GL1A — Triticum aestivum

Summary

TaGL1A (TRAESCS5D02G335700) on wheat chromosome 5D encodes a R2R3-MYB transcription factor with a Myb DNA-binding domain. The protein exhibits sequence-specific DNA binding, transcription cis-regulatory region binding, protein dimerization activity, and small GTPase binding. TaGL1A is associated with the regulation of flavonoid, flavonol, proanthocyanidin, anthocyanin, and lignin biosynthetic processes, as well as trichome differentiation and spacing, seed coat development, and the shikimate pathway. It localizes to the nucleus, cytoplasm, and root hairs. The gene has been linked to agronomic traits including fruiting efficiency, peduncle length, leaf trichome density, anther extrusion, grain length, heading time, harvest index, and responses to leaf rust and stripe rust. Studies of related genes in other species connect the family to UV-B tolerance, ABA response, salt stress, and lignin content.