Trichovirus


Trichovirus is a genus of viruses in the order Tymovirales, in the family Betaflexiviridae. Plants, specifically angiosperms such as pome fruits, citrus, and pear, serve as natural hosts for this plant pathogen. There are ten species in this genus.

Taxonomy

The following species are assigned to the genus, listed by scientific name and followed by the exemplar virus of the species:Trichovirus armeniacae, Apricot pseudo-chlorotic leaf spot virusTrichovirus chloropersicae, Peach chlorotic leaf spot virusTrichovirus latensavii, Cherry latent virus 1Trichovirus maculavii, Cherry mottle leaf virusTrichovirus mali, Apple chlorotic leaf spot virusTrichovirus mipersicae, Peach virus MTrichovirus necroacini, Grapevine berry inner necrosis virusTrichovirus persicae, Peach mosaic virusTrichovirus phlomis, Phlomis mottle virusTrichovirus pinovitis, Grapevine Pinot gris virus

Structure

Viruses in Trichovirus are non-enveloped, with flexuous and filamentous geometries. The diameter is around 10-12 nm, with a length of 640-760 nm. Genomes are linear, around 7.5-8.0kb in length. The genome codes for 3 proteins.
GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
TrichovirusFilamentousNon-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. Transmission routes are grafting. It is transmitted by mites of the family Eriophyidae, requiring a helper virus for transmission.
GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
TrichovirusPome fruits; citrus; pear-Viral movement; mechanical inoculationViral movementCytoplasmCytoplasmGrafting; propagating material