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Reproduction of Rhabdoviruses

The rhabdoviruses are ubiquitous, highly infectious agents of animal and plant disease and are generally transmitted by arthropods. Assignment of viruses to the taxon rhabdoviruses (rod-shaped viruses) was originally based entirely on morphology. This classification has turned out to be fortuitously fortunate because later biochemical studies have revealed remarkable uniformity among these structurally similar viruses isolated from extremely diverse hosts. It is perhaps not farfetched to postulate a common ancestor for all the rhabdoviruses of plants, arthropods, and vertebrates. Classification of a virus as a rhabdovirus should be based on the following most important characteristics: 1. Rhabdoviruses are rod-shaped particles, varying considerably in length (60–400 nm) but of a reasonably consistent width (60–85 nm).  2. Animal rhabdoviruses tend to be bullet-shaped in appearance, flat at one end and a tapered sphere at the other. Plant rhabdoviruses are usually bacilliform in shape, quite elongated and with two round ends.  3. All rhabdoviruses appear to be surrounded by a membranous envelope with protruding spikes. All these viruses probably contain lipids and are, therefore, susceptible to disruption by ether and detergents.  

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