Abstract

Members of the family Chrysoviridae are isometric, non-enveloped viruses with segmented, linear, dsRNA genomes. There are 3–7 genomic segments, each of which is individually encapsidated. Chrysoviruses infect fungi, plants and possibly insects, and may cause hypovirulence in their fungal hosts. Chrysoviruses have no known vectors and lack an extracellular phase to their replication cycle; they are transmitted via intracellular routes within an individual during hyphal growth, in asexual or sexual spores, or between individuals via hyphal anastomosis. This is a summary of the International Committee on Taxonomy of Viruses (ICTV) Report on the taxonomy of the family Chrysoviridae, which is available at ictv.global/report/chrysoviridae.

Highlights

  • Members of the family Chrysoviridae are isometric, non-e­ nveloped viruses with segmented, linear, dsRNA genomes

  • Penicillium chrysogenum virus ATCC 9480, species Penicillium chrysogenum virus, genus Alphachrysovirus Isometric, non-­enveloped, about 40 nm in diameter A total of 8.9–16.0 kbp of dsRNA in a multipartite genome (3–7 segments, usually 4) with each segment separately encapsidated Particles containing both dsRNA and ssRNA can be isolated from infected fungal hosts

  • Virions accumulate in the cytoplasm From positive-­sense transcripts of genomic dsRNAs Fungi, plants and possibly insects Realm Riboviria; the genera Alphachrysovirus and Betachrysovirus each include multiple species

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Summary

Introduction

Members of the family Chrysoviridae are isometric, non-e­ nveloped viruses with segmented, linear, dsRNA genomes. Virion Genome Replication Translation Host range Taxonomy Penicillium chrysogenum virus ATCC 9480 (dsRNA1: AF296439; dsRNA2: AF296440; dsRNA3: AF296441; dsRNA4: AF296442), species Penicillium chrysogenum virus, genus Alphachrysovirus Isometric, non-­enveloped, about 40 nm in diameter A total of 8.9–16.0 kbp of dsRNA in a multipartite genome (3–7 segments, usually 4) with each segment separately encapsidated Particles containing both dsRNA and ssRNA can be isolated from infected fungal hosts. Virions accumulate in the cytoplasm From positive-­sense transcripts of genomic dsRNAs Fungi, plants and possibly insects Realm Riboviria; the genera Alphachrysovirus and Betachrysovirus each include multiple species

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Conclusion
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