Patent ID: RE41139

Claim:
A method for producing stearidonic acid in a plant seed, said method comprising: growing a plant having integrated into its genome : a first DNA construct comprising, in the 5′ to 3′ direction of transcription, a promoter functional in a plant seed cell, a DNA sequence encoding a delta-six desaturase from the genus Mortierella , and a transcription termination region functional in a plant cell, a second DNA construct comprising, in the 5 ′ to 3 ′ direction of transcription, a promoter function in a plant seed cell, and a DNA sequence encoding a delta 15 desaturase, and a transcription termination region functional in a plant cell, and a third DNA construct comprising, in the 5 ′ to 3 ′ direction of transcription, a promoter functional in a plant seed cell, and a DNA sequence encoding a delta 12 desaturase, and a transcription termination region functional in a plant cell, and growing said plant under conditions whereby said delta-six desaturase , delta 15 desaturase and delta 12 desaturase is are expressed.