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Lactobacillus caviae sp. nov., an obligately heterofermentative bacterium isolated from the oral cavity of a guinea pig (Cavia aperea f. porcellus)

J. Killer, R. Pechar, P. Švec, H. Salmonová, R. Švejstil, M. Geigerová, V. Rada, E. Vlková, C. Mekadim,

. 2017 ; 67 (8) : 2903-2909. [pub] 20170818

Jazyk angličtina Země Anglie, Velká Británie

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/bmc17030644

A Gram-stain-positive, facultatively anaerobic, and catalase- and oxidase-negative bacterial strain designated MOZM2T, having 98.4 % 16S rRNA gene sequence identity with Lactobacillus reuteri DSM 20016T, was isolated from a swab of the oral cavity of a home-bred guinea pig. Comparative analyses based on the hsp60, pheS and tuf genes confirmed L. reuteri as its closest relative species, with calculated sequence similarities of 92.8, 88.8 and 96.9 %, respectively. DNA-DNA hybridisation revealed a 42 % degree of genetic similarity between the novel strain and L. reuteri DSM 20016T. Strain MOZM2T degrades carbohydrates via the 6-phosphogluconate/phosphoketolase pathway, evidenced by its production of gas from glucose and the end products of hexose catabolism. Comparative analysis of the cellular fatty acid profiles determined significant differences between MOZM2T and L. reuteri DSM 20016T in their proportions of C8 : 0, C14 : 1, C17 : 0, C18 : 2ω6t and C20 : 0 fatty acids. Results of genotypic analyses also demonstrated differences between these two strains. They also differed in DNA G+C content, and some biochemical and physiological characteristics. We therefore believe that the examined bacterial isolate should be considered as a new taxon within the group of obligately heterofermentative lactobacilli. The species name Lactobacillus caviae sp. nov. is proposed, of which the type strain is MOZM2T (=CCM 8609T=DSM 100239T=LMG 28780T).

Citace poskytuje Crossref.org

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$a Killer, Jiri $u Department of Microbiology, Nutrition and Dietetics, Czech University of Life Sciences, Faculty of Agrobiology, Food and Natural Resources, Kamýcká 129, Prague 6 - Suchdol, 165 00, Czech Republic 1​Institute of Animal Physiology and Genetics v.v.i., Czech Academy of Sciences, Vídeňská 1083, Prague 4 - Krč, 142 20, Czech Republic.
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$a A Gram-stain-positive, facultatively anaerobic, and catalase- and oxidase-negative bacterial strain designated MOZM2T, having 98.4 % 16S rRNA gene sequence identity with Lactobacillus reuteri DSM 20016T, was isolated from a swab of the oral cavity of a home-bred guinea pig. Comparative analyses based on the hsp60, pheS and tuf genes confirmed L. reuteri as its closest relative species, with calculated sequence similarities of 92.8, 88.8 and 96.9 %, respectively. DNA-DNA hybridisation revealed a 42 % degree of genetic similarity between the novel strain and L. reuteri DSM 20016T. Strain MOZM2T degrades carbohydrates via the 6-phosphogluconate/phosphoketolase pathway, evidenced by its production of gas from glucose and the end products of hexose catabolism. Comparative analysis of the cellular fatty acid profiles determined significant differences between MOZM2T and L. reuteri DSM 20016T in their proportions of C8 : 0, C14 : 1, C17 : 0, C18 : 2ω6t and C20 : 0 fatty acids. Results of genotypic analyses also demonstrated differences between these two strains. They also differed in DNA G+C content, and some biochemical and physiological characteristics. We therefore believe that the examined bacterial isolate should be considered as a new taxon within the group of obligately heterofermentative lactobacilli. The species name Lactobacillus caviae sp. nov. is proposed, of which the type strain is MOZM2T (=CCM 8609T=DSM 100239T=LMG 28780T).
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