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Streptococcus shenyangsis sp. nov., a New Species Isolated from the Oropharynx of a Healthy Child from Shenyang China

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Abstract

A Gram-positive, catalase-negative, coccus-shaped, chain-forming organism isolated from the oropharynx of a healthy child in Shenyang, China, was subjected to phenotypic and molecular taxonomic analyses. 16S rRNA sequence analysis indicated that this bacterium represents a new member of the genus Streptococcus and is closely related to Streptococcus oralis subsp. dentisani DSM 27088. According to DNA-DNA hybridization analysis, strain D19T was less than 70% similar to other strains with close genetic relationships. Fatty acid analysis, physiological, and biochemical tests showed that strain D19T was different from the published Streptococcus species. The genome of strain D19T is 2,023,003 bp long with a GC content of 39.9 mol%. It contains 1889 protein-coding genes and 50 RNA genes. These results show that Streptococcus shenyangsis sp. nov. strain D19T is a new species.

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Funding

This work was supported by the Natural Science Foundation of Liaoning (Grant No. 2017225076) and Shenyang Science and Technology Key Project (Grant No. 18-400409).

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Authors and Affiliations

  1. Key Lab of Environmental Pollution and Microecology of Liaoning Province, Shenyang Medical College, No. 146, Huanghe North Street, Shenyang, People’s Republic of China

    Defeng Liu, Chunling Xiao, Xinming Li, Ye Sun, He Qi & Yang Zou

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  1. Defeng Liu
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  2. Chunling Xiao
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  3. Xinming Li
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Correspondence to Chunling Xiao.

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Liu, D., Xiao, C., Li, X. et al. Streptococcus shenyangsis sp. nov., a New Species Isolated from the Oropharynx of a Healthy Child from Shenyang China. Curr Microbiol 78, 2821–2827 (2021). https://doi.org/10.1007/s00284-021-02500-1

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