MYB80 homologues in Arabidopsis, cotton and Brassica: regulation and functional conservation in tapetal and pollen development.

ABSTRACT:

Background

The Arabidopsis AtMYB80 transcription factor regulates genes involved in pollen development and controls the timing of tapetal programmed cell death (PCD). Downregulation of AtMYB80 expression precedes tapetal degradation. Inhibition of AtMYB80 expression results in complete male sterility. Full-length AtMYB80 homologs have been isolated in wheat, rice, barley and canola (C genome).

Results

The complete sequences of MYB80 genes from the Brassica. napus (A gene), B. juncea (A gene), B. oleracea (C gene) and the two orthologs from cotton (Gossypium hirsutum) were determined. The deduced amino acid sequences possess a highly conserved MYB domain, 44-amino acid region and 18-amino acid C-terminal sequence. The cotton MYB80 protein can fully restore fertility of the at

SUBMITTER: Xu Y 

PROVIDER: S-EPMC4205283 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature