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Plastome data reveal multiple geographic origins of Quercus Group Ilex

hal.structure.identifierDepartment of Agriculture and Forestry Science [Viterbo] [DAFNE]
dc.contributor.authorSIMEONE, Marco Cosimo
hal.structure.identifierDepartment of Palaeozoology [Wien]
dc.contributor.authorGRIMM, Guido W.
hal.structure.identifierUniversità degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
dc.contributor.authorPAPINI, Alessio
hal.structure.identifierDepartment of Agriculture and Forestry Science [Viterbo] [DAFNE]
dc.contributor.authorVESSELLA, Federico
hal.structure.identifierDepartment of Agriculture and Forestry Science [Viterbo] [DAFNE]
dc.contributor.authorCARDONI, Simone
hal.structure.identifierUniversità degli studi di Trieste = University of Trieste
dc.contributor.authorTORDONI, Enrico
hal.structure.identifierStazione Zoologica Anton Dohrn [SZN]
dc.contributor.authorPIREDDA, Roberta
hal.structure.identifierfrom patterns to models in computational biodiversity and biotechnology [PLEIADE]
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorFRANC, Alain
hal.structure.identifierDepartment of Palaeozoology [Wien]
dc.contributor.authorDENK, Thomas
dc.date.issued2016-04-21
dc.identifier.issn2167-8359
dc.description.abstractEnNucleotide sequences from the plastome are currently the main source for assessing taxonomic and phylogenetic relationships in flowering plants and their historical biogeography at all hierarchical levels. One major exception is the large and economically important genus Quercus (oaks). Whereas differentiation patterns of the nuclear genome are in agreement with morphology and the fossil record, diversity patterns in the plastome are at odds with established taxonomic and phylogenetic relationships. However, the extent and evolutionary implications of this incongruence has yet to be fully uncovered. The DNA sequence divergence of four Euro-Mediterranean Group Ilex oak species (Quercus ilex L., Q. coccifera L., Q. aucheri Jaub. & Spach., Q. alnifolia Poech.) was explored at three chloroplast markers (rbcL, trnK/matK, trnH-psbA). Phylogenetic relationships were reconstructed including worldwide members of additional 55 species representing all Quercus subgeneric groups. Family and order sequence data were harvested from gene banks to better frame the observed divergence in larger taxonomic contexts. We found a strong geographic sorting in the focal group and the genus in general that is entirely decoupled from species boundaries. High plastid divergence in members of Quercus Group Ilex, including haplotypes shared with related, but long isolated oak lineages, point towards multiple geographic origins of this group of oaks. The results suggest that incomplete lineage sorting and repeated phases of asymmetrical introgression among ancestral lineages of Group Ilex and two other main Groups of Eurasian oaks (Cyclobalanopsis and Cerris) caused this complex pattern. Comparison with the current phylogenetic synthesis also suggests an initial high- versus mid-latitude biogeographic split within Quercus. High plastome plasticity of Group Ilex reflects geographic area disruptions, possibly linked with high tectonic activity of past and modern distribution ranges, that did not leave imprints in the nuclear genome of modern species and infrageneric lineages.
dc.language.isoen
dc.publisherPeerJ
dc.subject.enmediterranean
dc.subject.enincomplete lineage sorting
dc.subject.enfagaceae
dc.subject.endecoupled phylogenies
dc.subject.enancient introgression
dc.title.enPlastome data reveal multiple geographic origins of Quercus Group Ilex
dc.typeArticle de revue
dc.identifier.doi10.7717/peerj.1897
dc.subject.halInformatique [cs]/Bio-informatique [q-bio.QM]
bordeaux.journalPeerJ
bordeaux.pagee1897
bordeaux.volume4
bordeaux.peerReviewedoui
hal.identifierhal-01426766
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01426766v1
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