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中文摘要：
近海海域重金属镉污染已成为全球性的环境灾难。镉对有机体的氧化应激胁迫是引发有机体毒害效应的关键原因。海洋微藻是海域生态系统中初级生产者,研究其抵抗镉氧化应激毒害的过程和机理对海洋生态学具有重要科学意义。海洋微藻在长期进化发展过程中,形成了耐受重金属镉毒害的生长适应性反应,抵抗镉氧化应激胁迫是海洋微藻减轻或消除镉毒害的关键所在。文章概述当前近海重金属镉的污染现状,归纳重金属镉对海洋微藻的氧化应激毒害效应,提出海洋微藻对镉胁迫的抗氧化应激适应性,简介几种典型的抗氧化应激酶类与非酶类物质,最后指出该领域的关键问题并进行展望。
英文摘要：
Heavy metal cadmium（Cd） contamination along the coastal waters has become one of the most severe global environmental hazards.Cd may elicit oxidative stress,which results in consequent toxic effects in the organisms.Marine microalgae are the first primary producers in the marine ecosystem;how these aquatic organisms response to the Cd stress is a matter of ecosystem stability.During the long evolutional process of marine microalgae,they have formed some strategies to resist to Cd stress,among which the anti-oxidative stress response in marine microalgae is the key one in relieving or eliminating Cd toxicity.In this paper,Cd contamination in offshore environment is introduced,and the oxidative stress activated by Cd in marine microalgae is summarized.In addition,the anti-oxidative adaptation to Cd stress is reviewed.Several typical anti-oxidative enzymes and non-enzyme substances involved in the adaptation to Cd stress are also presented.Finally,the perspective on this research field is put forward.
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