FAD3 — Camelina sativa

Summary

CsFAD3 (CSA07G013360) on Camelina sativa chromosome 7 encodes a fatty acid desaturase 3, an acyl-lipid omega-6 and omega-3 desaturase with cytochrome B5 activity, also annotated as a delta12 fatty acid acetylenase and linolenate delta15 desaturase. The gene is associated with fatty acid elongation, lipogenesis, unsaturated fatty acid anabolism, seed coat and endosperm development, cold acclimation, and lignin anabolism. It localises to chloroplast and ER membranes. CsFAD3 is linked to alpha-linolenic and linoleic acid content, seed viability, seed size, photosynthetic rate, water use efficiency, stomatal resistance, temperature stress responses, disease tolerance, and aphid response. Studies of related genes in other species connect the family to linolenic acid content, cold tolerance, aphid resistance, and salt tolerance.