The pathogen Pseudomonas cichorii is a phytopathogenic bacteria that causes diseases in a variety of plants. This bacteria is gram-negative and has the ability to survive in plant remains, soil and water. Under favorable conditions of high humidity and moderate temperatures, Pseudomonas cichorii multiplies rapidly. The bacteria enter the plant through wounds, stomata or hydathodes, establishing themselves in the vascular tissue and causing symptoms of infection. Once inside the plant, the bacteria move through the vascular system, producing toxins and enzymes that degrade tissues. Spread of the bacteria occurs primarily through water splashes, wind, and contaminated growing tools. During unfavorable periods, the bacteria can survive in the remains of infected plants, waiting for optimal conditions to reactivate its infectious cycle.