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Updated: Jun 25, 2026

Herbivore-induced Blueberry Volatiles and Intra-plant Signaling
Published on: December 18, 2011
Silencing the jasmonate cascade: induced plant defenses and insect populations
André Kessler1, Rayko Halitschke, Ian T Baldwin
1Department of Molecular Ecology, Max-Planck-Institute for Chemical Ecology, Hans-Knöll-Strasse 8, Jena 07745, Germany.
Abstract:
We transformed the native tobacco, Nicotiana attenuata, to silence its lipoxygenase, hydroperoxide lyase, and allene oxide synthase genes in order to inhibit oxylipin signaling, known to mediate the plant's direct and indirect defenses. When planted into native habitats, lipoxygenase-deficient plants were more vulnerable to N. attenuata's adapted herbivores but also attracted novel herbivore species, which fed and reproduced successfully. In addition to highlighting the value of genetically silencing plants to study ecological interactions in nature, these results show that lipoxygenase-dependent signaling determines host selection for opportunistic herbivores and that induced defenses influence herbivore community composition.
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