PSY — Brassica napus

Summary

BnPSY (DARMORV10_C02P08870.1) on chromosome C02 of oilseed rape encodes a protein with squalene/phytoene synthase domains and squalene synthase, phytoene synthase, dimethylallyltransferase and farnesyltranstransferase activities. This gene is associated with phytoene anabolism, carotenoid anabolism, chromoplast organization, chloroplast organization, seed development, embryo development ending in seed dormancy, de-etiolation, circadian rhythm, immune response, and response to light stimulus. The encoded protein localizes to plastids, chromoplast stroma, etioplasts, chloroplast membranes, mitochondria, cytosol and nucleus. Associations with agronomic traits include carotenoid content, alpha carotene content, leaf color, photosynthetic rate, chloroplast development, cell elongation, flowering time, and drought tolerance. Studies of related genes in other species link the family to carotenoid accumulation, provitamin A carotenoid content, thermotolerance, leaf virescence, and fruit development.