HinsingerGaudeulCoulouxEtAl2014

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Hinsinger, D. D., Gaudeul, M., Couloux, A., Bousquet, J., Frascaria-Lacoste, N. (2014) The phylogeography of Eurasian Fraxinus species reveals ancient transcontinental reticulation. Molecular Phylogenetics and Evolution, 77:223-237.

Résumé

To investigate the biogeographical history of ashes species of the Eurasian section Fraxinus and to test the hypothesis of ancient reticulations, we sequenced nuclear DNA (nETS and nITS, 1075 bp) for 533 samples and scored AFLP for 63 samples of Eurasian ashes within the section Fraxinus. The nITS phylogeny retrieved the classical view of the evolution of the section, whereas nETS phylogeny indicated an unexpected separation of F. angustifolia in two paraphyletic groups, respectively found in southeastern Europe and in the other parts of the Mediterranean basin. In the nETS phylogeny, the former group was closely related to F. excelsior, whereas the later was closely related to F. mandshurica, a species which is restricted nowadays to northeastern Asia. This topological incongruence between the two loci indicated the occurrence of an ancient reticulation between European and Asian ash species. Several other ancient reticulation events between the two European species and the other species of the section were supported by the posterior predictive checking method. Some of these reticulation events would have occurred during the Miocene, when climatic variations may have lead these species to expand their distribution range and come into contact. The recurrent reticulations observed among Eurasian ash species indicate that they should be considered as conspecific taxa, with subspecific status for some groups. Altogether, the results of the present study provide a rare documented evidence for the occurrence of multiple ancient reticulations within a group of temperate tree taxa with modern disjunct distributions in Eurasia. These ancient reticulation events indicate that the speciation process is slow in ashes, necessitating long periods of geographical isolation. The implications for speciation processes in temperate trees with similar life history and reproductive biology are discussed. (C) 2014 Elsevier Inc. All rights reserved.

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@ARTICLE { HinsingerGaudeulCoulouxEtAl2014,
    AUTHOR = { Hinsinger, D. D. and Gaudeul, M. and Couloux, A. and Bousquet, J. and Frascaria-Lacoste, N. },
    TITLE = { The phylogeography of Eurasian Fraxinus species reveals ancient transcontinental reticulation },
    JOURNAL = { Molecular Phylogenetics and Evolution },
    YEAR = { 2014 },
    VOLUME = { 77 },
    PAGES = { 223-237 },
    MONTH = { Aug },
    ABSTRACT = { To investigate the biogeographical history of ashes species of the Eurasian section Fraxinus and to test the hypothesis of ancient reticulations, we sequenced nuclear DNA (nETS and nITS, 1075 bp) for 533 samples and scored AFLP for 63 samples of Eurasian ashes within the section Fraxinus. The nITS phylogeny retrieved the classical view of the evolution of the section, whereas nETS phylogeny indicated an unexpected separation of F. angustifolia in two paraphyletic groups, respectively found in southeastern Europe and in the other parts of the Mediterranean basin. In the nETS phylogeny, the former group was closely related to F. excelsior, whereas the later was closely related to F. mandshurica, a species which is restricted nowadays to northeastern Asia. This topological incongruence between the two loci indicated the occurrence of an ancient reticulation between European and Asian ash species. Several other ancient reticulation events between the two European species and the other species of the section were supported by the posterior predictive checking method. Some of these reticulation events would have occurred during the Miocene, when climatic variations may have lead these species to expand their distribution range and come into contact. The recurrent reticulations observed among Eurasian ash species indicate that they should be considered as conspecific taxa, with subspecific status for some groups. Altogether, the results of the present study provide a rare documented evidence for the occurrence of multiple ancient reticulations within a group of temperate tree taxa with modern disjunct distributions in Eurasia. These ancient reticulation events indicate that the speciation process is slow in ashes, necessitating long periods of geographical isolation. The implications for speciation processes in temperate trees with similar life history and reproductive biology are discussed. (C) 2014 Elsevier Inc. All rights reserved. },
    ADDRESS = { 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA },
    AFFILIATION = { Hinsinger, DD (Reprint Author), Univ Paris 11, CNRS, UMR 8079, Lab Ecol Systemat \& Evolut, F-91405 Orsay, France. Hinsinger, Damien D.; Frascaria-Lacoste, Nathalie, AgroParisTech, UMR 8079, F-91405 Orsay, France. Hinsinger, Damien D.; Frascaria-Lacoste, Nathalie, CNRS, UMR 8079, F-910405 Orsay, France. Hinsinger, Damien D.; Frascaria-Lacoste, Nathalie, Univ Paris 11, UMR 8079, F-91000 Orsay, France. Hinsinger, Damien D.; Bousquet, Jean, Univ Laval, Ctr Etud Foret, Chaire Rech Canada Genom Forestiere \& Environm, Quebec City, PQ G1V 0A6, Canada. Hinsinger, Damien D.; Bousquet, Jean, Univ Laval, Inst Biol Integrat \& Syst, Quebec City, PQ G1V 0A6, Canada. Gaudeul, Myriam, Museum Natl Hist Nat, UMR CNRS Origine Struct \& Evolut Biodivers 7205, F-75005 Paris, France. Couloux, Arnaud, Genoscope, Ctr Natl Sequencage, F-91057 Evry, France. },
    AUTHOR-EMAIL = { damien.hinsinger@u-psud.fr gaudeul@mnhn.fr acouloux@genoscope.cns.fr jean.bousquet@sbf.ulaval.ca nathalie.frascaria@u-psud.fr },
    DOC-DELIVERY-NUMBER = { AJ8CH },
    DOI = { 10.1016/j.ympev.2014.04.021 },
    EISSN = { 1095-9513 },
    FUNDING-ACKNOWLEDGEMENT = { European research {[}RAP-QLK-52001-00631]; Ministere des Affaires Etrangeres (Bourse Lavoisier); French Ministry of Education and the Universite Paris-Sud 11; Consortium National de Recherche en Genomique; Service de Systematique Moleculaire of the Museum National d'Histoire Naturelle {[}IFR 101]; Genoscope {[}2005/67] },
    FUNDING-TEXT = { We are grateful to J. Dufour (INRA Orleans) for his help in population sampling under the European research contract RAP-QLK-52001-00631 and to Paola Bertolino for helping with the laboratory and field collections. Thanks to J. Laroche for access to phylogenetic programs and the bioinformatics platform of the Institute for Systems and Integrative Biology at Universite Laval, Quebec, J.-T. Brandenburg for writing the script used in the reduced dataset analyses, N. Miyamoto at the Forest Tree Breeding Centre, Japan, for providing wild F. mandshurica samples, and two anonymous reviewers for their constructive comments. D.D. Hinsinger is the recipient of a fellowship Grant from the Ministere des Affaires Etrangeres (Bourse Lavoisier) and received financial support from the French Ministry of Education and the Universite Paris-Sud 11.This work was supported by the ``Consortium National de Recherche en Genomique{}, and the ``Service de Systematique Moleculaire{} of the Museum National d'Histoire Naturelle (IFR 101). It is part of agreement No. 2005/67 between Genoscope and the Museum National d'Histoire Naturelle on the project ``Macrophylogeny of Life{''}, which is directed by Guillaume Lecointre. },
    ISSN = { 1055-7903 },
    JOURNAL-ISO = { Mol. Phylogenet. Evol. },
    KEYWORDS = { nITS; nETS; AFLP; Reticulate evolution; Topological incongruence; Geographic disjunction },
    KEYWORDS-PLUS = { NUCLEAR RIBOSOMAL DNA; EXTERNAL TRANSCRIBED SPACER; CHECKER MALLOWS SIDALCEA; EXCELSIOR-L.; GENETIC-VARIATION; CLIMATE-CHANGE; PHYLOGENETIC ANALYSIS; POPULATION-STRUCTURE; NORTHERN-HEMISPHERE; 18S-26S RDNA },
    LANGUAGE = { English },
    NUMBER-OF-CITED-REFERENCES = { 142 },
    OWNER = { nafon9 },
    PUBLISHER = { ACADEMIC PRESS INC ELSEVIER SCIENCE },
    RESEARCH-AREAS = { Biochemistry \& Molecular Biology; Evolutionary Biology; Genetics \& Heredity },
    TIMES-CITED = { 0 },
    TIMESTAMP = { 2014.08.14 },
    TYPE = { Article },
    UNIQUE-ID = { ISI:000337929800023 },
    WEB-OF-SCIENCE-CATEGORIES = { Biochemistry \& Molecular Biology; Evolutionary Biology; Genetics \& Heredity },
}

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