Pararhodobacter marinus sp. nov., a bacterium isolated from marine sediment in the East China Sea and emended description of the genus Pararhodobacter

International Journal of Systematic and Evolutionary Microbiology
Weiyan ZhangShan He

Abstract

A Gram-negative, rod-shaped, non-motile and strictly aerobic bacterium, designated ZQ420T, was isolated from marine sediment sampled on Zhoushan Island located in the East China Sea. Strain ZQ420T was able to grow at 10-45 °C, 0-12.0 % (w/v) NaCl and pH 5.5-9.0. Catalase and oxidase activities, nitrate reduction, H2S production, hydrolysis of starch, casein, Tween 20, 40 and 80 were positive. Indole, methyl red, Voges-Proskauer test, hydrolysis of gelatin and Tween 60 were negative. The major cellular fatty acids were C18 : 1ω7c, C16 : 0 and 11-methyl C18 : 1ω7c. Ubiquinone-10 (Q-10) was the only detected respiratory quinone. The polar lipids consisted of diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, three unidentified phospholipids, three unidentified glycolipids, two unidentified aminolipid and two unidentified lipids. The DNA G+C content was 64.8 mol%. According to 16S rRNA gene sequence similarities, strain ZQ420T shared 97.9, 96.3 and 96.3 % similarities to the following species with validated names Pararhodobacteraggregans D1-19T, Pseudo rhodobacter psychrotolerans PAMC27389T and Pseudo rhodobacter collinsensis 4-T-34T, respectively. While sharing lower sequence similarities (<96.0 %) to other ty...Continue Reading

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