MYB — Sorghum bicolor

Summary

SbMYB (SORBI_3009G154200) on sorghum chromosome 9 encodes a DNA-binding transcription factor with a Myb/SANT domain, capable of homodimerization and zinc binding. The gene is associated with negative regulation of abscisic acid biosynthesis, cellular auxin homeostasis, pigmentation, phenylpropanoid metabolism, and green leaf volatile biosynthesis. It has been linked to grain color, grain yield, plant height, chlorophyll content, photosynthetic rate, photochemical quenching, proline content, drought tolerance, and salt response. Localization evidence connects the product to mitochondria and the cytosol. Related genes in other species link the family to anther development, reproductive development, ABA sensitivity, seed lipid biosynthesis, and salt stress tolerance, as well as anthesis-silking interval and various grain and plant architecture traits.