Probably involved in the defense reaction of plants against pathogens. Has antifungal activity. Maximum expression found during days 4 to 8 and days 8 to 12 after inoculation with an avirulent and a virulent pathogen respectively. Upon infection by virulent and avirulent races of pathogens, for example fungal pathogen C.fulvum. Also induced by ethylene. Belongs to the CRISP family.