The R2R3 MYB transcription factors FOUR LIPS and MYB88 regulate female reproductive development.

ABSTRACT: Gamete formation is an important step in the life cycle of sexually reproducing organisms. In flowering plants, haploid spores are formed after the meiotic division of spore mother cells. These spores develop into male and female gametophytes containing gametes after undergoing mitotic divisions. In the female, the megaspore mother cell undergoes meiosis forming four megaspores, of which one is functional and three degenerate. The megaspore then undergoes three mitotic cycles thus generating an embryo sac with eight nuclei. The embryo sac undergoes cellularization to form the mature seven-celled female gametophyte. Entry into and progression through meiosis is essential for megasporogenesis and subsequent megagametogenesis, but control of this process is not well understood. FOUR LIPS (FLP

SUBMITTER: Makkena S 

PROVIDER: S-EPMC3444271 | biostudies-literature | 2012 Sep

REPOSITORIES: biostudies-literature