Reevaluation of Abscisic Acid-Binding Assays Shows That G-Protein-Coupled Receptor2 Does Not Bind Abscisic Acid

Abstract

The phytohormone abscisic acid (ABA) plays an integral role in plant growth and development, but only recently have putative receptors been identified ([Razem et al., 2006][1]; [Shen et al., 2006][2]; [Liu et al., 2007][3]; [Pandey et al., 2009][4]). Our results, however, suggest that the putative