| Effects of Wounding and Exogenous Jasmonic Acid on the Peroxidation of Membrane Lipid in Pea Seedlings Leaves |
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| 引用本文： | LIU Yan HAO Yan-yan LIU Yan-yan HUANG Wei-dong. Effects of Wounding and Exogenous Jasmonic Acid on the Peroxidation of Membrane Lipid in Pea Seedlings Leaves[J]. 中国农业科学(英文版), 2005, 4(8): 614-620 |
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| 作者姓名： | LIU Yan HAO Yan-yan LIU Yan-yan HUANG Wei-dong |
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| 作者单位： | [1]College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, P.R.China [2]College of Agronomy, Inner Mongolia Agricultural University, Huhhot 010019, P.R.China |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划) |
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| 摘 要： | The changes of malondialdehyde （MDA）, H2O2, and O2^7 content, or the activities of superoxide dismutase （SOD）, catalase （CAT）, ascrobate peroxidase （APX）, peroxidase （POD）, phenylalanine ammonia lyase （PAL）, and polyphenol oxidase （PPO） in pea seedlings （Pisum sativum L.） under wounding and treatment of exogenous jasmonic acid （JA） were investigated. The results showed that the activities of both phenylalanine ammonia lyase （PAL） and polyphenol oxidase （PPO） were significantly increased by wounding and application of JA. The metabolism of reaction oxidative species （ROS） was enhanced, especially O2^7 and H2O2 appeared to rapidly increase. The activities of antioxidant enzymes such as SOD, CAT, APX and POD were also increased. Treatment of JA of 1 or 10 μmol L^-1 could effectively induce plant defense response, and thus decrease the peroxidation of cell membrane lipid. However, high concentration of JA （100 μmol L^-1） resulted in unbalance of metabolism of ROS and promoted the peroxidation of cell membrane lipid. We thus suggested that JA, under the suitable concentration, could induce defense response of pea seedlings to wounding.
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| 关 键 词： | 豌豆 过氧化反应 抗性表现 POD PAL |
Effects of Wounding and Exogenous Jasmonic Acid on the Peroxidation of Membrane Lipid in Pea Seedlings Leaves |
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| LIU Yan,HAO Yan-yan,LIU Yan-yan,HUANG Wei-dong. Effects of Wounding and Exogenous Jasmonic Acid on the Peroxidation of Membrane Lipid in Pea Seedlings Leaves[J]. 《Agricultural Sciences in China》, 2005, 4(8): 614-620 |
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| Authors: | LIU Yan HAO Yan-yan LIU Yan-yan HUANG Wei-dong |
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| Abstract: | The changes of malondialdehyde (MDA), H2O2, and O2-content, or the activities of superoxide dismutase (SOD), catalase(CAT), ascrobate peroxidase (APX), peroxidase (POD), phenylalanine ammonia lyase (PAL), and polyphenol oxidase(PPO) in pea seedlings (Pisum sativum L.) under wounding and treatment of exogenous jasmonic acid (JA) were investigated.The results showed that the activities of both phenylalanine ammonia lyase (PAL) and polyphenol oxidase (PPO) were significantly increased by wounding and application of JA. The metabolism of reaction oxidative species (ROS) was APX and POD were also increased. Treatment of JA of 1 or 10 μmol L-1 could effectively induce plant defense response,and thus decrease the peroxidation of cell membrane lipid. However, high concentration of JA (100 μmol L-1) resulted in unbalance of metabolism of ROS and promoted the peroxidation of cell membrane lipid. We thus suggested that JA, under the suitable concentration, could induce defense response of pea seedlings to wounding. |
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| Keywords: | Pisum sativum L. Wounding Jasmonic acid Peroxidation of membrane lipid Defense response |
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