Capillovirus

Capillovirus
Virus classification
Group:	Group IV ((+)ssRNA)
Order:	Tymovirales
Family:	Betaflexiviridae
Genus:	Capillovirus
Type Species
Apple stem grooving virus

Capillovirus is a genus of viruses in the order Tymovirales, in the family Betaflexiviridae. Plants, pome fruits, citrus, and pear serve as natural hosts. There are currently only two species in this genus including the type species Apple stem grooving virus. Diseases associated with this genus include: abnormal graft union, possibly black necrotic leaf spot disease.^[1][2]

Taxonomy

Group: ssRNA(+)

Order: Tymovirales

• Family: Betaflexiviridae

  • Genus: Capillovirus 

    • Apple stem grooving virus
    • Cherry virus A

^[2]

Structure

Viruses in Capillovirus are non-enveloped, with flexuous and Filamentous geometries. The diameter is around 12 nm, with a length of 640 nm. Genomes are linear, around 6.5-7.5kb in length. The genome codes for 3 proteins.^[1]

Genus	Structure	Symmetry	Capsid	Genomic Arrangement	Genomic Segmentation
Capillovirus	Filamentous		Non-Enveloped	Linear	Monopartite

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, pome fruits, citrus, and pear serve as the natural host. The virus is transmitted via a vector (by seeds and no known). Transmission routes are vector, mechanical, and seed borne.^[1]

Genus	Host Details	Tissue Tropism	Entry Details	Release Details	Replication Site	Assembly Site	Transmission
Capillovirus	Pome fruits; citrus; pear	None	Viral movement; mechanical inoculation	Viral movement	Cytoplasm	Cytoplasm	Mechanical: seeds

References

1. "Viral Zone". ExPASy. Retrieved 15 June 2015.
2. ICTV. "Virus Taxonomy: 2014 Release". Retrieved 15 June 2015.

External Links

• Viralzone: Capillovirus
• ICTV