JAGGED controls growth anisotropyand coordination between cell sizeand cell cycle during plant organogenesis.

ABSTRACT:

Background

In all multicellular organisms, the links between patterning genes, cell growth, cell cycle, cell size homeostasis, and organ growth are poorly understood, partly due to the difficulty of dynamic, 3D analysis of cell behavior in growing organs. A crucial step in plant organogenesis is the emergence of organ primordia from the apical meristems. Here, we combined quantitative, 3D analysis of cell geometry and DNA synthesis to study the role of the transcription factor JAGGED (JAG), which functions at the interface between patterning and primordium growth in Arabidopsis flowers.

Results

The floral meristem showed isotropic growth and tight coordination between cell volume and DNA synthesis. Sepal primordia had accelerated cell division, cell enlargement, anisotropic

SUBMITTER: Schiessl K 

PROVIDER: S-EPMC3471073 | biostudies-literature | 2012 Oct

REPOSITORIES: biostudies-literature