Indian cassava mosaic virus

Indian cassava mosaic virus (ICMV)
Virus classification
Group:
Group II (ssDNA)
Family:
Genus:
Species:
Indian cassava mosaic virus
Synonyms

Cassava Indian mosaic virus

Indian cassava mosaic virus (ICMV) is a plant pathogenic virus of the family Geminiviridae. It affects cassava (Manihot esculenta) in India and certain other countries. It is considered to be an invasive species.[1]

History

This virus was unknown in India before the introduction of cassava into the country by the Portuguese in the seventeenth century, nor has a similar virus been reported in the New World where cassava originated.[1] It is possible that the virus is native to India, affecting some yet-to-be-identified plant host, with the virus later adopting cassava as its preferred host; once present in a crop, the virus can be spread from plant to plant by insects such as whitefly.[1]

The virus was first noticed in India in 1942. Its incidence is higher in Tamil Nadu and Kerala, the states where most cassava is grown, and it is of little consequence elsewhere in the country. Depending on the cultivar and the time of year, losses in root yield can vary from negligible to 84%.[2]