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Record information and status
Record ID
Date of creation
2019-08-16 18:24 UTC (austein.mcloughlin@cbd.int)
Date of last update
2020-06-29 16:31 UTC (austein.mcloughlin@cbd.int)
Date of publication
2020-06-29 16:31 UTC (austein.mcloughlin@cbd.int)

Organism information
Scientific name
Cassava brown streak virus
Taxonomic Classification
SpeciesCassava brown streak viruses
Scientific name synonyms(s)
Cassava brown streak carlavirus, Cassava brown streak potyvirus
Common name(s)
Cassava Brown Streak Virus
Additional Classification
Group (virus)
IV ((+)ssRNA)
Type of organism
  • Viruses
Characteristics related to biosafety
Centre(s) of origin
The first report of Cassava brown streak disease was in Northeastern Tanzania (Tanganyika) in 1936.
Geographical distribution
The virus can be found in cassava growing regions in Central and East Africa.
Known pathogenicity and/or allergenicity
The virus infects mature (or nearly mature) leaves and characteristically causes chlorotic or necrotic vein banding. Dark, necrotic lesions appear within the tuber tissue and lead to post-harvest spoilage. Lesions can also sometimes appear on young (green) stems, but this is uncommon. Disease symptoms vary greatly and are influenced strongly by environmental conditions.

The virus is transmitted mechanically via cuttings. Researchers have noted  a correlation between whitefly (Bemisia tabaci) population abundance and outbreaks of cassava brown streak disease. However, attempts to demonstrate whitefly as a vector for the virus have been unsuccessful thusfar.
Common use(s)
  • Research
  • Phytopathogen
Additional Information
Additional Information
Cassava brown streak virus is 650 nm long and has a genome that consists of single strand of RNA and approximately 8.9 kilobases in length. The genome is encapsulated by the 45 kiloDalton coat protein.

Cassava brown streak disease can also be caused by closely related virus, Ugandan cassava brown streak virus. Symptoms are indistinguishable between the two viral agents.

Records referencing this document (1)
1record(s) found
Gene and DNA Sequence1 record