PSY — Brassica oleracea

Summary

BoPSY (BOLC102_C02P009240.1_BOLC102_V1) on cabbage chromosome 2 encodes a protein with squalene/phytoene synthase and isoprenoid synthase domains and squalene synthase, phytoene synthase, dimethylallyltransferase, and farnesyltranstransferase activities. The gene is associated with phytoene anabolism, carotene anabolism, carotenoid metabolism and breakdown, chromoplast and chloroplast organisation, photoprotection, de-etiolation, response to light stimulus, embryo development ending in seed dormancy, and protein stabilization. It has been linked to alpha-carotene content, carotenoid content, photosynthetic rate, chloroplast development, cell elongation, flowering time, and drought tolerance. The encoded protein localises to plastid, chloroplast membrane, chromoplast stroma, etioplast, mitochondria, cytosol, and nucleus. Studies of related genes in other species link the family to carotenoid accumulation, provitamin A carotenoid content, thermotolerance, flowering time, and abscisic acid biosynthesis.