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Journal Article

African genomes illuminate the early history and transition to selfing in Arabidopsis thaliana

MPS-Authors

Durvasula,  Arun
MPI for Plant Breeding Research, Max Planck Society;
Department of Structural and Computational Biology, University of Vienna;
Vienna Biocenter,, Vienna;

Fulgione,  Andrea
MPI for Plant Breeding Research, Max Planck Society;
Department of Structural and Computational Biology, University of Vienna;
Vienna Biocenter,, Vienna;

Gutaker,  Rafal M.
Max Planck Institute for Developmental Biology, Max Planck Society;

Flood,  Padraic J.
MPI for Plant Breeding Research, Max Planck Society;

Neto,  Celia
MPI for Plant Breeding Research, Max Planck Society;

Burbano,  Hernyn A.
Max Planck Institute for Developmental Biology, Max Planck Society;

Hancock,  Angela M.
MPI for Plant Breeding Research, Max Planck Society;
Department of Structural and Computational Biology, University of Vienna;
Vienna Biocenter,, Vienna;

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Citation

Durvasula, A., Fulgione, A., Gutaker, R. M., Alacakaptan, S. I., Flood, P. J., Neto, C., et al. (2017). African genomes illuminate the early history and transition to selfing in Arabidopsis thaliana. Proceedings of the National Academy of Sciences of the United States of America, 114(20), 5213-5218. doi:10.1073/pnas.1616736114.


Cite as: http://hdl.handle.net/21.11116/0000-0002-0492-4
Abstract
Over the past 20 y, many studies have examined the history of the plant ecological and molecular model, Arabidopsis thaliana, in Europe and North America. Although these studies informed us about the recent history of the species, the early history has remained elusive. In a large-scale genomic analysis of African A. thaliana, we sequenced the genomes of 78 modern and herbarium samples from Africa and analyzed these together with over 1,000 previously sequenced Eurasian samples. In striking contrast to expectations, we find that all African individuals sampled are native to this continent, including those from sub-Saharan Africa. Moreover, we show that Africa harbors the greatest variation and represents the deepest history in the A. thaliana lineage. Our results also reveal evidence that selfing, a major defining characteristic of the species, evolved in a single geographic region, best represented today within Africa. Demographic inference supports a model in which the ancestral A. thaliana population began to split by 120-90 kya, during the last interglacial and Abbassia pluvial, and Eurasian populations subsequently separated from one another at around 40 kya. This bears striking similarities to the patterns observed for diverse species, including humans, implying a key role for climatic events during interglacial and pluvial periods in shaping the histories and current distributions of a wide range of species.