Colonial morphology and virulence of Pasteurella pestis.
نویسندگان
چکیده
The relationship of the colonial morphology of Pasteurella pestis to its virulence has been controversial. Gotschlich (1900), Markl (1914), Petrie (1929), Burgess (1930), Otten (1936), Bhatnagar (1940) and Jawetz and Meyer (1943) described numerous colonial types for which interchangeable descriptions are lacking. Most agreed upon an inconstant hereditary transmission of colonial characteristics in forms differing from the usual smooth, pearly type common to many strains of P. pestis. On the other hand, Pirie (1929), Rachinsky (1930), Bessonowa and Lenskaja (1931), Wats and Puduval (1940) and Crumpton and Davies (1956) describe more or less stable smooth or rough colonial morphology in various strains. Inability to correlate virulence with colonial morphology has been common. Thus, Markl (1914), Pirie (1929), Burgess (1930), Otten (1936), Wats and Puduval (1940), Jawetz and Meyer (1943) and Burrows and Bacon (1954) found avirulent and virulent rough and smooth colonial types in numerous strains. An extreme opinion was held by Bessonowa and Lenskaja (1931) who considered all virulent strains to be rough. Pollitzer (1954), however, considers it probable that the smooth type is characteristic of virulent freshly isolated strains. This communication describes a simple method which emphasizes the differences between smooth and nonsmooth colonies of P. pestis. It is observed that the hereditary transmission of colonial characters is not as unstable as has been thought. The resultant definition of smooth and nonsmooth forms has permitted reconsideration of the relation of colonial morphology to the
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ورودعنوان ژورنال:
- Journal of bacteriology
دوره 76 1 شماره
صفحات -
تاریخ انتشار 1958