title: Reclassification of Lactobacillus brevis strains LMG 11494 and LMG 11984 as Lactobacillus parabrevis sp. nov.
abstract: A polyphasic study revealed taxonomic heterogeneity among reference strains of the species Lactobacillus brevis. Representative strains of L. brevis and related taxa were investigated by partial sequence analysis of the housekeeping gene encoding the alpha-subunit of phenylalanyl-tRNA synthase (pheS). Species-specific clusters were delineated for all taxa studied except for two L. brevis strains, LMG 11494 and LMG 11984, respectively isolated from cheese and wheat, which occupied a distinct position. Their phylogenetic affiliation was determined using 16S rRNA gene sequence analysis and it was found that both strains (with 99.9 % gene sequence similarity between them) belonged to the Lactobacillus buchneri group, with nearest neighbours Lactobacillus hammesii and L. brevis (gene sequence similarities of 99.2 and 98.1 %, respectively). Further genotypic and phenotypic studies, including fluorescent amplified fragment length polymorphism, DNA-DNA hybridization and DNA G+C content, clearly demonstrated that the two strains represent a single novel taxon for which the name Lactobacillus parabrevis sp. nov. is proposed (type strain LMG 11984(T)=ATCC 53295(T)).
authors.affiliation: BCCM/LMG Bacteria Collection, Faculty of Sciences, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium.
authors.forename: Marc
authors.initials: M
authors.lastname: Vancanneyt
authors.affiliation: Laboratory of Microbiology, Faculty of Sciences, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium.|BCCM/LMG Bacteria Collection, Faculty of Sciences, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium.
authors.forename: Sabri M
authors.initials: SM
authors.lastname: Naser
authors.affiliation: BCCM/LMG Bacteria Collection, Faculty of Sciences, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium.
authors.forename: Katrien
authors.initials: K
authors.lastname: Engelbeen
authors.affiliation: BCCM/LMG Bacteria Collection, Faculty of Sciences, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium.
authors.forename: Marjan
authors.initials: M
authors.lastname: De Wachter
authors.affiliation: Research Group of Industrial Microbiology, Fermentation Technology and Downstream Processing (IMDO), Department of Applied Biological Sciences, Vrije Universiteit Brussel (VUB), Pleinlaan 2, B-1050 Brussels, Belgium.
authors.forename: Roel
authors.initials: R
authors.lastname: Van der Meulen
authors.affiliation: BCCM/LMG Bacteria Collection, Faculty of Sciences, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium.
authors.forename: Ilse
authors.initials: I
authors.lastname: Cleenwerck
authors.affiliation: BCCM/LMG Bacteria Collection, Faculty of Sciences, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium.
authors.forename: Bart
authors.initials: B
authors.lastname: Hoste
authors.affiliation: Research Group of Industrial Microbiology, Fermentation Technology and Downstream Processing (IMDO), Department of Applied Biological Sciences, Vrije Universiteit Brussel (VUB), Pleinlaan 2, B-1050 Brussels, Belgium.
authors.forename: Luc
authors.initials: L
authors.lastname: De Vuyst
authors.affiliation: Laboratory of Microbiology, Faculty of Sciences, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium.|BCCM/LMG Bacteria Collection, Faculty of Sciences, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium.
authors.forename: Jean
authors.initials: J
authors.lastname: Swings
mesh_terms: D001426:Bacterial Proteins / Q000235:genetics; D001482:Base Composition; D016000:Cluster Analysis; D016172:DNA Fingerprinting; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D005516:Food Microbiology; D020459:Genes, rRNA; D007778:Lactobacillus / Q000145:classification* / Q000235:genetics; D052196:Levilactobacillus brevis / Q000145:classification* / Q000235:genetics; D008969:Molecular Sequence Data; D009693:Nucleic Acid Hybridization; D010652:Phenylalanine-tRNA Ligase / Q000235:genetics*; D010802:Phylogeny; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D012689:Sequence Homology, Nucleic Acid
chemical_list: D001426:Bacterial Proteins; D004269:DNA, Bacterial; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S; D010652:Phenylalanine-tRNA Ligase