干旱胁迫对金盏菊膜脂过氧化及保护酶活性的影响  

Effects of Drought Stress on Membrane Lipid Peroxidation and Protective Enzymes Activity in Calendula officinalis

作　　者：谷文众[1] 刘杨[1] 谷振军[2] 

机构地区：[1]中南林业科技大学生命科学与技术学院,湖南长沙410004 [2]中南林业科技大学林学院,湖南长沙410004

出　　处：《经济林研究》2009年第3期79-81,97,共4页Non-wood Forest Research

摘　　要：为给金盏菊栽培技术的改进及新种选育提供理论依据,在人工模拟持续干旱条件下,研究了膜脂过氧化及保护酶活性等生理指标的变化。研究结果表明,金盏菊叶片细胞1 d内质膜透性增大,渗透调节物质和膜脂过氧化产物也相应增加,3~5 d内增大趋势不明显,其实质是POD和CAT活性先上升后下降,特别是干旱维持7 d时CAT活性低于对照水平。In order to provide theoretical basis for culture techniques improvement and new species breeding in Calendula officinalis, changes of some physiological indexes were researched, for example membrane lipid peroxidation and protective enzymes activity under the condition of artificially stimulating continuous drought stress. The results showed that cell membrane permeability of leaf in C. officinalis was increased in one day, and osmotic regulating substances and products of membrane lipid peroxidation were increased accordingly, which was not obvious in 3-- 5 days. The reason was that activities of POD and CAT firstly were increased and then decreased, especially CAT activity was lower than that of CK when drought stress last 7 days.

关 键 词：植物生理生化 金盏菊 干旱胁迫 保护酶 

分 类 号：Q945.78[生物学—植物学]