MYB — Brachypodium distachyon

Summary

BdMYB (BRADI_2G23978V3) on chromosome 2 of Brachypodium distachyon encodes a protein with Myb and SANT domains and DNA binding transcription factor activity, transcription cis-regulatory region binding, protein homodimerization activity, and zinc binding. The gene is associated with negative regulation of abscisic acid biosynthesis, alcohol and fatty alcohol anabolism, regulation of secondary metabolism, cellular auxin homeostasis, stomatal closure, anther development, lateral root development, and response to salt and sucrose. It has been linked to leaf dry weight, photosynthetic rate, drought tolerance, and stripe rust. Associations with stress, biotic stress, drought stress, reproductive development, ABA sensitivity, seed lipid biosynthesis, and salt stress tolerance have been noted. The protein localizes to mitochondria, cytosol, and cytoplasm. Studies of related genes in other species link the family to panicle dry weight, grain iron and zinc content, flavonoid content, and enhanced salt tolerance with increased ABA content.