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Bilaterian phylogeny based on analyses of a region of the sodium-potassium ATPase alpha-subunit gene
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolution, Genomics and Systematics, Molecular Evolution. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Cell and Molecular Biology, The Linnaeus Centre for Bioinformatics.
2004 (English)In: Journal of Molecular Evolution, ISSN 0022-2844, E-ISSN 1432-1432, Vol. 58, no 3, 252-268 p.Article in journal (Refereed) Published
Abstract [en]

Molecular investigations of deep-level relationships within and among the animal phyla have been hampered by a lack of slowly evolving genes that are amenable to study by molecular systematists. To provide new data for use in deep-level metazoan phylogenetic studies, primers were developed to amplify a 1.3-kb region of the subunit of the nuclear-encoded sodium–potassium ATPase gene from 31 bilaterians representing several phyla. Maximum parsimony, maximum likelihood, and Bayesian analyses of these sequences (combined with ATPase sequences for 23 taxa downloaded from GenBank) yield congruent trees that corroborate recent findings based on analyses of other data sets (e.g., the 18S ribosomal RNA gene). The ATPase-based trees support monophyly for several clades (including Lophotrochozoa, a form of Ecdysozoa, Vertebrata, Mollusca, Bivalvia, Gastropoda, Arachnida, Hexapoda, Coleoptera, and Diptera) but do not support monophyly for Deuterostomia, Arthropoda, or Nemertea. Parametric bootstrapping tests reject monophyly for Arthropoda and Nemertea but are unable to reject deuterostome monophyly. Overall, the sodium–potassium ATPase -subunit gene appears to be useful for deep-level studies of metazoan phylogeny.

Place, publisher, year, edition, pages
2004. Vol. 58, no 3, 252-268 p.
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Biological Sciences
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URN: urn:nbn:se:uu:diva-70071DOI: 10.1007/s00239-003-2548-9OAI: oai:DiVA.org:uu-70071DiVA: diva2:97982
Available from: 2005-04-14 Created: 2005-04-14 Last updated: 2017-11-21Bibliographically approved

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Thollesson, Mikael

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