Efficient Incorporation of Unsaturated Fatty Acids into Volicitin-Related Compounds in Spodoptera litura (Lepidoptera: Noctuidae)

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We introduced efficient incorporation of unsaturated fatty acids into volicitin [N-(17-hydroxylinolenoyl)-L-glutamine] and N-linolenoyl-L-glutamine, insect-derived elicitors of plant volatiles, in the common cutworms Spodoptera litura by the incubation of larval gut tissues with unsaturated (linolenic, linoleic, and oleic acids) or saturated fatty acids (palmitic and stearic acids) sodium salt, and L-[α-¹⁵N]glutamine.