Primary researches on dry mycelium of Penicillium chrysogenum-induced defense responses of tobacco BY-2 cell suspensions Active Oxygen Species in Plant Disease Resistance Riboflavin-induced Priming for Pathogen Defense in Arabidopsis thaliana Studies of Innate Immunity Mediated by Lysin Motif Protein and Its Signaling Priming ACTIVE OXYGEN SPECIES GENERATING IN PLANT DEFENSE AGAINST PATHOGENS