--- _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. date_created: 2020-02-18T10:03:47Z date_published: 2020-06-01T00:00:00Z date_updated: 2024-03-27T23:30:37Z 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 has_accepted_license: '1' intvolume: ' 226' isi: 1 issue: '5' language: - iso: eng license: https://creativecommons.org/licenses/by/4.0/ 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 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: '146' abstract: - lang: eng text: The root cap protects the stem cell niche of angiosperm roots from damage. In Arabidopsis, lateral root cap (LRC) cells covering the meristematic zone are regularly lost through programmed cell death, while the outermost layer of the root cap covering the tip is repeatedly sloughed. Efficient coordination with stem cells producing new layers is needed to maintain a constant size of the cap. We present a signalling pair, the peptide IDA-LIKE1 (IDL1) and its receptor HAESA-LIKE2 (HSL2), mediating such communication. Live imaging over several days characterized this process from initial fractures in LRC cell files to full separation of a layer. Enhanced expression of IDL1 in the separating root cap layers resulted in increased frequency of sloughing, balanced with generation of new layers in a HSL2-dependent manner. Transcriptome analyses linked IDL1-HSL2 signalling to the transcription factors BEARSKIN1/2 and genes associated with programmed cell death. Mutations in either IDL1 or HSL2 slowed down cell division, maturation and separation. Thus, IDL1-HSL2 signalling potentiates dynamic regulation of the homeostatic balance between stem cell division and sloughing activity. article_processing_charge: No article_type: original author: - first_name: Chun Lin full_name: Shi, Chun Lin last_name: Shi - first_name: Daniel full_name: Von Wangenheim, Daniel id: 49E91952-F248-11E8-B48F-1D18A9856A87 last_name: Von Wangenheim orcid: 0000-0002-6862-1247 - first_name: Ullrich full_name: Herrmann, Ullrich last_name: Herrmann - first_name: Mari full_name: Wildhagen, Mari last_name: Wildhagen - first_name: Ivan full_name: Kulik, Ivan id: F0AB3FCE-02D1-11E9-BD0E-99399A5D3DEB last_name: Kulik - first_name: Andreas full_name: Kopf, Andreas last_name: Kopf - first_name: Takashi full_name: Ishida, Takashi last_name: Ishida - first_name: Vilde full_name: Olsson, Vilde last_name: Olsson - first_name: Mari Kristine full_name: Anker, Mari Kristine last_name: Anker - first_name: Markus full_name: Albert, Markus last_name: Albert - first_name: Melinka A full_name: Butenko, Melinka A last_name: Butenko - first_name: Georg full_name: Felix, Georg last_name: Felix - first_name: Shinichiro full_name: Sawa, Shinichiro last_name: Sawa - first_name: Manfred full_name: Claassen, Manfred last_name: Claassen - first_name: Jirí full_name: Friml, Jirí id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 - first_name: Reidunn B full_name: Aalen, Reidunn B last_name: Aalen citation: ama: Shi CL, von Wangenheim D, Herrmann U, et al. The dynamics of root cap sloughing in Arabidopsis is regulated by peptide signalling. Nature Plants. 2018;4(8):596-604. doi:10.1038/s41477-018-0212-z apa: Shi, C. L., von Wangenheim, D., Herrmann, U., Wildhagen, M., Kulik, I., Kopf, A., … Aalen, R. B. (2018). The dynamics of root cap sloughing in Arabidopsis is regulated by peptide signalling. Nature Plants. Nature Publishing Group. https://doi.org/10.1038/s41477-018-0212-z chicago: Shi, Chun Lin, Daniel von Wangenheim, Ullrich Herrmann, Mari Wildhagen, Ivan Kulik, Andreas Kopf, Takashi Ishida, et al. “The Dynamics of Root Cap Sloughing in Arabidopsis Is Regulated by Peptide Signalling.” Nature Plants. Nature Publishing Group, 2018. https://doi.org/10.1038/s41477-018-0212-z. ieee: C. L. Shi et al., “The dynamics of root cap sloughing in Arabidopsis is regulated by peptide signalling,” Nature Plants, vol. 4, no. 8. Nature Publishing Group, pp. 596–604, 2018. ista: Shi CL, von Wangenheim D, Herrmann U, Wildhagen M, Kulik I, Kopf A, Ishida T, Olsson V, Anker MK, Albert M, Butenko MA, Felix G, Sawa S, Claassen M, Friml J, Aalen RB. 2018. The dynamics of root cap sloughing in Arabidopsis is regulated by peptide signalling. Nature Plants. 4(8), 596–604. mla: Shi, Chun Lin, et al. “The Dynamics of Root Cap Sloughing in Arabidopsis Is Regulated by Peptide Signalling.” Nature Plants, vol. 4, no. 8, Nature Publishing Group, 2018, pp. 596–604, doi:10.1038/s41477-018-0212-z. short: C.L. Shi, D. von Wangenheim, U. Herrmann, M. Wildhagen, I. Kulik, A. Kopf, T. Ishida, V. Olsson, M.K. Anker, M. Albert, M.A. Butenko, G. Felix, S. Sawa, M. Claassen, J. Friml, R.B. Aalen, Nature Plants 4 (2018) 596–604. date_created: 2018-12-11T11:44:52Z date_published: 2018-07-30T00:00:00Z date_updated: 2023-09-19T10:08:45Z day: '30' ddc: - '580' department: - _id: JiFr doi: 10.1038/s41477-018-0212-z external_id: isi: - '000443861300016' pmid: - '30061750' file: - access_level: open_access checksum: da33101c76ee1b2dc5ab28fd2ccba9d0 content_type: application/pdf creator: dernst date_created: 2019-11-18T16:24:07Z date_updated: 2020-07-14T12:44:56Z file_id: '7043' file_name: 2018_NaturePlants_Shi.pdf file_size: 226829 relation: main_file file_date_updated: 2020-07-14T12:44:56Z has_accepted_license: '1' intvolume: ' 4' isi: 1 issue: '8' language: - iso: eng month: '07' oa: 1 oa_version: Submitted Version page: 596 - 604 pmid: 1 publication: Nature Plants publication_status: published publisher: Nature Publishing Group publist_id: '7777' quality_controlled: '1' related_material: link: - description: News on IST Homepage relation: press_release url: https://ist.ac.at/en/news/new-process-in-root-development-discovered/ scopus_import: '1' status: public title: The dynamics of root cap sloughing in Arabidopsis is regulated by peptide signalling type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 4 year: '2018' ...