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1 Institut für Mikrobiologie und Genetik, Universität Wien, A-1030 Wien, Austria
2 Institut für Bakteriologie, Mykologie und Hygiene, Veterinärmedizinische Universität, A-1210 Wien, Austria
3 Institut für Angewandte Mikrobiologie, Justus-Liebig-Universität, D-35392 Giessen, Germany
Correspondence
Hans-Jürgen Busse
Hans-Juergen.Busse{at}vu-wien.ac.at
In a project concerning bacterial colonization of experimental wall paintings, a large number of isolates have been acquired with high similarities in their whole-cell protein patterns obtained after SDS-PAGE. Of this group, four strains, designated V2-BIII-A2T, V2-BI-A9, V2-BI-04 and V2-BII-A8, were chosen for further characterization. Banding patterns obtained after ERIC-PCR were barely distinguishable among these four strains, indicating their affiliation within a single species. The isolates also displayed nearly identical biochemical and physiological features. The chemotaxonomic characteristics, including polar lipids, quinone systems, cell-wall diamino acid composition and fatty acid profiles, were in good agreement with those of numerous previously described Bacillus species. 16S rDNA analysis of strain V2-BIII-A2T showed that this bacterium belongs to the genus Bacillus, with highest sequence similarities to Bacillus megaterium (94·6 %), Bacillus flexus (94·4 %) and the alkaliphilic Bacillus cohnii (94·2 %). Based on almost identical biochemical, physiological and chemotaxonomic traits, ERIC-PCR-generated genomic fingerprints and comparative 16S rDNA sequence analysis, it is demonstrated that the four isolates represent a novel species of the genus Bacillus, for which the name Bacillus barbaricus sp. nov. is proposed. The type strain is V2-BIII-A2T (=CCM 4982T=DSM 14730T).
The GenBank/EMBL/DDBJ accession number for the 16S rDNA sequence of B. barbaricus V2-BIII-A2T is AJ422145.
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