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Phylogeny of lobose amoebae based on actin and small‐subunit ribosomal RNA genes
Author(s) -
FAHRNI JOSÉ F.,
BOLIVAR IGNACIO,
BERNEY CÉDRIC,
NASSONOVA ELENA,
SMIRNOV ALEXEY,
PAWLOWSKI JAN
Publication year - 2005
Publication title -
journal of eukaryotic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 1066-5234
DOI - 10.1111/j.1550-7408.2005.05202003_1_26.x
Subject(s) - biology , monophyly , ribosomal rna , phylogenetic tree , phylogenetics , clade , 18s ribosomal rna , protist , acanthamoeba , evolutionary biology , zoology , genetics , gene
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 analyse 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, as well as 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.