Is thought to be an important plant defense-related product against fungal pathogens. Is capable of releasing soluble and highly active elicitor molecules from fungus cell walls. Hydrolysis of (1->3)-beta-D-glucosidic linkages in (1->3)-beta-D-glucans. In intact tissues. By ethylene. The N-terminus is blocked. Belongs to the glycosyl hydrolase 17 family.