Capillovirus


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 eight species in this genus. Diseases associated with this genus include: abnormal graft union, possibly black necrotic leaf spot disease.

Taxonomy

The following species are assigned to the genus, listed by scientific name and followed by the exemplar virus of the species:Capillovirus alphaeriobotryae, Loquat virus ACapillovirus alphagerberae, Gerbera capillovirus ACapillovirus alphamume, Mume virus ACapillovirus alpharibis, Currant virus ACapillovirus alphavii, Cherry virus ACapillovirus mali, Apple stem grooving virusCapillovirus uniheveae, Rubber tree virus 1Capillovirus unipolysciasii, Polyscias capillovirus 1

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.
GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
CapillovirusFilamentousNon-envelopedLinearMonopartite

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. Transmission routes are vector, mechanical, and seed borne.
GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
CapillovirusPome fruits; citrus; pear-Viral movement; mechanical inoculationViral movementCytoplasmCytoplasmMechanical: seeds