Abstract
We generated γ-linolenic acid (GLA, C18:3Δ6,9,12)-producing transgenic Brassica napus transformed with McD6DES, the Δ6-desaturase gene identified from pike eel (Muraenesox cinereus) under the control of the seed-specific vicilin promoter. Seed-specific expression of McD6DES in B. napus produced up to 8.4% of GLA by creating a double bond at the sixth position from the carboxyl end of linoleic acid (LA, C18:2Δ9,12) in seeds. These results demonstrate that McD6DES expression enables to reconstitute in polyunsaturated fatty acid biosynthetic pathways, highlighting the potential of GLA biosynthesis as a target for metabolic engineering of oilseed crops.
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