Plum pox virus(PPV,sharka disease)is the most important limiting factor for apricot production in affected areas.The cultivation of new resistant cultivars is the definitive solution to this problem,being this resistance one of the main objectives of breeding programs.During the evaluation of resistance in these programs a reduction of sharka symptoms can been observed after the infection of virus in some susceptible cultivars.In this study,we present the results of phenotypic,gene expression and phytohormonal profile changes induced by PPV infection in susceptible apricot cultivars.