--- _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. date_created: 2020-12-01T12:38:18Z date_published: 2020-12-01T00:00:00Z date_updated: 2023-09-19T10:39:33Z 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 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: '7427' relation: part_of_dissertation status: public - id: '6260' relation: part_of_dissertation status: public - id: '7500' relation: part_of_dissertation status: public - id: '191' relation: part_of_dissertation status: public - id: '449' 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: c635000d-4b10-11ee-a964-aac5a93f6ac1 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). date_created: 2021-01-03T23:01:23Z date_published: 2020-12-11T00:00:00Z date_updated: 2024-03-28T23:30:44Z 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 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: 2024-03-28T23:30:44Z 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 has_accepted_license: '1' intvolume: ' 21' isi: 1 issue: '16' language: - iso: eng license: https://creativecommons.org/licenses/by/4.0/ month: '08' oa: 1 oa_version: Published Version pmid: 1 publication: International Journal of Molecular Sciences publication_identifier: eissn: - '14220067' issn: - '16616596' 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: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 21 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: 2023-12-01T13:51:07Z 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 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' ... --- _id: '5908' abstract: - lang: eng text: The interorganelle communication mediated by membrane contact sites (MCSs) is an evolutionary hallmark of eukaryotic cells. MCS connections enable the nonvesicular exchange of information between organelles and allow them to coordinate responses to changing cellular environments. In plants, the importance of MCS components in the responses to environmental stress has been widely established, but the molecular mechanisms regulating interorganelle connectivity during stress still remain opaque. In this report, we use the model plant Arabidopsis thaliana to show that ionic stress increases endoplasmic reticulum (ER)–plasma membrane (PM) connectivity by promoting the cortical expansion of synaptotagmin 1 (SYT1)-enriched ER–PM contact sites (S-EPCSs). We define differential roles for the cortical cytoskeleton in the regulation of S-EPCS dynamics and ER–PM connectivity, and we identify the accumulation of phosphatidylinositol 4,5-bisphosphate [PI(4,5)P2] at the PM as a molecular signal associated with the ER–PM connectivity changes. Our study highlights the functional conservation of EPCS components and PM phosphoinositides as modulators of ER–PM connectivity in eukaryotes, and uncovers unique aspects of the spatiotemporal regulation of ER–PM connectivity in plants. article_processing_charge: No article_type: original author: - first_name: Eunkyoung full_name: Lee, Eunkyoung last_name: Lee - first_name: Steffen full_name: Vanneste, Steffen last_name: Vanneste - first_name: Jessica full_name: Pérez-Sancho, Jessica last_name: Pérez-Sancho - first_name: Francisco full_name: Benitez-Fuente, Francisco last_name: Benitez-Fuente - first_name: Matthew full_name: Strelau, Matthew last_name: Strelau - first_name: Alberto P. full_name: Macho, Alberto P. last_name: Macho - first_name: Miguel A. full_name: Botella, Miguel A. last_name: Botella - first_name: Jiří full_name: Friml, Jiří id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 - first_name: Abel full_name: Rosado, Abel last_name: Rosado citation: ama: Lee E, Vanneste S, Pérez-Sancho J, et al. Ionic stress enhances ER–PM connectivity via phosphoinositide-associated SYT1 contact site expansion in Arabidopsis. Proceedings of the National Academy of Sciences of the United States of America. 2019;116(4):1420-1429. doi:10.1073/pnas.1818099116 apa: Lee, E., Vanneste, S., Pérez-Sancho, J., Benitez-Fuente, F., Strelau, M., Macho, A. P., … Rosado, A. (2019). Ionic stress enhances ER–PM connectivity via phosphoinositide-associated SYT1 contact site expansion in Arabidopsis. Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences. https://doi.org/10.1073/pnas.1818099116 chicago: Lee, Eunkyoung, Steffen Vanneste, Jessica Pérez-Sancho, Francisco Benitez-Fuente, Matthew Strelau, Alberto P. Macho, Miguel A. Botella, Jiří Friml, and Abel Rosado. “Ionic Stress Enhances ER–PM Connectivity via Phosphoinositide-Associated SYT1 Contact Site Expansion in Arabidopsis.” Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences, 2019. https://doi.org/10.1073/pnas.1818099116. ieee: E. Lee et al., “Ionic stress enhances ER–PM connectivity via phosphoinositide-associated SYT1 contact site expansion in Arabidopsis,” Proceedings of the National Academy of Sciences of the United States of America, vol. 116, no. 4. National Academy of Sciences, pp. 1420–1429, 2019. ista: Lee E, Vanneste S, Pérez-Sancho J, Benitez-Fuente F, Strelau M, Macho AP, Botella MA, Friml J, Rosado A. 2019. Ionic stress enhances ER–PM connectivity via phosphoinositide-associated SYT1 contact site expansion in Arabidopsis. Proceedings of the National Academy of Sciences of the United States of America. 116(4), 1420–1429. mla: Lee, Eunkyoung, et al. “Ionic Stress Enhances ER–PM Connectivity via Phosphoinositide-Associated SYT1 Contact Site Expansion in Arabidopsis.” Proceedings of the National Academy of Sciences of the United States of America, vol. 116, no. 4, National Academy of Sciences, 2019, pp. 1420–29, doi:10.1073/pnas.1818099116. short: E. Lee, S. Vanneste, J. Pérez-Sancho, F. Benitez-Fuente, M. Strelau, A.P. Macho, M.A. Botella, J. Friml, A. Rosado, Proceedings of the National Academy of Sciences of the United States of America 116 (2019) 1420–1429. date_created: 2019-02-03T22:59:14Z date_published: 2019-01-22T00:00:00Z date_updated: 2023-08-24T14:31:09Z day: '22' department: - _id: JiFr doi: 10.1073/pnas.1818099116 external_id: isi: - '000456336100050' pmid: - '30610176' intvolume: ' 116' isi: 1 issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1073/pnas.1818099116 month: '01' oa: 1 oa_version: Published Version page: 1420-1429 pmid: 1 publication: Proceedings of the National Academy of Sciences of the United States of America publication_status: published publisher: National Academy of Sciences quality_controlled: '1' scopus_import: '1' status: public title: Ionic stress enhances ER–PM connectivity via phosphoinositide-associated SYT1 contact site expansion in Arabidopsis type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 116 year: '2019' ... --- _id: '6023' abstract: - lang: eng text: Multicellular development requires coordinated cell polarization relative to body axes, and translation to oriented cell division 1–3 . In plants, it is unknown how cell polarities are connected to organismal axes and translated to division. Here, we identify Arabidopsis SOSEKI proteins that integrate apical–basal and radial organismal axes to localize to polar cell edges. Localization does not depend on tissue context, requires cell wall integrity and is defined by a transferrable, protein-specific motif. A Domain of Unknown Function in SOSEKI proteins resembles the DIX oligomerization domain in the animal Dishevelled polarity regulator. The DIX-like domain self-interacts and is required for edge localization and for influencing division orientation, together with a second domain that defines the polar membrane domain. Our work shows that SOSEKI proteins locally interpret global polarity cues and can influence cell division orientation. Furthermore, this work reveals that, despite fundamental differences, cell polarity mechanisms in plants and animals converge on a similar protein domain. article_processing_charge: No author: - first_name: Saiko full_name: Yoshida, Saiko id: 2E46069C-F248-11E8-B48F-1D18A9856A87 last_name: Yoshida - first_name: Alja full_name: Van Der Schuren, Alja last_name: Van Der Schuren - first_name: Maritza full_name: Van Dop, Maritza last_name: Van Dop - first_name: Luc full_name: Van Galen, Luc last_name: Van Galen - first_name: Shunsuke full_name: Saiga, Shunsuke last_name: Saiga - first_name: Milad full_name: Adibi, Milad last_name: Adibi - first_name: Barbara full_name: Möller, Barbara last_name: Möller - first_name: Colette A. full_name: Ten Hove, Colette A. last_name: Ten Hove - first_name: Peter full_name: Marhavy, Peter id: 3F45B078-F248-11E8-B48F-1D18A9856A87 last_name: Marhavy orcid: 0000-0001-5227-5741 - first_name: Richard full_name: Smith, Richard last_name: Smith - first_name: Jiří full_name: Friml, Jiří id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 - first_name: Dolf full_name: Weijers, Dolf last_name: Weijers citation: ama: Yoshida S, Van Der Schuren A, Van Dop M, et al. A SOSEKI-based coordinate system interprets global polarity cues in arabidopsis. Nature Plants. 2019;5(2):160-166. doi:10.1038/s41477-019-0363-6 apa: Yoshida, S., Van Der Schuren, A., Van Dop, M., Van Galen, L., Saiga, S., Adibi, M., … Weijers, D. (2019). A SOSEKI-based coordinate system interprets global polarity cues in arabidopsis. Nature Plants. Springer Nature. https://doi.org/10.1038/s41477-019-0363-6 chicago: Yoshida, Saiko, Alja Van Der Schuren, Maritza Van Dop, Luc Van Galen, Shunsuke Saiga, Milad Adibi, Barbara Möller, et al. “A SOSEKI-Based Coordinate System Interprets Global Polarity Cues in Arabidopsis.” Nature Plants. Springer Nature, 2019. https://doi.org/10.1038/s41477-019-0363-6. ieee: S. Yoshida et al., “A SOSEKI-based coordinate system interprets global polarity cues in arabidopsis,” Nature Plants, vol. 5, no. 2. Springer Nature, pp. 160–166, 2019. ista: Yoshida S, Van Der Schuren A, Van Dop M, Van Galen L, Saiga S, Adibi M, Möller B, Ten Hove CA, Marhavý P, Smith R, Friml J, Weijers D. 2019. A SOSEKI-based coordinate system interprets global polarity cues in arabidopsis. Nature Plants. 5(2), 160–166. mla: Yoshida, Saiko, et al. “A SOSEKI-Based Coordinate System Interprets Global Polarity Cues in Arabidopsis.” Nature Plants, vol. 5, no. 2, Springer Nature, 2019, pp. 160–66, doi:10.1038/s41477-019-0363-6. short: S. Yoshida, A. Van Der Schuren, M. Van Dop, L. Van Galen, S. Saiga, M. Adibi, B. Möller, C.A. Ten Hove, P. Marhavý, R. Smith, J. Friml, D. Weijers, Nature Plants 5 (2019) 160–166. date_created: 2019-02-17T22:59:21Z date_published: 2019-02-08T00:00:00Z date_updated: 2023-08-24T14:46:47Z day: '08' department: - _id: JiFr - _id: EvBe doi: 10.1038/s41477-019-0363-6 ec_funded: 1 external_id: isi: - '000460479600014' intvolume: ' 5' isi: 1 issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://www.biorxiv.org/content/10.1101/479113v1.abstract month: '02' oa: 1 oa_version: Submitted Version page: 160-166 project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication: Nature Plants publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: A SOSEKI-based coordinate system interprets global polarity cues in arabidopsis type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 5 year: '2019' ... --- _id: '6104' abstract: - lang: eng text: Abiotic stress poses constant challenges for plant survival and is a serious problem for global agricultural productivity. On a molecular level, stress conditions result in elevation of reactive oxygen species (ROS) production causing oxidative stress associated with oxidation of proteins and nucleic acids as well as impairment of membrane functions. Adaptation of root growth to ROS accumulation is facilitated through modification of auxin and cytokinin hormone homeostasis. Here, we report that in Arabidopsis root meristem, ROS-induced changes of auxin levels correspond to decreased abundance of PIN auxin efflux carriers at the plasma membrane (PM). Specifically, increase in H2O2 levels affects PIN2 endocytic recycling. We show that the PIN2 intracellular trafficking during adaptation to oxidative stress requires the function of the ADP-ribosylation factor (ARF)-guanine-nucleotide exchange factor (GEF) BEN1, an actin-associated regulator of the trafficking from the PM to early endosomes and, presumably, indirectly, trafficking to the vacuoles. We propose that H2O2 levels affect the actin dynamics thus modulating ARF-GEF-dependent trafficking of PIN2. This mechanism provides a way how root growth acclimates to stress and adapts to a changing environment. article_processing_charge: No author: - first_name: Marta full_name: Zwiewka, Marta last_name: Zwiewka - first_name: Agnieszka full_name: Bielach, Agnieszka last_name: Bielach - first_name: Prashanth full_name: Tamizhselvan, Prashanth last_name: Tamizhselvan - first_name: Sharmila full_name: Madhavan, Sharmila last_name: Madhavan - first_name: Eman Elrefaay full_name: Ryad, Eman Elrefaay last_name: Ryad - first_name: Shutang full_name: Tan, Shutang id: 2DE75584-F248-11E8-B48F-1D18A9856A87 last_name: Tan orcid: 0000-0002-0471-8285 - first_name: Mónika full_name: Hrtyan, Mónika id: 45A71A74-F248-11E8-B48F-1D18A9856A87 last_name: Hrtyan - first_name: Petre full_name: Dobrev, Petre last_name: Dobrev - first_name: Radomira full_name: Vanková, Radomira last_name: Vanková - first_name: Jiří full_name: Friml, Jiří id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 - first_name: Vanesa B. full_name: Tognetti, Vanesa B. last_name: Tognetti citation: ama: Zwiewka M, Bielach A, Tamizhselvan P, et al. Root adaptation to H2O2-induced oxidative stress by ARF-GEF BEN1- and cytoskeleton-mediated PIN2 trafficking. Plant and Cell Physiology. 2019;60(2):255-273. doi:10.1093/pcp/pcz001 apa: Zwiewka, M., Bielach, A., Tamizhselvan, P., Madhavan, S., Ryad, E. E., Tan, S., … Tognetti, V. B. (2019). Root adaptation to H2O2-induced oxidative stress by ARF-GEF BEN1- and cytoskeleton-mediated PIN2 trafficking. Plant and Cell Physiology. Oxford University Press. https://doi.org/10.1093/pcp/pcz001 chicago: Zwiewka, Marta, Agnieszka Bielach, Prashanth Tamizhselvan, Sharmila Madhavan, Eman Elrefaay Ryad, Shutang Tan, Mónika Hrtyan, et al. “Root Adaptation to H2O2-Induced Oxidative Stress by ARF-GEF BEN1- and Cytoskeleton-Mediated PIN2 Trafficking.” Plant and Cell Physiology. Oxford University Press, 2019. https://doi.org/10.1093/pcp/pcz001. ieee: M. Zwiewka et al., “Root adaptation to H2O2-induced oxidative stress by ARF-GEF BEN1- and cytoskeleton-mediated PIN2 trafficking,” Plant and Cell Physiology, vol. 60, no. 2. Oxford University Press, pp. 255–273, 2019. ista: Zwiewka M, Bielach A, Tamizhselvan P, Madhavan S, Ryad EE, Tan S, Hrtyan M, Dobrev P, Vanková R, Friml J, Tognetti VB. 2019. Root adaptation to H2O2-induced oxidative stress by ARF-GEF BEN1- and cytoskeleton-mediated PIN2 trafficking. Plant and Cell Physiology. 60(2), 255–273. mla: Zwiewka, Marta, et al. “Root Adaptation to H2O2-Induced Oxidative Stress by ARF-GEF BEN1- and Cytoskeleton-Mediated PIN2 Trafficking.” Plant and Cell Physiology, vol. 60, no. 2, Oxford University Press, 2019, pp. 255–73, doi:10.1093/pcp/pcz001. short: M. Zwiewka, A. Bielach, P. Tamizhselvan, S. Madhavan, E.E. Ryad, S. Tan, M. Hrtyan, P. Dobrev, R. Vanková, J. Friml, V.B. Tognetti, Plant and Cell Physiology 60 (2019) 255–273. date_created: 2019-03-17T22:59:14Z date_published: 2019-02-01T00:00:00Z date_updated: 2023-08-25T08:05:28Z day: '01' department: - _id: JiFr doi: 10.1093/pcp/pcz001 external_id: isi: - '000459634300002' pmid: - '30668780' intvolume: ' 60' isi: 1 issue: '2' language: - iso: eng month: '02' oa_version: None page: 255-273 pmid: 1 publication: Plant and Cell Physiology publication_identifier: eissn: - 1471-9053 issn: - 0032-0781 publication_status: published publisher: Oxford University Press quality_controlled: '1' scopus_import: '1' status: public title: Root adaptation to H2O2-induced oxidative stress by ARF-GEF BEN1- and cytoskeleton-mediated PIN2 trafficking type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 60 year: '2019' ... --- _id: '6262' abstract: - lang: eng text: "Gravitropism is an adaptive response that orients plant growth parallel to the gravity vector. Asymmetric\r\ndistribution of the phytohormone auxin is a necessary prerequisite to the tropic bending both in roots and\r\nshoots. During hypocotyl gravitropic response, the PIN3 auxin transporter polarizes within gravity-sensing\r\ncells to redirect intercellular auxin fluxes. First gravity-induced PIN3 polarization to the bottom cell mem-\r\nbranes leads to the auxin accumulation at the lower side of the organ, initiating bending and, later, auxin\r\nfeedback-mediated repolarization restores symmetric auxin distribution to terminate bending. Here, we per-\r\nformed a forward genetic screen to identify regulators of both PIN3 polarization events during gravitropic\r\nresponse. We searched for mutants with defective PIN3 polarizations based on easy-to-score morphological\r\noutputs of decreased or increased gravity-induced hypocotyl bending. We identified the number of\r\nhypocotyl reduced bending (hrb) and hypocotyl hyperbending (hhb) mutants, revealing that reduced bending corre-\r\nlated typically with defective gravity-induced PIN3 relocation whereas all analyzed hhb mutants showed\r\ndefects in the second, auxin-mediated PIN3 relocation. Next-generation sequencing-aided mutation map-\r\nping identified several candidate genes, including SCARECROW and ACTIN2, revealing roles of endodermis\r\nspecification and actin cytoskeleton in the respective gravity- and auxin-induced PIN polarization events.\r\nThe hypocotyl gravitropism screen thus promises to provide novel insights into mechanisms underlying cell\r\npolarity and plant adaptive development." article_processing_charge: Yes (via OA deal) article_type: original author: - first_name: Hana full_name: Rakusová, Hana last_name: Rakusová - first_name: Huibin full_name: Han, Huibin id: 31435098-F248-11E8-B48F-1D18A9856A87 last_name: Han - first_name: Petr full_name: Valošek, Petr id: 3CDB6F94-F248-11E8-B48F-1D18A9856A87 last_name: Valošek - first_name: Jiří full_name: Friml, Jiří id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 citation: ama: Rakusová H, Han H, Valošek P, Friml J. Genetic screen for factors mediating PIN polarization in gravistimulated Arabidopsis thaliana hypocotyls. The Plant Journal. 2019;98(6):1048-1059. doi:10.1111/tpj.14301 apa: Rakusová, H., Han, H., Valošek, P., & Friml, J. (2019). Genetic screen for factors mediating PIN polarization in gravistimulated Arabidopsis thaliana hypocotyls. The Plant Journal. Wiley. https://doi.org/10.1111/tpj.14301 chicago: Rakusová, Hana, Huibin Han, Petr Valošek, and Jiří Friml. “Genetic Screen for Factors Mediating PIN Polarization in Gravistimulated Arabidopsis Thaliana Hypocotyls.” The Plant Journal. Wiley, 2019. https://doi.org/10.1111/tpj.14301. ieee: H. Rakusová, H. Han, P. Valošek, and J. Friml, “Genetic screen for factors mediating PIN polarization in gravistimulated Arabidopsis thaliana hypocotyls,” The Plant Journal, vol. 98, no. 6. Wiley, pp. 1048–1059, 2019. ista: Rakusová H, Han H, Valošek P, Friml J. 2019. Genetic screen for factors mediating PIN polarization in gravistimulated Arabidopsis thaliana hypocotyls. The Plant Journal. 98(6), 1048–1059. mla: Rakusová, Hana, et al. “Genetic Screen for Factors Mediating PIN Polarization in Gravistimulated Arabidopsis Thaliana Hypocotyls.” The Plant Journal, vol. 98, no. 6, Wiley, 2019, pp. 1048–59, doi:10.1111/tpj.14301. short: H. Rakusová, H. Han, P. Valošek, J. Friml, The Plant Journal 98 (2019) 1048–1059. date_created: 2019-04-09T08:46:44Z date_published: 2019-06-01T00:00:00Z date_updated: 2023-08-25T10:11:03Z day: '01' ddc: - '580' department: - _id: JiFr doi: 10.1111/tpj.14301 ec_funded: 1 external_id: isi: - '000473644100008' pmid: - '30821050' file: - access_level: open_access checksum: ad3b5e270b67ba2a45f894ce3be27920 content_type: application/pdf creator: dernst date_created: 2019-04-15T09:38:43Z date_updated: 2020-07-14T12:47:25Z file_id: '6304' file_name: 2019_PlantJournal_Rakusov.pdf file_size: 1383100 relation: main_file file_date_updated: 2020-07-14T12:47:25Z has_accepted_license: '1' intvolume: ' 98' isi: 1 issue: '6' language: - iso: eng month: '06' oa: 1 oa_version: Published Version page: 1048-1059 pmid: 1 project: - _id: 25716A02-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '282300' name: Polarity and subcellular dynamics in plants publication: The Plant Journal publication_identifier: eissn: - 1365-313x issn: - 0960-7412 publication_status: published publisher: Wiley quality_controlled: '1' scopus_import: '1' status: public title: Genetic screen for factors mediating PIN polarization in gravistimulated Arabidopsis thaliana hypocotyls 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: 98 year: '2019' ... --- _id: '6261' abstract: - lang: eng text: Nitrate regulation of root stem cell activity is auxin-dependent. article_processing_charge: No article_type: letter_note author: - first_name: Y full_name: Wang, Y last_name: Wang - first_name: Z full_name: Gong, Z last_name: Gong - first_name: Jiří full_name: Friml, Jiří id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 - first_name: J full_name: Zhang, J last_name: Zhang citation: ama: Wang Y, Gong Z, Friml J, Zhang J. Nitrate modulates the differentiation of root distal stem cells. Plant Physiology. 2019;180(1):22-25. doi:10.1104/pp.18.01305 apa: Wang, Y., Gong, Z., Friml, J., & Zhang, J. (2019). Nitrate modulates the differentiation of root distal stem cells. Plant Physiology. ASPB. https://doi.org/10.1104/pp.18.01305 chicago: Wang, Y, Z Gong, Jiří Friml, and J Zhang. “Nitrate Modulates the Differentiation of Root Distal Stem Cells.” Plant Physiology. ASPB, 2019. https://doi.org/10.1104/pp.18.01305. ieee: Y. Wang, Z. Gong, J. Friml, and J. Zhang, “Nitrate modulates the differentiation of root distal stem cells,” Plant Physiology, vol. 180, no. 1. ASPB, pp. 22–25, 2019. ista: Wang Y, Gong Z, Friml J, Zhang J. 2019. Nitrate modulates the differentiation of root distal stem cells. Plant Physiology. 180(1), 22–25. mla: Wang, Y., et al. “Nitrate Modulates the Differentiation of Root Distal Stem Cells.” Plant Physiology, vol. 180, no. 1, ASPB, 2019, pp. 22–25, doi:10.1104/pp.18.01305. short: Y. Wang, Z. Gong, J. Friml, J. Zhang, Plant Physiology 180 (2019) 22–25. date_created: 2019-04-09T08:46:17Z date_published: 2019-05-01T00:00:00Z date_updated: 2023-08-25T10:10:23Z day: '01' department: - _id: JiFr doi: 10.1104/pp.18.01305 external_id: isi: - '000466860800010' pmid: - '30787134' intvolume: ' 180' isi: 1 issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1104/pp.18.01305 month: '05' oa: 1 oa_version: Published Version page: 22-25 pmid: 1 publication: Plant Physiology publication_identifier: eissn: - 1532-2548 issn: - 0032-0889 publication_status: published publisher: ASPB quality_controlled: '1' scopus_import: '1' status: public title: Nitrate modulates the differentiation of root distal stem cells type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 180 year: '2019' ... --- _id: '6504' abstract: - lang: eng text: "Root gravitropism is one of the most important processes allowing plant adaptation to the land environment. Auxin plays a central role in mediating root gravitropism, but how auxin contributes to gravitational perception and the subsequent response is still unclear.\r\n\r\nHere, we showed that the local auxin maximum/gradient within the root apex, which is generated by the PIN directional auxin transporters, regulates the expression of three key starch granule synthesis genes, SS4, PGM and ADG1, which in turn influence the accumulation of starch granules that serve as a statolith perceiving gravity.\r\n\r\nMoreover, using the cvxIAA‐ccvTIR1 system, we also showed that TIR1‐mediated auxin signaling is required for starch granule formation and gravitropic response within root tips. In addition, axr3 mutants showed reduced auxin‐mediated starch granule accumulation and disruption of gravitropism within the root apex.\r\n\r\nOur results indicate that auxin‐mediated statolith production relies on the TIR1/AFB‐AXR3‐mediated auxin signaling pathway. In summary, we propose a dual role for auxin in gravitropism: the regulation of both gravity perception and response." 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: P full_name: He, P last_name: He - first_name: X full_name: Ma, X last_name: Ma - first_name: Z full_name: Yang, Z last_name: Yang - first_name: C full_name: Pang, C last_name: Pang - first_name: J full_name: Yu, J last_name: Yu - first_name: G full_name: Wang, G last_name: Wang - first_name: Jiří full_name: Friml, Jiří id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 - first_name: G full_name: Xiao, G last_name: Xiao citation: ama: Zhang Y, He P, Ma X, et al. Auxin-mediated statolith production for root gravitropism. New Phytologist. 2019;224(2):761-774. doi:10.1111/nph.15932 apa: Zhang, Y., He, P., Ma, X., Yang, Z., Pang, C., Yu, J., … Xiao, G. (2019). Auxin-mediated statolith production for root gravitropism. New Phytologist. Wiley. https://doi.org/10.1111/nph.15932 chicago: Zhang, Yuzhou, P He, X Ma, Z Yang, C Pang, J Yu, G Wang, Jiří Friml, and G Xiao. “Auxin-Mediated Statolith Production for Root Gravitropism.” New Phytologist. Wiley, 2019. https://doi.org/10.1111/nph.15932. ieee: Y. Zhang et al., “Auxin-mediated statolith production for root gravitropism,” New Phytologist, vol. 224, no. 2. Wiley, pp. 761–774, 2019. ista: Zhang Y, He P, Ma X, Yang Z, Pang C, Yu J, Wang G, Friml J, Xiao G. 2019. Auxin-mediated statolith production for root gravitropism. New Phytologist. 224(2), 761–774. mla: Zhang, Yuzhou, et al. “Auxin-Mediated Statolith Production for Root Gravitropism.” New Phytologist, vol. 224, no. 2, Wiley, 2019, pp. 761–74, doi:10.1111/nph.15932. short: Y. Zhang, P. He, X. Ma, Z. Yang, C. Pang, J. Yu, G. Wang, J. Friml, G. Xiao, New Phytologist 224 (2019) 761–774. date_created: 2019-05-28T14:33:26Z date_published: 2019-10-01T00:00:00Z date_updated: 2023-08-28T08:40:13Z day: '01' ddc: - '580' department: - _id: JiFr doi: 10.1111/nph.15932 external_id: isi: - '000487184200024' pmid: - '31111487' file: - access_level: open_access checksum: 6488243334538f5c39099a701cbf76b9 content_type: application/pdf creator: dernst date_created: 2020-10-14T08:59:33Z date_updated: 2020-10-14T08:59:33Z file_id: '8661' file_name: 2019_NewPhytologist_Zhang_accepted.pdf file_size: 1099061 relation: main_file success: 1 file_date_updated: 2020-10-14T08:59:33Z has_accepted_license: '1' intvolume: ' 224' isi: 1 issue: '2' language: - iso: eng month: '10' oa: 1 oa_version: Submitted Version page: 761-774 pmid: 1 publication: New Phytologist publication_identifier: eissn: - 1469-8137 issn: - 0028-646x publication_status: published publisher: Wiley quality_controlled: '1' scopus_import: '1' status: public title: Auxin-mediated statolith production for root gravitropism type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 224 year: '2019' ...