In this article we will discuss about Viruses:- 1. Meaning of Viruses 2. Sizes and Shapes of Viruses 3. Structure. Meaning of Viruses: Virus is a Latin word which means poison. Adolf Mayer described for the first time a disease of tobacco plant. Dimitri Ivanowski, a Russian botanist in 1892 demonstrated experimentally that sap of mosaic tobacco plant was capable [...]
In this article we have compiled various notes on viruses. After reading this article you will have a basic idea about:- 1. Origin of Viruses 2. Characteristics of Viruses 3. Historical Review 4. Nature 5. Virus Induced Symptoms 6. Nomenclature, Classification and Identification 7. Plant Cell Changes 8. Methods of Transmission 9. Properties 10. Control 11. Methods 12. Virus Strains [...]
In this article we will discuss about Bacteriophages:- 1. Meaning of Bacteriophages 2. Morphology of Bacteriophages 3. Chemistry 4. Mode of Infection. Meaning of Bacteriophages: Viruses parasitic on bacteria are called bacterial viruses or bacteriophages or just phages. The word bacteriophage is derived from the Greek and means 'eater of bacteria'. They were discovered by the French scientist d'herelle in [...]