Cowpea mild mottle virus

Carlavirus • Betaflexiviridae • Tymovirales • plant viruses • plant diseases • pests-diseases-weeds

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transmission EM micrograph of particles of Cowpea mild mottle virus, bar = 100 nm (click on image to enlarge it)
Author(s): Miriam Brito, Thaly Fernández-Rodríguez, Mario José Garrido, Alexander Mejías, Mirtha Romano and Edgloris Marys
Source: Viruses (2012) 4, p.3806

Cowpea mild mottle virus (CPMMV)

The virus has been first reported from Ghana, but has been subsequently also found in other tropical and subtropical countries. On cowpea it causes mottling, chlorotic blotches and leaf malformations. It can reduce yields by 10-15% and mixed infections with other plant viruses can cause more severe losses.

Several other legumes and some other crops can also become infected. It is transmitted by whiteflies (Bemisia tabaci) in a non-persistent manner. The particles are similar to those of other Carlaviruses, filamentous, flexuous and around 650 nm long.

leaf symptoms on a) Vigna unguiculata subsp. sesquipedalis, b) Glycine max and c) Chenopodium amaranticolor inoculated with Cowpea mild mottle virus (click on image to enlarge it)
Author(s): Miriam Brito, Thaly Fernández-Rodríguez, Mario José Garrido, Alexander Mejías, Mirtha Romano and Edgloris Marys
Source: Viruses (2012) 4, p.3806