• Fn3Pt
  • Arvalis
  • innoplant
  • semae

Potato virus S

(PVS)

 

  • Causal agent and transmission

 

Two types of Potato virus S strains may be distinguished: the ordinary strains (PVSO), distributed worldwide and very common in Europe (Germany, Poland, Central Europe), and the Andean strains (PVSA), classified as quarantine parasites in Europe as they cause much more severe reactions.

 

PVS is a Carlavirus and it is very easily transmitted both by contact between diseased and healthy plants (e.g. with farm implements) and by aphids in a non-persistent mode. The most frequently mentioned vector aphids are Myzus persicae, Aphis nasturtii and Aphis frangulae.


Host range is narrow. Susceptible species belong mainly to the Solanaceae and Chenopodiaceae.

 

  •  Significance

 

Yield reduction caused by PVS infection is usually low, at worst 10 to 20%, except in the case of mixed infections with other viruses.

Last change : 07/02/17