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Virus classification
Group: Group III (dsRNA)
Order: unassigned
Family: Hypoviridae

Hypoviridae is a family of viruses. Fungi serve as natural hosts. There are currently four species in this family, divided among 1 genera. Diseases associated with this family include: host virulence reduction.[1][2]


The diameter is around 50-80 nm. Genomes are linear, around 9-13kb in length. The genome has 1 or 2 open reading frames.[1] Hypoviridae was the first family of viruses described that lacked a capsid.[3] and does not assemble any virion to spread.

Genus Structure Symmetry Capsid Genomic arrangement Genomic segmentation
Hypovirus No true capsid Non-enveloped Linear Monopartite

Life cycle[edit]

Viral replication is cytoplasmic. Replication follows the double-stranded RNA virus replication model. Double-stranded rna virus transcription is the method of transcription. The virus exits the host cell by cell to cell movement. Fungi serve as the natural host.[1] The virus never leaves its host and probably replicates in pleomorphic host-derived lipid vesicles. Transmission is probably dependent on host hyphal anastomosis.[3]

Genus Host details Tissue tropism Entry details Release details Replication site Assembly site Transmission
Hypovirus Fungi None Cytoplasmic exchange; hyphal anastomosis Cytoplasmic exchange; hyphal anastomosis Cytoplasm Cytoplasm Cytoplasmic exchange; hyphal anastomosis


  1. ^ a b c "Viral Zone". ExPASy. Retrieved 15 June 2015. 
  2. ^ ICTV. "Virus Taxonomy: 2014 Release". Retrieved 15 June 2015. 
  3. ^ a b Dolja, V. V.; Koonin, E. V. (2012). "Capsid-Less RNA Viruses". ELS. doi:10.1002/9780470015902.a0023269. ISBN 0470016175. 

External links[edit]