1887

Abstract

A coccoid- and amorphous-shaped, non-gliding, reddish bacterium, designated SG-29, was isolated from seawater in the western North Pacific Ocean near Japan. The strain was Gram-stain-negative, obligately aerobic, heterotrophic and catalase-positive. Nitrate was reduced to nitrogen and acid was produced from aesculin, turanose, 2-keto-gluconate and arabinose. Growth occurred with 1–5 % NaCl (optimum 2 % NaCl) and at 5–37 °C (optimum 20–30 °C). The G+C content of genomic DNA was 68.9 mol% (HPLC). The predominant isoprenoid quinone was MK-7 and the major cellular fatty acids (>10 %) were iso-Cω9, Cω8 and iso-C. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain SG-29 belonged to the phylum . The most closely related strain was JCM 9785, with which the isolate exhibited 86.1 % 16S rRNA gene sequence similarity. On the basis of phenotypic and phylogenetic features, strain SG-29 is classified in a novel genus and species within the family ‘’, for which the name gen. nov., sp. nov. ( = NBRC 107124  = KCTC 23197) is proposed.

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2011-09-01
2019-09-17
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