|Group:||Group IV ((+)ssRNA)|
The Closteroviridae are a family of plant viruses with filamentous, helically constructed particles showing distinct cross-banding and varying in length from 650 nanometers (nm) to over 2000 nm. The genome is a single strand of positive sense RNA whose size varies from 13 - 19 kilobases.
The genera differ in genome type and transmission vector. Ampeloviruses are bipartite and transmitted by pseudococcid mealybugs and soft scale insects; Closterovirus are monopartite and transmitted by aphids; Criniviruses are tripartite and transmitted by whiteflies.
- Genus Ampelovirus; type species: Grapevine leafroll-associated virus 3
- Genus Closterovirus; type species: Beet yellows virus
- Genus Crinivirus; type species: Lettuce infectious yellows virus
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