''Comovirinae'' is a subfamily 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 ...

in the order ''

Picornavirales ''Picornavirales'' is an order of viruses with vertebrate, invertebrate, protist and plant hosts. The name has a dual etymology. First, ''picorna-'' is an acronym for poliovirus, insensitivity to ether, coxsackievirus, orphan virus, rhinovirus, ...

'', in the family ''

Secoviridae ''Secoviridae'' is a family of viruses in the order ''Picornavirales''. Plants serve as natural hosts. There are 8 genera and 86 species in this family, one of which is unassigned to a genus. The family was created in 2009 with the grouping of f ...

''; its genera were formerly classified in the family ''Comoviridae''. Plants serve as natural hosts. There are 62 species in this subfamily, assigned to 3 genera.

Taxonomy

The genera ''Comovirus'', ''Nepovirus'' and ''Fabavirus'' were classified into the family ''Comoviridae'' in 1993. This family was classified as part of the order ''Picornavirales'' when this order was created (2008), and its genera were reclassified as the subfamily ''Comovirinae'' of the family ''

'' in 2009.ICTV Taxonomy History for Comovirinae
accessed on line Nov. 20, 2015. The subfamily contains the following genera: * ''

Comovirus ''Comovirus'' is a genus of viruses in the order ''Picornavirales'', in the family ''Secoviridae'', in the subfamily ''Comovirinae''. Plants serve as natural hosts. There are 15 species in this genus. Taxonomy The genus contains the following s ...

'' * ''

Fabavirus ''Fabavirus'' is a genus of plant viruses ( plant pathogens) in the order ''Picornavirales'', in the family ''Secoviridae'', in the subfamily ''Comovirinae''. Plants serve as natural hosts. There are seven species in this genus. Taxonomy The ge ...

'' * ''

Nepovirus ''Nepovirus'' is a genus of viruses in the order ''Picornavirales'', in the family ''Secoviridae'', in the subfamily ''Comovirinae''. Plants serve as natural hosts. There are 40 species in this genus. Nepoviruses, unlike the other two genera (' ...

Structure

Viruses in ''Comovirinae'' are non-enveloped, with icosahedral geometries, and T=pseudo3 symmetry. The diameter is around 30 nm. Genome segments are encapsidated separately into two different types of particle similar in size. Genomes are linear and segmented, bipartite, around 24-7kb in length.

Life cycle

Viral replication is cytoplasmic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive stranded RNA virus replication model. Positive stranded RNA virus transcription is the method of transcription. The virus exits the host cell by tubule-guided viral movement. Plants serve as the natural host. Transmission routes are mechanical.

References

External links

Viralzone: Comovirinae

ICTV
{{Taxonbar, from=Q3772836 Picornavirales Secoviridae Virus subfamilies