一氧化氮对水分胁迫下小麦叶片活性氧代谢及膜脂过氧化的影响  

Effect of nitric oxide on metabolism of reactive oxygen species and membrane lipid peroxidation in Triticum aestivum leaves under water stress

作　　者：王罗霞[1] 赵志光[2] 王锁民[2] 

机构地区：[1]海南大学生命科学与农学院,海南海口570228 [2]兰州大学生命科学学院,甘肃兰州730000

出　　处：《草业学报》2006年第4期104-108,共5页Acta Prataculturae Sinica

基　　金：国家重点基础研究专项基金资助项目(G1999011705)

摘　　要：着重探讨了在水分胁迫条件下,一氧化氮对小麦叶片膜脂过氧化的影响。试验结果表明,低浓度的NO能够提高小麦叶片中抗氧化酶的活性,消除自由基,从而缓解水分胁迫造成的细胞膜脂过氧化损伤,而高浓度的一氧化氮降低了抗氧化酶的活性,使自由基的产生量增加,从而加重了膜的损伤。We studied the effects of NO on membrane lipid peroxidation in Triticum aestivum leaves under water stress. Low concentrations of NO increased antioxidant enzyme activity and eliminated reactive oxygen species （ROS） thus reducing membrane damage induced by the water stress. In contrast, at high concentrations, NO reduced antioxidant enzyme activity and increased ROS production thereby aggravating membrane damage.

关 键 词：水分胁迫 一氧化氮 活性氧 抗氧化酶 

分 类 号：S512.1[农业科学—作物学]