Phytochrome interacting factors 4 and 5 control seedling growth in changing light conditions by directly controlling auxin signaling.

Détails

Ressource 1Télécharger: BIB_0DD28C80F89C.P001.pdf (2517.49 [Ko])
Etat: Serval
Version: Author's accepted manuscript
ID Serval
serval:BIB_0DD28C80F89C
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Phytochrome interacting factors 4 and 5 control seedling growth in changing light conditions by directly controlling auxin signaling.
Périodique
Plant Journal
Auteur(s)
Hornitschek P., Kohnen M.V., Lorrain S., Rougemont J., Ljung K., López-Vidriero I., Franco-Zorrilla J.M., Solano R., Trevisan M., Pradervand S., Xenarios I., Fankhauser C.
ISSN
1365-313X (Electronic)
ISSN-L
0960-7412
Statut éditorial
Publié
Date de publication
2012
Volume
71
Numéro
5
Pages
699-711
Langue
anglais
Résumé
Plant growth is strongly influenced by the presence of neighbors that compete for light resources. In response to vegetational shading shade-intolerant plants such as Arabidopsis display a suite of developmental responses known as the shade-avoidance syndrome (SAS). The phytochrome B (phyB) photoreceptor is the major light sensor to mediate this adaptive response. Control of the SAS occurs in part with phyB, which controls protein abundance of phytochrome-interacting factors 4 and 5 (PIF4 and PIF5) directly. The shade-avoidance response also requires rapid biosynthesis of auxin and its transport to promote elongation growth. The identification of genome-wide PIF5-binding sites during shade avoidance revealed that this bHLH transcription factor regulates the expression of a subset of previously identified SAS genes. Moreover our study suggests that PIF4 and PIF5 regulate elongation growth by controlling directly the expression of genes that code for auxin biosynthesis and auxin signaling components.
Mots-clé
shade avoidance, phytochrome, phytochrome-interacting factor, auxin, ChIP sequencing, Arabidopsis thaliana
Pubmed
Web of science
Open Access
Oui
Création de la notice
11/06/2012 15:10
Dernière modification de la notice
08/05/2019 14:24
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