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    Oceanospirillum nioense sp. nov., a marine bacterium isolated from sediment sample of Palk bay, India

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    Antonie_van_Leeuwenhoek_103_1015a.pdf (564.3Kb)
    Date
    2013
    Author
    Krishna, K.K.
    Bhumika, V.
    Thomas, M.
    AnilKumar, P.
    Srinivas, T.N.R.
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    Abstract
    A novel Gram-negative, spiral shaped, motile bacterium, designated strain NIO-S6T, was isolated from a sediment sample collected from Offshore Rameswaram, Tamilnadu, India. Strain NIO-S6 sup(T) was found to be positive for oxidase, DNase and lysine decarboxylase activities and negative for catalase, gelatinase, lipase, ornithine decarboxylase, nitrate reductase, aesculinase, amylase and urease activities. The fatty acids were determined to be dominated by C sub(10:0) 3OH, C sub(16:0), C sub(16:1) and C sub(18:1). Strain NIO-S6 sup(T) contains Q-8 as the major respiratory quinone. The DNA G+C content of the strain NIO-S6 sup(T) was determined to be 49.5 plus or minus 0.6 mol percent. Phylogenetic analysis based on 16S rRNA gene sequence of strain NIO-S6 sup(T) indicated Oceanospirillum linum and Oceanospirillum maris of the family Oceanospirillaceae (phylum Proteobacteria) are the closest related species with sequence similarities of 98.4 and 97.8 percent respectively. Other members of the family showed sequence similarities less than 96.4 percent. However, DNA-DNA hybridization with Oceanospirillum linum LMG 5214 sup(T) and Oceanospirillum maris LMG 5213 sup(T) showed a relatedness of 31.5 and 46.9 perent with respect to strain NIO-S6 sup(T). Based on the phenotypic characteristics and on phylogenetic inference, strain NIO-S6 sup(T) is proposed as a novel species of the genus Oceanospirillum as Oceanospirillum nioense sp. nov. and the type strain is NIO-S6 sup(T) (=MTCC 11154 sup(T) = KCTC 32008 sup(T)).
    URI
    http://drs.nio.org/drs/handle/2264/4319
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