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Olsenella intestinalis sp. nov., isolated from cow feces

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Guan, Yong; Li, Zhun; Kim, Min-Ju; Lee, Jae-Young; Choe, Hanna; Park, Seung-Hwan; Kang, Se Won; Lee, Jiyoung; Lee, Ju Huck; Kim, Hyeun Bum; Lee, Ju-Hoon; Kim, Eunju; Lee, Mi-Kyung

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Springer Verlag
Archives of Microbiology, Vol.204 No.7, p. 384
A Gram-stain-negative, anaerobic, non-motile, rod-shaped bacterium, designated as BGYT1(T), was isolated from the feces of a cow in Andong, Republic of Korea. It was studied using a polyphasic method to determine its taxonomic position. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain BGYT1(T) formed a lineage within the genus Olsenella and was most closely related to O. umbonate KCTC 15140(T) (98.2%). The complete genome sequence of strain BGYT1(T) was 2,476,083 bp long with a G + C content of 66.9 mol% and contained 1835 genes and 8 contigs. The N50 value was 604,117 bp. There were 50 tRNAs, 6 rRNAs (5S, 16S, 23S), 1778 CDSs and 2 BGCs and 1 tmRNA. The values for ANI (76.8%), AAI (67.3%), and dDDH (22.2%) compared to the closest related species were all below the threshold for bacterial species delineation. In addition, genes encoding the cell wall degrading enzymes such as chitinases, beta-1,3 glucanases, and proteases were also detected. The strain was able to grow at pH 6.0-8.0 (optimum, pH 7.0), in the presence of 0.5-1.5% NaCl (optimum, 0.5%, w/v) and at the temperature range of 35-40 degrees C (optimum, 35 degrees C). The predominant fatty acids were C-16:0 DMA (20.2%), C-16:0 (20.2%), C-18:0 (10.5%) and C-18:1 cis 9 (17.0%). The polar lipids consisted of an unidentified phospholipid, four unidentified glycolipids and three unidentified lipids. Based on its phenotypic analyses, phylogenetic and physiological characteristics, strain BGYT1(T) represented a novel species within the genus Olsenella, for which the name Olsenella intestinalis sp. nov. is proposed. The type strain is BGYT1(T) (= KCTC 25379(T) = GDMCC 1.3011(T)).
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