Archive | Viruses

Viruses: Historical Account and Origin | Microbiology

In this article we will discuss about:- 1. Historical Account of Viruses 2. General Characteristics of Viruses 3. Origin 4. Chemical Composition. Historical Account of Viruses: Some of the plant diseases, although not attributed to viruses at that time, were observed quite early. Breaking of Tulip was recorded as early as 1576 while potato curl disease and peach yellows were [...]

By |2016-11-28T11:16:52+00:00November 28, 2016|Viruses|Comments Off on Viruses: Historical Account and Origin | Microbiology

Transmission of Plant Viruses: 8 Methods | Virology

The following points highlight the eight chief methods used for the transmission of plant viruses. The methods are: 1. Seed Transmission of Virus 2. Transmission by Vegetative Propagation 3. Transmission by Mechanical Means 4. Transmission by Cuscuta 5. Soil Transmission 6. Insect Transmission 7. Transmission by Fungi 8. Some Soil Inhabiting Viruses have Nematode Vectors. Method # 1. Seed Transmission [...]

By |2016-11-28T11:16:52+00:00November 28, 2016|Viruses|Comments Off on Transmission of Plant Viruses: 8 Methods | Virology

Diagnosis of Plant Viruses: 8 Tests | Microbiology

The following points highlight the eight main serological tests which helps in rapid diagnosis of plant viruses. The tests are: 1. Histochemical Test by Immunofluorescence 2. Agar Gel Double Diffusion Test 3. Direct Antigen-coated ELISA 4. Double Antibody Sandwich ELISA  5. Indirect Double Antibody Sandwich ELISA 6. Detection of Virus by Nucleic Acid Spot Hybridisation (NASH) using DNA Probe and [...]

By |2016-11-28T11:04:41+00:00November 28, 2016|Plant Viruses|Comments Off on Diagnosis of Plant Viruses: 8 Tests | Microbiology
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