Bean yellow mosaic virus


Bean yellow mosaic virus is a plant pathogenic virus in the genus Potyvirus and the virus family Potyviridae. Like other members of the Potyvirus genus, it is a monopartite strand of positive-sense, single-stranded RNA surrounded by a capsid made for a single viral encoded protein. The virus is a filamentous particle that measures about 750 nm in length. This virus is transmitted by species of aphids and by mechanical inoculation.

Geographic distribution and host range

A mosaic disease, believed to be bean yellow mosaic virus, was first reported in the early 1900s infecting garden peas in the Northeastern United States. The virus is currently believed to be distributed worldwide.
In addition to peas this virus is known to infect many other legumes including green beans, peanuts, soybeans, Faba beans, several species of clover, alfalfa, vetch, lupine, black locust, fenugreek, and Crotalaria spectabilis.
It also is known to infect several non-leguminous plants including Gladiolus sp., Fressia sp., opium poppy, Canna spp. and Eustoma russellianum.
Symptoms in these plants include mosaic, leaf malformation and leaf mottling. This virus makes two kinds of viral inclusions, laminated aggregates and a nuclear inclusion.