The present study also demonstrated the antifungal efficacy of another oxygenated monoterpene, 1,8-cineole against C. gloeosporioides and B. parva. Indeed, Zambonelli previously concluded that the high activity of oxygenated monoterpenes against pathogens results from interference with enzymatic reactions during cell wall synthesis. Further speculation suggests that the mode of antifungal action of essential oils could be dependent on two different mechanisms.