Plants need to obtain the full spectrum of nutrients from the environment where are extremely rich in microorganisms during the growth of plant,but infection remains a rare event.Plants form respective antimicrobial path-way during the long-term development,for example, plants was induced to produce many class of antimicrobial substance including secondary metabolites and protein,and antimicrobial protein of them play the important role of protection against infection.We find that Ginkgo biloba has the abil...