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Cucumber powdery mildew disease caused bySphaerotheca fuliginea is a serious disease of culti-vated cucumber in most cucumber-growing regionsof the world. Understanding resistant mechanismof cucumber against powdery mildew disease is in-creasingly crucial for breeding resistant cultivars toeffectively overcome the disease. In the case, agreat deal of researches on single proteins or en-zymes encoded by the resistant genes have beenperformed to uncover defense mechanism. Howev-er, so far there …     

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