Abstract from Fourth National Congress of Virology with International Participation /Days of Virology in Bulgaria Sofia, May 18th - 20th, 2016

Antoniy Stoev

N. Poushkarov Institute for Soil Science, Agrotechnology and Plant Protection,

The paper deals with the features in manifestation of the aggressiveness of phytopathogenic viruses and the methods of its tracing out and estimating. The aggressiveness is a property of the phytopathogens. We present some examples for viral pathogens, which cause economically important diseases in the agroecosystems of Bulgaria. We considered the manifestation of virus aggressiveness in the link with other properties, which characterize the plant pathogens.