羟自由基对小麦叶片的氧化损伤及外源抗氧化剂的防护效应

作物学报 ›› 1999, Vol. 25 ›› Issue (02): 174-180.

羟自由基对小麦叶片的氧化损伤及外源抗氧化剂的防护效应

赵会杰;李兰真;朱云集;郭天财

河南农业大学农学院，河南郑州，450002

收稿日期:1998-01-28 修回日期:1998-05-23 出版日期:1999-03-12 网络出版日期:1999-03-12
通讯作者: 赵会杰

Oxidative Damage of Hydroxyl Radical to Wheat Leaf and Protecth Effect of Exogenous Antioxidants

Zhao Huijie;Li Lanzhen;Zhu Yunji;Guo Tiancai

College of Agronomy, Henan Agricultural University, Zhengzhou 450002

Received:1998-01-28 Revised:1998-05-23 Published:1999-03-12 Published online:1999-03-12
Contact: Zhao Huijie

摘要/Abstract

摘要： 以DMSO为分子探针，检测了H202 - Fee2+体系及Paraquat处理后，小麦叶片中的·OH变化，并研究了·OH对叶片的氧化损伤及3种外源抗氧化剂(GSH, SBA和Mannitol)的防护效应。结果表明.HZ02 -Fe2+和paraquat处理后，叶片中的·OH含量显著增加，并导致SOD, CAT活性破坏，膜脂过氧化作用加剧，Chl含量和NR活性显著降低。3种抗氧化剂

关键词: 小麦叶片, 羟自由基, 氧化损伤, 抗氧化剂, 防护效应

Abstract: The Changes of level of hydroxyl radical(·OH) in wheat leaves treated with H2O2-Fe2+ system and paraquat was detected in vivo with dimethyl sulfoxide(DMSO) as a molecularar probe. Meanwhile，the oxidative damage to wheat leaf caused by·OH and the protective effect of some exogenous antioxidants we

Key words: Wheat leaf, Hydroxyl radical, Oxidative damage, Exogenous antioxidant, Protective effect

赵会杰;李兰真;朱云集;郭天财. 羟自由基对小麦叶片的氧化损伤及外源抗氧化剂的防护效应[J]. 作物学报, 1999, 25(02): 174-180.

Zhao Huijie;Li Lanzhen;Zhu Yunji;Guo Tiancai. Oxidative Damage of Hydroxyl Radical to Wheat Leaf and Protecth Effect of Exogenous Antioxidants[J]. Acta Agron Sin, 1999, 25(02): 174-180.

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