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 442346
Title Chrysanthemum expressing a linalool synthase gene ‘smells good’, but ‘tastes bad’to western flower thrips
Author(s) Ting Yang, Ting; Stoopen, G.M.; Thoen, H.P.M.; Wiegers, G.L.; Jongsma, M.A.
Source Plant Biotechnology Journal 11 (2013)7. - ISSN 1467-7644 - p. 875 - 882.
Department(s) Laboratory of Entomology
RIKILT - BU Toxicology Bioassays & Novel Foods
Laboratory of Plant Physiology
PRI BIOINT Entomology & Virology
PRI BIOS Applied Metabolic Systems
Publication type Refereed Article in a scientific journal
Publication year 2013
Keyword(s) induced plant volatiles - terpenoid pathway - mass-spectrometry - herbivore enemies - tomato fruits - s-linalool - host-plant - emissions - biosynthesis - defense
Abstract Herbivore-induced plant volatiles are often involved in direct and indirect plant defence against herbivores. Linalool is a common floral scent and found to be released from leaves by many plants after herbivore attack. In this study, a linalool/nerolidol synthase, FaNES1, was overexpressed in the plastids of chrysanthemum plants (Chrysanthemum morifolium). The volatiles of FaNES1 chrysanthemum leaves were strongly dominated by linalool, but they also emitted small amount of the C11-homoterpene, (3E)-4,8-dimethyl-1,3,7-nonatriene, a derivative of nerolidol. Four nonvolatile linalool glycosides in methanolic extracts were found to be significantly increased in the leaves of FaNES1 plants compared to wild-type plants. They were putatively identified by LC-MS-MS as two linalool–malonyl–hexoses, a linalool–pentose–hexose and a glycoside of hydroxy–linalool. A leaf-disc dual-choice assay with western flower thrips (WFT, Frankliniella occidentalis) showed, initially during the first 15 min of WFT release, that FaNES1 plants were significantly preferred. This gradually reversed into significant preference for the control, however, at 20–28 h after WFT release. The initial preference was shown to be based on the linalool odour of FaNES1 plants by olfactory dual-choice assays using paper discs emitting pure linalool at similar rates as leaf discs. The reversal of preference into deterrence could be explained by the initial nonvolatile composition of the FaNES1 plants, as methanolic extracts were less preferred by WFT. Considering the common occurrence of linalool and its glycosides in plant tissues, it suggests that plants may balance attractive fragrance with ‘poor taste’ using the same precursor compound.
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