''Nanoviridae'' is a family 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. Viruses are found in almo ...
.
Plants serve as natural hosts. The family contains 2 genera.
Diseases associated with this family include: stunting.
Taxonomy
The recognized genera are:[
* '' Babuvirus''
* '' Nanovirus''
]
Virus structure and genome
Viruses in the family ''Nanoviridae'' are non-enveloped, with icosahedral and round geometries, and T=1 symmetry. The diameter is around 18–19 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.infection
An infection is the invasion of tissue (biology), tissues by pathogens, their multiplication, and the reaction of host (biology), host tissues to the infectious agent and the toxins they produce. An infectious disease, also known as a transmis ...
of a host cell, the small DNA molecules that have become encapsidated with the genomic ssDNA act as primers. They bind to complementary regions and help in initiation of DNA synthesis by host polymerases. On completion of synthesis, there will be a double stranded intermediate that is transcribed unidirectionally. Most individual nanovirus particles only encode for a single protein
Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residue (biochemistry), residues. Proteins perform a vast array of functions within organisms, including Enzyme catalysis, catalysing metab ...
.
DNA-templated transcription is the method of transcription. The virus exits the host cell by nuclear pore export, and tubule-guided viral movement. Plants serve as the natural host. The virus is transmitted via a vector (aphids).
References
External links
ICTV Report ''Nanoviridae''
*
Notes on Nanoviridae
{{Taxonbar, from=Q3772923
Virus families