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The genetic consequences of population marginality: A case study in maritime pine

hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorTHERAROZ, Adélaïde
hal.structure.identifierInstituto de Ciencias Forestales (ICIFOR- INIA), CSIC
dc.contributor.authorGUADAÑO-PEYROT, Carlos
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierUK Centre for Ecology & Hydrology
dc.contributor.authorARCHAMBEAU, Juliette
hal.structure.identifierInstitute of Biosciences and Bioresources
dc.contributor.authorPINOSIO, Sara
hal.structure.identifierInstitute of Biosciences and Bioresources
dc.contributor.authorBAGNOLI, Francesca
hal.structure.identifierInstitute of Biosciences and Bioresources
dc.contributor.authorPIOTTI, Andrea
hal.structure.identifierInstitute of Biosciences and Bioresources
dc.contributor.authorAVANZI, Camilla
hal.structure.identifierInstitute of Biosciences and Bioresources
dc.contributor.authorVENDRAMIN, Giovanni
hal.structure.identifierInstituto de Ciencias Forestales (ICIFOR- INIA), CSIC
dc.contributor.authorALÍA, Ricardo
hal.structure.identifierInstituto de Ciencias Forestales (ICIFOR- INIA), CSIC
dc.contributor.authorGRIVET, Delphine
hal.structure.identifierSlovenian Forestry Institute
dc.contributor.authorWESTERGREN, Marjana
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorGONZÁLEZ‐MARTÍNEZ, Santiago
dc.date.accessioned2024-09-10T02:01:16Z
dc.date.available2024-09-10T02:01:16Z
dc.date.issued2024-08-05
dc.identifier.issn1366-9516
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/201498
dc.description.abstractEnAim Marginal tree populations, either those located at the edges of the species' range or in suboptimal environments, are often a valuable genetic resource for biological conservation. However, there is a lack of knowledge about the genetic consequences of population marginality, estimated across entire species' ranges. Our study addresses this gap by providing information about several genetic indicators and their variability in marginal and core populations identified using quantitative marginality indices. Location Southwestern Europe and North Africa. Methods Using 10,185 SNPs across 82 populations of maritime pine ( Pinus pinaster Ait.), a widespread conifer characterised by a fragmented range, we modelled the relationship of seven genetic indicators potentially related to population evolutionary resilience, namely genetic diversity (based on both all SNPs and outlier SNPs), inbreeding, genetic differentiation, recessive genetic load and genomic offset, with population geographical, demo‐historical and ecological marginality (as estimated by nine quantitative indices). Models were constructed for both regional (introducing gene pool as a random factor) and range‐wide spatial scales. Results We showed a trend towards decreasing overall genetic diversity and increasing differentiation with geographic marginality, supporting the centre‐periphery hypothesis (CPH). However, we found no correlation between population inbreeding and marginality, while geographically marginal populations had a lower recessive genetic load (only models without the gene pool effect). Ecologically marginal populations had a higher genomic offset, suggesting higher maladaptation to future climate, albeit some of these populations also had high genetic diversity for climate outliers. Main Conclusions Overall genetic diversity (but not outlier‐based estimates) and differentiation patterns support the CPH. Ecologically marginal populations and those at the southern edge could be more vulnerable to climate change due to higher climate maladaptation, as predicted by genomic offsets, and/or lower potentially adaptive genetic diversity. This risk is exacerbated by typically small effective population sizes and increasing human impact in marginal populations.
dc.language.isoen
dc.publisherWiley
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.encentre-periphery hypothesis
dc.subject.enecological modelling
dc.subject.enforest genetic resources
dc.subject.engenetic indicators
dc.subject.enmarginal populations
dc.subject.enMediterranean and Atlantic regions
dc.title.enThe genetic consequences of population marginality: A case study in maritime pine
dc.typeArticle de revue
dc.identifier.doi10.1111/ddi.13910
dc.subject.halSciences de l'environnement
bordeaux.journalDiversity and Distributions
bordeaux.hal.laboratoriesBioGeCo (Biodiversité Gènes & Communautés) - UMR 1202*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-04690799
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04690799v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Diversity%20and%20Distributions&rft.date=2024-08-05&rft.eissn=1366-9516&rft.issn=1366-9516&rft.au=THERAROZ,%20Ad%C3%A9la%C3%AFde&GUADA%C3%91O-PEYROT,%20Carlos&ARCHAMBEAU,%20Juliette&PINOSIO,%20Sara&BAGNOLI,%20Francesca&rft.genre=article


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