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Int J Syst Evol Microbiol 59 (2009), 1054-1058; DOI  10.1099/ijs.0.65742-0
© 2009 International Union of Microbiological Societies

Re-examination of the taxonomic position of Bacillus silvestris Rheims et al. 1999 and proposal to transfer it to Solibacillus gen. nov. as Solibacillus silvestris comb. nov.

Srinivasan Krishnamurthi1, Tapan Chakrabarti1 and Erko Stackebrandt2

1 Microbial Type Culture Collection and Gene Bank (MTCC), Institute of Microbial Technology, Sector 39A, Chandigarh 160036, India
2 DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstr. 7b, D-38124 Braunschweig, Germany

Correspondence
Tapan Chakrabarti
tapan{at}imtech.res.in

Following the transfer of three of the six species enclosed in the original definition of rRNA group 2 of Bacillus to the genus Sporosarcina and two to Lysinibacillus, other species of this group, some of which were added later, still await taxonomic revision. In a recent publication, a set of ‘core’ characteristics was proposed for species to be included in the genus Bacillus (Kämpfer et al., 2006). Except for Bacillus silvestris, however, several or none of these properties are available for members of rRNA group 2. According to our analysis of data including the ‘core’ characteristics, Bacillus silvestris should not be a member of the genus Bacillus. We therefore propose the establishment of a new genus, Solibacillus gen. nov., and transfer Bacillus silvestris to this genus as Solibacillus silvestris comb. nov., with the type strain HR3-23T (=DSM 12223T=ATCC BAA-269T=CIP 106059T).

Abbreviations: AL, aminolipid; APL, aminophospholipid; DPG, diphosphatidylglycerol; PE, phosphatidylethanolamine; PG, phosphatidylglycerol; PS, phosphatidylserine; PGL, phosphoglycolipid; PL, phospholipid

Supplementary tables showing 16S rRNA gene sequence similarity between Bacillus silvestris and other closely related members of Bacillus rRNA group 2, and comparative fatty acid profiles of B. silvestris, Caryophanon latum and Bacillus subtilis are available with the online version of this paper.






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