PSY — Brassica oleracea var. botrytis

Summary

BoPSY (BOLND125_C02P008770.1_BOLND125_V1) on cauliflower chromosome 2 encodes a phytoene synthase, an enzyme with squalene synthase, phytoene synthase, dimethylallyltransferase and farnesyltranstransferase activities, belonging to the trans-isoprenyl diphosphate synthase family. This gene is associated with carotenoid, beta-carotene and alpha-carotene content, as well as carotene metabolism and anabolism, chromoplast and chloroplast organization, de-etiolation, response to light, embryo development, and protein stabilization. It has been linked to photosynthetic rate, leaf curling, cell elongation, flowering time, and drought tolerance. The encoded protein localizes to plastids, chromoplast stroma, etioplasts, chloroplast membranes, mitochondria, cytosol, and nucleus. Studies of related genes in other species link the family to carotenoid accumulation, provitamin A carotenoid content, leaf virescence, thermotolerance, and flowering time.