Cacao yellow mosaic virus

Cacao yellow mosaic virus (CYMV) is a virus in the family Tymoviridae that infects cacao trees in Sierra Leone.

Cacao yellow mosaic virus
Virus classification
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Kitrinoviricota
Class: Alsuviricetes
Order: Tymovirales
Family: Tymoviridae
Genus: Tymovirus
Species:
Cacao yellow mosaic virus

Description

CYMV, like other Tymoviridae are non-enveloped viruses, surrounded by a capsid approximately 30 nanometers wide.[1] The viral capsid has T = 3 symmetry.[1] Tymoviridae have positive-sense single-stranded RNA genomes approximately 6 kilobases long.[1]

Disease

In the cacao tree, CYMV infection leads to the appearance of large circular yellow blotches on the leaves. Infected trees are not killed or severely inhibited.[2]

Ecology and distribution

CYMV has only been found in Sierra Leone where it primarily infects the cacao tree Theobroma cacao. However, it can experimentally infect a number of other dicots including Chenopodium amaranticolor, Chenopodium quinoa, Tetragonia expansa, Vinca rosea, Nicotiana clevelandii, and Nicandra physalodes.[2]

References
  1. "Tymovirus". ViralZone. Swiss Institute of Bioinformatics. Retrieved 10 November 2018.
  2. Brunt AA (1970). "Cacao yellow mosaic virus". Descriptions of Plant Viruses. Association of Applied Biologists.


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