SOS 2-LIKE PROTEIN KINASE 5 , an SNF 1-RELATED PROTEIN KINASE 3-Type Protein Kinase , Is Important for Abscisic Acid Responses in Arabidopsis through Phosphorylation of ABSCISIC ACID-INSENSITIVE 51 [ OPEN ]

State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Science, Northwest A&F University, Yangling, Shaanxi 712100, China (X.Z., H.H., Y.B., W.Z., F.Y., M.W., J.H., H.X., A.G., H.Z., C.C., C.G.X.); State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China (Yu.Z., Y.Q., F.Z., Ya.Z., Y.Y., Y.G.); and School of Plant Sciences, University of Arizona, Tucson, Arizona 85721 (K.S.S.)