A molecular phylogeny for the large African orchid genus Disa

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dc.contributor.authorBytebier B.
dc.contributor.authorBellstedt D.U.
dc.contributor.authorPeter Linder H.
dc.date.accessioned2011-05-15T15:57:21Z
dc.date.available2011-05-15T15:57:21Z
dc.date.issued2007
dc.description.abstractPhylogenetic relationships were inferred for the African subtribe Disinae (Orchidoideae, Orchidaceae), which include the large genus Disa and the small genus Schizodium. One nuclear (ITS) gene region and two plastid (trnLF and matK) gene regions were sequenced for 136 ingroup, representing 70% of all known Disinae species, as well as for 7 outgroup taxa. The combined data matrix contained 4094 characters and was analysed using parsimony and Bayesian inference. Our results show that the generic status of Schizodium can no longer be supported, as it is deeply embedded within the genus Disa. Furthermore, the currently recognised subgenera do not reflect the phylogenetic relationships and should be rejected. Several of the currently recognised sections are monophyletic, others contain misplaced elements, while some are polyphyletic. Morphological divergence, rather than convergence, has hampered previous attempts at a phylogenetic classification of the Disinae. On the basis of our molecular phylogenetic hypothesis, we propose a monotypic subtribe Disinae and a subdivision of the genus Disa into 18 sections. © 2006 Elsevier Inc. All rights reserved.
dc.description.versionArticle
dc.identifier.citationMolecular Phylogenetics and Evolution
dc.identifier.citation43
dc.identifier.citation1
dc.identifier.issn10557903
dc.identifier.other10.1016/j.ympev.2006.08.014
dc.identifier.urihttp://hdl.handle.net/10019.1/10353
dc.subjectribosomal spacer DNA
dc.subjectAfrica
dc.subjectarticle
dc.subjectBayes theorem
dc.subjectbiological model
dc.subjectclassification
dc.subjectcomparative study
dc.subjectDNA sequence
dc.subjectgenetics
dc.subjecthistology
dc.subjectmolecular genetics
dc.subjectnucleotide sequence
dc.subjectOrchidaceae
dc.subjectphylogeny
dc.subjectplastid
dc.subjectAfrica
dc.subjectBase Sequence
dc.subjectBayes Theorem
dc.subjectDNA, Ribosomal Spacer
dc.subjectModels, Genetic
dc.subjectMolecular Sequence Data
dc.subjectOrchidaceae
dc.subjectPhylogeny
dc.subjectPlastids
dc.subjectSequence Analysis, DNA
dc.subjectDisa
dc.subjectDisinae
dc.subjectOrchidaceae
dc.subjectOrchidoideae
dc.titleA molecular phylogeny for the large African orchid genus Disa
dc.typeArticle
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