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词条 Velarivirus
释义

  1. Taxonomy

  2. Structure

  3. Life cycle

  4. References

  5. External links

{{Use dmy dates|date=April 2017}}{{taxobox
| virus_group = iv
| familia = Closteroviridae
| genus = Velarivirus
| subdivision_ranks = Type Species
| subdivision =
  • Grapevine leafroll-associated virus 7

}}Velarivirus is a genus of viruses, in the family Closteroviridae. Plants serve as natural hosts. There are currently three species in this genus, including the type species Grapevine leafroll-associated virus 7. Diseases associated with this genus include: GLRaV-7: symptomless in white-berried grapevine cultivar from Albania. However, it induces leafroll symptoms onto grafted cv. cabernet.[1][2]

Taxonomy

Group: ssRNA(+){{Collapsible list|title= Order: Unassigned
|1={{Collapsible list| framestyle=border:none; padding:1.0em;|title=Family: Closteroviridae
|1={{hidden begin|title=Genus: Velarivirus}}
  • Cordyline virus 1
  • Grapevine leafroll-associated virus 7
  • Little cherry virus 1
{{hidden end}}
}}
}}[2]

Structure

Viruses in Velarivirus are non-enveloped, with filamentous geometries. These viruses are about 1500-1700 nm long. Genomes are linear, around 16-17kb in length. The genome codes for 10 proteins.[1]

Genus Structure Symmetry Capsid Genomic arrangement Genomic segmentation
VelarivirusFilamentousNon-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 serve as the natural host. Transmission routes are mechanical.[1]

Genus Host details Tissue tropism Entry details Release details Replication site Assembly site Transmission
VelarivirusPlantsNoneViral movement; mechanical inoculationViral movementCytoplasmCytoplasmMechanical inoculation: insects

References

1. ^{{cite web|title=Viral Zone|url=http://viralzone.expasy.org/all_by_species/4858.html|publisher=ExPASy|accessdate=13 August 2015}}
2. ^{{cite web|last1=ICTV|title=Virus Taxonomy: 2014 Release|url=http://ictvonline.org/virusTaxonomy.asp|accessdate=13 August 2015}}

External links

  • Viralzone: Velarivirus
  • ICTV
{{Baltimore classification}}{{Taxonbar|from=Q18818576}}

1 : Closteroviridae

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