Herbivory-induced volatiles elicit defence genes in lima bean leaves

Gen-ichiro Arimura, Rika Ozawa, Takeshi Shimoda, Takaaki Nishioka, Wilhelm Boland and Junji Takabayashi ()
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Gen-ichiro Arimura: Bio-oriented Technology Research Advancement Institution
Rika Ozawa: Bio-oriented Technology Research Advancement Institution
Takeshi Shimoda: Bio-oriented Technology Research Advancement Institution
Takaaki Nishioka: Laboratory of Insect Physiology, Graduate School of Agriculture, Kyoto University
Wilhelm Boland: Max Planck Institute for Chemical Ecology
Junji Takabayashi: Laboratory of Ecological Information, Graduate School of Agriculture, Kyoto University

Nature, 2000, vol. 406, issue 6795, 512-515

Abstract: Abstract In response to herbivore damage, several plant species emit volatiles that attract natural predators of the attacking herbivores1,2,3,4,5. Using spider mites (Tetranychus urticae) and predatory mites (Phytoseiulus persimilis)1,2,3,4, it has been shown that not only the attacked plant but also neighbouring plants are affected, becoming more attractive to predatory mites3,6 and less susceptible to spider mites6. The mechanism involved in such interactions, however, remains elusive. Here we show that uninfested lima bean leaves activate five separate defence genes when exposed to volatiles from conspecific leaves infested with T. urticae, but not when exposed to volatiles from artificially wounded leaves. The expression pattern of these genes is similar to that produced by exposure to jasmonic acid. At least three terpenoids in the volatiles are responsible for this gene activation; they are released in response to herbivory but not artificial wounding. Expression of these genes requires calcium influx and protein phosphorylation/dephosphorylation.

Date: 2000
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DOI: 10.1038/35020072

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