Whiley R A, Fraser H Y, Douglas C W, Hardie J M, Williams A M, Collins M D
Department of Oral Microbiology, London Hospital Medical College, U.K.
FEMS Microbiol Lett. 1990 Mar 1;56(1-2):115-21. doi: 10.1111/j.1574-6968.1990.tb04133.x.
Molecular taxonomic studies were performed on ten strains of an unusual 'viridans streptococcus' that were originally isolated from human throats, blood and urine. On the basis of DNA-DNA hybridization studies the strains formed a single homology group distinct from all recognized species of oral and viridans streptococci. 16S ribosomal RNA reverse transcriptase sequence studies confirmed the genealogical distinctiveness of the human strains. The results of the present study clearly demonstrate that the human strains represent a new species of the viridans group for which the name Streptococcus parasanguis sp. nov. is proposed. The type strain is ATCC 15912.
对最初从人类咽喉、血液和尿液中分离出的10株异常“草绿色链球菌”进行了分子分类学研究。基于DNA-DNA杂交研究，这些菌株形成了一个单一的同源群，与所有已确认的口腔和草绿色链球菌物种不同。16S核糖体RNA逆转录酶序列研究证实了这些人类菌株在谱系上的独特性。本研究结果清楚地表明，这些人类菌株代表了草绿色链球菌属的一个新物种，为此提出了副血链球菌（Streptococcus parasanguis sp. nov.）这一名称。模式菌株为ATCC 15912。
