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Int J Syst Evol Microbiol 56 (2006), 587-591; DOI  10.1099/ijs.0.63619-0
© 2006 International Union of Microbiological Societies

Lactobacillus nantensis sp. nov., isolated from French wheat sourdough

Rosica Valcheva1,2, Mounir F. Ferchichi1, Maher Korakli3, Iskra Ivanova2, Michael G. Gänzle3, Rudi F. Vogel3, Hervé Prévost1, Bernard Onno1 and Xavier Dousset1

1 Laboratoire de Microbiologie Alimentaire et Industrielle (LMAI), Unité de Recherche QM2A, ENITIAA, rue de la Géraudière, BP 82225, 44322 Nantes Cedex 3, France
2 Department of Microbiology, Faculty of Biology, University Sofia, 8 Dragan Tzankov Street, 1162 Sofia, Bulgaria
3 Lehrstuhl für Technische Mikrobiologie, Technische Universität München, Weihenstephaner Steig 16, 85350 Freising, Germany

Correspondence
Maher Korakli
maher.korakli{at}wzw.tum.de

A polyphasic taxonomic study of the bacterial flora isolated from traditional French wheat sourdough, using phenotypic characterization and phylogenetic as well as genetic methods, revealed a consistent group of isolates that could not be assigned to any recognized species. These results were confirmed by randomly amplified polymorphic DNA and amplified fragment length polymorphism fingerprinting analyses. Cells were Gram-positive, homofermentative rods. Comparative 16S rRNA gene sequence analysis of the representative strain LP33T indicated that these strains belong to the genus Lactobacillus and that they formed a branch distinct from their closest relatives Lactobacillus farciminis, Lactobacillus alimentarius, Lactobacillus paralimentarius and Lactobacillus mindensis. DNA–DNA reassociation experiments with the three phylogenetically closest Lactobacillus species confirmed that LP33T (=DSM 16982T=CIP 108546T=TMW 1.1265T) represents the type strain of a novel species, for which the name Lactobacillus nantensis sp. nov. is proposed.


Abbreviations: AFLP, amplified fragment length polymorphism; LAB, lactic acid bacteria; RAPD, randomly amplified polymorphic DNA; RFLP, restriction fragment length polymorphism

Published online ahead of print on 4 November 2005 as DOI 10.1099/ijs.0.63619-0.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain LP33T is AY690834.

RAPD and AFLP patterns of Lactobacillus nantensis LP33T and selected reference sourdough lactobacilli are shown in supplementary figures available in IJSEM Online.




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