MYB64 and MYB119 are required for cellularization and differentiation during female gametogenesis in Arabidopsis thaliana.

ABSTRACT: In angiosperms, the egg cell forms within the multicellular, haploid female gametophyte. Female gametophyte and egg cell development occurs through a unique process in which a haploid spore initially undergoes several rounds of synchronous nuclear divisions without cytokinesis, resulting in a single cell containing multiple nuclei. The developing gametophyte then forms cell walls (cellularization) and the resulting cells differentiate to generate the egg cell and several accessory cells. The switch between free nuclear divisions and cellularization-differentiation occurs during developmental stage FG5 in Arabidopsis, and we refer to it as the FG5 transition. The molecular regulators that initiate the FG5 transition during female gametophyte development are unknown. In this study, we show u

SUBMITTER: Rabiger DS 

PROVIDER: S-EPMC3778002 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature