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Colonization routes, microevolutionary genetic structure and conservation concerns in a remote widespread insular endemic grass: the case of the Azorean tussock grass Deschampsia foliosa

2019Journal article Open access
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dc.contributor.authorMoura, Mónica
dc.contributor.authorCatalán, Pilar
dc.contributor.authorBrehm, António
dc.contributor.authorSequeira, Miguel Menezes de
dc.date.accessioned2022-03-25T11:47:41Z
dc.date.available2022-03-25T11:47:41Z
dc.date.issued2019
dc.description.abstractPopulation genetic structure and diversity and phylogeographical dispersal routes were assessed for the Azorean endemic grass Deschampsia foliosa using AFLP markers. This species occurs on seven islands in the archipelago and a sampling of populations from the three main geographical groups of islands was used, covering its known distribution. Principal coordinates analyses (PCoAs), Bayesian analyses and phylogenetic networks revealed different degrees of admixture for the central group (C) populations and a clear differentiation for the western group (W) and São Miguel island (in the eastern group, E) populations. The best K values corresponded to nine and 11 genetic groups, which were also confirmed by analysis of molecular variance. A low but significant correlation between genetic data and geography was observed, with most relevant barriers to gene flow generally placed between sub archipelagos. We suggest a west-to-east isolation by distance dispersal model across an island age continuum with Flores–Corvo (W) and Pico (C) at the extremes of the dispersal path. An alternative scenario, also supported by the genetic data, implies an initial colonization of São Jorge (C), dispersal within C and following bidirectional dispersal to the W and E. The phylogeographical framework detected might be related to island age and to highly destructive volcanic events, and it supports the occurrence of cryptic diversity within D. foliosa. Genetic diversity estimators were highest for Pico island populations (C), lowest for São Miguel (E) and Flores (W) populations, and more divergent for the Corvo population (W). Conservation measures should be taken to preserve the genetic structure found across sub-archipelagos and islands.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMoura, M., Catálan, P., Brehm, A., & Sequeira, M. M.(2019). Colonization routes, microevolutionary genetic structure and conservation concerns in a remote widespread insular endemic grass: the case of the Azorean tussock grass Deschampsia foliosa. Botanical Journal of the Linnean Society, 191(3), 365-380. https://doi.org/10.1093/botlinnean/boz059pt_PT
dc.identifier.doi10.1093/botlinnean/boz059pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/4181
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherLinnean Society of Londonpt_PT
dc.relationEvolutionary relationships of Macaronesic Deschampsia Aveneae, Poaceae based on a morphological and molecular approaches.
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectAzores (Portugal)pt_PT
dc.subjectAçores (Portugal)pt_PT
dc.subjectConservation geneticspt_PT
dc.subjectMicroevolutionpt_PT
dc.subjectPhylogeographypt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências da Vidapt_PT
dc.titleColonization routes, microevolutionary genetic structure and conservation concerns in a remote widespread insular endemic grass: the case of the Azorean tussock grass Deschampsia foliosapt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleEvolutionary relationships of Macaronesic Deschampsia Aveneae, Poaceae based on a morphological and molecular approaches.
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POCI/POCTI%2FBME%2F39640%2F2001/PT
oaire.citation.endPage380pt_PT
oaire.citation.issue3pt_PT
oaire.citation.startPage365pt_PT
oaire.citation.titleBotanical Journal of the Linnean Societypt_PT
oaire.citation.volume191pt_PT
oaire.fundingStreamPOCI
person.familyNameMoura
person.familyNameBrehm
person.familyNameSequeira
person.givenNameMónica
person.givenNameAntonio
person.givenNameMiguel
person.identifier.ciencia-idB61A-C1E6-2360
person.identifier.ciencia-id3613-8D1F-0EDF
person.identifier.ciencia-idCA1C-1AC6-6346
person.identifier.orcid0000-0001-5555-2388
person.identifier.orcid0000-0003-3168-5340
person.identifier.orcid0000-0001-9728-465X
person.identifier.scopus-author-idAuthor ID 7006085833
person.identifier.scopus-author-id35101791200
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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