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Chinese Journal of Chemistry 2011年第12期29卷 2631-2636页

作者：陈良兵贾宏瑛杜立波田秋高艳丽刘扬 State Key Lab for Structural Chemistry of Unstable and Stable Species Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China Graduate University of the Chinese Academy of Sciences Beijing 100049 China

So far it is unclear whether the release of oxygen-evolving complex （OEC） subunits including PsbO, PsbP, and PsbQ proteins is affected by the phosphorylation of photosystem ii （PSii） membranes under light stress. In this work, different phosphorylated PSii membranes were obtained from spinach. Phosphorylation partially suppressed the release of PsbO, PsbP, and PsbQ proteins from PSii membranes under light stress. Reactive oxygen species including superoxide anion, hydrogen peroxide and hydroxyl radical, were involved in the release of a small part of PsbO protein, but not in the release of PsbP and PsbQ proteins in the non-phosphorylated and phosphorylated PSii membranes. All of the results suggested that the release of PsbO, PsbP, and PsbQ proteins was partially regulated by phosphorylation in PSii membranes, and the role of reactive oxygen species in the release of OEC subunits in non-phosphorylated PSii membranes was the same as in phosphorylated PSii membranes.

关键词： protein release reactive oxygen species EPR spectroscopy radicals photosystem ii

Calcium contributes to photoprotection and repair of photosystem ii in peanut leaves during heat and high irradiance

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Journal of Integrative Plant Biology 2015年第5期57卷 486-495页

作者： Sha Yang Fang Wang Feng Guo Jing-Jing Meng Xin-Guo Li Shu-Bo Wan Biotechnology Research Center Shandong Academy of Agricultural Sciences Shandong Provincial Key Laboratory of Crop Genetic Improvement Ecology and Physiology College of Life Sciences State Key Laboratory of Crop BiologyShandong Agricultural University

In this study, we investigated the effects of exogenous calcium nitrate on photoinhibition and thylakoid protein level in peanut plants under heat （40 ℃） and high irradiance （HI）（1,200 mmol/m2 per s） stress. Compared with control seedlings （cultivated in 0 mmol/L Ca（NO3）2 medium）, the maximal photochemical efficiency of photosystem ii （PSii） in Ca2t‐treated plants showed a slight decrease after 5 h stress, accompanied by lower degree of PSii closure （1‐qP）, higher non‐photochemical quenching, and lower level of membrane damage. Ca2t inhibitors were used to analyze the varieties of antioxidant enzymes activity and PSii proteins. These results indicated that Ca2t could protect the subunits of PSii reaction centers from photoinhibition by reducing the generation of reactive oxygen species. In the presence of both ethyleneglycol‐bis（2‐aminoethylether）‐tetraacetic acid and ascorbic acid （AsA）, the net degradation of the damaged D1 protein was faster than that only treated with AsA. Our previous study showed that either the transcriptional or the translational level of calmodulin was obviously higher in Ca2t‐treated plants. These results suggested that, under＆amp;nbsp;heat and HI stress, the Ca2t signal transduction pathway can al eviate the photoinhibition through regulating the protein repair process besides an enhanced capacity for scavenging reactive oxygen species.

关键词： Calcium D1 protein heat and high irradiance stress peanut photosystem ii

Assembly of CdTe Quantum Dots and photosystem ii Multi- layer Films with Enhanced Photocurrent

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Chinese Journal of Chemistry 2017年第6期35卷 881-885页

作者： Peng Cai Yi Jia Xiyun Feng Jiao Li Junbai Li Beijing National Laboratory for Molecule Sciences CAS Key Lab of Colloid lnterface and Chemical Thermody- namics Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China Tobacco Research Institute of Chinese Academy of Agricultural Sciences Qingdao Shandong 266101 China

photosystem ii （PSii） is a photoactive protein that can drive water oxidation under light irradiation. Recently, PSii has been broadly investigated with the high demand on the bioenergy. Here, we demonstrate a facile approach for the fabrication of a photoactive electrode by the integration of PSii with quantum dots （QDs）/polyelectrolyte multilayers. The assembled QDs and PSii film with a polyelectrolyte based substrate via layer-by-layer assembly can remain the photoactivity of the PSii and broaden the absorption spectrum of PSii to produce a high photocur- rent yield. The co-assembly exhibits an obviously enhanced photocurrent under UV light irradiation. The proposed strategy can be considered for the reference and usage of PSii toward the solar energy conversion.

关键词： photosystem ii quantum dots solar energy conversion layer-by-layer assembly energy transfer

Roles of manganese in photosystem ii dynamics to irradiations and temperatures

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Frontiers in Biology 2013年第3期8卷 312-322页

作者： Xuejing HOU Harvey J. M. HOU Department of Chemistry and Biochemistry University of Massachusetts Dartmouth North Dartmouth MA 02747 USA Department of Physical Sciences Alabama State University Montgomery AL 36104 USA

The most amazing chemistry is the light-driven water splitting reaction occurred in the oxygen-evolving complex of phototsystem ii in higher plants, green algae, and cyanobacteria. Mn, in the form of Mn4CaOs cluster in photosystem ii, is responsible for the catalytic water splitting reaction as well as plays roles in photosystem ii dynamics to irradiation and temperatures. Manganese hypothesis of UV-initiated photoinhibition as a direct target is established, and thermal inactivation of photosystem ii involves the valence and structural changes of manganese. Recent progresses in understanding the roles of manganese in photoinhibition especially under UV light and in thermal inactivation including elevated temperatures using synthetic models and native PS ii complexes are summarized and evaluated. Potential problems and possible solutions are discussed and presented.

关键词： photosynthesis manganese photosystem ii irradiation temperature stress

Elucidating the Molecular Mechanism of Dynamic Photodamage of photosystem ii Membrane Protein Complex by Integrated Proteomics Strategy

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CCS Chemistry 2022年第1期4卷 182-193页

作者： Ye Zhou Zheyi Liu Mingdong Yao Jun Chen Yanan Xiao Guangye Han Jian-Ren Shen Fangjun Wang CAS Key Laboratory of Separation Sciences for Analytical Chemistry Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023 State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023 Key Laboratory of Systems Bioengineering Ministry of EducationTianjin UniversityTianjin 300072 Science and Technology on Surface Physics and Chemistry Laboratory Jiangyou 621908 University of Chinese Academy of Sciences Beijing 100049 Photosynthesis Research Center Key Laboratory of PhotobiologyInstitute of BotanyChinese Academy of SciencesBeijing 100093 Research Institute for Interdisciplinary Science Graduate School of Natural Science and TechnologyOkayama UniversityOkayama 700-8530

photosystem ii(PSii),as a multiple-subunit chloroplast membrane-associated pigment-protein complex on the thylakoid membrane,is a primary target of light-induced ***,the overall molecular details of the conformation and composition dynamics of PSii photodamage are still *** this study,we investigated systematically the dynamic conformation,degradation,and oxidation processes of PSii photodamage by integrating chemical cross-linking and top-down proteomics strategies.

关键词： photosystem ii dynamic photodamage chemical cross-linking top-down proteomics mass spectrometry

Characterization of photosystem ii in Salt-Stressed Cyanobacterial Spirulina Platensis Cells

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Characterization of Photosystem II in Salt-Stressed Cyanobac...

Effects of drought treatment on photosystemⅡactivity in the ephemeral plant Erodium oxyrhinchum

中国植物生理学会第十次会员代表大会暨全国学术年会

作者： Hongmei Gong2, Yunlai Tang, Jia Wang, Xiaogang Wen1, Lixin Zhang1, Congming Lu1* 1Photosynthesis Research Center, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China 2Institute of Resource and Environment, Henan Polytechnic University,Jiaozuo, 454000, China

＜正＞PSii activity was inhibited after Spirulina platensis cells were incubated with different salt concentrations（0–0.8MNaCl） for 12 h. Flash-induced fluorescence kinetics showed that in the absence of DCMU, the ... 详细信息

关键词： Chlorophyll fluorescence photosystem ii PsbO protein Salt stress Spirulina platensis Thermoluminescence.

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Journal of Arid Land 2023年第6期15卷 724-739页

作者： CHEN Yingying LIN Yajun ZHOU Xiaobing ZHANG Jing YANG Chunhong ZHANG Yuanming State Key Laboratory of Desert and Oasis Ecology/Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Plant Resources and Beijing Botanical Garden Institute of BotanyChinese Academy of SciencesBeijing 100093China Zhejiang Lab Hangzhou 311121China

Drought is a critical limiting factor affecting the growth and development of plants in arid and semi-arid ***,one of the most important physiological processes of plants,can be significantly inhibited by ***Ⅱ(PSⅡ)is considered the main attack target when photosynthesis is affected by *** clarify how PSⅡcomponents of the ephemeral plant Erodium oxyrhinchum(grown in the Gurbantunggut Desert,China)respond to drought treatment,we evaluated the functional activity of PSii by determining chlorophyll fluorescence and gas exchange parameters under different drought treatment levels(control(400 mL),moderate drought(200 mL),and severe drought(100 m L)).Under moderate drought treatment,significant decreases were found in net photosynthetic rate(Pn),effective quantum yield of PSii(Y(Ⅱ)),relative electron transfer rate of PSii(rETR(Ⅱ)),oxygen-releasing complex,probability of an absorbed exciton moving an electron into the electron transport chain beyond primary quinone receptor Q_(A)-(Φ(E_(o))),probability of a trapped exciton moving an electron into the electron transport chain beyond primary quinone receptor Q_(A)-(ψ(E_(o))),and performance index of PSⅡ(PI_(abs)).Compared to control treatment,marked increases were observed in water use efficiency(WUE),relative variable fluorescence at the J step(V_(J)),initial fluorescence(F_(o)),and dissipated energy per active reaction center(DI_(o)/RC)under moderate drought treatment,but there were no substantial changes in semi-saturated light intensity(I_(K)),active reaction centers per cross-section(RC/CS),and total performance index of PSii and PSI(PI_(total),where PSI is the photosystemⅠ).The changes of the above parameters under severe drought treatment were more significant than those under moderate drought *** addition,severe drought treatment significantly increased the absorbed energy per active reaction center(ABS/RC)and trapping energy per active reaction center(TR_(o)/RC)but dec

关键词： chlorophyll fluorescence drought treatment electron transport photosynthesis photosystem ii Erodium oxyrhinchum Gurbantunggut Desert

Changes in Thermostability of photosystem Ⅱ and Leaf Lipid Composition of Rice Mutant with Deficiency of Light-harvesting Chlorophyll a/b Protein Complexes

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Journal of Integrative Plant Biology 2007年第4期49卷 515-522页

作者： Yunlai Tang Mei Chen Yinong Xu Tingyun Kuang College of Life Science and Engineering Southwest University of Science and Technology Mianyang 621000 China Photosynthesis Research Center Institute of Botany the Chinese Academy of Sciences Beijing 100093 China

We studied the difference in thermostability of photosystem Ⅱ （PSii） and leaf lipid composition between a T-DNA insertion mutant rice （Oryza sativa L.） VG28 and its wild type Zhonghuau. Native green gel and SDS-PAGE electrophoreses revealed that the mutant VG28 lacked all light-harvesting chlorophyll a/b protein complexes. Both the mutant and wild type were sensitive to high temperatures, and the maximal efficiency of PSii photochemistry （FJ Fm） and oxygen-evolving activity of PSii in leaves significantly decreased with increasing temperature. However, the PSii activity of the mutant was markedly more sensitive to high temperatures than that of the wild type. Lipid composition analysis showed that the mutant had less phosphatidylglycerol and sulfoquinovosyl diacylglycerol compared with the wild type. Fatty acid analysis revealed that the mutant had an obvious decrease in the content of 16：1t and a marked increase in the content of 18：3 compared with the wild type. The effects of lipid composition and unsaturation of membrane lipids on the thermostability of PSii are discussed.

关键词： high temperature lipid composition light-harvesting a/b protein complexes photosystem ii rice.

Reduced salinity interacts with ultraviolet radiation to alter photosystem Ⅱ function in diatom Skeletonema costatum

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Journal of Oceanology and Limnology 2022年第4期40卷 1615-1627页

作者： Shasha ZANG Fang YAN Daode YU Jingjing SONG Lei WANG Zhiguang XU Hongyan WU College of Life Science Ludong UniversityYantai 264025China Marine Science Research Institute of Shandong Province Qingdao 266104China Key Laboratory of Marine Biotechnology in Universities of Shandong(Ludong University) Yantai 264025China

To investigate the effect of reduced salinity on diatoms’ capacity to cope with changing ultraviolet radiation(U VR) and photosynthetically active radiation(PAR),Skeletonema costatum was grown in a range of salinity(15,25,and 35).The photo system Ⅱ(PSⅡ) function was analyzed by increasing PAR and UVR to mimic a mixing event in turbulent *** re sults show that high UVR exposure significantly reduced PSii activity,especially in cells grown at low ***,but not salinity,stimulated the ’removal’ rate of PSii protein *** alone,in the range of 15 to 35,did not regulate PSⅡ acceptor region;however,the low salinity+UVR treatment decreased the energy flux for electron transport per PSⅡ reaction center in *** showed that low salinity exacerbated the damaging effect of UVR on PSⅡ function in *** by suppressing Psb A protein synthe sis and modifying the photochemistry of PSⅡ.Although higher catalase(CAT) activity and NPQs were induced,they were unable to prevent the combined damage effect of low salinity+*** findings indicate that reduced salinity and increased UVR potentially affect the abundance and distribution of *** with the escalation of climate disturbances.

关键词： diatom ultraviolet radiation(UVR) photoinactivation photosystem ii

Blue light is more essential than red light for maintaining the activities of photosystem Ⅱ and Ⅰ and photosynthetic electron transport capacity in cucumber leaves

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Journal of Integrative Agriculture 2016年第1期15卷 87-100页

作者： MIAO Yan-xiu W ANG Xiao-zhuo G AO Li-hong C HEN Qing-yun QU Mei Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops College of Agriculture and Biotechnology China Agricultural UniversityBeijing 100193P.R.China

Blue and red lights differently regulate leaf photosynthesis. Previous studies indicated that plants under blue light generally exhibit better photosynthetic characteristics than those under red light. However, the regulation mechanism of related photosynthesis characteristics remains largely unclear. Here, four light qualities treatments （300 μmol m-2 s-1） including white fluorescent light （FL）, blue monochromatic light （B, 440 nm）, red monochromatic light （R, 660 nm）, and a combination of red and blue light （RB, R：B=8：1） were carried out to investigate their effects on the activity of photosystem ii （PSii） and photosystem I （PSI）, and photosynthetic electron transport capacity in the leaves of cucumber （Cucumis sativus L.） seedlings. The results showed that compared to the FL treatment, the R treatment significantly limited electron transport rate in PSii （ETR11） and in PSI （ETR1） by 79.4 and 66.3%, respectively, increased non-light induced non-photochemical quenching in PSii （q^No） and limitation of donor side in PSI （φND） and reduced most JIP-test parameters, suggesting that the R treatment induced suboptimal activity of photosystems and inhibited electron transport from PSii donor side up to PSI. However, these suppressions were effectively alleviated by blue light addition （RB）. Compared with the R treatment, the RB treatment significantly increased ETR, and ETR1 by 176.9 and 127.0%, respectively, promoted photosystems activity and enhanced linear electron transport by elevating electron transport from QA to PSI. The B treatment plants exhibited normal photosystems activity and photosynthetic electron transport capacity similar to that of the FL treatment. It was concluded that blue light is more essential than red light for normal photosynthesis by mediating photosystems activity and photosynthetic electron transport capacity.

关键词： cucumber photosystem ii photosystem I electron transport