title: Limnohabitans australis sp. nov., isolated from a freshwater pond, and emended description of the genus Limnohabitans.
abstract: A chemo-organotrophic, aerobic, non-motile strain, MWH-BRAZ-DAM2D(T), isolated from a freshwater pond in Brazil, was characterized phenotypically, phylogenetically and chemotaxonomically. Phylogenetic analysis of 16S rRNA gene sequences indicated affiliation of the strain with the genus Limnohabitans (Comamonadaceae, Betaproteobacteria). 16S rRNA gene sequence similarities between the isolate and Limnohabitans curvus MWH-C5(T), representing the type species of the genus, and the type strains of Limnohabitans parvus and Limnohabitans planktonicus were 98.2, 96.5 and 97.0 %, respectively. DNA-DNA reassociation analyses with DNA of the type strains of all three previously described Limnohabitans species revealed similarity values in the range 26.2-44.6 %. The predominant fatty acids of the isolate were C(16 : 1)ω7c/ω6c, C(16 : 0), C(12 : 0) and C(8 : 0) 3-OH, the major quinone was ubiquinone Q-8 and the DNA G+C content was 55.8 mol%. The isolate could be discriminated from the type strains of the three Limnohabitans species by several phenotypic traits including differences in the utilization of several carbon sources. Based on the phylogeny of the isolate and its differences from the three most closely related species, the isolate represents a novel species for which the name Limnohabitans australis sp. nov. is proposed. The type strain is MWH-BRAZ-DAM2D(T) (=DSM 21646(T)=CCUG 56719(T)).
authors.affiliation: Institute for Limnology, Austrian Academy of Sciences, Mondseestrasse 9, A-5310 Mondsee, Austria.
authors.forename: Martin W
authors.initials: MW
authors.lastname: Hahn
authors.affiliation: Faculty of Science, University of South Bohemia, Branišovská 31, 37005 České Budějovice, Czech Republic.|Biology Centre of the Academy of Sciences ČR, v.v.i., Institute of Hydrobiology, Na Sádkách 7, 37005 České Budějovice, Czech Republic.
authors.forename: Vojtěch
authors.initials: V
authors.lastname: Kasalický
authors.affiliation: Biology Centre of the Academy of Sciences ČR, v.v.i., Institute of Hydrobiology, Na Sádkách 7, 37005 České Budějovice, Czech Republic.|Institute for Limnology, Austrian Academy of Sciences, Mondseestrasse 9, A-5310 Mondsee, Austria.
authors.forename: Jan
authors.initials: J
authors.lastname: Jezbera
authors.affiliation: Institute for Limnology, Austrian Academy of Sciences, Mondseestrasse 9, A-5310 Mondsee, Austria.
authors.forename: Ulrike
authors.initials: U
authors.lastname: Brandt
authors.affiliation: Faculty of Science, University of South Bohemia, Branišovská 31, 37005 České Budějovice, Czech Republic.|Biology Centre of the Academy of Sciences ČR, v.v.i., Institute of Hydrobiology, Na Sádkách 7, 37005 České Budějovice, Czech Republic.
authors.forename: Karel
authors.initials: K
authors.lastname: Šimek
mesh_terms: D015373:Bacterial Typing Techniques; D001482:Base Composition; D001938:Brazil; D042621:Comamonadaceae / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D004269:DNA, Bacterial / Q000235:genetics; D005227:Fatty Acids / Q000737:chemistry; D005618:Fresh Water / Q000382:microbiology; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D010802:Phylogeny; D061005:Ponds / Q000382:microbiology*; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D014451:Ubiquinone / Q000737:chemistry
chemical_list: D004269:DNA, Bacterial; D005227:Fatty Acids; D012336:RNA, Ribosomal, 16S; D014451:Ubiquinone; C030778:ubiquinone 8