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          Institute: MPI für Entwicklungsbiologie     Collection: Abteilung 6 - Molecular Biology (D. Weigel)     Display Documents



ID: 16393.0, MPI für Entwicklungsbiologie / Abteilung 6 - Molecular Biology (D. Weigel)
A thermosensory pathway controlling flowering time in Arabidopsis thaliana
Authors:Blazquez, M. A.; Ahn, J. H.; Weigel, D.
Language:English
Date of Publication (YYYY-MM-DD):2003-02
Title of Journal:Nature Genetics
Journal Abbrev.:Nature Genet.
Volume:33
Issue / Number:2
Start Page:168
End Page:171
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:Onset of flowering is controlled by environmental signals such as light and temperature. Molecular-genetic studies in Arabidopsis thaliana have focused on daily light duration, or photoperiod, and transient exposure to winter-like temperatures, or vernalizationl. Yet ambient growth temperature, which is strongly affected by current changes in global climate(2), has been largely ignored. Here, we show that genes of the autonomous pathway, previously thought only to act independently of the environment as regulators of the floral repressor FLC (ref. 1), are centrally involved in mediating the effects of ambient temperature. In contrast to wild-type plants and those mutant in other pathways, autonomous-pathway mutants flower at the same time regardless of ambient temperature. In contrast, the exaggerated temperature response of cryptochrome- 2 mutants is caused by temperature-dependent redundancy with the phytochrome A photoreceptor. As with vernalization and photoperiod, ambient temperature ultimately affects expression of the floral pathway integrator FT.
Comment of the Author/Creator:Date: 2003, FEB
External Publication Status:published
Document Type:Article
Affiliations:MPI für Entwicklungsbiologie/Abteilung 6 - Molekulare Biologie (Detlef Weigel)
External Affiliations:Salk Inst Biol Studies, Plant Biol Lab, La Jolla, CA 92037 USA; Salk Inst Biol Studies, Plant Biol Lab, La Jolla, CA 92037 USA; UPV, CSIC, Inst Biol Mol & Celular Plantas, Valencia 46022, Spain; Korea Univ, Grad Sch Biotechnol, Seoul 136701, South Korea; Max Planck Inst Dev Biol, Dept Biol Mol, D-72076 Tubingen, Germany
Identifiers:ISI:000180773700014 [ID No:1]
ISSN:1061-4036 [ID No:2]
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