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| 增强UV－B辐射对植物光能传递过程的影响 | |
| 引用本文： | 刘晓,贺俊芳,姬倩茹,岳明.增强UV－B辐射对植物光能传递过程的影响[J].光子学报,2014,39(9):1582-1587. |
| 作者姓名： | 刘晓 贺俊芳 姬倩茹 岳明 |
| 作者单位： | （1 西北大学 西部资源生物与现代生物技术教育部重点实验室,西安 710069） （2 中国科学院西安光学精密机械研究所 瞬态光学与光子技术国家重点实验室,西安 710119） |
| 基金项目： | 国家自然科学基金（30670366）、陕西省自然科学基金2009JQ3004）和西北大学研究生创新基金（07YJC14）资助 |
| 摘 要： | 为探讨增强的紫外线-B (280~315 nm)辐射对光合作用原初光能传递的光物理过程的影响,对菠菜类囊体膜及光系统II的吸收光谱、稳态荧光发射谱进行了分析.结果显示在实验条件下（温室,紫外线-B施加于植物成熟期,紫外线-B剂量1.152 kJ·m－2·d－1）,增强紫外线-B辐射并没有抑制原初光能传递过程,植物通过一系列调节机制（增强吸收短波光色素的吸收强度,调节两个光系统间能量分配,变化光合系统中色素蛋白构象、位置）保证了原初光能传递的光物理过程,将能量传递到反应中心用于光合作用. |
| 关 键 词： | UV-B 类囊体膜 光系统II 稳态荧光光谱 光能传递过程 |
| 收稿时间： | 2009-07-13 |
Effects of Ultraviolet-B Radiation on Plant Light Energy Transfer Process |
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| LIU Xiao,HE Jun-fang,JI Qian-ru,YUE Ming.Effects of Ultraviolet-B Radiation on Plant Light Energy Transfer Process[J].Acta Photonica Sinica,2014,39(9):1582-1587. | |
| Authors: | LIU Xiao HE Jun-fang JI Qian-ru YUE Ming |
| Institution: | (1 Key Laboratory of Resource Biology and Biotechnology in Western China,Ministry of Education, Northwest University,Xi′an 710069,China) (2 State Key Laboratory of Transient Optics and Technology,Xi′an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi′an 710119,China) |
| Abstract: | To clarify the effects of Ultraviolet-B (UV-B,280-315 nm) treatment on the energy transfer process in photosynthesis,steady-state absorption and fluorescence techniques are performed on thylakoid membrane and photosystem II (PSII).The results show that under greenhouse,lower UV-B radiation levels do not inhibit light energy transfer process. Plant ensures energy reach to reaction center through a series of adjustment mechanism. These mechanisms include enhancement of absorb intensity of short-wavelength-absorption pigments,regulation of energy distribution between two photosystems and the changs of conformation and (or) location about pigment-protein system. |
| Keywords: | UV-B Thylakoid Photosystem II Steady state fluorescence spectrum Light energy transfer process |
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