Comovirus siliquae

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symptoms of Bean pod mottle virus on soybean (click on image to enlarge it)
Author(s): Martin Draper, USDA-NIFA
Source: IPM Images
symptoms of Bean pod mottle virus on soybean (click on image to enlarge it)
Author(s): Connie Strunk, South Dakota State University
Source: IPM Images

Comovirus siliquae

Assigned virus:
bean pod mottle virus (BPMV)

The bean pod mottle virus is common in North America and important in soybeans. It has been also reported from several other regions and can infect other leguminous plants like beans or peas. In soybeans, the symptoms include chlorotic mottling, severe mosaic, leaf distortion and leaf necrosis. The seeds produced by the virus-infected soybeans can show mottled seed coats, reducing the quality of the seeds. Overall, yield reduction can be significant in soybean (Byamukama et al. 2015). Co-infections of bean pod mottle virus and soybean mosaic virus can result in a dramatic yield reduction.

BPMV is transmitted by several leaf-feeding beetles. Among these, the bean leaf beetle, Cerotoma trifurcata, is a highly efficient vector and up to 80% of beetles feeding on bean pod mottle virus-infected soybean for three days are able to transmit the virus to healthy plants. In addition, transmission through seeds is a factor, and weeds infected by the virus are also a source of inoculum. For a review of the main vector and the virus see Hadi et al. (2012).

Vernacular names
• English: bean pod mottle virus
• Français: virus de la marbrure des gousses du haricot