''Nanovirus'' is a genus of

viruses A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. Since Dmitri Ivanovsky's 1 ...

, in the family ''

Nanoviridae ''Nanoviridae'' is a family of viruses. Plants serve as natural hosts. There are currently 12 species in this family, divided among 2 genera and one unassigned species. Diseases associated with this family include: stunting. Their name is derive ...

''.

Legume A legume () is a plant in the family Fabaceae (or Leguminosae), or the fruit or seed of such a plant. When used as a dry grain, the seed is also called a pulse. Legumes are grown agriculturally, primarily for human consumption, for livestock f ...

plants serve as natural hosts. There are 11 species in this genus. Diseases associated with this genus include: stunting, severe necrosis and early plant death.

Taxonomy

The following 11 species are assigned to the genus: *''

Black medic leaf roll virus Black is a color which results from the absence or complete absorption of visible light. It is an achromatic color, without hue, like white and grey. It is often used symbolically or figuratively to represent darkness. Black and white have ...

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Cow vetch latent virus Cattle (''Bos taurus'') are large, domesticated, cloven-hooved, herbivores. They are a prominent modern member of the subfamily Bovinae and the most widespread species of the genus ''Bos''. Adult females are referred to as cows and adult ma ...

'' *''

Faba bean necrotic stunt virus ''Faba bean necrotic stunt virus'' (FBNSV) is a pathogenic plant virus of the family ''Nanoviridae''. Its infection cycle is remarkable because it has eight segments, each carried in a different particle, that can replicate independently in diffe ...

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Faba bean necrotic yellows virus Faba bean necrotic yellows virus (FBNYV) is a Nanovirus disease of legumes. Range Algeria, Egypt, Eritrea, Ethiopia, Libya, Morocco, Sudan, Tunisia, Azerbaijan, Iran, Iraq, Jordan, Lebanon, Pakistan, Syria, Turkey, Yemen, Spain and Balearic Is ...

'' *''

Faba bean yellow leaf virus ''Vicia faba'', commonly known as the broad bean, fava bean, or faba bean, is a species of vetch, a flowering plant in the pea and bean family Fabaceae. It is widely cultivated as a crop for human consumption, and also as a cover crop. Vari ...

'' *'' Milk vetch dwarf virus'' *'' Parsley severe stunt associated virus'' *'' Pea necrotic yellow dwarf virus'' *'' Pea yellow stunt virus'' *'' Sophora yellow stunt virus'' *''

Subterranean clover stunt virus Subterranean(s) or The Subterranean(s) may refer to: * Subterranea (geography), underground structures, both natural and man-made Literature * Subterranean (novel), ''Subterranean'' (novel), a 1998 novel by James Rollins * ''Subterranean Magaz ...

Structure and genome

Virions in the genus ''Nanovirus'' are non-enveloped, with icosahedral and round geometries, and T=1 symmetry. The diameter is around 18-19 nm. The genome is multipartite, and the genome components (6 or 8, depending on the genus) are circular, around 1kb in length, essentially carry only one gene, and are individually encapsidated forming small icosahedral virions (18–20 nm).

Life cycle

Viral replication is nuclear. Entry into the host cell is achieved by penetration into the host cell. Replication follows the ssDNA rolling circle model. DNA-templated transcription is the method of transcription. The virus exits the host cell by nuclear pore export, and tubule-guided viral movement. Legume plants serve as the natural host. The virus is transmitted via a vector (the virus does not replicate in this). Transmission routes are vector.

References

External links

ICTV Report: ''Nanoviridae''

{{Taxonbar, from=Q18819832 Nanoviridae Virus genera