烟草科技Issue(12)：61-64,68,5.
打顶及仿生信号分子对烟草氧化胁迫的影响
Reaction of Tobacco to Oxidation Stress Induced by Topping and Bionic Signal Molecules
摘要
Abstract
To investigate whether the mechanical injury on tobacco by topping induces oxidation stress, the contents of superoxide anion (O2) .hydrogen peroxide (H2O2) and malondialdehyde (MDA) and the activity of superoxide dismutase (SOD) in leaf tissue were determined and their changes were analyzed and compared with untopped control in a period of time after topping. Bionic signal molecules (BSM) was immediately applied to the plants' top after topping, and relative biochemical indexes were measured. The results showed that topping would stimulate the oxidation stress. Exogenous BSM treatment would inhibit oxidation stress induced by topping, reduce the accumulation of O2~, H2O2, MDA in tobacco leaves, and improve the activity of SOD. BSM restricted the synthesis of jasmonic acid by inhibiting oxidation stress, and further reduced the accumulation of alkaloids in topped tobacco plant.关键词
烟草/打顶/仿生型信号分子(BSM)/氧化胁迫Key words
Tobacco/ Topping/ Bionic signal molecule/ Oxidation stress分类
农业科技引用本文复制引用
张新华,姚忠达,陈常伟,查向东,程新胜..打顶及仿生信号分子对烟草氧化胁迫的影响[J].烟草科技,2011,(12):61-64,68,5.基金项目
安徽中烟工业公司重点项目"基于前体物控制降低白肋烟TSNA技术研究"(20111001). （20111001）
