Modulation of Abscisic Acid Signaling in Vivo by an Engineered Receptor-Insensitive Protein

European Molecular Biology Laboratory, Grenoble Outstation and Unit of Virus Host-Cell Interactions,Universite´ Joseph Fourier-EMBL-Centre National de la Recherche Scientifique, 38042 Grenoble cedex 9,France (F.D., K.B., J.A.M.); Instituto de Biologi´a Molecular y Celular de Plantas, Consejo Superior deInvestigaciones Cienti ´ficas-Universidad Politecnica de Valencia, ES–46022 Valencia, Spain (R.A., J.S., M.-G.G.,L.R., S.R., P.L.R.); and Department of Botany and Plant Sciences, Center for Plant Cell Biology, University ofCalifornia, Riverside, California 92521 (S.-Y.P., S.R.C.)

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