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Transmission electron micrograph of rotavirus particles - not a plant virus (click on image to enlarge it)
Author(s): William M. Brown Jr.
Source: Wikimedia Commons

Reoviridae - plant viruses

The members of the family Reoviridae infect a large variety of hosts and include viruses which cause serious diseases in humans, like the diarrhoea causing rotaviruses, in cattle, in other vertebrates or in insects (see the entomopathogenic Reoviridae). However, the family also contains several important plant viruses.

Plant viruses in the family Reoviridae infect predominantly grasses and cereals. Economically important members are for example the Rice dwarf virus or the maize virus Mal de Rio Cuarto virus. Many plant Reoviridae are transmitted by leafhoppers (Cicadellidae) or planthoppers (Delphacidae).

The particles are large (60-80 nm), icosahedral and usually have a double capsid structure. The genome is multipartite with 10-12 segments. It consists of double-stranded RNA and has a total size of 18.2 to 30.5 kb.

The following plant infecting virus genera are currently entered under this family: