外源一氧化氮对铅胁迫下高羊茅生理特性的影响
Effects of Exogenous Nitric Oxide on Physiological Characteristics of Tall Fescue under Lead Stress
投稿时间:2019-07-13  修订日期:2019-09-10
DOI:
中文关键词: 一氧化氮  硝普钠    高羊茅  胁迫应答
英文关键词: Nitric oxide  Sodium Nitroprusside  Lead  Tall Fescue  Stress Response
基金项目:国家自然科学基金青年基金
作者单位E-mail
陈柯 中南民族大学资源与环境学院 kechen@mail.scuec.edu.cn 
张静 中南民族大学资源与环境学院  
吴敏 武汉凯迪电力环保有限公司  
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中文摘要:
      铅(Pb)是自然界中广泛分布的有毒金属,土壤中的铅会随着食物链传递最终对人体造成伤害,植物修复环境友好且成本低,是修复铅污染的良好选择。一氧化氮(nitric oxide, NO)作为一种重要的信号分子,参与调节植物的生长、发育以及对外界的胁迫做出应激响应。NO可以由多种途径获得,本文主要研究外源添加一氧化氮的供体硝普钠(sodium nitroprusside, SNP),调节高羊茅体内NO的水平,进而从叶绿素含量、超氧化物气化酶(superoxide dismutase, SOD)、过氧化物酶(peroxidase, POD)、抗坏血酸过氧化物酶(ascorbate peroxidase, APX)、电导率(EL)、活性氧(ROS)水平、丙二醛(malondialdehyde, MDA)产量和根系等方面增强高羊茅抗逆性,提高修复效果。
英文摘要:
      Lead (Pb) is a toxic metal widely distributed in nature, it in the soil will eventually cause harm to the human body through the food chain. The phytoremediation environment is friendly and low cost, which is a good choice for repairing lead pollution. Nitric oxide (NO), as an important signaling molecule, is involved in regulating plant growth, development, and stress response to external stress. NO can be obtained from a variety of ways. This paper mainly studies the donor nitricus sodium (SNP), which is added with nitric oxide, and regulates the level of NO in tall fescue, and then from chlorophyll content, superoxide gasification enzyme. (superoxide dismutase, SOD), peroxidase (POD), ascorbate peroxidase (APX), electrical conductivity (EL), reactive oxygen species (ROS) levels, malondialdehyde (MDA) Yield and roots enhance the resistance of tall fescue and improve the repair effect.
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