Scientific article
Open access

Phylogeny of Lobose Amoebae Based on Actin and Small-Subunit Ribosomal RNA Genes

Published inMolecular biology and evolution, vol. 20, no. 11, p. 1881-1886
Publication date2003-06-27
First online date2003-06-27

Lobose amoebae are abundant free-living protists and important pathogenic agents, yet their evolutionary history and position in the universal tree of life are poorly known. Molecular data for lobose amoebae are limited to a few species, and all phylogenetic studies published so far lacked representatives of many of their taxonomic groups. Here we analyze actin and small-subunit ribosomal RNA (SSU rRNA) gene sequences of a broad taxon sampling of naked, lobose amoebae. Our results support the existence of a monophyletic Amoebozoa clade, which comprises all lobose amoebae examined so far, the amitochondriate pelobionts and entamoebids, and the slime molds. Both actin and SSU rRNA phylogenies distinguish two well-defined clades of amoebae, the “Gymnamoebia sensu stricto” and the Archamoebae (pelobionts + entamoebids), and one weakly supported and ill-resolved group comprising some naked, lobose amoebae and the Mycetozoa.

  • Actin
  • Amoebozoa
  • Lobosea
  • Molecular phylogeny
  • Small-subunit ribosomal RNA
Citation (ISO format)
FAHRNI, José et al. Phylogeny of Lobose Amoebae Based on Actin and Small-Subunit Ribosomal RNA Genes. In: Molecular biology and evolution, 2003, vol. 20, n° 11, p. 1881–1886. doi: 10.1093/molbev/msg201
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Article (Published version)
ISSN of the journal0737-4038

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