1887

Abstract

A novel Gram-negative, rod-shaped, motile bacterium, designated strain AK13, was isolated from a sediment sample collected from mangrove of Namkhana, Sunderbans, West Bengal, India. Strain AK13 was positive for oxidase, DNase and lipase activities and negative for catalase, gelatinase, ornithine decarboxylase, lysine decarboxylase, nitrate reductase, aesculinase and urease activities. The fatty acids were dominated by iso-C, iso-C 3-OH, iso-C, iso-C, iso-Cω9 and summed feature 3 (Cω7 and/or iso-C 2-OH). Strain AK13 contained Q-8 as the major respiratory quinone and diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylserine, two unidentified aminolipids, one unidentified glycolipid and one unidentified lipid as the polar lipids. The DNA G+C content of strain AK13 was 55.2 mol%. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the type strain of , of the family (phylum ), was the closest neighbour of strain AK13, with 95.2 % sequence similarity. Other members of the family showed sequence similarities <94.4 %. Based on the phenotypic characteristics and phylogenetic inference, strain AK13 is proposed as a member of a novel species of the genus , sp. nov.; the type strain is AK13 ( = MTCC 11082  = DSM 24914). An emended description of the genus is also provided.

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2013-01-01
2020-01-22
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