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 16841
Title Induction of indirect defence against spider-mites in uninfested lima bean leaves.
Author(s) Takabayashi, J.; Dicke, M.; Posthumus, M.A.
Source Phytochemistry 30 (1991). - ISSN 0031-9422 - p. 1459 - 1462.
DOI https://doi.org/10.1016/0031-9422(91)84186-V
Department(s) Laboratory of Entomology
Organic Chemistry
Publication type Refereed Article in a scientific journal
Publication year 1991
Abstract Headspace analyses of uninfested Lima bean (Phaseolus lunatus) leaves show an absence of or only trace amounts of the terpenoids (E)--ocimene and (E)-4,8-dimethyl-1,3,7-nonatriene. Upon infestation by two-spotted spider-mites (Tetranychus urticae), Lima bean leaves produce (E)--ocimene and (E)-4,8-dimethyl-1,3,7-nonatriene which attract predators of the herbivore, a phenomenon known as indirect defence. When uninfested Lima bean leaves were placed on wet cotton wool upon which leaves that were partially infested with spider-mites, were also placed, the uninfested leaf tissue emitted the terpenoids in relatively high amounts: ca 20–40% of the amounts emitted by the infested leaf tissue. The same effect was found when uninfested leaves were put on wet cotton wool on which infested leaves had previously lain. The data show that an elicitor(s) from spider-mite infested leaves induces the production of (E)--ocimene and (E)-4,8-dimethyl-1,3,7-nonatriene in uninfested Lima bean leaves. This is the first chemical evidence for induction of indirect defence in uninfested leaves
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