Betaflexiviridae
Encyclopedia
Betaflexiviridae are single-stranded positive sense RNA
RNA
Ribonucleic acid , or RNA, is one of the three major macromolecules that are essential for all known forms of life....

 plant viruses, belonging to the order Tymovirales
Tymovirales
The Tymovirales are a newly established order of viruses in the 2009 classification with four genera.This group consists of viruses which have sense single stranded RNA genomes without DNA intermediates.-External links:*ICTV Virus Taxonomy 2009...

 and thus to group IV of the Baltimore classification of viruses.

Taxonomy

The Betaflexiviridae family include the following genera:
  • Genus Capillovirus; type species: Apple stem grooving virus
    Apple stem grooving virus
    Apple stem grooving virus is a plant pathogenic virus of the family Flexiviridae.-External links:**...

  • Genus Carlavirus
    Carlavirus
    Carlavirus, also known as "Carnation latent virus group" is a genus of virus that infects plants. It contains thirty-five described species and twenty-nine tentative species..-Virology:...

    ; type species: Carnation latent virus
    Carnation latent virus
    Carnation latent virus is a plant pathogenic virus.-External links:**...

  • Genus Citrivirus;
  • Genus Foveavirus; type species: Apple stem pitting virus
    Apple stem pitting virus
    Apple stem pitting virus is a plant pathogenic virus of the family Flexiviridae.-External links:**...

  • Genus Trichovirus
    Trichovirus
    Trichovirus is a non-enveloped plant pathogenic virus. It is transmitted by mites of the family Eriophyidae, requiring a helper virus for transmission. It is infectious to a number of angiosperm species.-External links:*...

    ; type species: Apple chlorotic leaf spot virus
  • Genus Vitivirus; type species: Grape vine virus A
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