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Free keywords:
Phaedon cochleariae; Coleoptera; Chrysomelidae; iridoid
monoterpenes; de novo biosynthesis; sequestration;
thioglycosides
Leaf-beetle larvae; pyrrolizidine alkaloids; host-plant;
biosynthesis; secretion; stereochemistry; evolutionary;
lapponica; insects; adults
Abstract:
Larvae of the chrysomelid beetles Phaedon cochleariae and Gastrophysa viridula use iridoid monoterpenes for defense. The compounds are synthesized de novo in the glandular tissue and the reservoir. However, larvae feeding on leaves impregnated with thio