MYB — Oryza sativa Japonica

Summary

OS05G0442400 (MYB, also known as MID1 or DIV2) encodes a protein with a Myb domain and SANT domain, and has DNA binding, transcription cis-regulatory region binding, protein homodimerization, and zinc binding activities. In rice, this gene is associated with transcriptional regulation, anther development, and yield. It is linked to diverse biological processes including appendage development, anthocyanin breakdown, zeaxanthin anabolism, regulation of secondary growth, wax metabolism, and negative regulation of abscisic acid biosynthesis. The encoded protein localizes to mitochondria and the cytosol. Associations with agronomically important traits include panicle dry weight, grain shape, grain yield per plant, amylose content, leaf and hull color, seed shattering, drought sensitivity, salt response, heat tolerance, and photosynthetic rate. Studies of related genes in other species link the family to grain iron and zinc content, nitrogen content, and stress tolerance, though these functions are not established for this rice gene.