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 539235
Title The use of Metabolomics to Elucidate Resistance Markers Against Damson-Hop Aphid
Author(s) Undas, Anna K.; Weihrauch, Florian; Lutz, Anton; Tol, Rob van; Delatte, Thierry; Verstappen, Francel; Bouwmeester, Harro
Source Journal of Chemical Ecology 44 (2018)7-8. - ISSN 0098-0331 - p. 711 - 726.
Department(s) RIKILT - Business unit Contaminants & Toxins
PPO/PRI Biointeractions and Plant Health
Laboratory of Plant Physiology
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) Damson-hop aphid - Hop metabolites - Plant defense - Plant resistance - Untargeted metabolite profiling

Phorodon humuli (Damson-hop aphid) is one of the major pests of hops in the northern hemisphere. It causes significant yield losses and reduces hop quality and economic value. Damson-hop aphid is currently controlled with insecticides, but the number of approved pesticides is steadily decreasing. In addition, the use of insecticides almost inevitably results in the development of resistant aphid genotypes. An integrated approach to pest management in hop cultivation is therefore badly needed in order to break this cycle and to prevent the selection of strains resistant to the few remaining registered insecticides. The backbone of such an integrated strategy is the breeding of hop cultivars that are resistant to Damson-hop aphid. However, up to date mechanisms of hops resistance towards Damson-hop aphids have not yet been unraveled. In the experiments presented here, we used metabolite profiling followed by multivariate analysis and show that metabolites responsible for hop aroma and flavor (sesquiterpenes) in the cones can also be found in the leaves, long before the hop cones develop, and may play a role in resistance against aphids. In addition, aphid feeding induced a change in the metabolome of all hop genotypes particularly an increase in a number of oxidized compounds, which suggests this may be part of a resistance mechanism.

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