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首页> 外文期刊>Journal of bacteriology >COMPARISON OF THE DEVELOPMENTAL CYCLES OF SOME MEMBERS OF THE GENUS NOCARDIA
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COMPARISON OF THE DEVELOPMENTAL CYCLES OF SOME MEMBERS OF THE GENUS NOCARDIA

机译：诺卡氏菌属某些成员发育周期的比较

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Adams, James N. (University of Georgia, Athens) and Norvel M. McClung. Comparison of the developmental cycles of some members of the genus Nocardia. J. Bacteriol. >84:206–216. 1962.—A staining technique specific for cell walls was used to determine the characteristic development of Nocardia rubra, N. erythropolis, N. asteroides, and N. canicruria comb. nov. When inoculated on a fresh medium, these organisms were observed to germinate, with the production of one or more germ tubes from coccoid, ovoid, and short bacillary cells. Upon continued incubation, the germ tubes elongated to form filaments from which branches could be formed. Two other mechanisms of branching were noted. One was a result of multiple germination of cells and the other a result of single or multiple germination of short chains of cells. Both of these mechanisms could be readily differentiated from true branching. Mycelial formation varied in extent among the species studied and was governed, in part, by the types of branching which an organism exhibited. After the phase of branching development has been completed, fragmentation of the filaments and branches occurred as a result of the separation of the corresponding filament fragments following the random deposition of septa along the lengths of the cells. As the culture age increased, the separating filament fragments became shorter until they ultimately reached sizes like those of cells found in the inoculum. The observed developmental cycles of the genus Nocardia were compared to those which have been described for the genera Mycobacterium and Streptomyces, and the taxonomic implications of the differences between these developmental cycles was discussed.
机译：亚当斯（James N.）（雅典佐治亚大学）和诺维·麦克伦（Norvel M.诺卡氏菌属某些成员发育周期的比较。 J.细菌。 > 84： 206–216。 1962年。细胞壁特异性染色技术被用于确定 Nocardia rubra，N。erythropolis，N。asteroides 和 N的特征发育。 canicruria 梳子。十一月当接种到新鲜培养基上时，观察到这些生物体发芽，并从球状，卵形和短杆菌细胞产生一个或多个胚管。继续孵育后，胚芽管伸长以形成细丝，从细丝可以形成分支。注意到另外两个分支机制。一种是细胞多次发芽的结果，另一种是细胞短链的一次或多次发芽的结果。这两种机制很容易与真正的分支区分开。菌丝形成的程度在所研究的物种中有所不同，并部分地受生物体表现出的分支类型的支配。在分支发展阶段完成之后，细丝和分支的断裂是由于沿细胞长度随机分布的隔片之后相应细丝片段的分离而导致的。随着培养年龄的增加，分离的细丝片段变短，直到最终达到与接种物中细胞大小相同的大小。将观察到的诺卡氏菌属（Nocardia）的发育周期与分枝杆菌属（Mycobacterium）和链霉菌属（Streptomyces）链霉菌（emstreptomyces）的描述进行了比较。讨论了这些发育周期之间的差异。

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