chapter  11
Variability and Evolution of Potato Virus Y, the Type Species of the Potyvirus Genus
ByLaurent Glais, Camille Kerlan, Christophe Robaglia
Pages 30

This chapter describes the main characteristics of the Potyvirus genus, its relationships with other groups of positive-strand RNA viruses, and the relationships between potyvirus species. In the second part, the diversity of Potato virus y(PVY) isolates at the biological and molecular levels is mentioned. Last, the possible role of recombination events in the emergence and evolution of new PVY strains is discussed in detail.