The present invention describes a method for the stimulation of the natural defense and the induction of resistance to diseases in plants by simultaneous activation of genes related to the route of the salicylic acid, the jasmonic acid/ethylene and the hypersensitive response. The invention also includes the use of brassinosteroids for the preventive and curative treatment against plant diseases caused by pathogens. In addition, includes a method for the prevention and treatment of the Huanglongbing disease in citrus.
