Phylogeography of Arenaria balearica L. (Caryophyllaceae): evolutionary history of a disjunct endemic from the Western Mediterranean continental islands

Phylogeography of Arenaria balearica L. (Caryophyllaceae): evolutionary history of a disjunct endemic from the Western Mediterranean continental islands

Although it has been traditionally accepted that (Caryophyllaceae) could be a relict Tertiary plant species, this has never been experimentally tested. Nor have the palaeohistorical reasons underlying the highly fragmented distribution of the species in the Western Mediterranean region been investig...

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Bibliographic Details
Published in:PeerJ (San Francisco, CA) Vol. 4; p. e2618
Main Authors: Bobo-Pinilla, Javier, Barrios de León, Sara B, Seguí Colomar, Jaume, Fenu, Giuseppe, Bacchetta, Gianluigi, Peñas de Giles, Julio, Martínez-Ortega, María Montserrat
Format: Journal Article
Language:English
Published: United States PeerJ. Ltd 03-11-2016
PeerJ, Inc
PeerJ Inc
Subjects:
Abies
AFLP
Amplified fragment length polymorphism
Analysis
Anchusa
Animal behavior
Arenaria
Bayesian analysis
Biodiversity
Biogeography
Biology
Caryophyllaceae
Data processing
Deoxyribonucleic acid
DNA
DNA sequencing
Evolution
Evolutionary biology
Evolutionary Studies
Flowers & plants
Genetic diversity
Genetic research
Genetics
Haplotypes
Information management
Island evolution
Mediterranean
Nucleotide sequence
Phylogeography
Plant Science
Population
Population differentiation
Salinity
Species
Stasis
Wildlife conservation
Balearic Islands
Corsica
Mediterranean
Plastid DNA
Phylogeography
AFLP
Island evolution
Arenaria
Hercynian
Stasis
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Summary:Although it has been traditionally accepted that (Caryophyllaceae) could be a relict Tertiary plant species, this has never been experimentally tested. Nor have the palaeohistorical reasons underlying the highly fragmented distribution of the species in the Western Mediterranean region been investigated. We have analysed AFLP data (213) and plastid DNA sequences (226) from a total of 250 plants from 29 populations sampled throughout the entire distribution range of the species in Majorca, Corsica, Sardinia, and the Tuscan Archipelago. The AFLP data analyses indicate very low geographic structure and population differentiation. Based on plastid DNA data, six alternative phylogeographic hypotheses were tested using Approximate Bayesian Computation (ABC). These analyses revealed ancient area fragmentation as the most probable scenario, which is in accordance with the star-like topology of the parsimony network that suggests a pattern of long term survival and subsequent differentiation. Overall low levels of genetic diversity and plastid DNA variation were found, reflecting evolutionary stasis of a species preserved in locally long-term stable habitats.
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ISSN:2167-8359
2167-8359
DOI:10.7717/peerj.2618