MYB — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.7HG0736900 (HvMYB) on barley chromosome 7H encodes a protein with Myb and SANT domains and has DNA-binding, RNA polymerase-binding, and transcriptional co-regulator activities. This nuclear protein is associated with circadian rhythm regulation, including circadian gene expression, clock entrainment, and photoperiodic flowering time. It is linked to grain yield, grain weight, grain length, seed weight, grain size, photosynthetic rate, chlorophyll content, and stomatal resistance. The gene is also associated with drought tolerance, temperature stress, fungal disease response, and cold and heat stress responses. Additional associations include proanthocyanidin and anthocyanin biosynthesis, pigmentation, starch metabolism, auxin homeostasis, endosperm development, autophagy, and plant growth. Related genes in other species link the family to circadian clock period, hypocotyl elongation, cell size, and thermotolerance.