农业环境保护2001，Vol.20Issue(3)：148-151,4.
乙酰水杨酸对镍胁迫下水稻幼苗中O-2水平和膜脂过氧化的影响
Effects of Acetosalicylic Acid on Levels of Superoxide Anion and Peroxidation of Membrane Lipid in Rice Seedlings Under Nickel-Stress
王海华 1蒋明义 1康健 1彭喜旭 1帕尼古丽2
作者信息
- 1. 湘潭师范学院生物系,
- 2. 新疆石河子大学农学院农科系,
- 折叠
摘要
Abstract
Two stress concentrations of nickel tested (10,30 μ mol· L－ 1) significantly decreased superoxide dismutase (SOD) activity in rice leaves, while enhanced NADH oxidase activity significantly in apoplast. Measurement of, malondialdehyde(MDA), relative electric conductivity showed that there was a significantly increase in both totalgeneration rate and that of apoplast, as well as in MDA content and the plasma membrane permeability after nickel treatment. Addition of 0.05 ％ acetylsalicylic (ASA) to the same nickel stress condition decreased the rate of decline in SOD activity, and that of increase in generation, MDA content and the plasma permeability observed in rice leaves treated with nickel alone. However, no changes in apoplast NADH oxidase activity were observed. The results suggested that accumulation and membrane lipid peroxidation were involved in the toxicity to rice seedlings led by nickel, and the decline in level and membrane lipid peroxidation were the reasons by which ASA mitigated the injuries induced by nickel stress in rice seedlings.关键词
镍胁迫/水稻/乙酰水杨酸/膜脂过氧化分类
农业科技引用本文复制引用
王海华,蒋明义,康健,彭喜旭,帕尼古丽..乙酰水杨酸对镍胁迫下水稻幼苗中O-2水平和膜脂过氧化的影响[J].农业环境保护,2001,20(3):148-151,4.
