PROPOSAL TO ELEVATE SUBSPECIES OF STREPTOCOCCUS-MUTANS TO SPECIES STATUS, BASED ON THEIR MOLECULAR COMPOSITION
PROPOSAL TO ELEVATE SUBSPECIES OF STREPTOCOCCUS-MUTANS TO SPECIES STATUS, BASED ON THEIR MOLECULAR COMPOSITION
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DOI：
10.1099/00207713-27-1-26
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发表时间：
1977-01-01
期刊：
影响因子：
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通讯作者：
COYKENDALL, AL
中科院分区：
文献类型：
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作者：
COYKENDALL, AL
建议赋予被认为是变形链球菌亚种的遗传上不同的链球菌种等级：变形链球菌SSP。Rattus Coykendall、变形链球菌SSP.Crictus coykendall和变形链球菌SSP.天牛Coykendall变形链球菌被定义为排除DNA鸟嘌呤和胞嘧啶含量略有不同于36-38mol%和/或与模式菌株没有DNA碱基序列同源性的表型相似细菌。与变形链球菌相似但分子结构完全不同的链球菌在这里被认为包括4个新种：S.rattus(Coykendall)comb.Nov.、crictus(Coykendall)comb.Nov.、远缘链霉菌S.sobrinus(Coykendall)comb.11月和费氏链霉菌S.Ferus sp.11月NCTC 10449为变形链球菌新模式菌株。模式菌株分别为FA1(=atcc 19645)、hs6(=atcc 19642)、s1和8s1。简单的生化测试可用于鉴定所有5种细菌中的大多数菌株。血清学方法能够区分大多数人类分离株。
It is proposed to confer species rank to the genetically distinct streptococci that were considered subspecies of S. mutans Clarke: S. mutans ssp. rattus Coykendall, S. mutans ssp. cricetus Coykendall and S. mutans ssp. sobrinus Coykendall. S. mutans is defined to exclude phenotypically similar bacteria that have DNA guanine plus cytosine contents appreciably different from 36-38 mol% and/or that do not demonstrate DNA base-sequence homology with the type strain. Streptococci that resemble S. mutans but that are quite disparate in molecular constitution are here regarded as comprising 4 new species: S. rattus (Coykendall) comb. nov., S. cricetus (Coykendall) comb. nov., S. sobrinus (Coykendall) comb. nov. and S. ferus sp. nov. NCTC 10449 is here designated as the neotype strain of S. mutans. The type strains of S. rattus, S. cricetus, S. sobrinus and S. ferus are FA1 (= ATCC 19645), HS6 (= ATCC 19642), SL1 and 8S1, respectively. Simple biochemical tests serve to identify most strains of all 5 spp. Serological procedures are capable of differentiating most human isolates.