Mal de Rio Cuarto virus

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particles of the Mal de Rio Cuarto virus (arrows) in an infected maize cell (M = mitochondrion) (click on image to enlarge it)
Author(s): Graciela A. Truol1 et al.
Source: Fitopatologia Brasileira (2001), vol. 26, p. 43

Mal de Rio Cuarto virus (MRCV)

The virus is related to the Maize rough dwarf virus. It causes the Rio Cuarto disease (RCD) which is a serious maize disease in Argentina and is transmitted by the plant hopper Delphacodes kuscheli. The symptoms include dwarfing and an overgrowth of tissue on the veins in the back of the leaves, termed enation.

The disease caused by MRCV is also often called "maize rough dwarf disease", a disease which is also caused by Maize rough dwarf virus and Rice black streaked dwarf virus. All 3 viruses cause similar symptoms on maize.