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    Salibacterium nitratireducens sp. nov., a haloalkalitolerant bacterium isolated from a water sample from Sambhar salt lake, India.

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    Interna_Jou_System_Evolut_Microbi_68_3506a.pdf (533.8Kb)
    Date
    2018
    Author
    Singh, H.
    Kaur, M.
    Singh, S.
    Mishra, Sunita
    Kumar, S.
    Vemuluri, V.R.
    Srinivas, T.N.R.
    AnilKumar, P.
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    Abstract
    A strictly aerobic, haloalkali-tolerant, Gram-stain-positive, non-motile, rod-shaped bacterium, designated strain SMB4T, was isolated from a water sample collected from Sambhar salt lake, Rajasthan, India. Growth occurred at 25-50oC, 4-12-% (w/v) NaCl and pH of 5-9. Strain SMB4T was positive for --galactosidase, oxidase, catalase and urease activities. The fatty acids were dominated by branched forms of fatty acids with iso- and anteiso-saturated fatty acids, with a high abundance of anteiso-C15-:-0, anteiso-C17-:-0 and C18-:-0. The cell-wall peptidoglycan of strain SMB4T contained meso-diaminopimelic acid, while the polar lipids included diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, one unidentified phospholipid and three unidentified lipids. The DNA G+C-content of strain SMB4T was 49.1-mol%. A blast sequence similarity search based on 16S rRNA gene sequence indicated that Salibacterium halochares , Salibacterium halotolerans and Salibacterium qingdaonense were the nearest phylogenetic neighbours, with a pair-wise sequence similarities of 98.4, 98.2 and 97.0-% respectively. Phylogenetic analysis showed that strain SMB4T was clustered with S. halochares and together clustered with S. halotolerans and S. qingdaonense. DNA-DNA hybridization of strain SMB4T with S. halochares DSM 21373T, S. halotolerans S7T and S. quigdaonense DSM 21621T showed a relatedness values of only 39.8, 26.3 and 42.8-%, respectively. Based on its phenotypic characteristics and on phylogenetic inference, strain SMB4T represents a novel species of the genus Salibacterium , for which the name Salibacterium nitratireducens sp. nov. is proposed. The type strain is SMB4T (=MTCC 12633T=KCTC 33876T=JCM 32187T)
    URI
    https://doi.org/10.1099/ijsem.0.003021
    http://drs.nio.org/drs/handle/2264/8072
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