Ascoviridae

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Ascoviridae
Virus classification Edit this classification
(unranked): Virus
Realm: Varidnaviria
Kingdom: Bamfordvirae
Phylum: Nucleocytoviricota
Class: Megaviricetes
Order: Pimascovirales
Family: Ascoviridae
Genera

Ascoviridae is a

invertebrates, mainly noctuids and spodoptera species; it contains two genera, Ascovirus, which contains three species, and Toursvirus with a single species Diadromus pulchellus toursvirus.[1][2][3]

Taxonomy

The family contains the following genera and species:[4]

Genome

Genome

The genome is not segmented and contains a single molecule of circular double-stranded DNA. The genome has a guanine + cytosine content of 42-60%.[citation needed]

The genome of Spodoptera frugiperda ascovirus 1a has been sequenced.

sphingomyelinase, a phosphate acyltransferase and a patatin-like phospholipase.[5]

Virology

The virions consist of an envelope, a core, and an internal lipid membrane associated with the inner particle. The virus

ovoid, and allantoid
.

Genus Structure Symmetry Capsid Genomic arrangement Genomic segmentation
Ascovirus Bacilliform, ovoidal or allantoid Enveloped Circular Monopartite

[1][2][3]

These viruses infect immature stages of the order

haemolymph, making it milky white, a characteristic of this disease. The circulation of virions and vesicles in the blood facilitates mechanical transmission by parasitic wasps.[6]

Genus Host details Tissue tropism Entry details Release details Replication site Assembly site Transmission
Ascovirus Insects: Noctuids Most Cell receptor endocytosis Cleavage Nucleus Cytoplasm Mechanical

[1][2][3]

Evolution

Ascoviruses evolved from iridoviruses (family

Polydnaviridae),[6][7] although other studies have not been able to confirm this link.[8]

References

  1. ^
    PMID 28218573
    .
  2. ^ a b c "Ascoviridae". ICTV Online (10th) Report.
  3. ^ a b c "Viral Zone". ExPASy. Retrieved 12 June 2015.
  4. ^ "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 22 May 2021.
  5. ^
    PMID 16987980
    .
  6. ^
    PMID 19216438
    .
  7. PMID 18801176
    .
  8. PMID 20523890
    .

External links

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