4.8 Article

Genetic engineering of terpenoid metabolism attracts, bodyguards to Arabidopsis

Journal

SCIENCE
Volume 309, Issue 5743, Pages 2070-2072

Publisher

AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1116232

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Herbivore-damaged plants release complex mixtures of volatites that attract natural enemies of the herbivore. To study the relevance of individual components of these mixtures for predator attraction, we manipulated herbivory-induced volatiles through genetic engineering. Metabolic engineering of terpenoids, which dominate the composition of many induced plant volatile bouquets, holds particular promise. By switching the subcellular localization of the introduced sesquiterpene synthase to the mitochondria, we obtained transgenic Arabidopsis thaliana plants emitting two new isoprenoids. These altered plants attracted carnivorous predatory mites (Phytoseiulus persimilis) that aid the plants' defense mechanisms.

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