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GeoChip-based microbial functions in biogeochemical cycles and their responses to environmental factors in Tengchong hot springs

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Journal of Earth Science 2024年

作者： Muhammad Inayat Ullah Khan Liuqin Huang Geng wu Jian yang Xiangyu Guan Hongchen {2. School of Environmental Studies， china University of Geosciences School of Ocean sciences， china University of Geosciences Beijing State Key Laboratory of Biogeology and Environmental geology， {2. University of Geosciences

Microorganisms actively participate in biogeochemical cycling processes and play a crucial role in maintaining the dynamic balance of hot spring ecosystems. However， the distribution of microbial functional genes and their influencing factors in hot springs remain largely unclear. Therefore， this study investigated the microbial functional genes and their potential for controlling biogeochemical cycles (C， N， S， and P) in the hot Springs of Tengchong， china， using the Geochip method， a functional gene microarray technology. The examined hot springs have very different microbial functional genes. A total of 2.736 gene probe signals were identified， belonging to 567 functional genes and associated with 15 ecological functions， mainly involving stress response， carbon cycle， nitrogen cycle， sulfur cycle， phosphorus cycle and energy processes. The amyA， narG， dsrA and ppx genes were most abundant in carbon， nitrogen， sulfur and phosphorus cycles， respectively， and were significantly correlated with pH， temperature and SO42.. The diversity and abundance of detected gene probes were negatively correlated with temperature. The α-diversity (i.e.， Shannon index) was high at low temperature and low pH. Molecular functional interactions revealed by the gene connectivity levels were negatively correlated with temperature， pH and SO42.. These results suggested that the abundance， diversity and interactions of microbial functional genes were significantly influenced by geochemical parameters?. In addition， some genera possessed functional genes related to carbon， nitrogen， sulfur， and phosphorus cycles and can synergistically control the biogeochemical cycles of carbon， nitrogen， sulfur and phosphorus. These findings provide new insights into the functional potentials of microorganisms to participate in biogeochemical cycles and their responses to environmental factors in hot springs.

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New evidence of deposition under cold climate for the Xieshuihe Formation of the Nanhua System in northwestern Hunan,china

New evidence of deposition under cold climate for the Xieshu...

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中国科学院地质与地球物理研究所2.04学术年会

作者： FENG Lianjun~(1,2.,CHU Xuelei~(1,2.,ZHANG Qirui~1, ZHANG Tonggang~(1,2.,LI He~1 & jiang Neng~(1,2. 1.institute of {2. and geophysics.chinese academy of sciences. beijing 10002..china: 2.Key Laboratory for Mineral Resources Research.chinese academy of sciences.beijing 10002..china

yangjiaping section is located in Hupingshan Town,Shimen County,Hunan *** section has been intensively studied since ***,The paleoclimate during the deposition of the Xieshuihe Formation remains *** on chemical analysis of sedimentary clastic rocks of the unit,the resulting CIA(the chemical index of alteration) values of the Xieshuihe Formation are similar to those of the overlying Gucheng Formation(also called the Dongshanfeng Formation).It indicates that the sedimentary rocks of the Xieshuihe Formation and Gucheng Formation underwent the similar degrees of chemical weathering before ***,the Xieshuihe Formation was also likely to be deposited under a cold climatic condition,which probably belongs to a part of the record of glaciations.

关键词： Neoproterozoic yangjiaping section Xieshuihe Formation Gucheng(Chang’an) glacial epoch chemical weathering paleoclimate

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AB_(2.-type rare earth-based compounds with C-15 structure:Looking for reversible hydrogen storage materials

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Journal of Rare Earths 2024年第5期42卷 803-816,I0001页

作者： Hao Shen Junxian Zhang Valerie Paul-Boncour Ping Li Zhinian Li Yuanfang wu Lijun jiang National Engineering Research Center of Nonferrous Metals Materias and Products for New Energy GRINM Group Co.LtdBeijing00088China Univ Paris Est Creteil CNRSICMPEUMR 71822 rue Henri Dunant94320ThiaisFrance institute for Advanced Materials and Technology University of Science and TechnologyBeijing100083China GRIMAT Engineering institute Co. Ltd.Beijing101407China

AB_(2.-type(A=rare earth,B=transition metal)intermetallic compounds with C15 structure can easily absorb large amount of hydrogen,showing their potential use as hydrogen storage *** crucial problem hindering their application is hydrogen induced amorphization(HIA),which leads to the irreversible hydrogen sorption *** stability of the AB_2.Laves phase compounds,the structural properties,the hydrogenation properties and the controlling factors of HIA are discussed in this *** with other factors,the atomic radii ratio r_A/r_B is the most important one influencing the ***-element substitution is an efficient way to suppress or limit HIA and may enable AB_2.compounds to be suitable for hydrogen storage.

关键词： Rare earth-based AB_2.type compounds Hydrogenation properties Hydrogen induced amorphization Elemental substitution

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Filamentous cyanobacteria fossils and their significance in the Permian-Triassic boundary section at Laolongdong,Chongqing

Filamentous cyanobacteria fossils and their significance in ...

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中国科学院地质与地球物理研究所2.08学术年会

作者： jiang hongxia,{2.+ & CAI ChunFang Key Laboratory of Mineral Resources,institute of geology and geophysics,chinese academy of sciences,beijing 10002.,china

The microbial communities blooming immediately after the end-Permian mass extinction represent abnormally extreme environments,and vary in different *** this study,filamentous cyanobacterial biota was found in the strata after the extinction in the famous Permian-Triassic boundary section at Laolongdong,Chongqing,southwest *** thin sections,the filamentous cyanobacterial fossils are below 1 mm in length,and generally taper to one end,with the widest diameter up to 0.08 *** of them are curved,indicating that they are soft in *** walls are composed of cryptocrystalline to microcrystalline *** filaments have round cross section,and are internally filled with micrites and fine sparry calcites,which indicate that the filaments are originally *** are randomly distributed in the rocks,but in some places,they tend to be distributed in radial *** filamentous organisms are morphologically similar to Rivularia of Rivulariaceae,Cyanobacteria Phylum,but with calcified sheaths,and are tentatively regarded as an indeterminate new species in Rivularia:Rivularia *** are photosynthetic autotrophic,and can survive in dysoxic *** blooming of this organism and the absence of other organisms may indicate that the environment was oxygendeficient and shallow,since this photosynthetic autotrophic organism needed to live within photic zone.

关键词： microbial fossil end-Permian Permian-Triassic boundary cyanobacteria Rivularia

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Comparative Study on the Immunogenicity and Efficacy of Different Post-exposure Intramuscular Rabies Vaccination Regimens in china

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Biomedical and Environmental sciences 2024年第2期37卷 178-186页

作者： SONG Yun HE Ying LU Xue Xin ZHANG Xiao Mei jiang XIAO Lin SONG Qing HUANG Xue Yong MA Hong Xia YU Peng Cheng ZHU wu {2. Henan Provincial Center for Disease Control and Prevention Infectious Disease Prevention and Control InstituteHenan Provincial Key Laboratory of Infectious Disease PathogensZhengzhou 450000HenanChina National institute for Viral Disease Control and Prevention China CDCKey Laboratory of BiosafetyNational Health CommissionBeijing 102206China Shandong Provincial Center for Disease Control and Prevention Jinan 250014ShandongChina Qingdao Chengyang District Center for Disease Control and Prevention Qingdao 266108ShandongChina

Objective This study aimed to compare the current Essen rabies post-exposure immunization schedule(0-3-7-14-2.)in china and the simple 4-dose schedule(0-3-7-14)newly recommended by the World Health Organization in terms of their safety,efficacy,and *** Mice were vaccinated according to different immunization schedules,and blood was collected for detection of rabies virus neutralizing antibodies(RVNAs)on days 14,2.,2.,35,and 12.after the first ***,different groups of mice were injected with lethal doses of the CVS-11 virus on day 0,subjected to different rabies immunization schedules,and assessed for morbidity and death *** a clinical trial,185 rabies-exposed individuals were selected for post-exposure vaccination according to the Essen schedule,and blood was collected for RVNAs detection on days 2.and 42.after the first *** A statistically significant difference in RVNAs between mice in the Essen and 0-3-7-14 schedule groups was observed on the 35th day(P2.,and 0-3-7-2. showed no statistically significant difference(P>0.05)in RVNAs levels at any time *** post-exposure immune protective test showed that the survival rate of mice in the control group was 2.%,whereas that in the immunization groups was 40%.In the clinical trial,the RVNAs positive conversion rates on days 2.(14 days after 4 doses)and 42.14 days after 5 doses)were both 100%,and no significant difference in RVNAs levels was observed(P>0.05).Conclusion The simple 4-dose schedule can produce sufficient RVNAs levels,with no significant effect of a delayed fourth vaccine dose(14–2. d)on the immunization potential.

关键词： Rabies Post-exposure immunization Essen regimen RVNAs

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Dendrimer-induced synthesis of porous organosilica capsules for enzyme encapsulation

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Frontiers of Chemical Science and Engineering 2024年第4期18卷 41-48页

作者： Ziyi Chu Boyu Zhang Zhenhua wu Jiaxu Zhang Yiran Cheng Xueying wang Jiafu Shi Zhongyi {2. School of Environmental Science&Engineering Tianjin UniversityTianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China

Organic matter-induced mineralization is a green and versatile method for synthesizing hybrid nanostructured materials,where the material properties are mainly influenced by the species of natural biomolecules,linear synthetic polymer,or small molecules,limiting their ***,we adopted dendrimer poly(amidoamine)(PAMAM)as the inducer to synthesize organosilica-PAMAM network(OSPN)capsules for mannose isomerase(MIase)encapsulation based on a hard-templating *** structure of OSPN capsules can be precisely regulated by adjusting the molecular weight and concentration of PAMAM,thereby demonstrating a substantial impact on the kinetic behavior of the MIase@OSPN *** MIase@OSPN system was used for catalytic production of mannose from Dfructose.A mannose yield of 2..2.% was obtained,which is higher than that of MIase in organosilica network capsules and similar to that of the free *** overall catalytic efficiency(kcat/Km)of the MIase@OSPN system for the substrate D-fructose was up to 0.556 s^(-1)·mmol^(-1)·***,the MIase@OSPN system showed excellent stability and recyclability,maintaining more than 50% of the yield even after 12.cycles.

关键词： enzyme immobilization enzyme catalysis organosilica networks capsules sugar biosynthesis

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Timing,scale and mechanism of the destruction of the North china Craton

Timing,scale and mechanism of the destruction of the North C...

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中国科学院地质与地球物理研究所第11届（2.11年度）学术年会

作者： ZHU RiXiang~(1*),CHEN Ling~1,wu FuYuan~1 & LIU JunLai~2.1 State Key Laboratory of Lithospheric Evolution,institute of {2. and geophysics,chinese academy of sciences,beijing 10002.,china 2.State Key Laboratory of Geological Processes and Mineral Resources,china University of Geosciences,beijing 100083,china

The North china Craton(NCC) is a classical example of ancient destroyed *** the initiation of the North china Craton Destruction Project by the National Natural Science Foundation of china,numerous studies have been conducted on the timing,scale,and mechanism of this destruction through combined interdisciplinary *** data suggest that the destruction occurred mainly in the eastern NCC,whereas the western NCC was only locally *** sedimentation, magmatic activities and structural deformation after cratonization at -1.8 Ga indicate that the NCC destruction took place in the Mesozoic with a peak age of ca 12. Ma.A global comparison suggests that most cratons on Earth are not destroyed,although they have commonly experienced lithospheric thinning;destruction is likely to occur only when the craton has been disturbed by oceanic *** destruction of the NCC was coincident with globally active plate tectonics and high mantle temperatures during the *** subducted Pacific slab destabilized mantle convection beneath the eastern NCC,which resulted in cratonic destruction in the eastern *** and/or thermal-mechanical-chemical erosion resulted from the destabilization of mantle convection.

关键词： timing scale and mechanism craton destruction North china Craton

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Timing and spatial distribution of mid-Holocene drying over northern china:Response to a southeastward retreat of the East Asian Monsoon

Timing and spatial distribution of mid-Holocene drying over ...

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中国科学院地质与地球物理研究所2.07学术年会

作者： W.Y.jiang and T.S.Liu 1 institute of {2. and geophysics,chinese academy of sciences, beijing.china.

[1]To determine the timing and spatial distribution of mid-Holocene drying over northern china,the mineralogical and oxygen isotopic composition of authigenic carbonate from a closed lake at Bayanchagan,southern Inner Mongolia,were *** analysis and synthesis of the spatial geological data were *** from Lake Bayanchagan show a significant drying at 6000 calendar years(cal years) B.P., indicated by dolomite precipitation and a striking rise inδO *** synthesis of spatial data reveals a zonal distribution for timing of drying over northern china in che *** began at 9000-7000 cal years B.P in deserts of north-central *** 7000-5500 cal years *** extended into the desert-steppe transitional zone and at～4500 cal years B.P into northeastem and south-central china. This pattern indicates that the east Asian summer monsoon has significantly retreated southeastward since the mid-Holocene,which may be related to orbitally induced Northern Hemisphere insolation changes.A retreat of～400-550 km is inferred for the frone of the summer monsoon from 6500 to 4500 cal years B.P.

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Dangling Ligand Enables an Iron Hexa-Coordinated Molecular Catalyst for Water Oxidation by Photocatalysis

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CCS Chemistry 2024年第3期6卷 623-630页

作者： Bing yang Qi Liu Xiang-Zhu Wei Tao Lei Qing-Qing yang Xu-Zhe {2.g Jing-Xin Jian Xin jiang Chen-Ho Tung Li-Zhu wu Key Laboratory of Photochemical Conversion and Optoelectronic Materials New Cornerstone Science LaboratoryTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190 School of Future Technology University of Chinese Academy of SciencesBeijing 100049

Photocatalytic water oxidation reaction by transition metal complexes remains a challenge because of their poor stability under irradiation,especially for earth-abundant metal *** this regard,ironbased water oxidation catalysts are prone to hydrolysis and/or dissociate the ligands to form nanoparticles under a real catalytic ***,we describe a unique hexa-coordinated catalyst 1[Fe^(II)(Py_(3)tacn)Cl_(2.]and its reference 2.Fe^(II)(PhPy_(2.tacn)Cl_(2.]with a dangling pyridyl ligand and a phenyl group,*** anticipated that the dynamically open and close coordination behaviors of the pyridyl ligand enabled balance of the reactivity and stability of catalyst *** our delight,the“open form”of catalyst 1 provided a free coordination site,and the“close form”guaranteed its molecular integrity,resulting in a water oxidation reaction with high efficiency and *** turnover number and turnover frequency values of 2.32.and 60 s^(−1)are the highest known to date among iron-based homogeneous water oxidation systems under visible light irradiation.

关键词： water oxidation photocatalysis homogeneous catalysis iron complexes dangling ligand intermediates characterization

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Regulatory potential of soil available carbon,nitrogen,and functional genes on N_(2.O emissions in two upland plantation systems

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Journal of Integrative Agriculture 2024年第8期23卷 2792-2806页

作者： Peng Xu Mengdie jiang Imran Khan Muhammad Shaaban Hongtao wu Barthelemy Harerimana Ronggui Hu Key Laboratory of Mountain Surface Processes and Ecological Regulation Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610041China College of Resources and Environment Huazhong Agricultural UniversityWuhan 430070China Hubei Collaborative Innovation Centre for Grain Industry College of AgricultureYangtze UniversityJingzhou 434025China College of Agriculture Henan University of Science and TechnologyLuoyang 471000China College of Urban and Environmental sciences Hubei Normal UniversityHuangshi 435002China University of chinese academy of sciences Beijing 100049China

Dynamic nitrification and denitrification processes are affected by changes in soil redox conditions,and they play a vital role in regulating soil N_(2.O emissions in rice-based *** is imperative to understand the influences of different upland crop planting systems on soil N_(2.O *** this study,we focused on two representative rotation systems in Central china:rapeseed–rice(RR)and wheat–rice(WR).We examined the biotic and abiotic processes underlying the impacts of these upland plantings on soil N_(2.O *** results revealed that during the rapeseed-cultivated seasons in the RR rotation system,the average N_(2.O emissions were 1.2.±0.2. and 0.81±0.11 kg N ha^(–1)for the first and second seasons,*** values were comparable to the N_(2.O emissions observed during the first and second wheat-cultivated seasons in the WR rotation system(0.98±0.2. and 0.70±0.04 kg N ha^(–1),respectively).This suggests that upland cultivation has minimal impacts on soil N_(2.O emissions in the two rotation *** positive correlations were found between N_(2.O fluxes and soil ammonium(NH_(4)^(+)),nitrate(NO_(3)^(–)),microbial biomass nitrogen(MBN),and the ratio of soil dissolved organic carbon(DOC)to NO_(3)^(–)in both RR and WR rotation ***,the presence of the AOA-amoA and nirK genes were positively associated with soil N_(2.O fluxes in the RR and WR systems,*** implies that these genes may have different potential roles in facilitating microbial N_(2.O production in various upland plantation *** using a structural equation model,we found that soil moisture,mineral N,MBN,and the AOA-amoA gene accounted for over 50%of the effects on N_(2.O emissions in the RR rotation *** the WR rotation system,soil moisture,mineral N,MBN,and the AOA-amoA and nirK genes had a combined impact of over 70%on N_(2.O *** findings demonstrate the interactive effects of functional genes and soil factors,including

关键词： upland-rice cultivation N_(2.O emission regulatory factors functional genes

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