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Lactobacillus durianis Leisner et al. 2002 is a later heterotypic synonym of Lactobacillus vaccinostercus Kozaki and Okada 1983

Franco Dellaglio^1,, Marc Vancanneyt^2,, Akihito Endo^3,, Peter Vandamme⁴, Giovanna E. Felis^1,, Anna Castioni¹, Junji Fujimoto⁵, Koichi Watanabe⁵ and Sanae Okada³

¹ Dipartimento Scientifico e Tecnologico, Università degli Studi di Verona, Strada le Grazie, 15, I-37134 Verona, Italy
² BCCM/LMG Bacteria Collection, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium
³ NODAI Culture Collection Center, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya, Tokyo 156-8502, Japan
⁴ Laboratory of Microbiology, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium
⁵ Yakult Central Institute for Microbiological Research, 1796 Yaho, Kunitachi, Tokyo 186-8650, Japan

Correspondence
Franco Dellaglio
franco.dellaglio{at}univr.it

The taxonomic status of the species Lactobacillus durianis and Lactobacillus vaccinostercus is briefly summarized and experimental evidence concerning their similarity is presented. Highly similar 16S rRNA gene sequences (99.8 % similarity over 1523 bp), partial recA gene sequences (99.5 % similarity over 600 bp) and partial hsp60 gene sequences (99.1 % similarity over 924 bp) suggest that the two species are closely related. Moreover, a high DNA–DNA binding level (87 %) and similar genomic DNA G+C contents (41–44 mol% for both species) as well as similar biochemical characteristics support the evidence that they constitute a single species. Consequently, according to Rules 38 and 42 of the Bacteriological Code, the name Lactobacillus vaccinostercus, the oldest legitimate name, must be maintained and the name Lactobacillus durianis should be considered a later heterotypic synonym.

These authors contributed equally to this work.

Present address: Dipartimento di Scienze Biomediche, Sezione di Microbiologia Sperimentale Clinica, Viale San Pietro 43/b, I-07100 Sassari, Italy.

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