CHS — Brassica juncea

Summary

BJUA02G38420S (BjCHS) encodes a chalcone synthase, a type-III polyketide synthase bearing chalcone/stilbene synthase and thiolase-like domains. The gene is associated with multiple enzyme activities including chalcone isomerase, naringenin-chalcone synthase, flavanone 4-reductase, dihydroflavanol 4-reductase, flavonol synthase, and SUMO transferase activities, as well as kinase and protein binding. BjCHS is linked to pigment metabolism, chalcone and flavonol biosynthesis, pigmentation, anthocyanin regulation, and responses to UV light, gravity, and auxin transport. It localizes to the cytosol, nucleus, endoplasmic reticulum, and tonoplast. Associations with seed color, flavonoid content, anthocyanin accumulation, seed weight, drought tolerance, salt stress tolerance, root length, flowering time, photosynthetic rate, and heterosis have been observed. Studies of related genes in other species connect the family to flavonoid production, UV-B sensitivity, male fertility, and defense responses.