Cottew G S, Breard A, DaMassa A J, Ernø H, Leach R H, Lefevre P C, Rodwell A W, Smith G R
CSIRO Division of Animal Health, Animal Health Research Laboratory, Victoria, Australia.
Isr J Med Sci. 1987 Jun;23(6):632-5.
Some of the mycoplasmas found in diseases of ruminants, Mycoplasma capricolum, M. mycoides subsp. capri (PG3), bovine group 7 (PG50), strain F38 and strain Y goat show various degrees of relationship to M. mycoides subsp. mycoides (PG1) and to one another, such that they are referred to as the M. mycoides cluster. Studies using serology, DNA homology, isoenzyme analysis and two-dimensional polyacrylamide gel electrophoresis (2-D PAGE) of proteins have been carried out on the type and reference strains of these organisms and some representative strains in an effort to resolve this cluster into well-defined taxa. An ad hoc committee set up by the Subcommittee on the Taxonomy of the Mollicutes examined the known data, but found that it led to conflicting opinions on the classification of the unspeciated strains, partly because of the lack of guidelines on the relative weight to be given to each criterion, and partly because insufficient strains of each member of the cluster had been examined. Although classifications were proposed, total agreement was not achieved on any one proposal, and the committee believes that decisions on the taxonomy would have to await the results of repeat tests, in which several representative strains of each of the six groups would be included with the type strain.
在反刍动物疾病中发现的一些支原体，如山羊支原体、丝状支原体山羊亚种（PG3）、牛7群（PG50）、F38菌株和Y山羊菌株，与丝状支原体丝状亚种（PG1）以及它们彼此之间都呈现出不同程度的亲缘关系，因此它们被归为丝状支原体菌群。已对这些支原体的模式菌株、参考菌株以及一些代表性菌株进行了血清学、DNA同源性、同工酶分析和蛋白质二维聚丙烯酰胺凝胶电泳（2-D PAGE）研究，试图将这个菌群划分为明确的分类单元。柔膜菌目分类学小组委员会设立的一个特别委员会审查了已知数据，但发现这导致了对未分类菌株分类的不同意见，部分原因是缺乏关于各标准相对权重的指导方针，部分原因是该菌群每个成员的菌株研究得不够充分。尽管提出了分类方案，但对任何一个方案都未达成完全一致，该委员会认为分类学上的决定必须等待重复测试的结果，其中六个组的几个代表性菌株将与模式菌株一起纳入测试。
