MYB — Brachypodium distachyon

Summary

BdMYB (BRADI_5G22984V3) on chromosome 5 of Brachypodium distachyon encodes a protein with a MYB domain, SANT/Myb domain, and homeodomain-like superfamily, with RNA polymerase binding, sequence-specific DNA binding, and transcriptional co-regulator activities. It is associated with circadian rhythm regulation, including entrainment, clock gene expression, and photoperiodic flowering, as well as stomatal closure, anther development, chlorophyll fluorescence, MAPK cascade, virus-induced PTGS, and regulation of secondary metabolism and alcohol anabolism. The gene is linked to leaf dry weight, photosynthetic rate, flowering time, drought tolerance, stripe rust, and temperature stress response. It is associated with biomass, leaf area, cell size, hypocotyl elongation, photomorphogenesis, anthocyanin and phenylpropanoid biosynthesis, and responses to cold, heat, salt, and osmotic stress. Studies of related genes in other species link the family to circadian rhythms, heat shock response, and nuclear transport.