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, 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 A
* ''Capillovirus alphagerberae'', Gerbera capillovirus A
* ''Capillovirus alphamume'', Mume virus A
* ''Capillovirus alpharibis'', Currant virus A
* ''Capillovirus alphavii'', Cherry virus A
* ''Capillovirus mali'',
Apple stem grooving virus
Apple stem grooving virus is a plant pathogenic virus of the family '' Betaflexiviridae''.
External linksICTVdB - The Universal Virus Database: Apple stem grooving virusRubber tree virus 1
* ''Capillovirus 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.
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.