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Lactobacillus thermotolerans sp. nov., a novel thermotolerant species isolated from chicken faeces

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Title: Lactobacillus thermotolerans sp. nov., a novel thermotolerant species isolated from chicken faeces
Authors: Niamsup, Piyanuch Browse this author
Sujaya, I Nengah Browse this author
Tanaka, Michiko Browse this author
Sone, Teruo Browse this author →KAKEN DB
Hanada, Satoshi Browse this author
Kamagata, Yoichi Browse this author
Lumyong, Saisamorn Browse this author
Assavanig, Apinya Browse this author
Asano, Kozo Browse this author
Tomita, Fusao Browse this author
Yokota, Atsushi11 Browse this author →KAKEN DB
Authors(alt): 横田, 篤11
Issue Date: 2003
Publisher: International Union of Microbiological Societies
Journal Title: International Journal of Systematic and Evolutionary Microbiology
Volume: 53
Start Page: 263
End Page: 268
Publisher DOI: 10.1099/ijs.0.02347-0
PMID: 12656183
Abstract: Five strains of thermotolerant lactic acid bacteria (G 12,G22,G35T,G43 andG44) isolated from chicken faeces were characterized taxonomically. The strains were facultatively anaerobic, Grampositive, catalase-negative, non-motile, non-spore-forming rods. They were heterofermentative lactobacilli that produced DL-lactic acid. Growth of the strains occurred at 45℃ but not at 15℃. The optimum temperature for growth was 42℃, as determined from the specific growth rate. The highest permissive temperatures for growth were 50℃ for strainG 35T and 48℃ for the other four strains. DNA G+C content of the strains was between 49 and 51 mol%. Complex fatty acid patterns of the strains showed the presence of C14:0, C16:0, sometimes C18:0, C18:1 and C19:0 cyclo in the cell walls. Phylogenetic analysis of the 16S rRNA gene sequences of the five strains placed them in the Lactobacillus casei/Pediococcus group, with Lactobacillus fermentum as their closest relative (about 95% sequence similarity). DNA–DNA hybridization data indicated that the thermotolerant strains were not L. fermentum. Taken together, the findings of this study show that the five strains isolated from chicken faeces represent a novel species within the genus Lactobacillus, for which the name Lactobacillus thermotolerans is proposed (G 35T =DSM 14792T =JCM 11425T).
Type: article
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 横田 篤

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