NPY genes and AGC kinases define two key steps in auxin-mediated organogenesis in Arabidopsis.

ABSTRACT: Auxin is an essential regulator of plant organogenesis. Most key genes in auxin biosynthesis, transport, and signaling belong to gene families, making it difficult to conduct genetic analysis of auxin action in plant development. Herein we report the functional analysis of several members of 2 gene families (NPY/ENP/MAB4 genes and AGC kinases) in auxin-mediated organogenesis and their relationships with the YUC family of flavin monooxygenases that are essential for auxin biosynthesis. We show that 5 NPY genes (NPY1 to NPY5) and 4 AGC kinases (PID, PID2, WAG1, and WAG2) have distinct, yet overlapping, expression patterns. Disruption of NPY1 does not cause obvious defects in organogenesis, but npy1 npy3 npy5 triple mutants failed to make flower primordia, a phenotype that is also observed wh

SUBMITTER: Cheng Y 

PROVIDER: S-EPMC2634868 | biostudies-literature | 2008 Dec

REPOSITORIES: biostudies-literature