Sporophytic control of pollen meiotic progression is mediated by tapetum expression of ABORTED MICROSPORES.

ABSTRACT: Pollen development is dependent on the tapetum, a sporophytic anther cell layer surrounding the microspores that functions in pollen wall formation but is also essential for meiosis-associated development. There is clear evidence of crosstalk and co-regulation between the tapetum and microspores, but how this is achieved is currently not characterized. ABORTED MICROSPORES (AMS), a tapetum transcription factor, is important for pollen wall formation, but also has an undefined role in early pollen development. We conducted a detailed investigation of chromosome behaviour, cytokinesis, radial microtubule array (RMA) organization, and callose formation in the ams mutant. Early meiosis initiates normally in ams, shows delayed progression after the pachytene stage, and then fails during late mei

SUBMITTER: Tidy AC 

PROVIDER: S-EPMC9467646 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature