FAD2 — Daucus carota subsp. sativus

Summary

DCAR_027583 (DcFAD2) on carrot chromosome 8 encodes a fatty acid desaturase with acyl-lipid omega-6 desaturase, delta12 fatty acid acetylenase, omega-3 fatty acid desaturase, oleate D12-hydroxylase, and monooxygenase activities. It is associated with unsaturated fatty acid anabolism, fatty acid metabolism, and localises to the endoplasmic reticulum membrane. The gene is linked to alpha-linolenic acid, linoleic acid, and xanthophyll content, as well as temperature stress response, aphid response, water use efficiency, stomatal resistance, seed growth and development, disease tolerance, and plant growth traits. Phenotypic associations include aphid resistance, altered fatty acid composition, tocopherol deficiency, suppressed cold stress responses, punicic acid accumulation, seed oil melting point, and seed viability. Studies of related genes in other species link the family to oleic acid content, salt tolerance, and resistance to Botrytis cinerea.