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以水稻野败型雄性不育系珍汕９７Ａ及其保持系珍汕９７Ｂ的一叶一心期幼苗为试验材料，用对珍汕９７Ａ专化致病的稻瘟病菌９０－２菌株产生的粗毒素处理幼苗，测定两种试材不同时间叶片中几种细胞保护酶、与活性氧代谢有关的酶、丙二醛含量和可溶性蛋白质含量的动态变化，以探讨Ａ、Ｂ两系对专化性毒素的反应差异，进而分析由于细胞质不同而引起病理反应的差异。结果表明：（１）稻瘟病菌９０－２毒素处理对珍汕９７Ａ的损害大于珍汕９７Ｂ。（２）引起植株体内与活性氧代谢有关的酶活性、抗性相关酶、丙二醛含量和可溶性蛋白质含量发生变化，这种变化在珍汕９７Ａ、Ｂ之间有差异；毒素对珍汕９７Ａ的过氧化氢酶、过氧化物酶活性有专化性刺激作用。（３）超氧化物歧化酶、苯丙氨酸解氨酶活性上升幅度与珍汕９７Ａ、Ｂ对稻瘟病菌９０－２菌株的抗性大小成正相关，丙二醛含量与抗性大小成负相关。试验结果还表明，粗毒素对幼苗某些蛋白质的表达合成有刺激作用。
Taking one-leaf-one-seedling of the wild-type male sterile line Zhenshan 97A and its maintainer Zhenshan 97B as test materials, the crude toxins produced by strain 90-2 of pathogenic Magnaporthe grisea 97F The seedlings were treated and the dynamic changes of several cytoprotective enzymes, active oxygen metabolism-related enzymes, malondialdehyde content and soluble protein content in leaves of the two test materials at different times were determined to investigate the effects of A and B Of the differences in response, and then analyzed due to different cytoplasmic pathological differences caused by the reaction. The results showed that: (1) 90-2 toxin of Magnaporthe grisea was more harmful to Zhenshan 97A than Zhenshan 97B. (2) The activities of enzymes related to reactive oxygen metabolism in plants were induced, and the contents of resistance-related enzymes, malondialdehyde and soluble protein were changed. The changes were different in Zhenshan 97A and B; Catalase, peroxidase activity has a special stimulus. (3) The increase of superoxide dismutase and phenylalanine ammonia lyase activity was positively correlated with the resistance of Zhenshan 97A and B to Magnaporthe grisea 90-2, and the content of MDA and the resistance were negative Related. The results also show that crude toxin can stimulate the synthesis and expression of certain proteins in seedlings.