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« Previous AbstractGene responses in bean leaves induced by herbivory and by herbivore-induced volatiles    Next AbstractHerbivore-induced volatiles induce the emission of ethylene in neighboring lima bean plants »

Nature


Title:Herbivory-induced volatiles elicit defence genes in lima bean leaves
Author(s):Arimura G; Ozawa R; Shimoda T; Nishioka T; Boland W; Takabayashi J;
Address:"Bio-oriented Technology Research Advancement Institution, Tokyo, Japan"
Journal Title:Nature
Year:2000
Volume:406
Issue:6795
Page Number:512 - 515
DOI: 10.1038/35020072
ISSN/ISBN:0028-0836 (Print) 0028-0836 (Linking)
Abstract:"In response to herbivore damage, several plant species emit volatiles that attract natural predators of the attacking herbivores. Using spider mites (Tetranychus urticae) and predatory mites (Phytoseiulus persimilis), it has been shown that not only the attacked plant but also neighbouring plants are affected, becoming more attractive to predatory mites and less susceptible to spider mites. 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"
Keywords:"Acetates/pharmacology Animals Cyclopentanes/pharmacology Egtazic Acid/*analogs & derivatives/pharmacology Fabaceae/drug effects/genetics/metabolism/*physiology Female Gene Expression Regulation, Plant Lipoxygenase/biosynthesis/genetics Mites/physiology Oi;"
Notes:"MedlineArimura, G Ozawa, R Shimoda, T Nishioka, T Boland, W Takabayashi, J eng Research Support, Non-U.S. Gov't England 2000/08/22 Nature. 2000 Aug 3; 406(6795):512-5. doi: 10.1038/35020072"

 
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