TT19 — Brassica napus

Summary

BnTT19 (also known as BnGSTF12) on chromosome A10 encodes a glutathione S-transferase (GST) of the Phi class, possessing glutathione transferase activity, glutathione binding, cation binding, and protein homodimerization activity. The gene is associated with anthocyanin breakdown and metabolism, regulation of flavonol and anthocyanin biosynthesis, and secondary metabolism including phenylpropanoid and flavonoid anabolism. It is linked to responses to xenobiotic stimuli, herbicides, hydrogen peroxide, and AOS, as well as photomorphogenesis, leaf formation, and sucrose metabolism. The product localizes to the tonoplast, cytoplasm, and nucleus. Associations with seed color, leaf color, anthocyanin content, and seed dormancy have been noted, along with phenotypes including anthocyanin and proanthocyanidin accumulation and transport. Studies of related genes in other species link the family to seed coat pigmentation, anthocyanin biosynthesis, and UV-B tolerance.