REVERSION OF L FORMS AND SPHEROPLASTS OF PROTEUS MIRABILIS
نویسندگان
چکیده
منابع مشابه
Reversion of L forms and spheroplasts of Proteus mirabilis.
Altenbern, Robert A. (U.S. Army Chemical Corps, Fort Detrick, Frederick, Md.). Reversion of L forms and spheroplasts of Proteus mirabilis. J. Bacteriol. 85:269-272. 1963.-Spheroplasts or 3-B type L forms of Proteus mirabilis formed by growth in the presence of penicillin are able to revert to the bacillary form, as judged by regain of resistance to osmotic shock. Reversion takes place in the ab...
متن کاملReversion of 3A type L forms of Proteus mirabilis.
Reversion of L forms to the normal bacterial state has been described in general terms in a variety of bacterial cell-L-form systems (Dienes and Weinberger, 1951). The relatively large 3B type L colony formed on penicillin-containing medium is composed entirely of spherical bodies of varying sizes (2 to 10 ,u in diameter) that appear to propagate by a budding process. In contrast, 3A type L for...
متن کاملProperties of Proteus mirabilis and Providence spheroplasts.
Proteus mirabilis strain I 3 and Providence strain NCTC 92 I I were converted to osmotically sensitive spheroplasts by growth in the presence of penicillin or glycine in sucrose-supplemented or unsupplemented medium. Lysazyme in the presence of tris and ethylenediaminetetra-acetic acid (EDTA) converted both these strains to spheroplasts. Penicillin spheroplasts could be stabilized with sucrose,...
متن کاملSusceptibility to polymyxin B in penicillin G-induced Proteus mirabilis L forms and spheroplasts.
A polymyxin B-resistant strain of Proteus mirabilis was converted into L forms and spheroplasts in the presence of penicillin G. This treatment caused a 400-fold increase in polymyxin B susceptibility. The acquired susceptibility was in the range of the natural susceptibility reported for susceptible gram-negative bacteria ( approximately 1 mug/ml). The high susceptibility to polymyxin B was lo...
متن کاملCritical factors influencing growth of L forms of Proteus mirabilis.
The observations, primarily by Dienes and associates, of L colonies arising spontaneously or by penicillin induction from species of Proteus or Salmonella led to the description of two morphologically distinct colonial forms, designated as the 3B type and the 3A type. It has been reported further that the viable elements of these two types exhibit markedly dissimilar properties such as size, nu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1963
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.85.2.269-272.1963