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Spaceflight Microgravity Reduced Photosynthetical Electron Transport and Altered Energy Distribution in Euglena gracilis
Li Xiao-Yan1; Li Gen-Bao2; Li Dun-Hai1; Hao Zong-Jie1; Wang Gao-Hong1; Richter, R. Peter3; Schuster, Martin3; Lebert, Michael3; Liu Yong-Ding2
2016-09-01
Source PublicationPROGRESS IN BIOCHEMISTRY AND BIOPHYSICS
ISSN1000-3282
Volume43Issue:9Pages:887-894
AbstractThe effects of 17-day spaceflight microgravity on the photosynthetic activity of Euglena gracilis were investigated during the SIMBOX mission on board the Chinese Shenzhou-8 spacecraft. We found that microgravity decreased Fv/Fm, while chlorophyll a and carotenoid contents were increased. The fluorescence yields were clearly reduced by microgravity, but the shape of fluorescence transients (O-J-I-P) was not changed. The quantum yield of primary photochemistry (cpPo), the quantum yield of electron transport (cpEo) and the performance index of PS II (PIABS and PICS) in microgravity group were decreased, while ABS/RC and DIo/RC were increased. 77K fluorescence emission spectra indicated that microgravity altered energy distribution between PS II and PS I and there are redshifts under microgravity. These results suggested that microgravity may impair photosynthesis by inhibition of acceptor sides of PS II in electron transfer pathway and alter PS I structure to cause a reduction of energy transfer to PS I in Euglena gracilis.
SubtypeArticle
KeywordMicrogravity Photosynthesis Chlorophyll a Fluorescence Euglena Gracilis Electron Transport
DOI10.16476/j.pibb.2016.0196
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Funding OrganizationChinese Natural Science Foundation(30970688) ; Chinese Natural Science Foundation(30970688) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2016FBZ07) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2016FBZ07) ; Chinese Manned Spaceflight Project ; Chinese Manned Spaceflight Project ; Chinese Natural Science Foundation(30970688) ; Chinese Natural Science Foundation(30970688) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2016FBZ07) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2016FBZ07) ; Chinese Manned Spaceflight Project ; Chinese Manned Spaceflight Project
Language英语
WOS Research AreaBiochemistry & Molecular Biology ; Biophysics
WOS SubjectBiochemistry & Molecular Biology ; Biophysics
WOS KeywordPHOTOSYSTEM-I ; FLUORESCENCE MEASUREMENTS ; SALINITY STRESS ; DWARF WHEAT ; PLANTS ; PHYCOBILISOMES ; TRANSIENT ; APPARATUS ; SPACE ; LEAF
WOS IDWOS:000383939200007
Funding OrganizationChinese Natural Science Foundation(30970688) ; Chinese Natural Science Foundation(30970688) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2016FBZ07) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2016FBZ07) ; Chinese Manned Spaceflight Project ; Chinese Manned Spaceflight Project ; Chinese Natural Science Foundation(30970688) ; Chinese Natural Science Foundation(30970688) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2016FBZ07) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2016FBZ07) ; Chinese Manned Spaceflight Project ; Chinese Manned Spaceflight Project
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/28359
Collection水环境工程研究中心
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
3.Univ Erlangen Nurnberg, Dept Biol, Div Cell Biol, D-91058 Erlangen, Germany
Recommended Citation
GB/T 7714
Li Xiao-Yan,Li Gen-Bao,Li Dun-Hai,et al. Spaceflight Microgravity Reduced Photosynthetical Electron Transport and Altered Energy Distribution in Euglena gracilis[J]. PROGRESS IN BIOCHEMISTRY AND BIOPHYSICS,2016,43(9):887-894.
APA Li Xiao-Yan.,Li Gen-Bao.,Li Dun-Hai.,Hao Zong-Jie.,Wang Gao-Hong.,...&Liu Yong-Ding.(2016).Spaceflight Microgravity Reduced Photosynthetical Electron Transport and Altered Energy Distribution in Euglena gracilis.PROGRESS IN BIOCHEMISTRY AND BIOPHYSICS,43(9),887-894.
MLA Li Xiao-Yan,et al."Spaceflight Microgravity Reduced Photosynthetical Electron Transport and Altered Energy Distribution in Euglena gracilis".PROGRESS IN BIOCHEMISTRY AND BIOPHYSICS 43.9(2016):887-894.
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