--- _id: '449' abstract: - lang: eng text: Auxin is unique among plant hormones due to its directional transport that is mediated by the polarly distributed PIN auxin transporters at the plasma membrane. The canalization hypothesis proposes that the auxin feedback on its polar flow is a crucial, plant-specific mechanism mediating multiple self-organizing developmental processes. Here, we used the auxin effect on the PIN polar localization in Arabidopsis thaliana roots as a proxy for the auxin feedback on the PIN polarity during canalization. We performed microarray experiments to find regulators of this process that act downstream of auxin. We identified genes that were transcriptionally regulated by auxin in an AXR3/IAA17- and ARF7/ARF19-dependent manner. Besides the known components of the PIN polarity, such as PID and PIP5K kinases, a number of potential new regulators were detected, among which the WRKY23 transcription factor, which was characterized in more detail. Gain- and loss-of-function mutants confirmed a role for WRKY23 in mediating the auxin effect on the PIN polarity. Accordingly, processes requiring auxin-mediated PIN polarity rearrangements, such as vascular tissue development during leaf venation, showed a higher WRKY23 expression and required the WRKY23 activity. Our results provide initial insights into the auxin transcriptional network acting upstream of PIN polarization and, potentially, canalization-mediated plant development. article_processing_charge: Yes author: - first_name: Tomas full_name: Prat, Tomas id: 3DA3BFEE-F248-11E8-B48F-1D18A9856A87 last_name: Prat - first_name: Jakub full_name: Hajny, Jakub id: 4800CC20-F248-11E8-B48F-1D18A9856A87 last_name: Hajny orcid: 0000-0003-2140-7195 - first_name: Wim full_name: Grunewald, Wim last_name: Grunewald - first_name: Mina K full_name: Vasileva, Mina K id: 3407EB18-F248-11E8-B48F-1D18A9856A87 last_name: Vasileva - first_name: Gergely full_name: Molnar, Gergely id: 34F1AF46-F248-11E8-B48F-1D18A9856A87 last_name: Molnar - first_name: Ricardo full_name: Tejos, Ricardo last_name: Tejos - first_name: Markus full_name: Schmid, Markus last_name: Schmid - first_name: Michael full_name: Sauer, Michael last_name: Sauer - first_name: Jirí full_name: Friml, Jirí id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 citation: ama: Prat T, Hajny J, Grunewald W, et al. WRKY23 is a component of the transcriptional network mediating auxin feedback on PIN polarity. PLoS Genetics. 2018;14(1). doi:10.1371/journal.pgen.1007177 apa: Prat, T., Hajny, J., Grunewald, W., Vasileva, M. K., Molnar, G., Tejos, R., … Friml, J. (2018). WRKY23 is a component of the transcriptional network mediating auxin feedback on PIN polarity. PLoS Genetics. Public Library of Science. https://doi.org/10.1371/journal.pgen.1007177 chicago: Prat, Tomas, Jakub Hajny, Wim Grunewald, Mina K Vasileva, Gergely Molnar, Ricardo Tejos, Markus Schmid, Michael Sauer, and Jiří Friml. “WRKY23 Is a Component of the Transcriptional Network Mediating Auxin Feedback on PIN Polarity.” PLoS Genetics. Public Library of Science, 2018. https://doi.org/10.1371/journal.pgen.1007177. ieee: T. Prat et al., “WRKY23 is a component of the transcriptional network mediating auxin feedback on PIN polarity,” PLoS Genetics, vol. 14, no. 1. Public Library of Science, 2018. ista: Prat T, Hajny J, Grunewald W, Vasileva MK, Molnar G, Tejos R, Schmid M, Sauer M, Friml J. 2018. WRKY23 is a component of the transcriptional network mediating auxin feedback on PIN polarity. PLoS Genetics. 14(1). mla: Prat, Tomas, et al. “WRKY23 Is a Component of the Transcriptional Network Mediating Auxin Feedback on PIN Polarity.” PLoS Genetics, vol. 14, no. 1, Public Library of Science, 2018, doi:10.1371/journal.pgen.1007177. short: T. Prat, J. Hajny, W. Grunewald, M.K. Vasileva, G. Molnar, R. Tejos, M. Schmid, M. Sauer, J. Friml, PLoS Genetics 14 (2018). date_created: 2018-12-11T11:46:32Z date_published: 2018-01-29T00:00:00Z date_updated: 2024-03-27T23:30:37Z day: '29' ddc: - '581' department: - _id: JiFr doi: 10.1371/journal.pgen.1007177 ec_funded: 1 external_id: isi: - '000423718600034' file: - access_level: open_access checksum: 0276d66788ec076f4924164a39e6a712 content_type: application/pdf creator: system date_created: 2018-12-12T10:10:52Z date_updated: 2020-07-14T12:46:30Z file_id: '4843' file_name: IST-2018-967-v1+1_journal.pgen.1007177.pdf file_size: 24709062 relation: main_file file_date_updated: 2020-07-14T12:46:30Z has_accepted_license: '1' intvolume: ' 14' isi: 1 issue: '1' language: - iso: eng license: https://creativecommons.org/licenses/by/4.0/ month: '01' oa: 1 oa_version: Published Version project: - _id: 25716A02-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '282300' name: Polarity and subcellular dynamics in plants publication: PLoS Genetics publication_status: published publisher: Public Library of Science publist_id: '7373' pubrep_id: '967' quality_controlled: '1' related_material: record: - id: '1127' relation: dissertation_contains status: public - id: '7172' relation: dissertation_contains status: public - id: '8822' relation: dissertation_contains status: public scopus_import: '1' status: public title: WRKY23 is a component of the transcriptional network mediating auxin feedback on PIN polarity 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: 14 year: '2018' ...