Powdery mildew
stomata. Conidia are the main means of dispersal. They are dispersed by wind, as are the ascospores. In general, powdery mildew fungi are not very resistant [...] Damage symptoms Powdery mildew symptoms are fairly similar in all plant-pathogen combinations. The symptoms are white fluffy colonies, first and foremost [...] entering through the stomata and there are more stomata on the underside of the leaf. On the upper side, yellow spots are noticeable. In case of a severe epidemic