Notes on Genus: Chrysovirus

icosahedra

Type member: Penicillium chrysogenum virus

Contents

Members of this Genus
General Description
Morphology
Electron Micrograph
Genome
Genus Genomic Organization
Genome Map
Type Member Genomic Organization
All Known Sequences
Curated Sequences

General Description

This is the only genus in the family Chrysoviridae. Members are mostly mycoviruses with double stranded RNA genomes in four segments. The genus was previously classified in the family Partitiviridae but this now only contains members with two genome components and sequence data indicate that members of the two families are only distantly related. Some chrysovirus sequences have now been isolated from plants; it is not yet clear whether these are genuine plant pathogens, or whether they have been isolated from a parasitic fungus within the plant. The name is from the species of the fungus host of the type member.

Morphology

Virions isometric (icosahedral), not enveloped, 35-40 nm in diameter.

Genome

Linear, double stranded RNA with four segments, ranging from about 2.8-3.6 kb in size.

Genus Genomic Organization

There are four RNAs, each encoding a single protein.

Type Member Genomic Organization

There are four RNAs: