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玉米弯孢菌叶斑病菌［Curvularialunata（Wakker）Boed．］侵染不同抗性品种后，寄主叶片防御酶系和PR蛋白活性的变化及叶片汁液对病菌孢子萌发有影响，研究发现：PAL，PO，SOD和β-1，3-葡聚精酶在对弯孢菌叶斑病的抗性中起到一定的作用，尤其是PR蛋白β-1，3-葡聚糖酶活性在抗性机制中发挥更为重要的作用。木质素可能是在病菌侵染初期发挥抗侵入的作用。抗病品种叶片汁液可能含有抑菌物质，病菌侵染有利于刺激这种物质抑菌作用的提高，在抗病品种中更为明显。
Curvularia unata (Wakker) Boed. ] Inoculated with different resistant varieties, the host leaves defensive enzymes and PR protein activity changes and leaf juice on the germination of bacteria affected, the study found that: PAL, PO, SOD and β-1,3-glucuronosyltransferase It plays a certain role in the resistance to Curvularia leaf spot disease, especially the PR protein β-1,3-glucanase activity plays a more important role in the resistance mechanism. Lignin may play an anti-invasive role in the early stages of germ infection. Disease-resistant varieties of leaf juice may contain bacteriostatic substances, bacterial infection is conducive to stimulating the bacteriostasis of this material increased, more obvious in resistant varieties.