Sclerotinia sclerotiorum hypovirulence associated DNA virus 1

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Sclerotinia sclerotiorum hypovirulence associated DNA virus 1
Virus classification
Group: Group II (ssDNA)
Family: Genomoviridae
Genus: Gemycircularvirus

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.


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


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


This virus appears to be related to but distinct from members of the Geminiviridae. Unlike geminiviruses, this virus does not have a movement protein. It has been officially classified into the genus Gemycircularvirus within the new family Genomoviridae.[2]


  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
  2. ^ Krupovic M, Ghabrial SA, Jiang D, Varsani A (2016). "Genomoviridae: a new family of widespread single-stranded DNA viruses". Arch Virol. 161 (9): 2633–2643. doi:10.1007/s00705-016-2943-3. PMID 27343045.