Shewanella submarina sp. nov., a gammaproteobacterium isolated from marine water
Date
2019Author
SudhaRani, P.
Saini, M.K.
AnilKumar, P.
SampathKumar, G.
Kumar, Shekhar
Vemuluri, V.R.
Srinivas, T.N.R.
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A curved-rod-shaped bacterium was isolated from a marine (100-m depth) water sample collected from Bay of Bengal, Visakhapatnam, India. Strain NIO-S14T, was Gram-stain-negative, motile and pale-yellow. NIO-S14T was able to grow aerobically and anaerobically and could utilize a number of organic substrates. Major fatty acids were C12-:-0, iso-C13-:-0, C14-:-0, iso-C15-:-0, C16-:-0 and C16-:-1-7c and/or C16-:-1-6c (summed feature 3). NIO-S14T contained diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, two unidentified aminophospholipids and six unidentified lipids as polar lipids. The DNA G+C-content of NIO-S14T was 47.9-mol%. The 16S rRNA gene sequence comparisons indicated that the isolate represented a member of the family Shewanellaceae within the class Gammaproteobacteria . According to the results of 16S rRNA gene sequence analysis, NIO-S14T was closely related to Shewanella corallii with a pair-wise sequence similarity of 99.26-%. On the basis of the sequence comparison, NIO-S14T clustered with Shewanella corallii and together they clustered with Shewanella mangrovi and seven other species of the genus Shewanella but were distantly related. DNA-DNA hybridization between NIO-S14T and Shewanella corallii DSM 21332Trevealed a relatedness of 35-%. Distinct morphological, physiological and genotypic differences from these previously described taxa supported the classification of NIO-S14T as a representative of a novel species of the genus Shewanella , for which the name Shewanella submarina sp. nov. is proposed. The type strain of Shewanella submarina is NIO-S14T (=MTCC 12524T=KCTC 52277T=LMG 30752T).
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