MYB — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.1HG0074910 (HvMYB) encodes a MYB-domain transcription factor with DNA-binding, protein homodimerization, and zinc-binding activities. In barley, it is associated with negative regulation of abscisic acid biosynthesis, proanthocyanidin anabolism, cellular auxin homeostasis, pigmentation, starch metabolism, and determination of dorsoventral asymmetry. The gene has been connected to grain weight, grain length, grain size, grain yield, seed weight, photosynthetic rate, chlorophyll content, stomatal resistance, drought tolerance, and fungal disease response. It is also linked to stress responses, including drought, salt, and abiotic stress, as well as reproductive development, ABA sensitivity, and seed lipid biosynthesis. The protein localizes to mitochondria, cytosol, and cytoplasm. Studies of related genes in other species associate the family with yield, development, anther traits, and enhanced salt tolerance with increased ABA content.