Evolution of Archamoebae: morphological and molecular evidence for pelobionts including Rhizomastix, Entamoeba, Iodamoeba, and Endolimax
Language English Country Germany Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
23312407
DOI
10.1016/j.protis.2012.11.005
PII: S1434-4610(12)00124-1
Knihovny.cz E-resources
- MeSH
- Archamoebae classification genetics ultrastructure MeSH
- Species Specificity MeSH
- Endolimax classification genetics ultrastructure MeSH
- Entamoeba classification genetics ultrastructure MeSH
- Phylogeny MeSH
- Genes, rRNA MeSH
- Microscopy MeSH
- Evolution, Molecular * MeSH
- DNA, Protozoan analysis MeSH
- Sequence Analysis, DNA MeSH
- Animals MeSH
- Check Tag
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- DNA, Protozoan MeSH
The archamoebae form a small clade of anaerobic/microaerophilic flagellates or amoebae, comprising the pelobionts (mastigamoebids and pelomyxids) and the entamoebae. It is a member of the eukaryotic supergroup Amoebozoa. We examined 22 strains of 13 species of Mastigamoeba, Pelomyxa and Rhizomastix by light-microscopy and determined their SSU rRNA gene sequences. The SSU rRNA gene sequences of Pelomyxa palustris and Mastigella commutans in GenBank are shown to belong to P. stagnalis and Mastigamoeba punctachora, respectively. Five new species of free-living archamoebae are described: Mastigamoeba abducta, M. errans, M. guttula, M. lenta, and Rhizomastix libera spp. nov. A species of Mastigamoeba possibly living endosymbiotically in Pelomyxa was identified. Rhizomastix libera, the first known free-living member of that genus, is shown to be an archamoeba. R. libera possesses an ultrastructure unique within archamoebae: a rhizostyle formed from a modified microtubular cone and a flagellum with vanes. While many nominal species of pelobionts are extremely hard to distinguish by light microscopy, transient pseudopodial characters are worthy of further investigation as taxonomic markers.
References provided by Crossref.org
Comparative analysis of mitochondrion-related organelles in anaerobic amoebozoans
Between a Pod and a Hard Test: The Deep Evolution of Amoebae
