In this article we will discuss about the nomenclature of viruses. It was realised by the virologists that binomial system of nomenclature proposed by Carolus Linnaeus and successfully used for both animals and plants cannot be used for viruses. Johnson (1927) was the first to attempt to naming the viruses. According to him, the name of a virus consists of [...]
In this article we will discuss about:- 1. Introduction to Mycoplasma 2. Morphology of Mycoplasma 3. Cell-Shape 4. Cell Structure 5. Reproduction 6. Transmission. Introduction to Mycoplasma: Mycloplasmas are the smallest, wall-less free living prokayotes belonging to class-Mollicutes. There were first discovered by Pasteur in 1843 when he was studying the causal organisms of pleuropneumonia in catties. He named it [...]
The following points highlight the life cycle of a typical plant virus such as TMV (Tobacco Mosaic Virus) which comprises of four stages. The stages are: 1. Transmission of Virus Particles (Virions) 2. Infection 3. Virus Multiplication 4. Sites of Viral RNA and Viral Protein Synthesis. Stage # 1. Transmission of Virus Particles (Virions): The rod-shaped Tobacco Mosaic Virus (TMV) [...]