Variations in Antioxidase Activities and MDA Content in Potato Tubers Infected by Fusarium trichothecioides  

拟丝孢镰刀菌(Fusarium trichothecioides)侵染马铃薯块茎过程中抗氧化酶活性及MDA含量变化研究（英文）

作　　者：李凤兰[1] 付瑶[1] 袁强[1] 吕文河[1] 徐永清[1] 刘荣梅[1] 胡宝忠[1] 陈芾葳 徐媛媛[1] 冯艳忠[2] 

机构地区：[1]东北农业大学生命科学学院,黑龙江哈尔滨150030 [2]黑龙江省农业科学院,黑龙江哈尔滨150086

出　　处：《Agricultural Science & Technology》2015年第11期2433-2436,共4页农业科学与技术（英文版）

基　　金：Supported by Key Project of Provincial Department of Education for Scientific and Technological Research(12511061)~~

摘　　要：[Objective] This study was conducted to determine the physiological and biochemical characteristics of potato tubers infected by Fusarium trichothecioides. [Method] The soluble protein content, SOD activity, POD activity and malondialdehyde （MDA） content of the tubers of two potato varieties Atlantic and Keshan 1 infected by F. trichothecioides were measured 0, 3, 6, 9, 12, 24 and 48 h later. [Result] Com- pared with the control uninfected, the contents of soluble protein and MDA in the tu- bers of both potato varieties infected with F. trichothecioides decreased, while the SOD activity increased, indicating that SOD activity had a certain relationship with the resistance of potato to dry rot. The POD activity in Keshan 1 which is resistant to F. trichothecioides was higher than in Atlantic, which is susceptible to F. trichothe- cioides, indicating that POD activity was closely related with potato＇s resistance to Fusarium dry rot. [Conclusion] The physiological and biochemical characteristics of potato tubers infected by F. trichothecioides will provide some references for the early waming and prevention of Fusariurn dry rot.[目的]探讨拟丝孢镰刀菌(Fusarium trichothecioides)侵染马铃薯块茎的生理生化特性。[方法]采用拟丝孢镰刀菌对大西洋和克山1的薯块进行侵染,在不同时间对其内部的可溶性蛋白质含量、SOD活性、POD活性和丙二醛含量进行测定。[结果]不同抗性的马铃薯被拟丝孢镰刀菌侵染后,薯块内可溶性蛋白和丙二醛含量含量都呈现出下降的趋势,而不断上升的SOD比活性对于薯块抵抗病原菌的侵染起到了一定的作用,抗性品种内的POD酶活性高于感病品种,表明POD酶活性同抗病性密切相关。[结论]确定病原菌的侵染特性对于早期预报和防治干腐病具有重要的意义。

关 键 词：Fusarium dry rot Fusanum tdchothecioides Physiological and biochemi-cal characteristics Antioxidases 

分 类 号：S435.32[农业科学—农业昆虫与害虫防治]