluxes for Root Gravitropism.” <i>BioRxiv</i>, doi:<a href=\"https://doi.org/10.1101/2022.11.30.518503\">10.1101/2022.11.30.518503</a>.","short":"L. Rodriguez Solovey, L. Fiedler, M. Zou, C. Giannini, A. Monzer, D. Vladimirtsev, M. Randuch, Y. Yu, Z. Gelová, I. Verstraeten, J. Hajny, M. Chen, S. Tan, L. Hörmayer, L. Li, M.M. Marques-Bueno, Z. Quddoos, G. Molnar, T. Xu, I. Kulich, Y. Jaillais, J. Friml, BioRxiv (n.d.)."},"OA_place":"repository","acknowledged_ssus":[{"_id":"Bio"},{"_id":"LifeSc"}],"year":"2025","das_tickbox":"1","publication_status":"draft","title":"ABP1/ABL3-TMK1 cell-surface auxin signaling directly targets PIN2-mediated auxin fluxes for root gravitropism","publication":"bioRxiv","department":[{"_id":"JiFr"},{"_id":"XiFe"}],"ec_funded":1,"doi":"10.1101/2022.11.30.518503","ddc":["580"]}]