PAP1 — Brassica juncea

Summary

BJUA07G28310S (PAP1) on Indian mustard chromosome A07 encodes a MYB-domain transcription factor with DNA-binding, transcription factor, protein dimerization, ubiquitin ligase, and protein kinase activities. It is associated with regulation of flavonoid, proanthocyanidin, and anthocyanin biosynthesis, pigmentation, seed growth, mucilage production, 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, seed longevity, cadmium and iron concentration, phosphorus uptake, lignin biosynthesis, starch grain synthesis, brassinosteroid content, and responses to light quality, UV, and viral disease. It localizes to the nucleus, root hair, and ubiquitin ligase complexes. Related genes in other species are linked to anthocyanin pigmentation, trichome and root hair differentiation, light responsiveness, and stress tolerance.