PAP1 — Brassica napus

Summary

BnPAP1 (also known as PAP1-D, MYB90, or MYB75) on chromosome A02 encodes a Myb-domain transcription factor with DNA-binding, transcription factor, and protein dimerization activities, and is additionally annotated with ubiquitin ligase and protein kinase functions. In oilseed rape, BnPAP1 is associated with the regulation of flavonoid, proanthocyanidin, and anthocyanin metabolism, pigment and mucilage biosynthesis, seed growth, petal development, trichome spacing, and responses to UV-A light and sucrose signaling. It localizes to the nucleus, root hairs, and ubiquitin ligase complexes. The gene is linked to numerous traits including flower and seed coat color, flavonoid content, seed longevity, root and leaf morphology, light sensitivity, nutrient responses, and stress tolerance. Related genes in other species are associated with anthocyanin pigmentation, trichome and root hair differentiation, and responses to light, salt, and phosphate deficiency.