MYB — Triticum aestivum

Summary

TRAESCS3B02G151500 (TaMYB, also known as TaASG4 and TaREV3-3B) on wheat chromosome 3B encodes a protein with a MYB domain, SANT domain, and homeodomain-like superfamily, with DNA-binding, RNA-polymerase-binding and transcriptional co-regulator activities, localised to the nucleus. The gene is associated with photoperiodism, circadian regulation of gene expression, photoprotection, and upregulation of circadian rhythm, as well as brassinosteroid, cuticle, fructan, glutamate, glucose, glutathione, phosphoglyceride and sulfur metabolism, antifungal innate immune response, lipid transport, protein targeting, chromosome localisation, DNA-templated transcription elongation and pre-harvest sprouting. It is linked to heading time, grain yield per plant, thousand-grain weight, test weight, seed protein content, grain iron and zinc content, anther extrusion, peduncle length, radiation use efficiency, fruiting efficiency, stand establishment, plant vigor, root volume, leaf width, drought sensitivity, temperature stress response, and coleoptile, leaf, pericarp and seed coat color. Studies of related genes in other species connect the family to circadian clock function, photoperiodic flowering, thermotolerance, cold and heat stress responses, anthocyanin and phenylpropanoid biosynthesis, hypocotyl elongation, leaf area, biomass and cell size.