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Effect of long-term doubled CO_2 on chlorophyll-protein complexes of leaves of soybean (Glycine max L.) and millet (Setaria italica)

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chinese Science Bulletin 1997年第16期42卷 1403-1407页

作者： WANG Kebin, LOU shiqing, ZHAO Fuhong, DAI Yunling and kuang tingyuninstitute of {4.,{4., beijing 100093, China Institute of botany Chinese Academy of Sciences Beijing China

OWING to the burning of fossil fuels, cutting down trees in forests, etc., the global

关键词： doubled CO2 concentration photosynthesis chlorophyll-protein complex photosystem Ⅱ light-harvesting chlorophyll a/b-protein (LHC Ⅱ ).

Mg^(2+)-induced LHC Ⅱ aggregation in thylakoid membrane

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chinese Science Bulletin 1999年第10期44卷 916-919页

作者： wen xiaogang, lin shiqing and kuang tingyuninstitute of botany , chinese academy of sciences , beijing 100093, China

Mg2+-induced changes in 77K fluorescence spectra of wheat thylakoid membranes were analyzed by a Gaussian deconvolution program. All spectra were fitted well with 7 Gaussian sub-bands. The sub-band areas for the LHC Ⅱ macroaggregate (F699) and PS Ⅱ (F685and F695) were increased and those for the LHC Ⅱ trimer (F681) and PS Ⅰ (F729 and F74.) were decreased by Mg2+ . Moreover, it was found that the sub-band area ratio f699 over F681 was dramatically enhanced by Mg2+ by 1.72 times. It was concluded that the LHC Ⅱ trimer in thylakoid membranes could be aggregated and transformed into its macroaggregate by Mg2+ on a large scale. The possible implication of the Mg2+-induced LHC Ⅱ aggregation was also discussed.

关键词： LHCⅡ aggregation Mg2+ fluorescence spectra deconvolution.

罗藦科马利筋亚科马利筋族植物C_(21)甾类成分研究进展

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天然产物研究与开发 1999年第5期11卷 99-108页

作者：张援虎温远影匡延云中国科学院植物研究所植化室北京100093

本文综述了 :到目前为止 ,从马利筋族植物中发现的 C2 1甾类成分及其分布 ,并介绍了一些化合物的药理作用。

关键词：马利筋族 C21甾类抗癫痫抗肿瘤抗肝炎

粤东河源盆地的深部构造、沉积序列与盆地演化

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地球学报 2024年第3期45卷 291-308页

作者：张敏李海龙唐灵祁士华旷健王文张金龙广东省有色金属地质局九三五队广东惠州516001 中国地质科学院北京100037 中国地质大学(武汉)生物地质与环境地质国家重点实验室湖北武汉430074

粤东河源盆地是东南沿海规模较大的晚中生代—新生代陆相盆地之一,发育有较为完整的晚白垩世—新近纪地层。研究该盆地的深部构造、控盆断裂、沉积序列和盆地的形成发展,对于认识东南沿海晚中生代—新近纪的大地构造演化有重要意义。通... 详细信息

粤东河源盆地是东南沿海规模较大的晚中生代—新生代陆相盆地之一,发育有较为完整的晚白垩世—新近纪地层。研究该盆地的深部构造、控盆断裂、沉积序列和盆地的形成发展,对于认识东南沿海晚中生代—新近纪的大地构造演化有重要意义。通过对野外地质调查、地球物理反射剖面和约两千米的地质科学钻探等数据资料的综合研究,查明了河源盆地为中生代—新生代沉积断陷盆地,地层结构清晰,沉积基底为早古生代地层,并建立了该盆地晚白垩世—新近纪的三阶段沉积序列;该盆地发育渐新世的火山岩,揭示了控盆边界断裂及内部构造发育特征,暗示了原型盆地的破坏发生于晚新生代:即盆地南北两侧紫金—博罗逆冲断层和河源断裂带在晚古近纪—新近纪强烈地改造了原型盆地;基于以上认识,初步恢复了河源盆地的形成演化历史,构建了河源盆地沉积序列-构造演化模式。

关键词：河源盆地沉积序列反射地震构造演化控盆断裂科学钻探东南沿海

维普期刊数据库博看期刊

Distribution of elements in needles of Pinus massoniana （Lamb.） was uneven and affected by needle age

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Distribution of elements in needles of Pinus massoniana （La...

Two-dimensional crystallization of photosystem I chlorophyll a/b protein complex from cucumber

中国生态学会2006学术年会

作者： Yuan-wen kuang~(1,2) Da-Zhi wen~1 Guo-Yi ZHOU~1 Shi-Zhong LIU~1 (1 Institute of Ecology,South China Botanical Garden,chinese {4. of sciences,Guangzhou 510650,China 2 Graduate School of{4.,beijing 100039,China)

＜正＞Most studies usually used the whole needle for air pollution monitoring;However,the ap- pearance of the visible injuries suggested that the high concentration of toxic pollutants associated with injury symptoms occurred only in particular parts of needles,and few work has been conduc- ted to describe the differences in chemical concentration among different parts of ***

关键词： Element distribution Needle sections Pearl River Delta Pinus massoniana

来源： cnki会议评论

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chinese Science Bulletin 1997年第7期42卷 597-601页

作者： LIU Zheng SUI Senfang WANG Shaoxiong LOU shiqing WANG Kefen ZHAO Fuhong kuang Tingyun Department of Biological sciences and Biotechnology Tsinghua Univcrsity Beijing China Institute of botany Chinese Academy of Sciences Beijing China

THE photosystem Ⅱ light-harvesting chlorophyll a/b protein complex (LHC Ⅱ) is a kind of integral membrane protein complex in the thylakoid membranes of chloroplasts from higher plants and green algae, and its most i... 详细信息

关键词： photosystem n light-harvesting chlorophyll a/b protein complex (LHC Ⅱ) two-dimensional crystallization electron crystallography biological diversity.

Acidity and conductivity of Pinus massoniana bark as indicators to atmospheric acid deposition in Guangdong, China

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Journal of Environmental sciences 2006年第5期18卷 916-920页

作者： kuang Yuan-wen ZHOU Guo-yi wen Da-zhi LIU Shi-zhong Institute of Ecology South China Botanical Garden＇ Chinese Academy of Sciences Guangzhou 510650 China Graduate School of the chinese academy of sciences Beijing 100039 China

Barks of Pinus massoniana collected from two polluted sites, Qujiang and Xiqiaoshan, and from the relatively clean site Dinghushan were used to evaluate the pollution indication by the determination of their acidity and conductivity. The acidity of the inner and outer barks from the polluted sites was significantly higher than those from the clean site, suggesting that the acidity of the bark occurred in concurrent with the air pollution. The significant lower pH values of the outer bark than the inner bark collected from all sites indicated that the outer bark was more sensitive than the inner bark in response to acid pollution, implying that the outer bark is more preferable when used as indication of atmospheric acid pollution. The conductivities of the inner barks differed significantly among the three sites, with higher values at the clean site. However, the significant differences were not observed among these sites. Furthermore, the pH values for the inner and outer barks were not correlated with the conductivity, which did not coincide with some other studies.

关键词： acidity conductivity inner bark outer bark Pinus massoniana

Concentrations of heavy metals and polycyclic aromatic hydrocarbons in needles of Masson pine (Pinus massoniana L.) growing nearby different industrial sources

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Journal of Environmental sciences 2010年第7期22卷 1006-1013页

作者： Fangfang Sun Dazhi wen Yuanwen kuang Jiong Li Jianli Li Weidong Zuo South China Botanical Garden Chinese Academy of Sciences Guangzhou 510650 China Graduate University of chinese academy of sciences Beijing 100049 China Pearl River Delta Research Center of Environmental Pollution and Control Chinese Academy of Sciences Guangzhou 510640 China Agriculture and Forestry Technology Extension Centre of Nanhai District Guangdong 528222 China

Emissions from industrial activities pose a serious threat to human health and impose the need for monitoring both inorganic and organic pollutants in industrial areas. We selected Masson pine （Pinus massoniana L.） as potential biomonitor and collected the current （C） and previous year （C＋ 1） needles from three industrial sites dominated by petrochemical, ceramics manufacturing, and iron and steel smelting plants and one remote site to determine heavy metals （Cu, Cd, Pb, Zn, Cr, Ni and Co） and polycyclic aromatic hydrocarbons （PAHs） in unwashed and water-washed needles. Both unwashed and washed C＋ 1 needles showed generally higher concentrations of heavy metals and PAHs than C needles, although the washed needles more clearly spotlighted the accumulation effect of PAHs over exposure time. Water-washing resulted in a significant decrease in needle PAH concentrations with more significant effects shown in C needles. By contrast, needle heavy metal concentrations were much less affected by washing. Although heavy metals and PAHs might differ in adsorption and uptake strategies, their higher concentrations in the needles at the industrial sites indicated conspicuous contamination due to industrial emissions there. The PAH distribution patterns in pine needles accorded with the real types of energy consumption in the study sites and were efficiently used for pinpointing local pollutant sources.

关键词： biomonitoring needle age polycyclic aromatic hydrocarbons water-washing

Insignin A, A Novel C_21-Steroidal Aglycone from Biondia insignis

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chinese Chemical Letters 2000年第12期11卷 1065-1068页

作者： Yuan Hu ZHANG Yue Mao SHEN Yuan Ying wen Ting Yun kuang Laboratory of Phytochemistry and Department of Plant Biotechnology Kunming Institute of BotanyChinese Academy of SciencesKunming 650204 Laboratory of Phytochemistry Institute of BotanyChinese Academy of SciencesBeijing 100093

Insignin A, a new C21-steroidal aglycone having the rare 15,16-seco pregnane skeleton was isolated from the acidic hydrolysis part of the 95% EtOH extract of Biondia insignis. It's structure was identified to be 15R,... 详细信息

关键词： Asclepiadaceae Biondia insignis C21-steroidal aglycone insignin A<