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 550830
Title Trichome Independent Resistance against Western Flower Thrips in Tomato
Author(s) Bac-Molenaar, Johanna A.; Mol, Selena; Verlaan, Maarten G.; Elven, Joke van; Kim, Hye Kyong; Klinkhamer, Peter G.L.; Leiss, Kirsten A.; Vrieling, Klaas
Source Plant and Cell Physiology 60 (2019)5. - ISSN 0032-0781 - p. 1011 - 1024.
DOI https://doi.org/10.1093/pcp/pcz018
Department(s) GTB Gewasgez. Bodem en Water
Publication type Refereed Article in a scientific journal
Publication year 2019
Keyword(s) Insect resistance - Metabolite profiles - QTL mapping - Tomato - Trichome-derived volatiles - α-Tomatine
Abstract

Western flower thrips (WFT) are a major pest on many crops, including tomato. Thrips cause yield losses, not only through feeding damage, but also by the transmission of viruses of which the Tomato Spotted Wilt Virus is the most important one. In cultivated tomato, genetic diversity is extremely low, and all commercial lines are susceptible to WFT. Several wild relatives are WFT resistant and these resistances are based on glandular trichome-derived traits. Introgression of these traits in cultivated lines did not lead to WFT resistant commercial varieties so far. In this study, we investigated WFT resistance in cultivated tomato using a F2 population derived from a cross between a WFT susceptible and a WFT resistant cultivated tomato line. We discovered that this WFT resistance is independent of glandular trichome density or trichome-derived volatile profiles and is associated with three QTLs on chromosomes 4, 5 and 10. Foliar metabolic profiles of F3 families with low and high WFT feeding damage were clearly different. We identified α-tomatine and a phenolic compound as potential defensive compounds. Their causality and interaction need further investigation. Because this study is based on cultivated tomato lines, our findings can directly be used in nowadays breeding programs.

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