MYB — Zea mays

Summary

ZmMYB (ZM00001EB187260) on maize chromosome 4 encodes a protein with Myb and SANT domains, a homeodomain-like superfamily domain, and has sequence-specific DNA binding, transcription cis-regulatory region binding, RNA polymerase binding, and transcriptional co-regulator activities, and localises to the nucleus. The gene is associated with ear morphogenesis, cell dedifferentiation, pigment accumulation, phloem loading, and regulation of secondary metabolism, anabolism, and carbohydrate anabolism. It is linked to numerous agronomic traits including grain size, seed weight, ear diameter and length, cob diameter, leaf width and shape, root number, lignin, cellulose, starch, anthocyanin, flavonoid, and protein content, nitrogen content, potassium uptake, nitrate transport, photosynthetic rate, cold tolerance, heterosis, germination ratio, and callus induction. Studies of related genes in other species connect the family to circadian rhythm, photoperiodic flowering time, hypocotyl elongation, thermotolerance, and anthocyanin biosynthesis.