Here is a list of seven viruses that are found in plants: 1. Tobacco Mosaic Virus (TMV) 2. Potato Virus X (PVX) 3. Potato Virus Y (PVY) 4. Cucumber Mosaic Virus (CMV) 5. Cauliflower Mosaic Virus (CaMV) 6. Potato Leaf Roll Virus (PLRV) 7. Mosaic Disease of Sugarcane. 1. Tobacco Mosaic Virus (TMV): TMV is the most serious pathogen causing [...]
In this article we will discuss about the structure of influenza viruses (explained with diagram). Particles of influenza virus are highly pleomorphic, mostly spherical having 80-120 nm diameter. But it also occurs in other form like long filamentous particles (2,000 nm long, and 80-120 nm diameter). They have helical symmetry also. The outer surface of the viral particle consists of [...]
In this article we will discuss about the structure of herpesviruses (explained with diagram). All of them are morphologically identical. They are large with a varying diameter from 140-170 nm. The nucleocapsid is spherical icosahedral and of about 100 nm diameter which is enclosed in a 30 nm thick glycoprotein lipid envelope. Thickness of the envelope indicates for the presence [...]