PSY — Brassica juncea

Summary

BJUA02G36760S (BjPSY) encodes a protein with squalene/phytoene synthase activity and other isoprenoid synthase domains. In Indian mustard (Brassica juncea), this gene is associated with carotenoid and chlorophyll anabolism, pigment metabolism, chromoplast and chloroplast organization, de-etiolation, and response to light stimulus. It has been connected to alpha carotene, carotenoid, chlorophyll, and flavonoid content, as well as photosynthetic rate, chloroplast development, drought tolerance, flowering time, and stomatal opening. The encoded protein localizes to plastids, chloroplast membranes, chromoplast stroma, etioplasts, mitochondria, cytosol, and nucleus. Studies of related genes in other species link the family to carotenoid accumulation, thermotolerance, abscisic acid content, and provitamin A carotenoid content.