Abstract
By the use of two adapted phage preparations of Typing phage II the S. weltevreden phage types 4 and 5 could be classified into two sub-types each and phage types 9 and 10 into three sub-types each. The 1094 strains of S. weltevreden could be classified into a total of sixteen phage types including the sub-types.
The host range mutants of Typing phage II were distinct from the parent strain. After adaptation to two insensitive strains, one of the new preparations, ϕ IIA lost its affinity to some strains which were lysed by the parent phage strain but gained lytic affinity for a few others that were originally insensitive. The second preparation ϕ IIB showed an increase in lytic range as expected. Antigenically these preparations were shown to be related but not identical. The possible reasons for serological non-identity of host range mutants with the parent strain have been discussed.
Similar content being viewed by others
References
AdamsM. H. 1950. Methods of study of bacterial viruses. p. 15–18. In: J. H.Comar (ed). Methods in medical research, Vol. 2. — The Year Book Publ., Chicago.
LuriaS. E. 1945. Mutations of bacterial viruses affecting their host range. — Genetics 30:84–99.
RountreeP. M. 1949. The serological differentiation of staphylococcal bacteriophages. — J. Gen. Microbiol. 3: 164–173.
SoodL. R. and BasuS. 1977. Phage-typing of Salmonella weltevreden based on lysogeny. I. The phage-typing system. — Antonie van Leeuwenhoek 43: 255–261.
SoodL. R. and BasuS. 1979. Bacteriophage typing of Salmonella weltevreden. — Antonie van Leeuwenhoek 45: 595–604.
StreisingerG. 1956. The genetic control of host range and serological specificity in bacteriophages T2 and T4. — Virology 2: 377–387.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Sood, L.R., Basu, S. Sub-classification of phage types of Salmonella weltevreden and typing of strains by an extended phage typing scheme. Antonie van Leeuwenhoek 46, 467–473 (1980). https://doi.org/10.1007/BF00395827
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00395827