夜间低温对樱桃番茄叶片氧化活性的影响  

Effect of Low Nocturnal Temperature on Active Oxygen Metabolism of Cherry Tomato Leaves

作　　者：张晓旭[1] 叶景学[2] 侯杰[1] 王凯[1] 孙雨晴[1] 张广臣[1] 

机构地区：[1]吉林农业大学园艺学院,长春130118 [2]中国医学科学院/北京协和医学院药用植物研究所,北京100193

出　　处：《东北农业科学》2017年第2期39-43,共5页Journal of Northeast Agricultural Sciences

基　　金：吉林省科技发展计划项目(20140204053NY);长春市科技计划项目(2014187)

摘　　要：以樱桃番茄"魔鬼"为试材,利用人工气候箱模拟设施栽培中的夜间低温条件,以15℃夜温为对照,研究5℃、8℃、11℃夜间温度对番茄叶片活性氧代谢、抗氧化酶活性、丙二醛和可溶性蛋白的影响。实验结果显示:夜间低温胁迫可以诱导樱桃番茄超氧阴离子产生速率、过氧化氢、丙二醛和可溶性蛋白含量上升;SOD、CAT活性在夜间低温胁迫下呈现先上升后下降的趋势,其中SOD活性始终高于对照,但CAT活性在处理后期低于对照水平;POD活性则随处理时间的延长和温度的降低呈上升趋势,且始终高于对照。With cherry tomato＇Devil＇as the test material, effect of low nocturnal temperature at 5℃, 8℃ and 11℃simulated by climate chambers on the active oxygen metabolism, antioxidant enzyme activity, malondialdehyde（MDA） and soluble protein of tomato leaves were studied, taking nocturnal temperature 15℃ as the control. The results showed that low noctural temperature treatment increased O2^-. production rate, H2O2, malondialdehyde（MDA）contents and soluble protein contents. The activity of SOD and CAT showed a tendency to rise first and then decrease under nocturnal low temperature stress. The activity of SOD was higher than that of the control, but CAT activity was lower than the control at the later stage of treatment. The POD activity increased with the prolongation of treatment time and temperature.

关 键 词：樱桃番茄 夜间低温 活性氧代谢 SOD POD CAT 

分 类 号：S641.2[农业科学—蔬菜学]