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Taxonomy Citation ID Reference
9449     ( 1996 )

Characterization of lactobacilli by Southern-type hybridization with a Lactobacillus plantarum pyrDFE probe.

International journal of systematic bacteriology 46 (2)
PMID : 8934911 DOI  :   10.1099/00207713-46-2-588    
Abstract >>
Lactobacillus plantarum, Lactobacillus pentosus, and Lactobacillus paraplantarum (M.-C. Curk, J.-C. Hubert, and F. Bringel, Int. J. Syst. Bacteriol. 46:595-598, 1996) can hardly be distinguished on the basis of their phenotypes. Unlike L. plantarum and L. paraplantarum, L. pentosus ferments glycerol and xylose but not melezitose. We identified two L. pentosus strains (CNRZ 1538 and CNRZ 1544) which ferment glycerol and melezitose but not xylose. alpha-Methyl-D-mannoside was fermented by 66% of the L. plantarum strains tested but not by L. paraplantarum strains. In this paper we describe a simple method to identify L. plantarum, L. pentosus, and L. paraplantarum. This method is based on nonradioactive Southern-type hybridization between BglI DNA digests of the lactobacilli tested and a DNA probe (L. plantarum pyrDFE genes from strain CCM 1904). A total of 68 lactobacilli were classified into five groups on the basis of the bands detected. Two groups contained L. plantarum strains; one of these groups contained 31 strains, including the type strain, and was characterized by bands at 7, 4, and 1 kb, and the other group contained strain LP 85-2 and was characterized by bands at 5 and 1.1 kb. Only one band (a band at around 7 kb) was detected in the strains belonging to the L. pentosus group, and two bands (at 4 and 1 kb) were found in the strains belonging to the L. paraplantarum group. No hybridization was detected in the last group, which contained Lactobacillus casei, Lactobacillus coryniformis, Lactobacillus paracasei, Lactobacillus brevis, Lactobacillus delbrueckii, and Lactobacillus leichmannii strains.
KeywordMeSH Terms
5524 Bergey, D.H., Harrison, F.C., Breed, R.S., Hammer B.W., and Huntoon, F.M. Bergey's Manual of Determinative Bacteriology, 1st ed. (1923) The Williams and Wilkins Co., Baltimore, pp. 1-442. [No PubMed record available.]
2759 Skerman, V.B.D., McGowan, V., and Sneath, P.H.A. (editors). "Approved lists of bacterial names." Int. J. Syst. Bacteriol. (1980) 30:225-420. [No PubMed record available.]
2649 Swezey  JL, Nakamura  LK, Abbott  TP, Peterson  RE,     ( 2000 )

Lactobacillus arizonensis sp. nov., isolated from jojoba meal.

International journal of systematic and evolutionary microbiology 50 Pt 5 (N/A)
PMID : 11034490 DOI  :   10.1099/00207713-50-5-1803    
Abstract >>
Five strains of simmondsin-degrading, lactic-acid-producing bacteria were isolated from fermented jojoba meal. These isolates were facultatively anaerobic, gram-positive, non-motile, non-spore-forming, homofermentative, rod-shaped organisms. They grew singly and in short chains, produced lactic acid but no gas from glucose, and did not exhibit catalase activity. Growth occurred at 15 and 45 degrees C. All strains fermented cellobiose, D-fructose, D-galactose, D-glucose, lactose, maltose, D-mannitol, D-mannose, melibiose, D-ribose, salicin, D-sorbitol, sucrose and trehalose. Some strains fermented L-(-)-arabinose and L-rhamnose. D-Xylose was not fermented and starch was not hydrolysed. The mean G+C content of the DNA was 48 mol%. Phylogenetic analyses of 16S rDNA established that the isolates were members of the genus Lactobacillus. DNA reassociation of 45% or less was obtained between the new isolates and the reference strains of species with G+C contents of about 48 mol%. The isolates were differentiated from other homofermentative Lactobacillus spp. on the basis of 16S rDNA sequence divergence, DNA relatedness, stereoisomerism of the lactic acid produced, growth temperature and carbohydrate fermentation. The data support the conclusion that these organisms represent strains of a new species, for which the name Lactobacillus arizonensis is proposed. The type strain of L. arizonensis is NRRL B-14768T (= DSM 13273T).
KeywordMeSH Terms
9202 Orla-Jensen, S.: The lactic acid bacteria. Host & Son, Copenhagen (1919). pp. 1-118. [No PubMed record available.]
16138 Kostinek  M, Pukall  R, Rooney  AP, Schillinger  U, Hertel  C, Holzapfel  WH, Franz  CM,     ( 2005 )

Lactobacillus arizonensis is a later heterotypic synonym of Lactobacillus plantarum.

International journal of systematic and evolutionary microbiology 55 (Pt 6)
PMID : 16280514 DOI  :   10.1099/ijs.0.63880-0    
Abstract >>
The 'Lactobacillus plantarum group' encompasses the taxa Lactobacillus plantarum subsp. plantarum, Lactobacillus plantarum subsp. argentoratensis, Lactobacillus paraplantarum, Lactobacillus pentosus and Lactobacillus arizonensis. In this study, the phylogenetic position of L. arizonensis was examined using 16S rRNA gene-specific methodologies (16S rRNA sequencing and ribotyping) and genomic DNA-based investigations [repetitive extragenic palindromic DNA (rep)-PCR and DNA-DNA hybridization]. Our results show that the L. arizonensis type strain could not be distinguished from the type strain of L. plantarum or from various L. plantarum reference strains. Therefore, it is proposed that the species L. arizonensis should be reclassified as a heterotypic synonym of L. plantarum.
KeywordMeSH Terms
3794 Collins  MD, Ohlén  M, Falsen  E, Sjödén  B,     ( 1999 )

Phenotypic and phylogenetic characterization of a novel Lactobacillus species from human sources: description of Lactobacillus iners sp. nov.

International journal of systematic bacteriology 49 Pt 1 (N/A)
PMID : 10028266 DOI  :   10.1099/00207713-49-1-217    
Abstract >>
Eleven strains of a hitherto undescribed Gram-positive, catalase-negative, facultatively anaerobic rod-shaped bacterium from human sources and medical care products were characterized by phenotypic and molecular taxonomic methods. The phenotypic properties of the bacterium were consistent with its assignment to the genus Lactobacillus but it was readily distinguished from all currently described species of this genus by its biochemical characteristics and by SDS-PAGE analysis of its cellular proteins. Comparative 16S rRNA gene sequence analysis demonstrated that the unknown bacterium was a member of rRNA group I Lactobacillus which includes Lactobacillus delbrueckii, the type species of the genus, and close relatives. Lactobacillus gasseri and Lactobacillus johnsonii were the nearest phylogenetic relatives of the unknown bacterium, but 16S rRNA sequence divergence values of > 4% clearly showed that it represents a distinct species. Based on both phylogenetic and phenotypic evidence, it is proposed that the unknown bacterium should be classified in the genus Lactobacillus, as Lactobacillus iners sp. nov. The type strain of Lactobacillus iners is CCUG 28746T.
KeywordMeSH Terms
5829 Krasil'nikov, N.A.: Guide to the Bacteria and Actinomycetes [Opredelitelv Bakterii i Actinomicetov], (1949). Akad. Nauk SSSR, Moscow, pp. 1-830. [No PubMed record available.]

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