An effective molecular approach for assessing cereal aphid-parasitoid-endosymbiont networks

2017 | journal article. A publication with affiliation to the University of Göttingen.

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​An effective molecular approach for assessing cereal aphid-parasitoid-endosymbiont networks​
Ye, Z.; Vollhardt, I. M. G.; Girtler, S.; Wallinger, C.; Tomanovic, Z. & Traugott, M.​ (2017) 
Scientific Reports7 art. 3138​.​ DOI: https://doi.org/10.1038/s41598-017-02226-w 

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Authors
Ye, Z.; Vollhardt, Ines M. G.; Girtler, Susanne; Wallinger, Corinna; Tomanovic, Zeljko; Traugott, Michael
Abstract
Molecular approaches are increasingly being used to analyse host-parasitoid food webs as they overcome several hurdles inherent to conventional approaches. However, such studies have focused primarily on the detection and identification of aphids and their aphidiid primary parasitoids, largely ignoring primary parasitoid-hyperparasitoid interactions or limiting these to a few common species within a small geographical area. Furthermore, the detection of bacterial secondary endosymbionts has not been considered in such assays despite the fact that endosymbionts may alter aphid-parasitoid interactions, as they can confer protection against parasitoids. Here we present a novel two-step multiplex PCR (MP-PCR) protocol to assess cereal aphid-primary parasitoid-hyperparasitoid-endosymbiont interactions. The first step of the assay allows detection of parasitoid DNA at a general level (24 primary and 16 hyperparasitoid species) as well as the species-specific detection of endosymbionts (3 species) and cereal aphids (3 species). The second step of the MP-PCR assay targets seven primary and six hyperparasitoid species that commonly occur in Central Europe. Additional parasitoid species not covered by the second-step of the assay can be identified via sequencing 16S rRNA amplicons generated in the first step of the assay. The approach presented here provides an efficient, highly sensitive, and cost-effective (similar to consumable costs of 1.3 epsilon per sample) tool for assessing cereal aphid-parasitoid-endosymbiont interactions.
Issue Date
2017
Journal
Scientific Reports 
Organization
Fakultät für Agrarwissenschaften ; Department für Nutzpflanzenwissenschaften ; Abteilung Agrarentomologie 
ISSN
2045-2322

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