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Demography, genetic diversity and expansion load in the colonizing species Leontodon longirostris (Asteraceae) throughout its native range

hal.structure.identifierCREAF - Centre for Ecological Research and Applied Forestries
dc.contributor.authorPEDRO, Manuel
hal.structure.identifierCREAF - Centre for Ecological Research and Applied Forestries
dc.contributor.authorRIBA, Miquel
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierCREAF - Centre for Ecological Research and Applied Forestries
dc.contributor.authorGONZALEZ-MARTINEZ, Santiago C.
hal.structure.identifierUniversidad de Málaga [Málaga] = University of Málaga [Málaga]
dc.contributor.authorSEOANE, Pedro
hal.structure.identifierUniversidad de Málaga [Málaga] = University of Málaga [Málaga]
dc.contributor.authorBAUTISTA, Rocío
hal.structure.identifierUniversidad de Málaga [Málaga] = University of Málaga [Málaga]
dc.contributor.authorCLAROS, Manuel Gonzalo
hal.structure.identifierCREAF - Centre for Ecological Research and Applied Forestries
dc.contributor.authorMAYOL, Maria
dc.date.issued2021-03
dc.identifier.issn0962-1083
dc.description.abstractEnUnravelling the evolutionary processes underlying range expansions is fundamental to understand the distribution of organisms, as well as to predict their future responses to environmental change. Predictions for range expansions include a loss of genetic diversity and an accumulation of deleterious alleles along the expansion axis, which can decrease fitness at the range-front (expansion load). In plants, empirical studies supporting expansion load are scarce, and its effects remain to be tested outside a few model species. Leontodon longirostris is a colonizing Asteraceae with a widespread distribution in the Western Mediterranean, providing a particularly interesting system to gain insight into the factors that can enhance or mitigate expansion load. In this study, we produced a first genome draft for the species, covering 418 Mbp (similar to 53% of the genome). Although incomplete, this draft was suitable to design a targeted sequencing of similar to 1.5 Mbp in 238 L. longirostris plants from 21 populations distributed along putative colonization routes in the Iberian Peninsula. Inferred demographic history supports a range expansion from southern Iberia around 40,000 years ago, reaching northern Iberia around 25,000 years ago. The expansion was accompanied by a loss of genetic diversity and a significant increase in the proportion of putatively deleterious mutations. However, levels of expansion load in L. longirostris were smaller than those found in other plant species, which can be explained, at least partially, by its high dispersal ability, the self-incompatible mating system, and the fact that the expansion occurred along a strong environmental cline.
dc.language.isoen
dc.publisherWiley
dc.subject.encolonizing species
dc.subject.endemographic history
dc.subject.enexpansion load
dc.subject.enLeontodon longirostris
dc.subject.enrange expansions
dc.subject.ensingle nucleotide polymorphism
dc.title.enDemography, genetic diversity and expansion load in the colonizing species Leontodon longirostris (Asteraceae) throughout its native range
dc.typeArticle de revue
dc.identifier.doi10.1111/mec.15802
dc.subject.halSciences de l'environnement
bordeaux.journalMolecular Ecology
bordeaux.page1190-1205
bordeaux.volume30
bordeaux.issue5
bordeaux.peerReviewedoui
hal.identifierhal-03312442
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03312442v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Molecular%20Ecology&rft.date=2021-03&rft.volume=30&rft.issue=5&rft.spage=1190-1205&rft.epage=1190-1205&rft.eissn=0962-1083&rft.issn=0962-1083&rft.au=PEDRO,%20Manuel&RIBA,%20Miquel&GONZALEZ-MARTINEZ,%20Santiago%20C.&SEOANE,%20Pedro&BAUTISTA,%20Roc%C3%ADo&rft.genre=article


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