PAP1 — Brassica oleracea var. botrytis

Summary

BoPAP1 (also known as BoMYB113, BoPAP2, BoMYB90, BoMYB75) on cauliflower chromosome 2 encodes a Myb-domain transcription factor with DNA-binding, protein-dimerization, ubiquitin-ligase and protein-kinase activities. It is associated with the regulation of flavonoid, proanthocyanidin, anthocyanin and pigment biosynthesis, as well as sucrose-mediated signaling, trichome spacing, epidermal cell fate specification, seed growth, mucilage extrusion from the seed coat, and circadian rhythm. The gene is linked to numerous traits including flavonoid content, seed coat color, leaf trichome density, root epidermal cell length, light sensitivity (far-red, blue, red, UV-B), cadmium and iron concentration, phosphorus uptake, seed longevity, lignin biosynthesis, photoperiod-sensitive flowering time, and viral disease response. Related genes in other species are linked to anthocyanin pigmentation, trichome and root hair differentiation, light responsiveness, salt stress tolerance, and iron accumulation.