黄益宗;隋立华;

• 1:中国科学院生态环境研究中心

摘要(Abstract)：

工业和农业的快速发展导致近地层O3浓度不断提高,这对陆地生态系统的动物、植物、微生物和人类健康造成伤害。O3对植物的影响尤其是对农作物的影响将关系到世界粮食的安全生产。O3污染胁迫可诱导植物产生活性氧物质,破坏植物的膜系统,影响植物的光合作用等正常生理功能。植物在自然适应过程中,可形成一套抗氧化机制来缓解O3胁迫伤害。综述了国内外近年来有关O3胁迫下植物抗氧化系统调节机制的研究进展,包括植物通过调节体内的抗氧化酶活性和非酶类物质含量来缓解O3对植物伤害的机制。O3污染胁迫下植物可调节其叶片超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)、抗坏血酸过氧化物酶(APX)、脱氢抗坏血酸还原酶(DHAR)和单脱氢抗坏血酸还原酶(MDAR)等抗氧化酶的活性。抗坏血酸(AsA)、类胡萝卜素(Car)和谷胱甘肽(GSH)等非酶类物质在清除O3胁迫产生活性氧方面具有重要的作用。另外,根据目前的研究进展,提出了一些需要继续深入探讨的问题。

关键词(KeyWords)： 臭氧;植物;抗氧化系统;胁迫;调节

Abstract:

Keywords:

基金项目(Foundation): 北国家自然科学基金面上项目(41071336);; 国家环保公益性行业科研专项(200809152)

作者(Author): 黄益宗;隋立华;

Email:

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