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为探索在遭受盐胁迫时二斑叶螨Tetranychus urticae Koch侵染叶片的交替呼吸途径的生理学功能,在实验室条件下研究了NaCl以及水杨基氧肟酸对二斑叶螨侵染叶片的间接防御反应,以及对过氧化氢含量和细胞死亡水平的影响。200 mmol/L NaCl胁迫没有明显影响二斑叶螨侵染叶片对智利小植绥螨Phytoseiulus persimilis的吸引作用,也没有提高二斑叶螨侵染叶片中过氧化氢含量和细胞死亡的水平,但显著提高了侵染叶片中交替呼吸途径的水平。200 mmol/L NaCl和1mmol/L水杨基氧肟酸的复合处理则显著降低了二斑叶螨侵染叶片对捕食螨的吸引作用,并提高了过氧化氢含量和细胞死亡的水平。研究表明,当二斑叶螨侵染叶片遭受盐胁迫时,交替呼吸途径不仅有助于维持植物的间接防御反应,而且缓解了植物体内的氧化压力和细胞死亡。
In order to explore the physiological function of alternate respiratory pathways of Tetranychus urticae Koch infecting leaves under salt stress, the indirect and indirect effects of NaCl and salicylhydroxamic acid on the leaf blades infecting Tetranychus urticae Koch were studied under laboratory conditions Defense response, and the impact on the level of hydrogen peroxide and cell death. 200 mmol / L NaCl did not significantly affect the attraction of two-spotted spider mites to the Phytoseiulus persimilis and did not increase the level of hydrogen peroxide and cell death in the leaves of two-spotted spider mites Significantly increased the level of alternate respiration pathways in infected leaves. The combined treatment of 200 mmol / L NaCl and 1 mmol / L salicylhydroxamic acid significantly reduced the attraction of predatory mites by the leaves of two-spotted spider mites and increased the levels of hydrogen peroxide and cell death. Studies have shown that when two-spotted spider mite infects leaves under salt stress, the alternative respiratory pathway not only helps to maintain the plant’s indirect defense response, but also alleviates the oxidative stress and cell death in plants.