Sclerotinia sclerotiorum hypovirulence associated DNA virus 1

Sclerotinia sclerotiorum hypovirulence associated DNA virus 1
Virus classification
Group: Group II (ssDNA)

Sclerotinia sclerotiorum hypovirulence associated DNA virus 1 is a single stranded DNA virus with a circular genome that infects the fungus Sclerotinia sclerotiorum.[1] Infection with this virus decreases the virulence of this fungus. The mechanism of this effect is not known.

Although a number of viruses infect fungi, this virus is the only known example of a DNA virus infecting a fungus.

Virology

The virions are isometric particles, 20–22 nanometers in diameter. The capsid is composed on the viral coat protein.

Genome

The genome encodes only two proteins—a replicase and the coat protein. The genes are encoded on complementary strands.

Taxonomy

This virus appears to be related to but distinct from the Geminiviridae. Unlike the Geminiviridae this virus does not have a movement protein and the replicase gene lacks an intron.

References

  1. ↑ Zhang L, Fu Y, Xie J, Jiang D, Li G, Yi X (2009) A novel virus that infecting hypovirulent strain XG36-1 of plant fungal pathogen Sclerotinia sclerotiorum. Virol J 6:96
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