Maize rough dwarf virus
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Author(s): CIMMYT
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Maize rough dwarf virus (MRDV)
The virus infects maize in Europe, Asia and other regions. The virus causes stunting and dark green leaves with white enations. It can be also transmitted to other cereals. The vector is the leafhopper Laodelphax striatellus. Among the management options are vector control and delaying the planting date in order to avoid the migration period of the planthopper.
MRDV belongs to the genus Fijivirus and like all members of this genus has a double-stranded RNA genome, consisting of 10 segments. The RNA segments are named S1 to S10. In MRDV they range in size from 1.4 to 4.5 kb.
MRDV causes the maize rough dwarf disease, a disease which is also caused by 2 other Fijiviruses, Rice black streaked dwarf virus and Mal de Rio Cuarto virus (e.g. see Tao et al., 2013). All 3 viruses cause similar symptoms on maize.
