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Review
. 2008 Oct;11(5):474-8.
doi: 10.1016/j.pbi.2008.06.014. Epub 2008 Sep 4.

The ABA receptors -- we report you decide

Peter McCourt  1 , Robert Creelman
Affiliations
Review

The ABA receptors -- we report you decide

Peter McCourt et al. Curr Opin Plant Biol. 2008 Oct.

Abstract

The plant hormone abscisic acid (ABA) has been implicated in a variety of physiological responses ranging from seed dormancy to stomatal conductance. Recently, three groups have reported the molecular identification of three disparate ABA receptors. Unlike the identification of other hormone receptors, in these three cases high affinity binding to ABA rather than the isolation of ABA insensitive mutants led to these receptor genes. Interestingly, two of the receptors encode genes involved in floral timing and chlorophyll biosynthesis, which are not considered traditional ABA responses. And the third receptor has been clouded in issues of its molecular identity. To clearly determine the roles of these genes in ABA perception it will require placing of these ABA-binding proteins into the rich ABA physiological context that has built up over the years.

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