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Curr Microbiol. 2013 Dec;67(6):718-24. doi: 10.1007/s00284-013-0426-2. Epub 2013 Jul 30.

Bacillus borbori sp. Nov., isolated from an electrochemically active biofilm.

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Guangdong Institute of Eco-Environmental and Soil Sciences, Guangzhou, 510650, People's Republic of China.


A Gram-positive, facultative anaerobic, motile, endospore-forming rod strain, designated DX-4(T), was isolated from an electrochemically active biofilm. Growth occurred at 30-65 °C (optimum 55 °C), at pH 6.0-8.5 (optimum pH 7.0-7.5) and with <6 % (w/v) NaCl. Cells were catalase- and oxidase-positive. The main respiratory quinone was MK-7, the predominant polar lipids were diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylinositol mannoside, and unidentified aminophospholipid, the DNA G+C content was 38.6 mol% and the major fatty acids (>5 %) were iso-C15:0 (38.9 %), iso-C17:0 (30.5 %), iso-C16:0 (5.6 %), and anteiso-C17:0 (5.2 %). The phylogenetic analysis based on 16S rRNA gene sequence comparisons revealed that strain DX-4(T) is a member of the genus Bacillus. The results of phenotypic, chemotaxonomic, and genotypic analyses clearly indicated that strain DX-4(T) represents a novel species, for which the name Bacillus borbori sp. nov. is proposed. The type strain is DX-4(T) (= CCTCC AB2012196(T) = KCTC 33103(T)).

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