MYB1 — Brassica juncea

Summary

BJUB05G11380S (BjPAP1, also known as MYB1, MYB75, MYB90, and other synonyms) on Indian mustard chromosome B05 encodes a Myb-family transcription factor with DNA-binding, transcription factor, protein dimerization, ubiquitin ligase, and protein kinase activities. It is associated with the regulation of flavonoid, proanthocyanidin, and anthocyanin biosynthesis, as well as pigmentation, seed growth, mucilage extrusion from the seed coat, trichome spacing, epidermal cell fate specification, and sucrose-mediated signaling. The gene is linked to numerous traits including flower and seed coat color, leaf color and trichome density, root epidermal cell length, light sensitivity responses, flavonoid content, seed longevity, cadmium and iron concentration, phosphorus uptake, lignin biosynthesis, and viral disease response. It localizes to the nucleus, root hair, and ubiquitin ligase complexes. Related genes in other species are linked to anthocyanin pigmentation, iron accumulation, trichome and root hair differentiation, salt stress tolerance, and circadian rhythm.