Expanded roles and divergent regulation of FAMA in Brachypodium and Arabidopsis stomatal development.

ABSTRACT: Stomata, cellular valves found on the surfaces of aerial plant tissues, present a paradigm for studying cell fate and patterning in plants. A highly conserved core set of related basic helix-loop-helix (bHLH) transcription factors regulates stomatal development across diverse species. We characterized BdFAMA in the temperate grass Brachypodium distachyon and found this late-acting transcription factor was necessary and sufficient for specifying stomatal guard cell fate, and unexpectedly, could also induce the recruitment of subsidiary cells in the absence of its paralogue, BdMUTE. The overlap in function is paralleled by an overlap in expression pattern and by unique regulatory relationships between BdMUTE and BdFAMA. To better appreciate the relationships among the Brachypodium stomatal b

SUBMITTER: McKown KH 

PROVIDER: S-EPMC9940870 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature