Regulation of cell divisions and differentiation by MALE STERILITY32 is required for anther development in maize.

ABSTRACT: Male fertility in flowering plants relies on proper division and differentiation of cells in the anther, a process that gives rise to four somatic layers surrounding central germinal cells. The maize gene male sterility32 (ms32) encodes a basic helix-loop-helix (bHLH) transcription factor, which functions as an important regulator of both division and differentiation during anther development. After the four somatic cell layers are generated properly through successive periclinal divisions, in the ms32 mutant, tapetal precursor cells fail to differentiate, and, instead, undergo additional periclinal divisions to form extra layers of cells. These cells become vacuolated and expand, and lead to failure in pollen mother cell development. ms32 expression is specific to the pre-meiotic anthers

SUBMITTER: Moon J 

PROVIDER: S-EPMC4239027 | biostudies-literature | 2013 Nov

REPOSITORIES: biostudies-literature