In this article we will discuss about the bacteriophage typing of various serotypes. 1. Bacteriophage Typing of S. typhi: This is done by determining the sensitivity of the culture to a series of variants of a single phage, Vi-phage II, which have been adapted to the different types of typhoid bacillus. In 1938, Craigie and Yen developed the first Vi-phage-typing [...]
In this article we will discuss about:- 1. Meaning of Mycoviruses 2. Types of Mycoviruses 3. Taxonomic Affinity 4. Replication 5. Mycoviruses and Interferon 6. Killer Phenomenon. Meaning of Mycoviruses: The viruses associated with fungi are called mycoviruses, and also mycophages. They are often typically latent but some induce symptoms. They are wide spread in all taxonomic groups of fungi. [...]
In this article we will discuss about the morphology and growth cycle of cyanophages. Cyanophages are the viruses that attack on cyanobacteria i.e. members of the blue-green algae in general. For the first time Safferman and Morris (1963) isolated a virus from the waste stabilization pond of Indiana University (U.S.A) that attacked and destroyed the three genera: Lyngbya, Plectonema and [...]