I. A Coccoid Form of C. diphtheriae Susceptible to Bacteriophage
نویسندگان
چکیده
منابع مشابه
Bacteriophage production by doubly lysogenic Corynebacterium diphtheriae.
Parental and recombinant phage production by tandem, double lysogens of Corynebacterium diphtheriae was studied in strains in which the coupling of prophage markers and the order of prophage was established. The results from studies of mass lysates and single bursts showed that the recombinant class of phage, designated R1, was predominant in UV-induced lysates followed by the parental, P1 clas...
متن کاملC. diphtheriae. II. Specific characteristics of the growth curve of C. diphtheriae.
In a previous publication evidence was presented for the conclusion that biochemical activity of C. diphtheriae during the growth phase should be differenciated from those of other bacilli(1). It seems to be rather contradictorious to say that chemical activities of this organism fall to the minimum lebel during its growth phase. This paper develops further the experimental and theoretical aspe...
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After characterization of preferred conditions for Helicobacter pylori survival in the sessile state, it was observed that the bacterium transforms from spiral to coccoid under mild circumstances, whereas under extreme ones it is unable to undergo shape modification. This strongly supports the view that transformation into the coccoid form is an active, biologically led process, switched on by ...
متن کاملCoccoid form of Helicobacter pylori as a morphological manifestation of 1 cell adaptation to the environment
3 Escola Superior de Tecnologia e Gestão, Instituto Politécnico de Viana do Castelo, Portugal 8 9 E-mails: [email protected]; [email protected]; [email protected]; 10 [email protected]; [email protected] and [email protected]. 11 12 Abstract After characterization of preferred conditions for Helicobacter pylori survival in the 13 sessile state, it was observed t...
متن کاملIs the coccoid form of Helicobacter pylori viable?
Helicobacter pylori was grown on solid medium for up to 5 weeks. Morphological conversion from spiral to coccoid forms began after 7 days incubation under microaerophilic conditions. Similar to the exponential cultures, the ageing bacteria produced alkaline phosphatase, acid phosphatase, leucine arylamidase and naphthol-AS-beta 1-phosphohydrolase, although there was a reduction in the levels of...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1934
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.27.4.403-417.1934