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Sequencing of the genus Arabidopsis identifies a complex history of nonbifurcating speciation and abundant trans-specific polymorphism

Novikova, P. Y. (author)
Gregor Mendel Institute, Austrian Academy of Sciences, Vienna Biocenter (VBC), Vienna, Austria,University of Veterinary Medicine Vienna
Hohmann, N. (author)
Centre for Organismal Studies Heidelberg, University of Heidelberg, Heidelberg, Germany
Nizhynska, V. (author)
Gregor Mendel Institute, Austrian Academy of Sciences, Vienna Biocenter (VBC), Vienna, Austria
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Tsuchimatsu, T. (author)
Gregor Mendel Institute, Austrian Academy of Sciences, Vienna Biocenter (VBC), Vienna, Austria
Ali, J. (author)
Department of Plant Physiology, Ruhr-Universität Bochum, Bochum, Germany
Muir, G. (author)
Vienna Graduate School of Population Genetics, Institut für Populationsgenetik, Vetmeduni, Vienna, Austria,University of Veterinary Medicine Vienna
Guggisberg, A. (author)
Institute of Integrative Biology, ETH Zurich, Zurich, Switzerland
Paape, T. (author)
Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland
Schmid, K. (author)
Institute of Plant Breeding, Seed Science and Population Genetics, University of Hohenheim, Stuttgart, Germany
Fedorenko, O. M. (author)
Institute of Biology, Karelian Research Center, Russian Academy of Sciences, Petrozavodsk, Russian Federation,P.N. Lebedev Physical Institute of the Russian Academy of Sciences
Holm, Svante (author)
Mid Sweden University,Mittuniversitetet,Avdelningen för naturvetenskap
Säll, Torbjörn (author)
Lund University,Lunds universitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Department of Biology,Faculty of Science
Schlötterer, C. (author)
Institut für Populationsgenetik, Vetmeduni, Vienna, Austria,University of Veterinary Medicine Vienna
Marhold, K. (author)
Department of Botany, Faculty of Science, Charles University, Prague, Czech Republic,Slovak Academy of Sciences
Widmer, A. (author)
Department of Plant Physiology, Ruhr-Universität Bochum, Bochum, Germany
Sese, J. (author)
Artificial Intelligence Research Center, National Institute of Advanced Industrial Science and Technology, Tokyo, Japan,National Institute of Advanced Industrial Science and Technology (AIST)
Shimizu, K. K. (author)
Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland
Weigel, D. (author)
Max Planck Institute for Developmental Biology, Tübingen, Germany
Krämer, U. (author)
Department of Plant Physiology, Ruhr-Universität Bochum, Bochum, Germany
Koch, M. A. (author)
Centre for Organismal Studies Heidelberg, University of Heidelberg, Heidelberg, Germany
Nordborg, M. (author)
Gregor Mendel Institute, Austrian Academy of Sciences, Vienna Biocenter (VBC), Vienna, Austria
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 (creator_code:org_t)
2016-07-18
2016
English.
In: Nature Genetics. - : Springer Science and Business Media LLC. - 1061-4036 .- 1546-1718. ; 48:9, s. 1077-1082
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • The notion of species as reproductively isolated units related through a bifurcating tree implies that gene trees should generally agree with the species tree and that sister taxa should not share polymorphisms unless they diverged recently and should be equally closely related to outgroups. It is now possible to evaluate this model systematically. We sequenced multiple individuals from 27 described taxa representing the entire Arabidopsis genus. Cluster analysis identified seven groups, corresponding to described species that capture the structure of the genus. However, at the level of gene trees, only the separation of Arabidopsis thaliana from the remaining species was universally supported, and, overall, the amount of shared polymorphism demonstrated that reproductive isolation was considerably more recent than the estimated divergence times. We uncovered multiple cases of past gene flow that contradict a bifurcating species tree. Finally, we showed that the pattern of divergence differs between gene ontologies, suggesting a role for selection. © 2016 Nature America, Inc. All rights reserved.

Subject headings

NATURVETENSKAP  -- Biologi -- Genetik (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Genetics (hsv//eng)

Publication and Content Type

ref (subject category)
art (subject category)

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