Arabidopsis lateral organ boundaries negatively regulates brassinosteroid accumulation to limit growth in organ boundaries.

ABSTRACT: Leaves and flowers begin life as outgrowths from the edges of shoot apical meristems. Stem cell divisions in the meristem center replenish cells that are incorporated into organ primordia at the meristem periphery and leave the meristem. Organ boundaries, regions of limited growth that separate forming organs from the meristem, serve to isolate these two domains and are critical for coordination of organogenesis and meristem maintenance. Boundary formation and maintenance are poorly understood processes, despite the identification of a number of boundary-specific transcription factors. Here we provide genetic and biochemical evidence that the Arabidopsis thaliana transcription factor lateral organ boundaries (LOB) negatively regulates accumulation of the plant steroid hormone brassinostero

SUBMITTER: Bell EM 

PROVIDER: S-EPMC3529045 | biostudies-literature | 2012 Dec

REPOSITORIES: biostudies-literature