氨胁迫下沉水植物抗氧化酶系统研究进展

发布时间：2018-03-26 16:28

本文选题：氨氮　切入点：胁迫　出处：《环境科学与技术》2016年11期

【摘要】：论文综述了不同浓度、不同形态氨及不同胁迫时间对沉水植物抗氧化酶系统的影响,分析了抗氧化酶系统各指标对氨胁迫的表征,结果表明:(1)抗氧化酶各指标绝对数值可重复性不强,抗氧化酶指标对氨浓度的响应规律才能揭示沉水植物的氨胁迫本质;(2)氨胁迫程度大小不仅与氨浓度有关,而且与胁迫时间有关,沉水植物能适应高浓度氨的短期胁迫;(3)抗氧化酶系统各指标比生长指标更为敏感,且抗氧化酶系统各指标对氨胁迫的表征能力随氨浓度及物种的不同而不同;(4)同工酶分析、外源性酶对抗氧化酶系统的刺激-响应研究以及ρ(NH_4~+)/ρ(NH_3)变化对沉水植物的影响及基于抗氧化酶系统的急性氨胁迫预警,均值得进一步研究和探索。
[Abstract]:In this paper, the effects of different concentrations, different forms of ammonia and different stress time on antioxidant enzyme system of submerged plants were reviewed, and the characteristics of various indexes of antioxidant enzyme system on ammonia stress were analyzed. The results showed that the absolute values of antioxidant enzymes were not reproducible. The response of antioxidant enzymes to ammonia concentration could reveal the nature of ammonia stress in submerged plants.) the degree of ammonia stress was related not only to ammonia concentration, but also to ammonia concentration. And related to the stress time, submerged plants can adapt to the short-term stress of high concentration of ammonia. The indexes of antioxidant enzyme system are more sensitive than the growth index. The ability of antioxidant enzyme system to characterize ammonia stress varied with different ammonia concentration and species. The study on the stimulus-response of exogenous enzymes against oxidase system, the effect of the change of 蟻 ~ (NH _ 4) / 蟻 _ (+) NH _ (3) on submerged plants and the early warning of acute ammonia stress based on antioxidant enzyme system are worthy of further study and exploration.
【作者单位】：安庆师范大学资环学院;中国环境科学研究院湖泊研究中心;
【基金】：国家重大水专项(2012ZX07105 002) 安庆师范大学博士科研启动基金(150001012)
【分类号】：X173;X52

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