Streptococcus koreensis sp. nov., Isolated from Human Subgingival Dental Plaque of Periodontitis Lesion.

Abstract:

:A novel facultative anaerobic, Gram-stain-positive coccus, strain JS71T, was isolated from the human subgingival dental plaque of a periodontitis lesion. Phylogenetic analysis based on the 16S ribosomal RNA gene (16S rDNA) revealed that the strain belonged to the genus Streptococcus. The 16S rDNA sequence had high similarity with Streptococcus rubneri DSM 26920T (98.6%), Streptococcus parasanguinis ATCC 15912T (98.5%), and Streptococcus australis CCUG 45919T (98.3%). The genome of strain JS71T was 2,009,592 bp in length. The DNA G+C content of the strain was 42.1 mol%. Average nucleotide identity values between strain JS71T and S. rubneri DSM 26920T, S. parasanguinis ATCC 15912T, and S. australis CCUG 45919T were 88.9%, 80.8%, and 92.4%, respectively. Genome-to-genome distance values between strain JS71TS. rubneri DSM 26920T, S. parasanguinis ATCC 15912T, and S. australis CCUG 45919T were 36.5% (34-39%), 26.3% (23.9-28.7%), and 48.0% (45.4-50.6%), respectively. The major fatty acids of the strain were C16:0 (39.7%), C18:1 ω6c/C18:1 ω7c (15.5%), and C18:0 (10.4%). Based on these results, strain JS71T (= KCOM 2890T = JCM 33454T) should be a novel species of the genus Streptococcus, for which the name Streptococcus koreensis sp. nov. is proposed.

journal_name

Curr Microbiol

journal_title

Current microbiology

authors

Lim YK,Park SN,Shin JH,Ji S,Jo E,Chang YH,Shin Y,Paek J,Kim H,Kook JK

doi

10.1007/s00284-019-01778-6

subject

Has Abstract

pub_date

2019-12-01 00:00:00

pages

1531-1536

issue

12

eissn

0343-8651

issn

1432-0991

pii

10.1007/s00284-019-01778-6

journal_volume

76

pub_type

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