منابع مشابه
Reversion to the streptococcal state of enterococcal protoplasts, spheroplasts, and L-forms.
A method is described for predetermining whether lysozyme-damaged enterococci grow as either the parent strain or as L-forms. Organisms treated with lysozyme grew as L-forms on media solidified with low concentrations of agar, or the damaged cells grew as streptococci on media solidified with high concentrations of gelatin. After induction, some of the L-forms reverted to the parent strain, but...
متن کاملReversion of Bacillus megaterium protoplasts to the bacillary form.
Photomicrographic evidence of reversion of Bacillus megaterium protoplasts to the bacillary form on soft agar plates hypertonic medium is demonstrated.
متن کاملGelatin-induced reversion of protoplasts of Bacillus subtilis to the bacillary form: photomicrographic study.
When lysozyme protoplasts of Bacillus subtilis 168 indoleare washed free of lysozyme and plated on hypertonic soft agar medium, each protoplast forms an L colony. The L colonies consist of cell wall-free L bodies which, in turn, give rise to new L colonies. This heritably propagated wall-less condition can be terminated promptl"'6 by plating the cells in 25%, gelatin medium. In this&t;environme...
متن کاملMorphological study of the reversion to bacillary form, of Bacillus megaterium protoplasts.
Protoplasts of Bacillus megaterium readily reverted to bacillary form in liquid media and when plated in a soft-agar layer onto the surface of appropriate agar media. Three phases of the reversion sequence could be differentiated by phase contrast microscopy: (i) increase in size of the individual protoplasts, (ii) non oriented division of the protoplasts and (iii) outgrowth of the bacillary fo...
متن کاملGelatin-induced reversion of protoplasts of Bacillus subtilis to the bacillary form: biosynthesis of macromolecules and wall during successive steps.
Protoplasts of Bacillus subtilis plated on SDG medium formed L colonies in quantative yield and propagated in the L-form indefinitely. Protoplasts or L bodies placed in 25% gelatin medium formed bacillary colonies. Details of the reversion of these naked bodies to the walled form are reported here. Protoplasts prepared in minimal medium reverted fairly synchronously 3 to 4 hr after inoculation ...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1972
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.112.1.611-614.1972