Microbiology Society, International Journal of Systematic and Evolutionary Microbiology, Pt_12(63), p. 4421-4427, 2013
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A facultatively anaerobic nitrogen-fixing bacterium, strain C7T, was isolated from a permafrost cryopeg on the Yamal Peninsula, Russia. Comparative analysis of 16S rRNA gene sequences revealed that this bacterium was closely related toCelerinatantimonas diazotrophicaS-G2-2Twith a similarity of 95.5 %. Strain C7Tdiffered fromCelerinatantimonas diazotrophicain its ability to hydrolyse gelatin and inability to used-mannose, melibiose,l-rhamnose,myo-inositol, lactose, lactulose,d-mannitol, trehalose,dl-lactate, glycogen orl-proline as sole carbon sources. In addition, strain C7Tgrew over a temperature range of 0–34 °C with optimum growth at 18–22 °C. The whole-cell fatty acid profile included C16 : 0, C16 : 1ω7, C18 : 1ω7, C17cyclo and summed feature 2 [comprising C12 : 0aldehyde and/or unknown fatty acid 10.913 (MIDI designation) and/or iso-C16 : 1/C14 : 03-OH]. The DNA G+C content was 44.7 mol%. Strain C7Tis thus considered to represent a novel species, for which the nameCelerinatantimonas yamalensissp. nov. is proposed. The type strain is C7T( = VKM B-2511T = DSM 21888T).