植物超氧化物歧化酶(SOD)的研究进展 |
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作者姓名: | 马旭俊 朱大海 |
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作者单位: | 1.哈尔滨工业大学生命科学与工程系分子与细胞发育生物学实验室,哈尔滨 150001;
2.哈尔滨医科大学医学遗传学实验室,哈尔滨 150086
1.Laboratory of Molecular and Cellular Developmental Biology,Department of Life Science and Technology,Harbin Institute of Technology,Harbin 150001,China;
2.Department of Medical Genetics,Harbin Medical University,Harbin 150086,China |
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基金项目: | 黑龙江省科技厅攻关项目(GA01B101-1) |
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摘 要: | 超氧化物歧化酶(superoxide dismutase,SOD)在需氧原核生物和真核生物中广泛存在,是活性氧清除系统中第一个发挥作用的抗氧化酶。植物正常代谢过程和在各种环境胁迫下均能产生活性氧和自由基,活性氧和自由基的积累引起细胞结构和功能的破坏。SOD岐化超氧物阴离子自由基生成过氧化氢和分子氧,在保护细胞免受氧化损伤过程中具有十分重要的作用。本文综述了SOD的功能、在细胞中的分布、表达调控和与植物抗逆性的关系。
Abstract:Superoxide Dismutases (SODs) are ubiquitously expressed antioxidant enzyme in aerobic organisms and catalyze dismutation of superoxide anion to hydrogen and molecular oxygen,the first step in active oxygen-scavenging systems.SODs play a central role in protecting cells against the toxic effects of reactive oxygen species generated during normal cellular metabolic activity or as a result of various environmental stresses.This paper reviews the expression and regulation of Sod genes and their functional role(s) during development and in response to stresses.
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关 键 词: | 表达调控 植物抗逆性 Key words 功能 活性氧 超氧化物岐化酶 |
文章编号: | 0253-9772(2003)02-0225-07 |
修稿时间: | 2002-04-11 |
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