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Host specialisation or generalism? Population genetics of the aphid Myzus persicae reveals dominance of superclones across diverse host plants

hal.structure.identifierInstitut de Génétique, Environnement et Protection des Plantes [IGEPP]
dc.contributor.authorNIO, Yannis
hal.structure.identifierInstitut de Génétique, Environnement et Protection des Plantes [IGEPP]
dc.contributor.authorBUCHARD, Christelle
hal.structure.identifierInstitut de Génétique, Environnement et Protection des Plantes [IGEPP]
dc.contributor.authorDUVAL, Franck
hal.structure.identifierInstitut de Génétique, Environnement et Protection des Plantes [IGEPP]
dc.contributor.authorMAHÉO, Frédérique
hal.structure.identifierInstitut de Génétique, Environnement et Protection des Plantes [IGEPP]
dc.contributor.authorBUZY, Ségolène
hal.structure.identifierInstitut Agro Rennes Angers
hal.structure.identifierInstitut de Génétique, Environnement et Protection des Plantes [IGEPP]
dc.contributor.authorLE RALEC, Anne
hal.structure.identifierSanté de la vigne et qualité du vin [SVQV]
dc.contributor.authorCHESNAIS, Quentin
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorMARDOC, Gabin
hal.structure.identifierSanté de la vigne et qualité du vin [SVQV]
dc.contributor.authorBRAULT, Véronique
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorCANDRESSE, Thierry
hal.structure.identifierInstitut Technique de la Betterave [ITB]
dc.contributor.authorMALATESTA, Ghislain
hal.structure.identifierInstitut Technique de la Betterave [ITB]
dc.contributor.authorMONTEIRO, Amélie
hal.structure.identifierInstitut de Génétique, Environnement et Protection des Plantes [IGEPP]
dc.contributor.authorJAQUIÉRY, Julie
hal.structure.identifierInstitut de Génétique, Environnement et Protection des Plantes [IGEPP]
dc.contributor.authorSIMON, Jean-Christophe
dc.date.issued2025-07-17
dc.identifier.issn2296-701X
dc.description.abstractEnMost phytophagous insect species are specialized to feed on a narrow range of host plants, typically within the same genus or family, and sometimes even on a single plant species. However, some insect taxa are able to feed on plants from different families and are therefore considered to be generalists. Nevertheless, these generalist species can sometimes form cryptic species complexes or differentiate into host-based populations or races. Moreover, the host breadth of generalists is often measured under laboratory conditions, which may not accurately reflect the more challenging natural environments they encounter, and thus may lead to an overestimation of generalism. In this study, we used a population genetics approach to test whether Myzus persicae, a highly polyphagous aphid, is composed of hostspecialized populations or clones, or whether generalism is an intrinsic characteristic of the species as a whole. We sampled M. persicae over four consecutive years in northern France from a variety of host plants belonging to different botanical families. We found that populations of M. persicae in northern France were predominantly composed of superclones, namely multilocus genotypes identified in many copies. In particular, four superclones dominated M. persicae populations, occurring in high proportions on a broad range of unrelated host plants in each year of the study. Moreover, the array of characterized genotypes of M. persicae formed distinct genetic clusters, but with no clear association to specific host plants. This study shows that under natural conditions and at the very fine genetic level of a single clone, the generalist characteristic of M. persicae holds. Thus, M. persicae remains an exceptional example of a true generalist species.
dc.language.isoen
dc.publisherFrontiers Media
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enhost range
dc.subject.enclonal reproduction
dc.subject.enecological tolerance
dc.subject.enspecialization
dc.subject.engeneralism
dc.subject.engenetic structure
dc.subject.enherbivorous insects
dc.title.enHost specialisation or generalism? Population genetics of the aphid Myzus persicae reveals dominance of superclones across diverse host plants
dc.typeArticle de revue
dc.identifier.doi10.3389/fevo.2025.1635527
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences du Vivant [q-bio]/Sciences agricoles/Agronomie
bordeaux.journalFrontiers in Ecology and Evolution
bordeaux.volume13
bordeaux.peerReviewedoui
hal.identifierhal-05166831
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-05166831v1
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