Ichnovirus

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Ichnovirus
Virus classification e
(unranked): Virus
Realm: incertae sedis
Kingdom: incertae sedis
Phylum: incertae sedis
Class: incertae sedis
Order: incertae sedis
Family: Polydnaviridae
Genus: Ichnovirus

Ichnovirus is a genus of viruses, in the family Polydnaviridae. Parasitoid wasps serve as hosts, but these wasps are themselves parasites of lepidoptera. There are 21 species in this genus.[1][2]

Taxonomy[]

The genus contains the following 21 species:[2]

Structure[]

Viruses in Ichnovirus are enveloped, with prolate ellipsoid and cylindrical geometries. Genomes are circular and segmented, around 6.0-20kb in length.[1]

Genus Structure Symmetry Capsid Genomic arrangement Genomic segmentation
Ichnovirus Prolate ellipsoid Enveloped Circular Segmented

Life cycle[]

Viral replication is nuclear. DNA-templated transcription is the method of transcription. The virus exits the host cell by nuclear pore export. Parasitoid wasps in the subfamilies Banchinae and Campopleginae serve as hosts, but these wasps are themselves parasites of lepidoptera. The wasp injects one or more eggs into its host along with a quantity of virus. The virus and wasp are in a symbiotic relationship: expression of viral genes prevents the wasp's host's immune system from killing the wasp's injected egg and causes other physiological alterations that ultimately cause the parasitized host to die. Transmission routes are parental.[1]

Genus Host details Tissue tropism Entry details Release details Replication site Assembly site Transmission
Ichnovirus Parasitoid wasps (Ichneumonidae) Hemocytes; fat bodies Unknown Lysis; budding Nucleus Nucleus Unknown

References[]

  1. ^ a b c "Viral Zone". ExPASy. Retrieved 15 June 2015.
  2. ^ a b "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 24 May 2021.

External links[]

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