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Title 

Lactobacillus porci sp. nov., isolated from small intestine of a swine

Authors 

Ji Sun KimHanna ChoeKyung Mo KimYu Ri LeeMoon Soo RheeDoo-Sang Park

Publisher 

Society for General Microbiology

Issue Date 

2018

Citation 

International Journal of Systematic and Evolutionary Microbiology

Keywords 

Lactobacillus porci sp. nov.gastrointestinal tractsmall intestineswine

Abstract 

A facultatively anaerobic, Gram-stain-positive, catalase-negative, rod-shaped lactic acid bacterium, designated SG816T, was isolated from small intestine of a swine. Optimal growth occurred at 37?°C and pH 7.0. Furthermore, growth occurred in NaCl up to 0.5?% (w/v) but not at levels of salinity higher than 1?%. Comparative 16S rRNA gene sequencing and the matrix-associated laser desorption/ionization-time-of-flight mass spectometry profiling showed that strain SG816T was closely related to Lactobacillus delbrueckiisubsp. bulgaricus KCTC 3635T (95.9?%) and Lactobacillus delbrueckiisubsp. indicus JCM 15610T (95.9?%), followed by other Lactobacillus delbrueckii subspecies (95.9-95.7?%) and Lactobacillus equicursoris DSM 19284T (95.6?%). A comparison of two housekeeping genes, RNA polymerase alpha subunit (rpoA) and phenylalanyl-tRNA synthase alpha subunit (pheS), revealed that strain SG816T formed a separate branch within the clade of the genus Lactobacillus. The DNA G+C?content level of the strain SG816T was 51.5?mol%. The strain was homofermentative and produced d-lactic acid from glucose fermentation. The major cellular fatty acids (>10?%) of the isolate were C18?:?1ω9c and C16?:?0. The peptidoglycan type was A4α l-Lys-d-Asp. On the basis of distinct phenotypic and phylogenetic properties, strain SG816T represents a novel species of the genus Lactobacillus, for which the name Lactobacillus porci sp. nov. is proposed. The type strain is SG816T (=KCTC 21090T=NBRC 112917T).

ISSN 

1466-5026

Link 

http://dx.doi.org/10.1099/ijsem.0.002949

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2019-05-02


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