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Jeotgalicoccus huakuii sp. nov., a halotolerant bacterium isolated from the seaside soil in China

¹ Nanjing Agricultural University;
² Yunnan University

³ E-mail: jiang_jjd{at}njau.edu.cn

A Gram-positive, oxidase-positive, catalase-positive, non-motile, non-spore-forming and halotolerant coccus, designated NY-2T, was isolated from a seaside soil sample in Shandong province, China. Strain NY-2T was able to grow in the presence of 0-23 % (w/v) NaCl and at pH 4.5-10.0 and 5-42°C; optimum growth was observed with 3-8 % (w/v) total salts and at pH 6.5-8.0 and 28-37°C. Chemotaxonomic analyses including fatty acid profiles, menaquinones and polar lipids, supported the affiliation of strain NY-2T to the genus Jeotgalicoccus. The predominant menaquinone of strain NY-2T was menaquinone 7 (MK-7) (100%) and the major cellular fatty acids were iso-C15: 0 (49.0%) and anteiso-C15: 0 (19.6%). The cellular polar lipids were phosphatidylglycerol, diphosphatidylglycerol and unidentified phospholipids. The DNA G+C content of strain NY-2T was 36.8 mol%. Strain NY-2T formed a coherent cluster with Jeotgalicoccus marinus JSM 076033T, Jeotgalicoccus halotolerans YKJ-101T and Jeotgalicoccus psychrophilus YKJ-115T in 16S rRNA gene sequence analysis. Based on the phylogenetic analysis, DNA-DNA relatedness, phenotypic characteristics and chemotaxonomic data, it is proposed that strain NY-2T=CCTCC AB 208288T = JCM 15687T be classified as the type strain of a novel species of the genus Jeotgalicoccus, Jeotgalicoccus huakuii sp. nov.