MYB — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.6HG0604260 (HvMYB) encodes a MYB-domain transcription factor with sequence-specific DNA binding, RNA polymerase binding, and transcriptional co-regulator activities, localising to the nucleus. In barley, HvMYB is associated with the regulation of circadian rhythm and gene expression, starch metabolism, proanthocyanidin biosynthesis, pigmentation, endosperm development, secondary growth, autophagy, the MAPK cascade, and green leaf volatile biosynthesis. It has been linked to grain yield, grain weight, grain size and length, seed weight, flowering time, photosynthetic rate, stomatal resistance, chlorophyll content, drought tolerance, temperature stress response, fungal disease response, and plant growth. Studies of related genes in other species connect the family to circadian clock function, photoperiodic flowering, thermotolerance, cold and heat stress responses, hypocotyl elongation, and biomass.