葡聚六糖对黄瓜幼苗活性氧代谢的影响  

Effect of Glucohexaose on Active Oxygen Metabolism of Cucumber Seedling

作　　者：范海延[1] 李宝聚[1] 曲波[2] 吴东岳[2] 苗青[2] 

机构地区：[1]中国农业科学院蔬菜花卉研究所,北京100081 [2]沈阳农业大学生物科学技术学院,沈阳110161

出　　处：《沈阳农业大学学报》2006年第1期90-92,共3页Journal of Shenyang Agricultural University

基　　金：国家自然科学基金资助项目(30270910);北京市自然科学基金重点资助项目(60210046001002)

摘　　要：葡聚六糖是一种新型寡糖类抗病诱导剂,它能激活植物的防卫系统。采用10mg.L-1的葡聚六糖处理黄瓜幼苗后,叶片中H2O2含量明显增加,过氧化物酶(POD)和超氧化物歧化酶(SOD)活性上升,过氧化氢酶(CAT)活性明显下降,而丙二醛(MDA)含量变化不大。这些结果表明,活性氧积累与葡聚六糖诱导的抗病作用密切相关。Glucohexaose is a new kind of oligosaccharides,which can elicit plant defend system. H2O2 tended to accumulate in the cucumber leaves when sprayed with 10 mg·L^-1 glucohexaose. In addition, the activities of POD and SOD increased, activities of CAT declined significantly in the leaves following glucohexaose treatment, but MDA didn＇t change .so much. The result suggested a close relationship between the resistance of cucumber induced by glucohexaose and changes in the above-mentioned enzymes.

关 键 词：葡聚六糖 黄瓜 诱导抗性 活性氧 

分 类 号：S642.2[农业科学—蔬菜学] Q945.18[农业科学—园艺学]