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Genetic analysis reveals efficient sexual spore dispersal at a fine spatial scale in Armillaria ostoyae, the causal agent of root-rot disease in conifers

hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDUTECH, Cyril
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierGroningen Institute for Evolutionary Life Sciences [Groningen] [GELIFES]
dc.contributor.authorLABBE, Frédéric
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorCAPDEVIELLE, Xavier
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorLUNG, Brigitte
dc.date.accessioned2022-10-12T13:28:52Z
dc.date.available2022-10-12T13:28:52Z
dc.date.issued2017
dc.identifier.issn1878-6146
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/158156
dc.description.abstractEnArmillaria ostoyae (sometimes named Armillaria solidipes) is a fungal species causing root diseases in numerous coniferous forests of the northern hemisphere. The importance of sexual spores for the establishment of new disease centres remains unclear, particularly in the large maritime pine plantations of southwestern France. An analysis of the genetic diversity of a local fungal population distributed over 500 ha in this French forest showed genetic recombination between genotypes to be frequent, consistent with regular sexual reproduction within the population. The estimated spatial genetic structure displayed a significant pattern of isolation by distance, consistent with the dispersal of sexual spores mostly at the spatial scale studied. Using these genetic data, we inferred an effective density of reproductive individuals of 0.1-0.3 individuals/ha, and a second moment of parent-progeny dispersal distance of 130-800 m, compatible with the main models of fungal spore dispersal. These results contrast with those obtained for studies of A. ostoyae over larger spatial scales, suggesting that inferences about mean spore dispersal may be best performed at fine spatial scales (i.e. a few kilometres) for most fungal species.
dc.language.isoen
dc.publisherElsevier
dc.rights.urihttp://creativecommons.org/licenses/by-sa/
dc.subjectarmillaria ostoyae
dc.subjectspore sexuée
dc.subjectpinus pinaster
dc.subjectgénotype
dc.subjectdiversité génétique
dc.subject.enforest disease
dc.subject.enisolation by distance
dc.subject.enmaritime pine
dc.subject.enplanted forest
dc.subject.enpopulation size
dc.subject.ensingle nucleotide polymorphism
dc.subject.engenêtic variation
dc.title.enGenetic analysis reveals efficient sexual spore dispersal at a fine spatial scale in Armillaria ostoyae, the causal agent of root-rot disease in conifers
dc.typeArticle de revue
dc.identifier.doi10.1016/j.funbio.2017.03.001
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalFungal Biology
bordeaux.page550-560
bordeaux.volume121
bordeaux.hal.laboratoriesBioGeCo (Biodiversité Gènes & Communautés) - UMR 1202*
bordeaux.issue6-7
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-01608154
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01608154v1
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