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On the post-glacial spread of human commensal Arabidopsis thaliana

Author

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  • Cheng-Ruei Lee

    (Gregor Mendel Institute, Austrian Academy of Sciences, Vienna Biocenter (VBC)
    Institute of Ecology and Evolutionary Biology & Institute of Plant Biology, National Taiwan University)

  • Hannes Svardal

    (Gregor Mendel Institute, Austrian Academy of Sciences, Vienna Biocenter (VBC))

  • Ashley Farlow

    (Gregor Mendel Institute, Austrian Academy of Sciences, Vienna Biocenter (VBC))

  • Moises Exposito-Alonso

    (Max Planck Institute for Developmental Biology)

  • Wei Ding

    (Max Planck Institute for Developmental Biology)

  • Polina Novikova

    (Gregor Mendel Institute, Austrian Academy of Sciences, Vienna Biocenter (VBC))

  • Carlos Alonso-Blanco

    (Centro Nacional de Biotecnología (CNB), Consejo Superior de Investigaciones Científicas (CSIC))

  • Detlef Weigel

    (Max Planck Institute for Developmental Biology)

  • Magnus Nordborg

    (Gregor Mendel Institute, Austrian Academy of Sciences, Vienna Biocenter (VBC))

Abstract

Recent work has shown that Arabidopsis thaliana contains genetic groups originating from different ice age refugia, with one particular group comprising over 95% of the current worldwide population. In Europe, relicts of other groups can be found in local populations along the Mediterranean Sea. Here we provide evidence that these ‘relicts’ occupied post-glacial Eurasia first and were later replaced by the invading ‘non-relicts’, which expanded through the east–west axis of Eurasia, leaving traces of admixture in the north and south of the species range. The non-relict expansion was likely associated with human activity and led to a demographic replacement similar to what occurred in humans. Introgressed genomic regions from relicts are associated with flowering time and enriched for genes associated with environmental conditions, such as root cap development or metal ion trans-membrane transport, which suggest that admixture with locally adapted relicts helped the non-relicts colonize new habitats.

Suggested Citation

  • Cheng-Ruei Lee & Hannes Svardal & Ashley Farlow & Moises Exposito-Alonso & Wei Ding & Polina Novikova & Carlos Alonso-Blanco & Detlef Weigel & Magnus Nordborg, 2017. "On the post-glacial spread of human commensal Arabidopsis thaliana," Nature Communications, Nature, vol. 8(1), pages 1-12, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14458
    DOI: 10.1038/ncomms14458
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    Cited by:

    1. Cristina C. Bastias & Aurélien Estarague & Denis Vile & Elza Gaignon & Cheng-Ruei Lee & Moises Exposito-Alonso & Cyrille Violle & François Vasseur, 2024. "Ecological trade-offs drive phenotypic and genetic differentiation of Arabidopsis thaliana in Europe," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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