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Tobacco necrosis virus (TNV)
 

Tobacco necrosis virus (TNV) is of Necrovirus genus (figure 1). The virus is transmitted by the aquatic fungus Olpidium brassicae.
 
- Symptoms
 
Brown necrotic spots appear near the veins, they may be coalescing. Occasionally young seedlings die. On mature plants, the symptoms are mainly located on the lower leaves.
 
- Characteristics 

This virus is spread worldwide, particularly in Europe, although not extensively in tobacco. It infects many hosts including vegetables and ornamentals (bean, melon, cucumber, tulip... in figure 2).

Last change : 02/28/13
  • Author :
  • D Blancard (INRAe)
necrovirus_(TNV)
Figure 1
cucurbit143
Figure 2