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Northern glacial refugia and altitudinal niche divergence shape genome‐wide differentiation in the emerging plant model <i>Arabidopsis arenosa</i>
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- Filip Kolář
- Natural History Museum University of Oslo PO Box 1172 Blindern Oslo NO‐0318 Norway
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- Gabriela Fuxová
- Department of Botany Faculty of Science Charles University in Prague Prague CZ‐128 01 Czech Republic
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- Eliška Záveská
- Institute of Botany University of Innsbruck Innsbruck AT‐6020 Austria
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- Atsushi J. Nagano
- Center for Ecological Research Kyoto University Kyoto JP‐520‐2113 Japan
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- Magdalena Lučanová
- Department of Botany Faculty of Science Charles University in Prague Prague CZ‐128 01 Czech Republic
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- Lucie Hyklová
- Department of Botany Faculty of Science Charles University in Prague Prague CZ‐128 01 Czech Republic
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- Hiroshi Kudoh
- Center for Ecological Research Kyoto University Kyoto JP‐520‐2113 Japan
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- Karol Marhold
- Department of Botany Faculty of Science Charles University in Prague Prague CZ‐128 01 Czech Republic
Bibliographic Information
- Published
- 2016-07-29
- Resource Type
- journal article
- Rights Information
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- http://doi.wiley.com/10.1002/tdm_license_1.1
- DOI
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- 10.1111/mec.13721
- Publisher
- Wiley
Search this article
Description
<jats:title>Abstract</jats:title><jats:p>Quaternary climatic oscillations profoundly impacted temperate biodiversity. For many diverse yet undersampled areas, however, the consequences of this impact are still poorly known. In Europe, particular uncertainty surrounds the role of Balkans, a major hotspot of European diversity, in postglacial recolonization of more northerly areas, and the Carpathians, a debatable candidate for a northern ‘cryptic’ glacial refugium. Using genome‐wide <jats:styled-content style="fixed-case">SNP</jats:styled-content>s and microsatellites, we examined how the interplay of historical processes and niche shifts structured genetic diversity of diploid <jats:italic>Arabidopsis arenosa</jats:italic>, a little‐known member of the plant model genus that occupies a wide niche range from sea level to alpine peaks across eastern temperate Europe. While the northern Balkans hosted one isolated endemic lineage, most of the genetic diversity was concentrated further north in the Pannonian Basin and the Carpathians, where it likely survived the last glaciation in northern refugia. Finally, a distinct postglacial environment in northern Europe was colonized by populations of admixed origin from the two Carpathian lineages. Niche differentiation along altitude‐related bioclimatic gradients was the main trend in the phylogeny of <jats:italic>A. arenosa</jats:italic>. The most prominent niche shifts, however, characterized genetically only slightly divergent populations that expanded into narrowly defined alpine and northern coastal postglacial environments. Our study highlights the role of eastern central European mountains not only as refugia for unique temperate diversity but also sources for postglacial expansion into novel high‐altitude and high‐latitude niches. Knowledge of distinct genetic substructure of diploid <jats:italic>A. arenosa</jats:italic> also opens new opportunities for follow‐up studies of this emerging model of evolutionary biology.</jats:p>
Journal
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- Molecular Ecology
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Molecular Ecology 25 (16), 3929-3949, 2016-07-29
Wiley
