摘要
超氧化物歧化酶(superoxidedismutase,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。
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.
出处
《遗传》
CAS
CSCD
北大核心
2003年第2期225-231,共7页
Hereditas（Beijing)
基金
黑龙江省科技厅攻关项目(GA01B101-1)
关键词
超氧化物歧化酶
活性氧
功能
表达调控
植物抗逆性
superoxide dismutase
reactive oxygen species
function
expression regulation
plant tolerance
