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Bacillus bogoriensis sp. nov., a novel alkaliphilic, halotolerant bacterium isolated from a Kenyan soda lake

Virginia A. Vargas^1,2, Osvaldo D. Delgado^1,, Rajni Hatti-Kaul¹ and Bo Mattiasson¹

¹ Department of Biotechnology, Center for Chemistry and Chemical Engineering, Lund University, PO Box 124, SE-22 100 Lund, Sweden
² Centro de Biotecnología, Facultad de Ciencias y Tecnología, Universidad Mayor de San Simón, Cochabamba, Bolivia

Correspondence
Rajni Hatti-Kaul
Rajni.Hatti-Kaul{at}biotek.lu.se

Strain LBB3^T isolated from Bogoria soda lake in Kenya is an alkaliphilic, Gram-positive, strictly aerobic, non-motile, spore-forming bacterium. It was identified as a member of the genus Bacillus on the basis of phenotypic and phylogenetic analyses. The organism grows optimally at 37 °C and pH 10. The G+C content of the genomic DNA is 37·5 mol%. 16S rRNA gene sequence analysis showed 95 and 96 % sequence similarity with Bacillus pseudofirmus (DSM 8715^T) and Bacillus alcalophilus (DSM 485^T), respectively. Furthermore, DNA–DNA hybridization against these two Bacillus species showed 39·0 and 55·5 % similarity, respectively. Based on our observations, strain LBB3^T is proposed to represent a novel species of the genus Bacillus, for which the name Bacillus bogoriensis sp. nov. is proposed. The type strain of B. bogoriensis is LBB3^T (=ATCC BAA-922^T=LMG 22234^T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of LBB3^T is AY376312.

A phylogenetic tree and electron micrographs are available as supplementary material in IJSEM Online.

Present address: PROIMI – CONICET, Av. Belgrano y Pasaje Caseros, 4000 San Miguel de Tucumán, Argentina.

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