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The Root of Eukaryote Tree Based on euBac Proteins
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Systematic Biology.
2011 (English)Conference paper, Published paper (Other academic)
Abstract [en]

Rooting the eukaryote tree is essential for understanding relationships among the eukaryotic supergroups. A data set was assembled of nuclear-encoded proteins of bacterial origin (euBacs), most of which appear to function primarily in the mitochondrion. Since endosymbiotic transfer of mitochondrial genes to the nucleus occurred after the origin of eukaryotes but before their last common ancestor, this makes bacteria a closer outgroup than Archaea, which have been used in this role previously. A concatenated data set of forty euBacs produces a single strongly supported tree, which places the supergroup Discoba as sister to the remaining mitochondriate eukaryotes. All major competing hypotheses are strongly ruled out with bootstrapping, posterior probabilities and an additive AU test. We have developed a new data set for testing deep eukaryote phylogeny, which strongly resolves all major branches and redefines the position of the root.

Place, publisher, year, edition, pages
2011.
National Category
Biological Systematics
Research subject
Biology with specialization in Systematics; Biology with specialization in Molecular Evolution
Identifiers
URN: urn:nbn:se:uu:diva-169483OAI: oai:DiVA.org:uu-169483DiVA: diva2:506934
Conference
EMBO Conference: Comparative Genomics of Eukaryotic Microorganisms: understanding the complexity of diversity, 15 – 20 October 2011 San Feliu de Guixols, Spain
Available from: 2012-03-02 Created: 2012-03-01 Last updated: 2012-03-02Bibliographically approved

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http://events.embo.org/11-comparative-genomics/

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He, Ding

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