Kawamura Y, Hou X G, Todome Y, Sultana F, Hirose K, Shu S E, Ezaki T, Ohkuni H
Department of Microbiology, Gifu University School of Medicine, Japan.
Int J Syst Bacteriol. 1998 Jul;48 Pt 3:921-7. doi: 10.1099/00207713-48-3-921.
Taxonomic studies were performed on eight strains of alpha-haemolytic streptococci that showed very low DNA-DNA hybridization similarity values with all established members of the mitis group of the genus Streptococcus. These strains were isolated from the tooth surface and pharynx of humans. 16S rRNA gene sequence analysis showed that these strains belonged to the mitis group, but that they fell into two new branches. DNA-DNA hybridization demonstrated two new similarity groups. From the results of the present study, the names Streptococcus peroris sp. nov. and Streptococcus infantis sp. nov. are proposed for these new groups. The type strains are O-66T (= GTC 848T = JCM 10158T) and O-122T (= GTC 849T = JCM 10157T), respectively.
对八株α-溶血性链球菌进行了分类学研究，这些菌株与链球菌属缓症链球菌群的所有已确定成员显示出非常低的DNA-DNA杂交相似性值。这些菌株是从人类牙齿表面和咽部分离出来的。16S rRNA基因序列分析表明，这些菌株属于缓症链球菌群，但它们分为两个新分支。DNA-DNA杂交显示出两个新的相似性组。根据本研究结果，为这些新组提出了新种名称口腔链球菌（Streptococcus peroris sp. nov.）和婴儿链球菌（Streptococcus infantis sp. nov.）。模式菌株分别为O-66T（=GTC 848T =JCM 10158T）和O-122T（=GTC 849T =JCM 10157T）。
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