Downy mildew of Cucurbits
bordered by the veins, which are first yellow and then turn brown. On the underside of the leave fluffy growth appears which is first white and later turns [...] to this, the shorter the leaf wetness period that is required. Inside the plant, the pathogens produce haustoria, small organs with which the pathogen [...] zoospores are produced. However, in downy mildews, sporangia often germinate directly and the germ tubes infect the plants either through the stomata or directly