Abstract
Host plant selection by aphids can be positively or negatively affected when plants are infected by phytoviruses. Potato plants infected by Potato virus Y (PVY), a non-persistent virus, are reported to affect settling behaviour and growth parameters of Myzus persicae Sulzer and Macrosiphum euphorbiae Thomas. Using the Electrical penetration graph system (EPG), we demonstrated that PVY-infection of potato plants influences the feeding behaviour of these two aphid species. Myzus persicae exhibited increased phloem sap ingestion and reduced non-probing duration. Macrosiphum euphorbiae showed delayed stylet insertion, reduced activity in the phloem vessels and an enhanced non-probing duration. In addition, we showed that these two species exhibited different transmission rates. The opposite effects of PVY-infected potato plant on these two aphids are discussed in terms of PVY spreading in the field.
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References
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Acknowledgements
This work was supported by the “Comité Nord Plants de Pommes de Terre”. We thank the “Service Régional de la Protection des Végétaux du Nord Pas-de-Calais”, the UMR203 INRA-INSA Villeurbanne for providing aphids, and the “Comité Nord Plants de Pommes de Terre” for providing potato tubers. Andrew Roots is thanked for critical reading of the manuscript especially concerning the English language.
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Boquel, S., Giordanengo, P. & Ameline, A. Divergent effects of PVY-infected potato plant on aphids. Eur J Plant Pathol 129, 507–510 (2011). https://doi.org/10.1007/s10658-010-9732-8
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DOI: https://doi.org/10.1007/s10658-010-9732-8