The phylogenetic position of the pelobiont Mastigamoeba balamuthi based on sequences of rDNA and translation elongation factors EF-1alpha and EF-2

The Journal of Eukaryotic Microbiology
Nobuko ArisueM Müller

Abstract

The taxonomic position and phylogenetic relationships of the Pelobionta, an amitochondriate amoeboflagellate group, are not yet completely settled. To provide more information, we obtained sequences for the large subunit rDNA gene, the gene for translation elongation factor 1alpha, and for a large part of the gene encoding translation elongation factor 2 from a representative of this group, Mastigamoeba balamuthi (formerly Phreatamoeba balamuthi). The gene for the large subunit rDNA was unusually large compared to those of other protists, a phenomenon that had previously been observed for the gene encoding the small subunit rDNA. Phylogenetic reconstruction using a maximum likelihood method was performed with these sequences, as well as the gene encoding the small subunit rDNA. When evaluated individually, the M. balamuthi genes for the small and large subunit rDNAs and elongation factor 1alpha had a most recent common ancestor with either the Mycetozoa (slime molds) or with Entamoeba histolytica. A clade formed by M. balamuthi, E. histolytica, and Mycetozoa was not rejected statistically for any of the sequences. A combined maximum likelihood analysis using 3,935 positions from all molecules suggested that these three taxonomi...Continue Reading

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Citations

Jun 1, 2005·Molecular Phylogenetics and Evolution·William M Fischer, Jeffrey D Palmer
Jun 7, 2006·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Andrew J Roger, Laura A Hug
Apr 2, 2009·The Journal of Eukaryotic Microbiology·Jan Pawlowski, Fabien Burki
Oct 20, 2004·International Journal for Parasitology·Charlotte K OmotoL David Sibley
Jun 4, 2004·Molecular Biology and Evolution·Hervé PhilippeDidier Casane
Sep 9, 2004·The Journal of Eukaryotic Microbiology·Julia WalochnikHorst Aspöck
Oct 8, 2005·Journal of Molecular Evolution·Miako SakaguchiIsao Inouye
Nov 13, 2004·The Journal of Eukaryotic Microbiology·Sergey I NikolaevNikolay B Petrov

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Datasets Mentioned

BETA
BE636646

Methods Mentioned

BETA
PCR
GTPase
electrophoresis

Software Mentioned

LogDet
CONSEL
BASEML
NUCML
PROTML
NJDIST
R
MOLPHY
AAML

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