PAP1 — Brassica napus

Summary

BnPAP1 (also known as PAP1-D, MYB90, and MYB75) on chromosome C06 of oilseed rape encodes a DNA-binding transcription factor with RNA polymerase II-specific activity, protein dimerization activity, and ubiquitin ligase activity. This gene is associated with the regulation of flavonoid, proanthocyanidin, and anthocyanin anabolism, as well as pigmentation, petal development, seed growth, mucilage extrusion from the seed coat, trichome spacing, and responses to UV-A light and sucrose-mediated signaling. It is linked to traits including flower and seed coat color, flavonoid content, leaf trichome density, seed longevity, root system morphology, light sensitivity, cadmium and iron concentration, phosphorus uptake, and viral disease response. Related genes in other species are associated with anthocyanin pigmentation, trichome and root hair differentiation, light responsiveness, and salt stress tolerance.