Investigation of Phytophthora Infestans Causing Potato Late Blight Disease

Phytophthora infestans (Mont.) cause potato late blight disease and can infect of roots, tubers, shoots the plant. The majority significant factors in determining spread is cultivation infected tubers their presence as agricultural plant debris field. Mycelium, zoospores, Oospores, sporangia, all these structures make infection, also Oospores with thick wall survive for 3 to 4 years under low temperatures. P. responsible yield losses may arrive at 100% optimum condition. There are two types mating patterns A1 A2, this depends on each type different environments. This fungus contains several genetic that have been identified through molecular analysis. genotypes led new challenges an unstable guideline study virulence aggressiveness. Different strategies or methods were used prevent control disease, included chemicals, crop rotation, bio-agents, resistant plants. many advantages disadvantages strategy, but studies mention using plants fungicide together conditions suitable times perfect effect. paper investigated important some fungus.