Halopeptonella vilamensis gen. nov, sp. nov., a halophilic strictly aerobic bacterium of the family Ectothiorhodospiraceae

JAVIER MENES; CLAUDIA VIERA; FARÍAS, MARÍA EUGENIA; SEUFFERHELD, MANFREDO

EXTREMOPHILES

SPRINGER TOKYO

Lugar: Tokyo; Año: 2015

1431-0651

A Gram-negative, halophilic, heterotrophic, rod-shaped, non-spore-forming bacterium (SV525(T)) was isolated from the sediment of a hypersaline lake located at 4600 m above sea level (Laguna Vilama, Argentina). Strain SV525(T) was strictly aerobic and formed pink-to-magenta colonies. Growth occurred at 10-35 °C (optimum 25-30 °C), at pH levels 6.0-8.5 (optimum 7.0) and at NaCl concentrations of 7.5-25 % (w/v) with an optimum at 10-15 % (w/v). The strain required sodium and magnesium but not potassium ions for growth. Grows with tryptone, or Bacto Peptone as sole carbon and energy source and requires yeast extract for growth. It produced catalase and oxidase. The predominant ubiquinone was Q-8 and the major fatty acids comprised C18:1 ω7c, C16:0 and C18:0. The DNA G+C content was 60.4 mol% and its polar lipids consisted of diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and a phosphoglycolipid. Phylogenetic analysis based on 16S rRNA gene indicated that strain SV525(T) belongs to the family Ectothiorhodospiraceae within the class Gammaproteobacteria. On the basis of phylogenetic and phenotypic data, SV525(T) represents a novel genus and species, for which the name Halopeptonella vilamensis gen. nov., sp. nov. is proposed. The type strain is SV525(T) (=DSM 21056(T) =JCM 16388(T) =NCIMB 14596(T)). Halopeptonella vilamensis gen. nov, sp. nov., a halophilic strictly aerobic bacterium of the family Ectothiorhodospiraceae - ResearchGate. Available from: http://www.researchgate.net/publication/282944860_Halopeptonella_vilamensis_gen._nov_sp._nov._a_halophilic_strictly_aerobic_bacterium_of_the_family_Ectothiorhodospiraceae [accessed Oct 23, 2015].