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Jeotgalicoccus marinus sp. nov., a marine bacterium isolated from a sea urchin

¹ Key Laboratory for Conservation and Utilization of Plant Resources of Hunan Province, College of Biology and Environmental Sciences, Jishou University, Jishou, Hunan 416000, PR China
² The Key Laboratory for Microbial Resources of the Ministry of Education, PR China, and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, Yunnan 650091, PR China
³ Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
⁴ Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, Guangdong 510301, PR China

Correspondence
Wen-Jun Li
wjli{at}ynu.edu.cn
Yi-Guang Chen
mchenjsu{at}yahoo.com.cn

A novel non-sporulating, non-motile, catalase- and oxidase-positive, facultatively anaerobic, moderately halophilic, Gram-positive coccus, designated JSM 076033^T, was isolated from a sea urchin (Hemicentrotus pulcherrimus) collected from the South China Sea. Strain JSM 076033^T was able to grow in the presence of 0.5–25.0 % (w/v) total salts and at pH 6.0–10.0 and 10–45 °C; optimum growth was observed with 5.0–10.0 % (w/v) total salts and at pH 7.0–8.0 and 25–30 °C. The major amino acid constituents of the cell wall were glycine, lysine and alanine. The major cellular fatty acids were anteiso-C_{15 : 0}, iso-C_{15 : 0} and anteiso-C_{17 : 0}. The respiratory quinones were MK-7 (60.7 %) and MK-6 (39.3 %) and the polar lipids were diphosphatidylglycerol, phosphatidylglycerol and an unidentified phospholipid. The DNA G+C content was 40.3 mol%. A phylogenetic analysis based on 16S rRNA gene sequence comparisons revealed that strain JSM 076033^T should be assigned to the genus Jeotgalicoccus. The sequence similarities between the novel isolate and the type strains of recognized Jeotgalicoccus species were in the range 95.2–97.2 %. The results of the phylogenetic analysis, combined with DNA–DNA relatedness data, phenotypic characteristics and chemotaxonomic information, support the view that strain JSM 076033^T represents a novel species of the genus Jeotgalicoccus, for which the name Jeotgalicoccus marinus sp. nov. is proposed. The type strain is JSM 076033^T (=CCTCC AA 207028^T =DSM 19772^T =KCTC 13189^T).

A supplementary table showing the fatty acid compositions of strain JSM 076033^T and members of the genus Jeotgalicoccus is available with the online version of this paper.

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