Translatome analyses capture of opposing tissue-specific brassinosteroid signals orchestrating root meristem differentiation.

ABSTRACT: The mechanisms ensuring balanced growth remain a critical question in developmental biology. In plants, this balance relies on spatiotemporal integration of hormonal signaling pathways, but the understanding of the precise contribution of each hormone is just beginning to take form. Brassinosteroid (BR) hormone is shown here to have opposing effects on root meristem size, depending on its site of action. BR is demonstrated to both delay and promote onset of stem cell daughter differentiation, when acting in the outer tissue of the root meristem, the epidermis, and the innermost tissue, the stele, respectively. To understand the molecular basis of this phenomenon, a comprehensive spatiotemporal translatome mapping of Arabidopsis roots was performed. Analyses of wild type and mutants featuri

SUBMITTER: Vragovic K 

PROVIDER: S-EPMC4311806 | biostudies-literature | 2015 Jan

REPOSITORIES: biostudies-literature