New clothes for the jasmonic acid receptor COI1: delayed abscission, meristem arrest and apical dominance.

In a screen for delayed floral organ abscission in Arabidopsis, we have identified a novel mutant of CORONATINE INSENSITIVE 1 (COI1), the F-box protein that has been shown to be the jasmonic acid (JA) co-receptor. While JA has been shown to have an important role in senescence, root development, pol...

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Autores principales:	Joonyup Kim, Bradley Dotson, Camila Rey, Joshua Lindsey, Anthony B Bleecker, Brad M Binder, Sara E Patterson
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3fbb7d92e60d42af81114cf8400da3cb
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spelling	oai:doaj.org-article:3fbb7d92e60d42af81114cf8400da3cb2021-11-18T07:51:09ZNew clothes for the jasmonic acid receptor COI1: delayed abscission, meristem arrest and apical dominance.1932-620310.1371/journal.pone.0060505https://doaj.org/article/3fbb7d92e60d42af81114cf8400da3cb2013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23573263/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203In a screen for delayed floral organ abscission in Arabidopsis, we have identified a novel mutant of CORONATINE INSENSITIVE 1 (COI1), the F-box protein that has been shown to be the jasmonic acid (JA) co-receptor. While JA has been shown to have an important role in senescence, root development, pollen dehiscence and defense responses, there has been little focus on its critical role in floral organ abscission. Abscission, or the detachment of organs from the main body of a plant, is an essential process during plant development and a unique type of cell separation regulated by endogenous and exogenous signals. Previous studies have indicated that auxin and ethylene are major plant hormones regulating abscission; and here we show that regulation of floral organ abscission is also controlled by jasmonic acid in Arabidopsis thaliana. Our characterization of coi1-1 and a novel allele (coi1-37) has also revealed an essential role in apical dominance and floral meristem arrest. In this study we provide genetic evidence indicating that delayed abscission 4 (dab4-1) is allelic to coi1-1 and that meristem arrest and apical dominance appear to be evolutionarily divergent functions for COI1 that are governed in an ecotype-dependent manner. Further characterizations of ethylene and JA responses of dab4-1/coi1-37 also provide new information suggesting separate pathways for ethylene and JA that control both floral organ abscission and hypocotyl growth in young seedlings. Our study opens the door revealing new roles for JA and its interaction with other hormones during plant development.Joonyup KimBradley DotsonCamila ReyJoshua LindseyAnthony B BleeckerBrad M BinderSara E PattersonPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 4, p e60505 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Joonyup Kim Bradley Dotson Camila Rey Joshua Lindsey Anthony B Bleecker Brad M Binder Sara E Patterson New clothes for the jasmonic acid receptor COI1: delayed abscission, meristem arrest and apical dominance.
description	In a screen for delayed floral organ abscission in Arabidopsis, we have identified a novel mutant of CORONATINE INSENSITIVE 1 (COI1), the F-box protein that has been shown to be the jasmonic acid (JA) co-receptor. While JA has been shown to have an important role in senescence, root development, pollen dehiscence and defense responses, there has been little focus on its critical role in floral organ abscission. Abscission, or the detachment of organs from the main body of a plant, is an essential process during plant development and a unique type of cell separation regulated by endogenous and exogenous signals. Previous studies have indicated that auxin and ethylene are major plant hormones regulating abscission; and here we show that regulation of floral organ abscission is also controlled by jasmonic acid in Arabidopsis thaliana. Our characterization of coi1-1 and a novel allele (coi1-37) has also revealed an essential role in apical dominance and floral meristem arrest. In this study we provide genetic evidence indicating that delayed abscission 4 (dab4-1) is allelic to coi1-1 and that meristem arrest and apical dominance appear to be evolutionarily divergent functions for COI1 that are governed in an ecotype-dependent manner. Further characterizations of ethylene and JA responses of dab4-1/coi1-37 also provide new information suggesting separate pathways for ethylene and JA that control both floral organ abscission and hypocotyl growth in young seedlings. Our study opens the door revealing new roles for JA and its interaction with other hormones during plant development.
format	article
author	Joonyup Kim Bradley Dotson Camila Rey Joshua Lindsey Anthony B Bleecker Brad M Binder Sara E Patterson
author_facet	Joonyup Kim Bradley Dotson Camila Rey Joshua Lindsey Anthony B Bleecker Brad M Binder Sara E Patterson
author_sort	Joonyup Kim
title	New clothes for the jasmonic acid receptor COI1: delayed abscission, meristem arrest and apical dominance.
title_short	New clothes for the jasmonic acid receptor COI1: delayed abscission, meristem arrest and apical dominance.
title_full	New clothes for the jasmonic acid receptor COI1: delayed abscission, meristem arrest and apical dominance.
title_fullStr	New clothes for the jasmonic acid receptor COI1: delayed abscission, meristem arrest and apical dominance.
title_full_unstemmed	New clothes for the jasmonic acid receptor COI1: delayed abscission, meristem arrest and apical dominance.
title_sort	new clothes for the jasmonic acid receptor coi1: delayed abscission, meristem arrest and apical dominance.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/3fbb7d92e60d42af81114cf8400da3cb
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New clothes for the jasmonic acid receptor COI1: delayed abscission, meristem arrest and apical dominance.

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