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  • Title: Salisediminibacterium haloalkalitolerans sp. nov., isolated from Lonar soda lake, India, and a proposal for reclassification of Bacillus locisalis as Salisediminibacterium locisalis comb. nov., and the emended description of the genus Salisediminibacterium and of the species Salisediminibacterium halotolerans.
    Author: Sultanpuram VR, Mothe T, Mohammed F.
    Journal: Arch Microbiol; 2015 May; 197(4):553-60. PubMed ID: 25638045.
    Abstract:
    A Gram stain-positive, rod-shaped, non-motile, orange-pigmented and non-endospore-forming novel bacterial strain 10nlg(T) was isolated from Lonar soda lake in India. Based on the 16S rRNA gene sequence analysis, it was belonged to the genus Salisediminibacterium and was most closely related to Salisediminibacterium halotolerans CGMCC 1.7654(T) (99.9 %), Bacillus locisalis CGMCC 1.6286(T) (99.1 %) and other members in the Bacillaceae (<93.6 %). Further, DNA-DNA hybridization results demonstrated that strain 10nlg(T) was distantly (<70 %) related to S. halotolerans halo-2(T) (59.6 %) and B. locisalis CGMCC 1.6286(T) (53.2 %). Strain 10nlg(T) was catalase positive and oxidase negative. The cell wall of the strain 10nlg(T) contains meso-diaminopimelic acid as the diagnostic amino acid. Polar lipids include diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, five phospholipids and two unknown lipids. The predominant isoprenoid quinone was MK-7. Anteiso-C15:0 (32.6 %) was the predominant fatty acid, and significant proportions of iso-C15:0 (9.3 %), anteiso-C17:0 (8.3 %), C16:0 (4.3 %) were also detected in the strain 10nlg(T). The DNA G+C content of the strain 10nlg(T) was 45.6 mol %. The results of phylogenetic, physiological and biochemical tests allowed a distinct differentiation of strain 10nlg(T) not only from S. halotolerans halo-2(T), the only member of the genus Salisediminibacterium, but also from the related Bacillaceae members. Strain 10nlg(T) represents a novel species of the genus Salisediminibacterium for which the name Salisediminibacterium haloalkalitolerans sp. nov. is proposed. The type strain is 10nlg(T) (=KCTC 33414(T) = CGMCC 1.12818(T)). B. locisalis CGMCC 1.6286(T) also represents a member of the genus Salisediminibacterium for which the name Salisediminibacterium locisalis CG1(T) is proposed. The type strain is CG1(T) = (CCM 7370(T) = CECT 7152(T) = CGMCC 1.6286(T) = DSM 18085(T)). In accordance with the new polar lipid data collected in this study, emended descriptions of the genus Salisediminibacterium and the species S. halotolerans halo-2(T) are also provided.
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