Modification of fatty acid composition in tomato (Lycopersicon esculentum) by expression of a borage Δ6-desaturase
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The improvement of nutritional quality is one potential application for the genetic modification of plants. One possible target for such manipulation is the modification of fatty acid metabolism. In this work, expression of a borage Δ6-desaturase cDNA in tomato (Lycopersicon esculentum L.) has been shown to produce γ-linolenic acid (GLA; 18:3 Δ6,9,12) and octadecatetraenoic acid (OTA; 18:4 Δ6,9,12,15) in transgenic leaf and fruit tissue. This genetic modification has also, unexpectedly, resulted in a reduction in the percentage of linoleic acid (LA 18:2 Δ9,12) and a concomitant increase in the percentage of α-linolenic acid (ALA; 18:3 Δ9,12,15) in fruit tissue. These changes in fatty acid composition are thought to be beneficial for human health.
Index EntriesTomato fatty acids desaturase nutritional quality genetic modification
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