Mungbean yellow mosaic virus
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Author: A. Balamurugan
Source: APSnet
Mungbean yellow mosaic virus (MYMV)
The virus infects cowpea (mungbean) and various other leguminous crops. It is found in tropical and subtropical regions of western Asia, but also in parts of south-eastern Asia. The symptoms vary according to host plant and susceptibility and range from small yellow spots, over alternating green and yellow patches, to a general chlorosis followed by necrosis. The leaves can become papery white and thin. Few or no seedpods are developed. Plants may die if they are infected at an early stage. The disease can cause total crop losses. The virus is transmitted by the whitefly Bemisia tabaci in a persistent (circulative) manner. Management is mainly achieved through the use of resistant cultivars and sanitation. Vector control has not be shown to be effective.
The geminate virus particles are about 30 x 18 nm large, with a bipartite ssDNA genome consisting of DNA-A and DNA-B, both are circular and approximately 2.7 kb large. The virus is closely related to Mungbean yellow mosaic India virus which causes similar symptoms.
| Vernacular names | |
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| • English: | Mungbean yellow mosaic virus |
| • Français: | virus de la mosaïque jaune du haricot mungo |
