Cheravirus

Cheravirus is a genus of viruses in the order Picornavirales, in the family Secoviridae. Plants serve as natural hosts. There are eight species in this genus.^[1][2][3]

Cheravirus
Virus classification
(unranked):	Virus
Realm:	Riboviria
Kingdom:	Orthornavirae
Phylum:	Pisuviricota
Class:	Pisoniviricetes
Order:	Picornavirales
Family:	Secoviridae
Genus:	Cheravirus

The name is derived from Cherry rasp leaf virus.

Taxonomy

The genus contains the following species, listed by scientific name and followed by the exemplar virus of the species:^[2][4]

• Cheravirus alpinum, Alpine wild prunus virus
• Cheravirus, Arracacha virus B
• Cheravirus avii, Cherry rasp leaf virus
• Cheravirus mali, Apple latent spherical virus
• Cheravirus orobanchis, Orobanche cernua secovirus
• Cheravirus pruni, Stocky prune virus
• Cheravirus ribis, Currant latent virus
• Cheravirus trillii, Trillium govanianum cheravirus

Structure

Viruses in Cheravirus are non-enveloped, with icosahedral geometries, and T=pseudo3 symmetry. The diameter is around 25-30 nm. Genomes are linear and bipartite, around 13.3kb in length.^[1]

Genus	Structure	Symmetry	Capsid	Genomic arrangement	Genomic segmentation
Cheravirus	Icosahedral	Pseudo T=3	Non-enveloped	Linear	Segmented

Life cycle

Viral replication is cytoplasmic, and is lysogenic. 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. The virus is transmitted via a vector (nematodes maybe seed-transmitted). Transmission routes are vector and seed borne.^[1]

Genus	Host details	Tissue tropism	Entry details	Release details	Replication site	Assembly site	Transmission
Cheravirus	Plants	None	Viral movement; mechanical inoculation	Viral movement	Cytoplasm	Cytoplasm	Nematodes; mites; thrips