Comparison of the Delta(12) fatty acid desaturase gene between high-oleic and normal-oleic peanut genotypes.

Delta(12) fatty acid desaturase gene has been targeted as a logical candidate controlling the high oleate trait in peanut seeds. By RT-PCR method, the full-length cDNAs of Delta(12) fatty acid desaturase gene were isolated from peanut (Arachis hypogaea L.) genotypes with normal and high ratio of oleic to linoleic acid, which were designated AhFAD2B and AhFAD2B', respectively.