Verticillium dahliae(V.dahliae)is a soil borne fungal pathogen that infects a broad range of hosts.It is now becoming a major threat to many economically important crops,such as cotton and sunflower.Similar to most filamentous pathogens,V.dahliae secretes effector proteins to overcome plant Verticillium dahliae (V.dahliae) is a soil borne fungal pathogen that infects a broad range of hosts.It is now a major threat to many economically important crops, such as cotton and sunflower. effector proteins to overcome plant