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学科主题: Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences
题名: Effects of UV-B radiation on photosynthesis activity of Wollfia arrhiza as probed by chlorophyll fluorescence transients
作者: Wang, Gaohong1; Hao, Zongjie1; Anken, Ralf H.2; Lu, Jinying3; Liu, Yongding1
通讯作者: Liu, YD, Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
关键词: UV-B ; Wolffia arrhiza ; Photosynthesis ; Chlorophyll fluorescence transients ; CO(2) assimilation ; Photosynthetic pigments
刊名: ADVANCES IN SPACE RESEARCH
发表日期: 2010-04-01
DOI: 10.1016/j.asr.2009.12.004
卷: 45, 期:7, 页:839-845
收录类别: SCI
文章类型: Article
部门归属: [Wang, Gaohong; Hao, Zongjie; Liu, Yongding] Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Anken, Ralf H.] Biomed Sci Support Ctr, German Aerosp Ctr, Inst Aerosp Med, D-51147 Cologne, Germany; [Lu, Jinying] Chinese Acad Sci, Inst Genet & Dev Biol, Beijing 100101, Peoples R China
WOS标题词: Science & Technology ; Physical Sciences
资助者: Chinese Manned Spaceflight Project ; Natural Science Foundation of China [30400093, 30970688]
类目[WOS]: Astronomy & Astrophysics ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
研究领域[WOS]: Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences
摘要: The higher plant Wolffia arrhiza is regarded to be well suited concerning the provision of photosynthetic products in the cycle of matter of a Controlled Ecological Life Support System (CELSS) to be established in the context of extraterrestrial, human-based colonization and long-term space flight. Since UV radiation is one major extraterrestrial environmental stress for growth of any plant, effects of UV-B radiation on W arrhiza were assessed in the present study. We found that UV-B radiation significantly inhibited photosynthetic CO2 assimilation activity, and the contents of chlorophyll a, chlorophyll b (Chl a, Chl b) and carotenoids considerably decreased when plants were exposed to UV-B radiation for 12 It. High UV-B radiation also declined the quantum yield of primary photochemistry (phi(po)), the quantum yield for electron transport phi(Eo) and the efficiency per trapped excitation (psi(o)) in W. arrhiza simultaneously, while the amount of active PSII reaction centers per excited cross section (RC/CS) and the total number of active reaction centers per absorption (RC/ABS) had comparative changes. These results indicate that the effects of UV-B radiation on photosynthesis of W arrhiza is due to an inhibition of the electron transport and via inactivation of reaction centers, but the inhibition may take place at more than one site in the photosynthetic apparatus. (C) 2009 COSPAR. Published by Elsevier Ltd. All rights reserved.
英文摘要: The higher plant Wolffia arrhiza is regarded to be well suited concerning the provision of photosynthetic products in the cycle of matter of a Controlled Ecological Life Support System (CELSS) to be established in the context of extraterrestrial, human-based colonization and long-term space flight. Since UV radiation is one major extraterrestrial environmental stress for growth of any plant, effects of UV-B radiation on W arrhiza were assessed in the present study. We found that UV-B radiation significantly inhibited photosynthetic CO(2) assimilation activity, and the contents of chlorophyll a, chlorophyll b (Chl a, Chl b) and carotenoids considerably decreased when plants were exposed to UV-B radiation for 12 It. High UV-B radiation also declined the quantum yield of primary photochemistry (phi(po)), the quantum yield for electron transport phi(Eo) and the efficiency per trapped excitation (psi(o)) in W. arrhiza simultaneously, while the amount of active PSII reaction centers per excited cross section (RC/CS) and the total number of active reaction centers per absorption (RC/ABS) had comparative changes. These results indicate that the effects of UV-B radiation on photosynthesis of W arrhiza is due to an inhibition of the electron transport and via inactivation of reaction centers, but the inhibition may take place at more than one site in the photosynthetic apparatus. (C) 2009 COSPAR. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: CYANOBACTERIUM ANABAENA SP ; J-I-P ; ULTRAVIOLET-B ; SPIRODELA-POLYRHIZA ; OXIDATIVE STRESS ; WOLFFIA-ARRHIZA ; PHOTOSYSTEM-II ; DAMAGE ; PLANTS ; LEVEL
语种: 英语
WOS记录号: WOS:000276179300003
ISSN号: 0273-1177
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/13711
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Biomed Sci Support Ctr, German Aerosp Ctr, Inst Aerosp Med, D-51147 Cologne, Germany
3.Chinese Acad Sci, Inst Genet & Dev Biol, Beijing 100101, Peoples R China

Recommended Citation:
Wang, Gaohong; Hao, Zongjie; Anken, Ralf H.; Lu, Jinying; Liu, Yongding.Effects of UV-B radiation on photosynthesis activity of Wollfia arrhiza as probed by chlorophyll fluorescence transients,ADVANCES IN SPACE RESEARCH,2010,45(7):839-845
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