Genus: Chrysovirus

Genus: Chrysovirus

Distinguishing features

Members of the genus Chrysovirus infect ascomycetous or basidiomycetous fungi. All members have four dsRNA genome segments ranging from 2.5 to 3.6 kbp. The genome comprises 11.5-12.8 kbp in total. The dsRNA segments are individually encapsidated in separate particles.


See discussion under family description.

Genome organization and replication

See discussion under family description.


See discussion under family description.


See discussion under family description.

Species demarcation criteria

Species demarcation criteria:

  • Host of isolation.
  • Nucleotide and deduced amino acid sequence data (≤ 70% and ≤ 53% aa sequence identity in the RdRp and CP, respectively)
  • size of dsRNA genome segments
  • length of 5′-UTR

Species demarcation considers a combination of each of the criteria listed above. While nucleotide and amino acid sequence relatedness are important criteria for species demarcation, the other listed criteria may be useful in demarcation of genetically closely related viruses that nevertheless belong to different species.

Member species

SpeciesVirus name(s)Exemplar isolateExemplar accession numberExemplar RefSeq numberAvailable sequenceOther isolatesOther isolate accession numbersVirus abbreviationIsolate abbreviation
Amasya cherry disease associated chrysovirusAmasya cherry disease associated chrysovirusTurkeyRNA1: AJ781166; RNA2: AJ781165; RNA3: AJ781164; RNA4: AJ781163RNA1: NC_009947; RNA2: NC_009946; RNA3: NC_009945; RNA4: NC_009944Complete genomeACDACV
Amasya cherry disease associated chrysoviruscherry chlorotic rusty spot associated chrysovirusItalyRNA1: AJ781397; RNA2: AJ781398; RNA3: AJ781399; RNA4: AJ781400CCRSACV
Aspergillus fumigatus chrysovirusAspergillus fumigatus chrysovirusA56RNA1: FN178512; RNA2: FN178513; RNA3: FN178514; RNA4: FN178515RNA1: NC_038872; RNA2: NC_038873; RNA3: NC_038871; RNA4: NC_038874Complete genomeAfCV
Cryphonectria nitschkei chrysovirus 1Cryphonectria nitschkei chrysovirus 1BS122RNA1: GQ290649; RNA2: GQ290645; RNA3: HM013825; RNA4: HM013826RNA1: NC_038778; RNA2: NC_038779; RNA3: NC_038781; RNA4: NC_038780Complete coding genomeCnCV1
Fusarium oxysporum chrysovirus 1Fusarium oxysporum chrysovirus 1SharzeiEF152346; EF152347; EF152348partial genomeFoCV1
Helminthosporium victoriae 145S virusHelminthosporium victoriae virus 145SA9RNA1: AF297176; RNA2: AF297177; RNA3: AF297178; RNA4: AF297179RNA1: NC_005978; RNA2: NC_005979; RNA3: NC_005980; RNA4: NC_005981Complete genomeHvV145S
Penicillium brevicompactum virusPenicillium brevicompactum virusIndianaNo entry in GenbankPbV
Penicillium chrysogenum virusPenicillium chrysogenum virusATCC9480RNA1: AF296439; RNA2: AF296440; RNA3: AF296441; RNA4: AF296442RNA1: NC_007539; RNA2: NC_007540; RNA3: NC_007541; RNA4: NC_007542Complete genomePcV
Penicillium cyaneofulvum virusPenicillium cyaneo-fulvum virusIMI58138No entry in GenbankPc
Verticillium dahliae chrysovirus 1Verticillium dahliae chrysovirus 1ChinaRNA1: HM004067; RNA2: HM004068; RNA3: HM004069; RNA4: HM004070RNA1: NC_038784; RNA2: NC_038782; RNA3: NC_038785; RNA4: NC_038783Complete genomeVdCV1

Virus names, the choice of exemplar isolates, and virus abbreviations, are not official ICTV designations.

Related, unclassified viruses

See Table 3.Chrysoviridae and Figure 3.Chrysoviridae for further details of these viruses.

Virus name

Accession number

Virus abbreviation and exemplar isolate

Number and size of genome segments (bp)

Isaria javanica chrysovirus 1 


dsRNA1: KX898416;
dsRNA2: KX898417;
dsRNA3: KX898418;
dsRNA4: KX898419

IjCV1, NB IFR-19

4 (3593, 3175, 3165, 2874)

Macrophomina phaseolina chrysovirus 1


dsRNA1: KP900886;
dsRNA2: KP900887;
dsRNA3: KP900888;
dsRNA4: KP900889

MpCV1, TN263

4 (3712, 3462, 2927, 2985)

Virus names and virus abbreviations are not official ICTV designations.