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AOBPreview published online on November 2, 2007
Annals of Botany, doi:10.1093/aob/mcm284
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© The Author 2007. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Botanical Briefing

Abscisic Acid Receptors: Multiple Signal-perception Sites

Xiao-Fang Wang and Da-Peng Zhang*

China State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100094, China

* For correspondence. E-mail zhangdp{at}sohu.net

Received: 3 August 2007    Returned for revision: 3 September 2007    Accepted: 8 October 2007   

Background and Aims: The phytohormone abscisic acid (ABA) plays a vital role in various aspects of plant growth and development and in adaptation of plants to various environmental stresses. Cell response to ABA is initiated by ABA perception with a cell receptor. Recently, three distinct ABA receptors have been identified, opening a door to uncover the initial events of ABA signal transduction. The aim of this Botanical Briefing is to present a perspective of the ABA receptors identified.

Scope: This Briefing offers an introduction to the three ABA receptors identified and an analysis of the complexity and multiplicity of ABA receptors, and provides some viewpoints on future research.

Key words: Abscisic acid receptors (ABA receptors), abscisic acid signalling, FCA (flowering time control protein A), ABAR (putative ABA receptor), CHLH (magnesium–protoporphyrin IX chelatase subunit H), GCR2 (G-protein-coupled receptor 2)


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