NPY genes and AGC kinases define two key steps in auxin-mediated organogenesis in Arabidopsis
作者： Y. Cheng , G. Qin , X. Dai , Y. Zhao
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摘要: Auxin is an essential regulator of plant organogenesis. Most key genes in auxin biosynthesis, transport, and signaling belong to gene families, making it difficult conduct genetic analysis action development. Herein we report the functional several members 2 families (NPY/ENP/MAB4 AGC kinases) auxin-mediated organogenesis their relationships with YUC family flavin monooxygenases that are for biosynthesis. We show 5 NPY (NPY1 NPY5) 4 kinases (PID, PID2, WAG1, WAG2) have distinct, yet overlapping, expression patterns. Disruption NPY1 does not cause obvious defects organogenesis, but npy1 npy3 npy5 triple mutants failed make flower primordia, a phenotype also observed when kinase PID compromised. Inactivation YUC1 YUC4 background phenocopies pid. Simultaneous disruption its 3 closest homologs (PID2, completely abolishes formation cotyledons, which pid double yuc1 yuc4 mutants. Our results demonstrate define steps pathway controls YUC-mediated Arabidopsis.
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