1887

Abstract

A novel strain, designated NIBRBAC000499792, was isolated from a soil sample collected at Jukgye, Dongnam, Cheonan, Republic of Korea. Cells were Gram-positive, non-motile, non-spore-forming, rod-shaped, oxidase-negative and catalase-negative. Colonies grown on de Man, Rogosa and Sharpe agar were white, circular, raised and entire. Analysis of the 16S rRNA gene sequence analysis revealed that strain NIBRBAC000499792 belongs to the genus Lactobacillus (family Lactobacillaceae ) and is most closely related to Lactobacillus nodensis DSM 19682 (96.1 % similarity) and Lactobacillus tucceti KCTC 21005 (96.7 %). The results of DNA–DNA hybridization experiments demonstrated that strain NIBRBAC000499792 represents a novel species. Major fatty acids are C18 : 1ω9c, C16 : 0 and unidentified 18.846 and/or C19 : 1ω6c and/or C19 : 0cyclo. The predominant respiratory quinones are menaquinone-8 and menaquinone-9. The major polar lipids are phosphatidylglycerol and diphosphatidylglycerol. The minor polar lipids are one unidentified aminophospholipid, one unidentified phospholipid, and four unidentified lipids. Next-generation sequencing analysis of strain NIBRBAC000499792 indicated that the total genome size was 1 548 794 bp with a G+C content of 33.1 mol%, 1586 coding sequences, 50 tRNAs and nine rRNAs. The most closely related genomes belonged to Lactobacillus species. Most metabolic pathways were related to carbon metabolism and carbon fixation. Based on this polyphasic analysis, strain NIBRBAC000499792 represents a novel species of the genus Lactobacillus , for which the name Lactobacillus terrae sp. nov. is proposed, with the type strain NIBRBAC000499792 (=KCTC 21093=JCM 32269).

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2018-07-16
2019-10-20
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