back to HYPP Pathology
home page


Cucumber mosa´c virus (CMV) x tomato

Virus, BROMOVIRIDAE, CUCUMOVIRUS .

Crops attacked: tomato .


[R]Common Names :

Cucumber mosaic virus

Identification, Description, Biology, Epidemiology, Treatement, Possible misleading, Images


[R]Identification
The virus is detected with DAS-ELISA (Double antibody-sandwich test).

[R]Description
The common strains of the virus cause leaf mosaic symptoms. In early infection plant sterility or fruit malformation occurs.
In tomato certain strains cause partial or total loss.

[R]Biology
The virus is transmitted to the within one minute after bite of an infected plant. Without any latency period the virus is transmitted to other healthy .
plants in the same way.
Persistence of CMV on the aphid is short (a few hours).
The main species reported as vectors are : Myzus persicae , Aphis gossypii , A. craccivora , A. fabae .

[R]Epidemiology
Weeds are the main source of CMV. The first aphid invasion in the field cause primary .
CMV foci in the crop. In early invasion CMV epidemics spreads very rapidly in the cucurbits.

[R]Treatement
No curative treatment is available. When only few plants are affected they should be removed. Pesticides have little or no effect on the spread of the epidemics.
-Protect the seedlings with a "garde -manger" fence or unwoven material.
-Remove the weeds in the field and its surroundings.
- Solarize the crop with thin thermic film wrap (transparent or opaque) which keeps the aphid populations at a distance (in the open field crops).

[R]Possible misleading
.

[R] Images

  1. Cucumber mosaic virus, CMV (ROUGIER J., INRA)
    Cucumber mosaic virus on tomato Thread-like, filiform symptoms on tomato leaves resulting from the cucumber mosaic virus.
  2. Cucumber mosaic virus, CMV (BASF)
    Cucumber mosaic virus on tomato A tomato having rings, swirls and necrotic regions due to CMV.

To read this page in French

HYP3 on line : Species (scientific name), Diseases (common names), Glossary, Crops.

back to HYPP Pathology home page