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| 叶绿体光合代谢中活性氧的产生与清除 | |
| 引用本文： | 张有福,陈春艳,孙会忠,陈应武. 叶绿体光合代谢中活性氧的产生与清除[J]. 生物学杂志, 2011, 28(4): 78-80,77. DOI: 10.3969/j.issn.2095-1736.2011.04.078 |
| 作者姓名： | 张有福 陈春艳 孙会忠 陈应武 |
| 作者单位： | 1. 河南科技大学农学院,洛阳,471003;中国科学院寒区旱区环境与工程研究所,兰州,730000 2. 河南科技大学农学院,洛阳,471003 3. 河南科技大学林学院,洛阳,471003 |
| 基金项目： | 国家自然基金，中国博士后基金，河南科技大学人才基金 |
| 摘 要： | 有氧代谢不可避免产生活性氧(ROS),叶绿体的PSI和PSII反应中心均是ROS产生的主要位点。叶绿体产生的ROS主要有超氧阴离子(O2-)、过氧化氢(H2O2)、羟自由基(.OH)和单线氧(1O2),其中在PSI产生的O2-将进一步产生H2O2和.OH,而1O2产生在PSII。正常生理代谢条件下,叶绿体内抗氧化系统和光能吸收利用的调节保持活性氧产生和消灭的平衡,不会影响植物的正常生理功能。 |
| 关 键 词： | 叶绿体 活性氧 抗氧化系统 |
Production and scavenging of reactive oxygen species in photosynthesis of chloroplasts |
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| ZHANG You-fu,CHEN Chun-yan,SUN Hui-zhong,CHEN Ying-wu. Production and scavenging of reactive oxygen species in photosynthesis of chloroplasts[J]. Journal of Biology, 2011, 28(4): 78-80,77. DOI: 10.3969/j.issn.2095-1736.2011.04.078 | |
| Authors: | ZHANG You-fu CHEN Chun-yan SUN Hui-zhong CHEN Ying-wu |
| Affiliation: | ZHANG You-fu1,2,CHEN Chun-yan1,SUN Hui-zhong1,CHEN Ying-wu2(1.Agronomy College,Henan University of Science and Technology,Luoyang 471003,2.Cold and Arid Region Environmental and Engineering Research Institute,the Chinese Academy of Sciences,Lanzhou 730000,3.Forestry institute,China) |
| Abstract: | Aerobic metabolism inevitably products the reactive oxygen species（ROS） in chloroplasts,and the reaction centers of PSI and PSII in chloroplast thylakoids are the major generation sites of ROS.ROS from chloroplasts mainly include superoxide anion（O-2）,hydrogen peroxide（H2O2）,singlet state oxygen（1O2） and hydroxy radical（·OH）.Both ·OH and H2O2 origin from O-2 in PSI,however,1O2 generate in PSII.In normal physiological conditions,the production and scavenging of ROS maintains balance,and will not affect the plant′s physiological function by regulating antioxidant system,absorption and elimination of light. |
| Keywords: | chloroplasts reactive oxygen species antioxidant system |
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