FAE1 — Brassica juncea

Summary

BjFAE1 (BJUA08G14230S) on chromosome A08 of Indian mustard encodes a 3-ketoacyl-CoA synthase, a member of the FAE1-type polyketide synthase family with acyltransferase and protein homodimerization activity. The gene is associated with fatty acid elongation, very-long-chain fatty acid metabolism, lipogenesis, and polyketide and flavonoid anabolism. It localizes to the endoplasmic reticulum and membrane. BjFAE1 is associated with seed oil content and composition, including eicosenoic and very long chain omega-7 fatty acid levels, as well as trichome development. Associations with protein content, water use efficiency, and drought tolerance have also been noted. Studies of related genes in other species link the FAE1 family to erucic acid content, very-long-chain fatty acid accumulation, and wax ester production, with further connections to seed weight, size, and plant height.