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Abstract

A novel Gram-negative, mesophilic, slightly halophilic, catalase- and oxidase-positive, obligately aerobic bacterium, designated strain YIM-C238, was isolated from a sediment sample from a salt lake in the Qaidam Basin, north-west China. Cells were non-sporulating, non-motile, straight to slightly curved rods. Coccoid bodies and filaments of varying length developed in older cultures. Growth occurred with 0.5–6 % (w/v) NaCl [optimum, 2–3 % (w/v) NaCl], at pH 6.0–10.0 (optimum, pH 7.0–8.0) and at 10–40 °C (optimum, 25–30 °C). The major cellular fatty acids were anteiso-C, 3-OH iso-C and anteiso-C 10, and menaquinone 6 was the sole respiratory quinone. Non-diffusible carotenoid pigments were produced. Flexirubin pigments were absent. The genomic DNA G+C content was 35.8 mol%. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain YIM-C238 should be assigned to the genus . The sequence similarities between the isolate and the type strains of members of the genus were in the range 95.5–97.0 %. The combination of phylogenetic analysis, DNA–DNA hybridization data, phenotypic characteristics and chemotaxonomic differences supported the view that strain YIM-C238 represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is YIM-C238 (=CCTCC AA 207030=KCTC 22166).

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2009-03-01
2020-01-22
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vol. , part 3, pp. 569 - 573

Fatty acid compositions of strain YIM-C238 ( sp. nov.) and other species. [PDF](51 KB)



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