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Location of the Mechanism of Resistance to Amphorophora agathonica (Hemiptera: Aphididae) in Red Raspberry

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dc.creator Lightle, D. M.
dc.creator Dossett, M.
dc.creator Backus, E. A.
dc.creator Lee, J. C.
dc.date.accessioned 2012-10-09T17:14:37Z
dc.date.available 2012-10-09T17:14:37Z
dc.date.issued 2012-08
dc.identifier.citation Lightle, D. M., Dossett, M., Backus, E. A., & Lee, J. C. (2012). Location of the mechanism of resistance to amphorophora agathonica (hemiptera: Aphididae) in red raspberry. Journal of Economic Entomology, 105(4), 1465-1470. doi: 10.1603/EC11405 en_US
dc.identifier.uri http://hdl.handle.net/1957/34259
dc.description This is the publisher’s final pdf. The article is copyrighted by the Entomological Society of America. It can be found at: http://www.entsoc.org/Pubs/Periodicals/JEE. To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. en_US
dc.description.abstract The aphid Amphorophora agathonica Hottes (Hemiptera: Aphididae) is an important virus vector in red (Rubus idaeus L.) and black (Rubus occidentalis L.) raspberries in North America. Raspberry resistance to A. agathonica in the form of a single dominant gene named Ag1 has been relied upon to help control aphid-transmitted plant viruses; however, the mechanism of resistance to the insect is poorly understood. Aphid feeding was monitored using an electrical penetration graph on the resistant red raspberry `Tulameen' and compared with a susceptible control, `Vintage'. There were no differences in pathway feeding behaviors of aphids as they moved toward the phloem. Once in the phloem, however, aphids feeding on resistant plants spent significantly more time salivating than on susceptible plants, and ingested significantly less phloem sap. This suggests that a mechanism for resistance to A. agathonica is located in the phloem. Reduced ingestion of phloem may result in inefficient acquisition of viruses and is a likely explanation for the lack of aphid-transmitted viruses in plantings of resistant cultivars. en_US
dc.description.sponsorship Funding was provided by a USDA Specialty Crops Research Initiative grant 2009-51181-06022, and CRIS 5358-22000-032-00D. en_US
dc.language.iso en_US en_US
dc.publisher Entomological Society of America en_US
dc.relation.ispartofseries Journal of Economic Entomology en_US
dc.relation.ispartofseries Vol. 105 no. 4 en_US
dc.subject electrical penetration graph en_US
dc.subject plant resistance en_US
dc.subject feeding behavior en_US
dc.subject antixenosis en_US
dc.title Location of the Mechanism of Resistance to Amphorophora agathonica (Hemiptera: Aphididae) in Red Raspberry en_US
dc.type Article en_US
dc.description.peerreview yes en_US
dc.identifier.doi 10.1603/EC11405

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