Similarly, cucurbit downy mildew (caused by Pseudoperonospora cubensis) is specific to cucurbits (e.g., cantaloupe (Cucumis melo), cucumber (Cucumis sativus), pumpkin, squash, watermelon (Citrullus lanatus) and other members of the Cucurbitaceae/gourd family).
They have a very broad host plants range, mainly broad bean (Vicia faba), green bean (Phaseolus vulgaris), pea (Pisum sativum), potato (Solanum tuberosum), tomato (Solanum lycopersicum), aubergine (Solanum melongena) and cucumber (Cucumis sativus), as well as sugar beet (Beta vulgaris) and cotton (genus Gossypium).