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 534085
Title Broad spectrum insect resistance and metabolites in close relatives of the cultivated tomato
Author(s) Vosman, Ben; van’t Westende, Wendy P.C.; Henken, Betty; Eekelen, Henriëtte D.L.M. van; Vos, Ric C.H. de; Voorrips, Roeland E.
Source Euphytica 214 (2018)3. - ISSN 0014-2336
Department(s) EPS
WUR PB Non host en Insectenresistentie
WUR Plant Breeding
WUR PB Biodiversiteit en Genetische Variatie
PRI BIOS Applied Metabolic Systems
WUR PB Kwantitatieve Aspecten
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) Acyl sugars - Aphid - Caterpillar - Flavonoids - Lycopersicon group - Metabolomics - Thrips - Whitefly
Abstract Wild relatives of tomato possess effective means to deal with several pests, among which are a variety of insects. Here we studied the presence of resistance components against Trialeurodes vaporariorum, Myzus persicae, Frankliniella occidentalis, and Spodoptera exigua in the Lycopersicon group of Solanum section Lycopersicon by means of bioassays and comprehensive metabolite profiling. Broad spectrum resistance was found in Solanum galapagense and a few accessions of S. pimpinellifolium. Resistance to the sap sucking insects may be based on the same mechanism, but different from the caterpillar resistance. Large and highly significant differences in the leaf metabolomes were found between S. galapagense, containing type IV trichomes, and its closest relative S. cheesmaniae, which lacks type IV trichomes. The most evident differences were the relatively high levels of different methylated forms of the flavonoid myricetin and many acyl sucrose structures in S. galapagense. Possible candidate genes regulating the production of these compounds were identified in the Wf-1 QTL region of S. galapagense, which was previously shown to confer resistance to the whitefly B. tabaci. The broad spectrum insect resistance identified in S. galapagense will be very useful to increase resistance in cultivated tomato.
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