Brassinosteroid signaling and auxin transport are required to establish the periodic pattern of Arabidopsis shoot vascular bundles

The plant vascular system provides transport and support capabilities that are essential for plant growth and development, yet the mechanisms directing the arrangement of vascular bundles within the shoot inflorescence stem remain unknown. We used computational and experimental biology to evaluate t...

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Authors: Ibañes, Marta, Fàbregas Vallvé, Norma, Chory, Joanne, Caño-Delgado, Ana I.
Format: article
Status:Published version
Publication Date:2009
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/248165
Online Access:http://hdl.handle.net/10261/248165
Access Level:Open access
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spelling Brassinosteroid signaling and auxin transport are required to establish the periodic pattern of Arabidopsis shoot vascular bundlesIbañes, MartaFàbregas Vallvé, NormaChory, JoanneCaño-Delgado, Ana I.The plant vascular system provides transport and support capabilities that are essential for plant growth and development, yet the mechanisms directing the arrangement of vascular bundles within the shoot inflorescence stem remain unknown. We used computational and experimental biology to evaluate the role of auxin and brassinosteroid hormones in vascular patterning in Arabidopsis. We show that periodic auxin maxima controlled by polar transport and not overall auxin levels underlie vascular bundle spacing, whereas brassinosteroids modulate bundle number by promoting early procambial divisions. Overall, this study demonstrates that auxin polar transport coupled to brassinosteroid signaling is required to determine the radial pattern of vascular bundles in shoots.M.I. and A.I.C.-D. acknowledge financial support from the Spanish Ministry of Science and Innovation (“Ramón y Cajal” program). N.F. is funded by a “Generalitat de Catalunya” PhD fellowship. This work was supported by Spanish Ministry of Science and Innovation Grants BIO2005/0047 and BIO2008/00505 (to A.I.C.-D.) and FIS2006/05019 and FIS2006-11452-C03-01 ( M.I.); U.S. National Science Foundation Grant IOS-0649389 (to J.C.); and by Human Frontiers Science Program Organization Award CDA2004/007 (to A.I.C.-D.). J.C. is an investigator of the Howard Hughes Medical Institute.Peer reviewedNational Academy of Sciences (U.S.)Ministerio de Ciencia e Innovación (España)Generalitat de CatalunyaNational Science Foundation (US)Human Frontier Science ProgramHoward Hughes Medical InstituteConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202120212009info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/248165reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1073/pnas.0906416106Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2481652026-05-22T06:33:51Z
dc.title.none.fl_str_mv Brassinosteroid signaling and auxin transport are required to establish the periodic pattern of Arabidopsis shoot vascular bundles
title Brassinosteroid signaling and auxin transport are required to establish the periodic pattern of Arabidopsis shoot vascular bundles
spellingShingle Brassinosteroid signaling and auxin transport are required to establish the periodic pattern of Arabidopsis shoot vascular bundles
Ibañes, Marta
title_short Brassinosteroid signaling and auxin transport are required to establish the periodic pattern of Arabidopsis shoot vascular bundles
title_full Brassinosteroid signaling and auxin transport are required to establish the periodic pattern of Arabidopsis shoot vascular bundles
title_fullStr Brassinosteroid signaling and auxin transport are required to establish the periodic pattern of Arabidopsis shoot vascular bundles
title_full_unstemmed Brassinosteroid signaling and auxin transport are required to establish the periodic pattern of Arabidopsis shoot vascular bundles
title_sort Brassinosteroid signaling and auxin transport are required to establish the periodic pattern of Arabidopsis shoot vascular bundles
dc.creator.none.fl_str_mv Ibañes, Marta
Fàbregas Vallvé, Norma
Chory, Joanne
Caño-Delgado, Ana I.
author Ibañes, Marta
author_facet Ibañes, Marta
Fàbregas Vallvé, Norma
Chory, Joanne
Caño-Delgado, Ana I.
author_role author
author2 Fàbregas Vallvé, Norma
Chory, Joanne
Caño-Delgado, Ana I.
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Generalitat de Catalunya
National Science Foundation (US)
Human Frontier Science Program
Howard Hughes Medical Institute
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description The plant vascular system provides transport and support capabilities that are essential for plant growth and development, yet the mechanisms directing the arrangement of vascular bundles within the shoot inflorescence stem remain unknown. We used computational and experimental biology to evaluate the role of auxin and brassinosteroid hormones in vascular patterning in Arabidopsis. We show that periodic auxin maxima controlled by polar transport and not overall auxin levels underlie vascular bundle spacing, whereas brassinosteroids modulate bundle number by promoting early procambial divisions. Overall, this study demonstrates that auxin polar transport coupled to brassinosteroid signaling is required to determine the radial pattern of vascular bundles in shoots.
publishDate 2009
dc.date.none.fl_str_mv 2009
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/248165
url http://hdl.handle.net/10261/248165
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1073/pnas.0906416106
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv National Academy of Sciences (U.S.)
publisher.none.fl_str_mv National Academy of Sciences (U.S.)
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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