MYB — Brachypodium distachyon

Summary

BdMYB (BRADI_1G34842V3) on Brachypodium distachyon chromosome 1 encodes a protein with Myb and SANT domains and DNA-binding, RNA polymerase-binding, and transcriptional co-regulator activities. It localises to the nucleus and is associated with circadian rhythm regulation, photoperiodic flowering, anther development, stomatal closure, and green leaf volatile biosynthesis. The gene is linked to chlorophyll fluorescence, MAPK cascade signalling, virus-induced PTGS, and positive regulation of transcription. Associations with agronomic traits include leaf dry weight, photosynthetic rate, flowering time, drought tolerance, stripe rust response, and temperature stress tolerance. Related phenotypes encompass biomass, leaf area, cell size, hypocotyl elongation, anthocyanin and phenylpropanoid biosynthesis, and altered responses to osmotic, salt, ABA, and hypoxia stress. Studies of related genes in other species link the family to circadian clock function, thermotolerance, cold stress response, and photomorphogenesis.