title: Diversity of bacterial endosymbionts of environmental acanthamoeba isolates.
abstract: Free-living amoebae are frequent hosts for bacterial endosymbionts. In this study, the symbionts of eight novel environmental Acanthamoeba strains isolated from different locations worldwide were characterized. Phylogenetic analysis revealed that they were related to one of four evolutionary lineages of amoeba symbionts recognized previously. This study provides evidence for the existence of only a small number of phylogenetically well-separated groups of obligate intracellular endosymbionts of acanthamoebae with global distribution.
authors.affiliation: Department of Microbial Ecology, University of Vienna, Althanstr. 14, 1090 Vienna, Austria.
authors.forename: Stephan
authors.initials: S
authors.lastname: Schmitz-Esser
authors.forename: Elena R
authors.initials: ER
authors.lastname: Toenshoff
authors.forename: Susanne
authors.initials: S
authors.lastname: Haider
authors.forename: Eva
authors.initials: E
authors.lastname: Heinz
authors.forename: Verena M
authors.initials: VM
authors.lastname: Hoenninger
authors.forename: Michael
authors.initials: M
authors.lastname: Wagner
authors.forename: Matthias
authors.initials: M
authors.lastname: Horn
mesh_terms: D000048:Acanthamoeba / Q000235:genetics / Q000382:microbiology*; D000818:Animals; D001419:Bacteria / Q000145:classification* / Q000235:genetics; D044822:Biodiversity; D004269:DNA, Bacterial / Q000235:genetics; D016054:DNA, Protozoan / Q000235:genetics; D005798:Genes, Bacterial; D017125:Genes, Protozoan; D020459:Genes, rRNA; D019015:Geologic Sediments / Q000382:microbiology; D008969:Molecular Sequence Data; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012337:RNA, Ribosomal, 18S / Q000235:genetics; D017422:Sequence Analysis, DNA; D012988:Soil Microbiology; D013559:Symbiosis; D014871:Water Microbiology
chemical_list: D004269:DNA, Bacterial; D016054:DNA, Protozoan; D012336:RNA, Ribosomal, 16S; D012337:RNA, Ribosomal, 18S