Abscisic acid inhibits hypocotyl elongation acting on gibberellins, DELLA proteins and auxin

Hypocotyl elongation of Arabidopsis seedlings is influenced by light and numerous growth factors. Light induces inhibition of hypocotyl elongation (photomorphogenesis), whereas in the dark hypocotyl elongation is promoted (skotomorphogenesis). Abscisic acid (ABA) plays a major role in inhibition of...

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Detalles Bibliográficos
Autores principales: Lorrai, Riccardo, Boccaccini, Alessandra, Ruta, Veronica, Possenti, Marco, Costantino, Paolo, Vittorioso, Paola
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2018
Materias:
Short Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6204436/
https://www.ncbi.nlm.nih.gov/pubmed/30386544
http://dx.doi.org/10.1093/aobpla/ply061
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author Lorrai, Riccardo
Boccaccini, Alessandra
Ruta, Veronica
Possenti, Marco
Costantino, Paolo
Vittorioso, Paola
author_facet Lorrai, Riccardo
Boccaccini, Alessandra
Ruta, Veronica
Possenti, Marco
Costantino, Paolo
Vittorioso, Paola
author_sort Lorrai, Riccardo
collection PubMed
description Hypocotyl elongation of Arabidopsis seedlings is influenced by light and numerous growth factors. Light induces inhibition of hypocotyl elongation (photomorphogenesis), whereas in the dark hypocotyl elongation is promoted (skotomorphogenesis). Abscisic acid (ABA) plays a major role in inhibition of hypocotyl elongation, but the molecular mechanism remains unclear. We investigated the effect of ABA during photo- and skotomorphogenesis, making use of appropriate mutants, and we show that ABA negatively controls hypocotyl elongation acting on gibberellin (GA) metabolic genes, increasing the amount of the DELLA proteins GAI and RGA, thus affecting GA signalling, and (ultimately) repressing auxin biosynthetic genes.
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spelling pubmed-62044362018-10-31 Abscisic acid inhibits hypocotyl elongation acting on gibberellins, DELLA proteins and auxin Lorrai, Riccardo Boccaccini, Alessandra Ruta, Veronica Possenti, Marco Costantino, Paolo Vittorioso, Paola AoB Plants Short Communication Hypocotyl elongation of Arabidopsis seedlings is influenced by light and numerous growth factors. Light induces inhibition of hypocotyl elongation (photomorphogenesis), whereas in the dark hypocotyl elongation is promoted (skotomorphogenesis). Abscisic acid (ABA) plays a major role in inhibition of hypocotyl elongation, but the molecular mechanism remains unclear. We investigated the effect of ABA during photo- and skotomorphogenesis, making use of appropriate mutants, and we show that ABA negatively controls hypocotyl elongation acting on gibberellin (GA) metabolic genes, increasing the amount of the DELLA proteins GAI and RGA, thus affecting GA signalling, and (ultimately) repressing auxin biosynthetic genes. Oxford University Press 2018-10-05 /pmc/articles/PMC6204436/ /pubmed/30386544 http://dx.doi.org/10.1093/aobpla/ply061 Text en © The Author(s) 2018. Published by Oxford University Press on behalf of the Annals of Botany Company. http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Short Communication
Lorrai, Riccardo
Boccaccini, Alessandra
Ruta, Veronica
Possenti, Marco
Costantino, Paolo
Vittorioso, Paola
Abscisic acid inhibits hypocotyl elongation acting on gibberellins, DELLA proteins and auxin
title Abscisic acid inhibits hypocotyl elongation acting on gibberellins, DELLA proteins and auxin
title_full Abscisic acid inhibits hypocotyl elongation acting on gibberellins, DELLA proteins and auxin
title_fullStr Abscisic acid inhibits hypocotyl elongation acting on gibberellins, DELLA proteins and auxin
title_full_unstemmed Abscisic acid inhibits hypocotyl elongation acting on gibberellins, DELLA proteins and auxin
title_short Abscisic acid inhibits hypocotyl elongation acting on gibberellins, DELLA proteins and auxin
title_sort abscisic acid inhibits hypocotyl elongation acting on gibberellins, della proteins and auxin
topic Short Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6204436/
https://www.ncbi.nlm.nih.gov/pubmed/30386544
http://dx.doi.org/10.1093/aobpla/ply061
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