The Arabidopsis SRR1 gene mediates phyB signaling and is required for normal circadian clock function.

Détails

ID Serval
serval:BIB_CBC2FB10AF79
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
The Arabidopsis SRR1 gene mediates phyB signaling and is required for normal circadian clock function.
Périodique
Genes and Development
Auteur(s)
Staiger D., Allenbach L., Salathia N., Fiechter V., Davis S.J., Millar A.J., Chory J., Fankhauser C.
ISSN
0890-9369[print], 0890-9369[linking]
Statut éditorial
Publié
Date de publication
01/2003
Volume
17
Numéro
2
Pages
256-268
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S. ; Research Support, U.S. Gov't, P.H.S.
Publication Status: ppublish
Résumé
Plants possess several photoreceptors to sense the light environment. In Arabidopsis cryptochromes and phytochromes play roles in photomorphogenesis and in the light input pathways that synchronize the circadian clock with the external world. We have identified SRR1 (sensitivity to red light reduced), a gene that plays an important role in phytochrome B (phyB)-mediated light signaling. The recessive srr1 null allele and phyB mutants display a number of similar phenotypes indicating that SRR1 is required for normal phyB signaling. Genetic analysis suggests that SRR1 works both in the phyB pathway but also independently of phyB. srr1 mutants are affected in multiple outputs of the circadian clock in continuous light conditions, including leaf movement and expression of the clock components, CCA1 and TOC1. Clock-regulated gene expression is also impaired during day-night cycles and in constant darkness. The circadian phenotypes of srr1 mutants in all three conditions suggest that SRR1 activity is required for normal oscillator function. The SRR1 gene was identified and shown to code for a protein conserved in numerous eukaryotes including mammals and flies, implicating a conserved role for this protein in both the animal and plant kingdoms.
Mots-clé
Amino Acid Sequence, Arabidopsis/genetics, Arabidopsis/physiology, Arabidopsis Proteins/genetics, Arabidopsis Proteins/physiology, Circadian Rhythm/genetics, Circadian Rhythm/physiology, Gene Expression Regulation, Plant, Genes, Plant, Molecular Sequence Data, Mutation, Photoreceptor Cells, Phylogeny, Phytochrome/genetics, Phytochrome/physiology, Phytochrome B, Sequence Homology, Amino Acid, Signal Transduction, Transcription Factors/genetics, Transcription Factors/physiology
Pubmed
Web of science
Open Access
Oui
Création de la notice
24/01/2008 16:29
Dernière modification de la notice
09/05/2019 1:18
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