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Landscape structure, clonal propagation, and genetic diversity in Scandinavian populations of Arabidopsis lyrata (Brassicaceae)
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany.
2007 (English)In: American Journal of Botany, ISSN 0002-9122, E-ISSN 1537-2197, Vol. 94, no 7, 1146-1155 p.Article in journal (Refereed) Published
Abstract [en]

Colonization history, landscape structure, and environmental conditions may influence patterns of neutral genetic variation because of their effects on gene flow and reproductive mode. We compared variation at microsatellite loci within and among 26 Arabidopsis lyrata populations in two disjunct areas of its distribution in northern Europe (Norway and Sweden). The two areas probably share a common colonization history but differ in size (Norwegian range markedly larger than Swedish range), landscape structure (mountains vs. coast), and habitat conditions likely to affect patterns of gene flow and opportunities for sexual reproduction. Within-population genetic diversity was not related to latitude but was higher in Sweden than in Norway. Population differentiation was stronger among Norwegian than among Swedish populations (F-ST = 0.23 vs. F-ST = 0.18). The frequency of clonal propagation (proportion of identical multilocus genotypes) increased with decreasing population size, was higher in Norwegian than in Swedish populations, but was not related to altitude or substrate. Differences in genetic structure are discussed in relation to population characteristics and range size in the two areas. The results demonstrate that the possibility of clonal propagation should be considered when developing strategies for sampling and analyzing data in ecological and genetic studies of this emerging model species.

Place, publisher, year, edition, pages
2007. Vol. 94, no 7, 1146-1155 p.
Keyword [en]
Arabidopsis lyrata, Brassicaceae, clonality, genetic structure, microsatellites, Scandinavia
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:uu:diva-14466ISI: 000249830800008OAI: oai:DiVA.org:uu-14466DiVA: diva2:42236
Available from: 2008-01-30 Created: 2008-01-30 Last updated: 2017-12-11Bibliographically approved

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Ågren, Jon

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