''Trichovirus'' is a genus 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. Viruses are found in almo ...

in the order ''

Tymovirales ''Tymovirales'' is an order of viruses with five families. The group consists of viruses which have positive-sense, single-stranded RNA genomes. Their genetic material is protected by a special coat protein. Description Tymoviruses are mainly ...

'', in the family ''

Betaflexiviridae ''Betaflexiviridae'' is a family 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 ...

''. Plants, specifically

angiosperm Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed within a fruit ...

s such as pome fruits, citrus, and pear, serve as natural hosts for this

plant pathogen Plant diseases are diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). Organisms that cause infectious disease include fungi, oomycetes, bacteria, viruses, viroids, virus-like orga ...

. 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 virus * ''Trichovirus chloropersicae'', Peach chlorotic leaf spot virus * ''Trichovirus latensavii'', Cherry latent virus 1 * ''Trichovirus maculavii'', Cherry mottle leaf virus * ''Trichovirus mali'', Apple chlorotic leaf spot virus * ''Trichovirus mipersicae'', Peach virus M * ''Trichovirus necroacini'', Grapevine berry inner necrosis virus * ''Trichovirus persicae'', Peach mosaic virus * ''Trichovirus phlomis'', Phlomis mottle virus * ''Trichovirus 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.

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 Eriophyidae is a family of more than 200 genera of mites, which live as plant parasites, commonly causing galls or other damage to the plant tissues and hence known as gall mites. About 3,600 species have been described, but this is probably l ...

, requiring a

helper virus A helper virus is a virus that allows an otherwise-deficient coinfecting virus to replicate. These can be naturally occurring as with Hepatitis D virus, which requires Hepatitis B virus to coinfect cells in order to replicate. Helper viruses are a ...

for transmission.

References

External links

Viralzone: Trichovirus

ICTV
{{Taxonbar, from=Q3539032 Trichoviruses Viral plant pathogens and diseases Virus genera