Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 63906
Title Identification of volatile potato sesquiterpenoids and their olfactory detection by the two-spotted stinkbug Perillus bioculatus
Author(s) Weissbecker, B.; Loon, J.J.A. van; Posthumus, M.A.; Bouwmeester, H.J.; Dicke, M.
Source Journal of Chemical Ecology 26 (2000). - ISSN 0098-0331 - p. 1433 - 1445.
Department(s) Laboratory of Entomology
Laboratory for Organic Chemistry
Plant Research International
Publication type Refereed Article in a scientific journal
Publication year 2000
Abstract The predaceous stinkbug Perillus bioculatus is attracted towards volatiles emitted by damaged potato plants. Whereas mechanically damaged plants lost attractiveness 1 h after damage was inflicted, attraction was long-lasting when the plants were damaged by Colorado potato beetles Leptinotarsa decemlineata, a prey of P. bioculatus. A range of sesquiterpenoids was previously shown to be induced upon beetle damage. In order to evaluate the potential role of sesquiterpenoids in the attraction response, volatiles from damaged potato plants were collected and analyzed with GC-MS and GC-EAG. The antennae of P. bioculatus responded to β- caryophyllene, α-humulene, (E)-β-farnesene, (-)-germacrene D, and germacrene D-4-ol. Two sesquiterpenes that coeluted, α-zingiberene and bicyclogermacrene, together also elicited olfactory responses of P. bioculatus, whereas the individual compounds did not. The response of P. bioculatus to a variety of sesquiterpenes at low dosages suggests a role for these compounds in prey detection of this stinkbug
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