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

Détails

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Etat: Public
Version: Final published version
ID Serval
serval:BIB_39C03602E3F2
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Abscisic acid inhibits hypocotyl elongation acting on gibberellins, DELLA proteins and auxin.
Périodique
AoB PLANTS
Auteur(s)
Lorrai R., Boccaccini A., Ruta V., Possenti M., Costantino P., Vittorioso P.
ISSN
2041-2851 (Print)
Statut éditorial
Publié
Date de publication
2018
Peer-reviewed
Oui
Volume
10
Numéro
5
Pages
ply061
Langue
anglais
Résumé
Hypocotyl elongation of <i>Arabidopsis</i> 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.
Mots-clé
ABA, Arabidopsis, DELLA proteins, GA, PIF proteins, auxin, hypocotyl elongation
Pubmed
Web of science
Open Access
Oui
Création de la notice
29/11/2018 11:06
Dernière modification de la notice
20/08/2019 13:29
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