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Pelagibacillus goriensis gen. nov., sp. nov., a moderately halotolerant bacterium isolated from coastal water off the east coast of Korea

¹ School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, San 56-1 Shillim-dong, Kwanak-gu, Seoul 151-742, Republic of Korea
² Safety and Technology Department, Korea Hydro and Nuclear Power Co. Ltd, 167 Samseong-dong, Gangnam-gu, Seoul 135-791, Republic of Korea
³ Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Taejon, Republic of Korea

Correspondence
Byung Cheol Cho
bccho{at}snu.ac.kr

A Gram-positive, moderately halotolerant bacterium, designated CL-GR16^T, was isolated from coastal water off the east coast of Korea. The strain was strictly aerobic, rod-shaped, motile by means of peritrichous flagella and produced ellipsoidal spores. Phylogenetic analysis based on 16S rRNA gene sequences revealed that the isolate represented an independent lineage within Bacillus rRNA group 1, showing 93.6–94.6 % similarity with respect to the genus Ornithinibacillus, 94.0 % with respect to Paucisalibacillus, 91.0–93.5 % with respect to Virgibacillus, 93.2–93.3 % with respect to Salinibacillus and 92.8–93.2 % with respect to Oceanobacillus. The optimum temperature and pH for growth were 30 °C and pH 7.5. Strain CL-GR16^T was able to grow at NaCl concentrations from 0 to 14 %, with optimum growth occurring at 0–2 % NaCl. The strain lacked oxidase. The major fatty acids were anteiso-C_{15 : 0} (65.6 %), anteiso-C_{17 : 0} (11.0 %) and iso-C_{15 : 0} (9.1 %). The polar lipids were diphosphatidylglycerol, phosphatidylglycerol and an unidentified glycolipid. The predominant menaquinone was MK-7. The G+C content of the DNA was 43 mol%. On the basis of the results of the polyphasic analysis, strain CL-GR16^T represents a novel genus and species, for which the name Pelagibacillus goriensis gen. nov., sp. nov. is proposed. The type strain is strain CL-GR16^T (=KCCM 42329^T=DSM 18252^T).

The whole-cell fatty acid composition of strain CL-GR16^T and related species, and a two-dimensional thin-layer chromatogram of the polar lipids of strain CL-GR16^T are available as supplementary data with the online version of this paper.

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