Different virus-resistance to Potato virus Yinfection mediated by different regions of NIbgene Responses of tobacco associated with PVYN and tobacco aphid to elevated CO2 concentration Resistance to Mixed PVY and PLRV Infection in Potato Cultivars Expressing Dual PVY and PLRV Coat Protein Genes Expression of Potato Virus Y Coat Protein Gene in Transgenic Potato Screening host factors that interact with Potato virus Y necrosis strain polypeptide CKVNP using yeast two-hybrid system Study on virus diseases of Dioscorea opposita Cytopathological Characterization of Tobacco on Co-infection with Tomato zonate spot virus and Potato virus Y Cloning and Sequencing of the Gene Encoding Coat Protein of Potato Virus Y