摘要
臭氧层减薄导致地表中波紫外线UV-B(280~320nm)辐射的增强,UV-B辐射能量远高于可见光,且能被植物体内蛋白质和核酸等生物大分子吸收.酶是植物体内起催化作用的一类蛋白质,酶的数量和活性对UV-B辐射增强有强烈的响应.本文将近年来增强UV-B辐射对植物体内酶影响的研究工作进行了综述.主要包括抗氧化酶、核酮糖-1,5-二磷酸羧化酶、硝酸还原酶和谷氨酰胺合成酶.并就今后该方面的研究提出建议.
With the destruction of ozone layer, ultraviolet-B (UV-B, 280~320nm) radiation has being enhanced at the earth's surface. The energy of UV-B irradiation is far higher than that of visible light, which could be absorbed by biomacromolecules such as protein and nuclei acid. Enzyme is a sort of protein catalyzing the biochemical processes, and its content and activity in plant have strong responses to enhanced UV-B radiation. This paper summarized the research advances in the effects of enhanced UV-B radiation on the key enzymes, mainly including antioxidant enzymes, ribulose-1, 5-diphosphoscarboxylase, nitrate reductase and glutamine synthetase in terrestrial plants. Some suggestions for future research in this field were put forward.
出处
《应用生态学报》
CAS
CSCD
北大核心
2006年第5期939-942,共4页
Chinese Journal of Applied Ecology
基金
国家自然科学基金重点项目(30530630)
中国科学院知识创新工程重大项目(KSCX1-07-02-02)
"西部之光"人才计划资助项目(06C2051100)
关键词
UV-B辐射
酶
酶活性
UV-B radiation, Enzyme, Enzyme activity.