Genetic Diversity of and its Effects on .

is a saprophytic or endophytic fungus that is found worldwide. Because of the antagonist effects of on many plant pathogens, current studies on have focused on the development of biological control agents and the utilization of its various metabolites. In this study, was collected from a wheat field, and its genetic diversity was analyzed. Phylogenetic analyses identified 63 isolates of divided into seven groups, indicating a wide genetic diversity. Isolates antagonized the wheat pathogen , and reduced disease symptoms caused by in wheat coleoptiles. Moreover, pretreatment of wheat coleoptiles with induced the upregulation of pathogen-related (PR) genes, PR1, PR2, PR3, PR5, PR9, and PR10 in wheat coleoptiles responding to invasion. Overall, this study indicates that isolates can be used as biological pathogen inhibitors applied in wheat fields.