Mandarivirus

Mandarivirus is a subgenus of viruses in the order Tymovirales, family Alphaflexiviridae, genus Potexvirus. There are three species in this subgenus. Diseases associated with this subgenus commonly include yellow ringspot and rapid decline of the tree.[1][2]

Mandarivirus
Virus classification
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Kitrinoviricota
Class: Alsuviricetes
Order: Tymovirales
Family: Alphaflexiviridae
Genus: Potexvirus
Subgenus: Mandarivirus

Taxonomy

The following species are assigned to the subgenus:[2]

  • Citrus yellow mottle-associated virus
  • Citrus yellow vein clearing virus
  • Indian citrus ringspot virus

Structure

Viruses in Mandarivirus are non-enveloped, with flexuous and filamentous geometries. The diameter is around 13 nm. Genomes are linear, around 7.5kb in length. The genome codes for 6 proteins.[1]

SubgenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
MandarivirusFilamentousNon-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 tripartite non-tubule guided viral movement. Citrus trees serve as the natural host with grafting being a common transmission route.[1]

SubgenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
MandarivirusPlantsNoneViral movement; mechanical inoculationViral movementCytoplasmCytoplasmUnknown

References
  1. "Viral Zone". ExPASy. Retrieved 15 June 2015.
  2. "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 15 May 2021.

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