Poplar canker is one of disease which caused the stems cortical necrosis, the disease is one of the main obstacles for the development of poplar plantation in our country. There has been a large amount of research about the disease-resistant mechanism of poplar to canker and get a series of research progress in the induced resistant mechanism of host and pathogenic mechanism of pathogens. But the mechanism of interaction of plant-pathogen is very complexity. For probing the response mechanism of poplar to B...