Plants are exposed to a vast number of potential pathogens. However, only a small amount of them can invade a certain plant species successfully, which we call them host pathogens. Plants have evolved partial or major resistance genes to fight against their host pathogens. While most of potential pathogens are non-host pathogens to a certain plant species, which are not able to colonize the plants, either due to lack of pathogenicity or non-host resistance genes of the plants. My research interest is focused on mapping, Cloning and characterization of genes confer non-host resistance, partial resistance or major resistance to rust disease in cereals.