MYB4 — Oryza sativa Indica Group

Summary

BGIOSGA022168 (MYB4) on chromosome 6 of Indica rice encodes a R2R3-MYB transcription factor with a Myb DNA-binding domain. The protein localises to the nucleus and exhibits sequence-specific DNA binding and transcription regulatory activity. MYB4 is associated with the shikimate pathway, pigmentation, regulation of lignin anabolism, green leaf volatile biosynthesis, anthocyanin anabolism, circadian rhythm, response to wounding and cold, and both up- and down-regulation of transcription. It has been linked to grain length, grain size, hull color, and cold tolerance. Studies of related genes in other species connect the family to traits including lignin and flavonoid content, leaf morphology, seed weight and size, grain number, chlorophyll content, heat tolerance, and heterosis.