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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 Jiang 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 China 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 22736 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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A dual-band wireless communication of spoof plasmonic meta-waveguide

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Science China(Information Sciences) 2024年第7期67卷 337-338页

作者： Xinxin GAO geng-Bo wu Ze GU Qian MA Wenyi CUI Tiejun CUI Chihou CHAN State Key Laboratory of Terahertz and Millimeter Waves City University of Hong Kong State Key Laboratory of Millimeter Waves Southeast University Department of Electrical Engineering City University of Hong Kong

The ever-growing demands in wireless communications,computational imaging, and light detection necessitate the capability to freely manipulate electromagnetic waves.Miniaturized and highly integrated devices hold great promise for the future of communications. Spoof plasmonic metamaterials, in particular, have shown potential in creating functional devices and systems due to their ultracompact and low-profile advantages [1–3].

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Cu_(2+1)O/CuO_(x)heterostructures promote the electrosynthesis of C^(2+)products from CO_(2)

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Nano Research 2023年第4期16卷 4698-4705页

作者： Rongbo Sun Cong Wei Zixiang Huang Shuwen Niu Xiao Han Cai Chen Haoran Wang Jia Song Jun-Dong Yi geng wu Dewei Rao Xusheng Zheng Yuen wu Gongming Wang Xun Hong Center of Advanced Nanocatalysis(CAN) Department of Applied ChemistryUniversity of Science and Technology of ChinaHefei 230026China School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013China National Synchrotron Radiation Laboratory(NSRL) University of Science and Technology of ChinaHefei 230026China

Manipulating the oxidation state of Cu catalysts can significantly affect the selectivity and activity of electrocatalytic carbon dioxide reduction(CO_(2)RR).However,the thermodynamically favorable cathodic reduction to metallic states typically leads to catalytic deactivation.Herein,a defect construction strategy is employed to prepare crystalline/amorphous Cu_(2+1)O/CuO_(x)heterostructures(c/a-CuO_(x))with abundant Cu0 and Cuδ+(0<δ<1)sites for CO_(2)RR.The C^(2+)Faradaic efficiency of the heterostructured Cu catalyst is up to 81.3%,with partial current densities of 406.7 mA·cm−2.Significantly,real-time monitoring of the Cu oxidation state evolution by in-situ Raman spectroscopy confirms the stability of Cuδ+species under long-term high current density operation.Density functional theory(DFT)calculations further reveal that the adjacent Cu0 and Cuδ+sites in heterostructured c/a-CuO_(x)can efficiently reduce the energy barrier of CO coupling for C^(2+)products.

关键词： CO_(2)electroreduction C-C coupling heterostructures in-situ Raman manipulation of oxidation states

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Direct detection of a single[4Fe-4S]cluster in a tungsten-containing enzyme:Electrochemical conversion of CO_(2) into formate by formate dehydrogenase

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Carbon Energy 2023年第5期5卷 152-164页

作者： Wenjin Li Yanxin Gao Xuan Sun Lei Wan Haishuo Ji Hang Luo Yao Tian Hao Song geng wu Liyun Zhang State Key Laboratory of Medicinal Chemical Biology College of Life ScienceNankai UniversityTianjinPeople's Republic of China State Key Laboratory of Microbial Metabolism The Joint International Research Laboratory of Metabolic&Developmental SciencesSchool of Life Science and BiotechnologyShanghai Jiao Tong UniversityShanghaiPeople's Republic of China Max Planck Institute for Chemical Energy Conversion Mülheim an der RuhrGermany Frontier Science Center for Synthetic Biology Key Laboratory of Systems BioengineeringSchool of Chemical Engineering and TechnologyTianjin UniversityTianjinPeople's Republic of China

The conversion of CO_(2) into fuels and valuable chemicals is one of the central topics to combat climate change and meet the growing demand for renewable energy.Herein,we show that the formate dehydrogenase from Clostridium ljungdahlii(ClFDH)adsorbed on electrodes displays clear characteristic voltammetric signals that can be assigned to the reduction and oxidation potential of the[4Fe-4S]^(2+/+)cluster under nonturnover conditions.Upon adding substrates,the signals transform into a specific redox center that engages in catalytic electron transport.ClFDH catalyzes rapid and efficient reversible interconversion between CO_(2) and formate in the presence of substrates.The turnover frequency of electrochemical CO_(2) reduction is determined as 1210 s^(-1) at 25℃ and pH 7.0,which can be further enhanced up to 1786 s^(-1) at 50℃.The Faradaic efficiency at−0.6 V(vs.standard hydrogen electrode)is recorded as 99.3%in a 2-h reaction.Inhibition experiments and theoretical modeling disclose interesting pathways for CO_(2) entry,formate exit,and OCN−competition,suggesting an oxidation-state-dependent binding mechanism of catalysis.Our results provide a different perspective for understanding the catalytic mechanism of FDH and original insights into the design of synthetic catalysts.

关键词： bioelectrocatalysis biofuel CO_(2)conversion formate dehydrogenase iron-sulfur cluster

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A critical review of mineral-microbe interaction and co-evolution:mechanisms and applications

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National Science Review 2022年第10期9卷 209-229页

作者： Hailiang Dong Liuqin Huang Linduo Zhao Qiang Zeng Xiaolei Liu Yizhi Sheng Liang Shi geng wu Hongchen Jiang Fangru Li Li Zhang Dongyi Guo Gaoyuan Li Weiguo Hou Hongyu Chen Center for Geomicrobiology and Biogeochemistry Research State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences Illinois Sustainable Technology Center Illinois State Water Survey University of Illinois at Urbana-Champaign Department of Geology and Environmental Earth Science Miami University

Mineral-microbe interactions play important roles in environmental change,biogeochemical cycling of elements and formation of ore deposits.Minerals provide both beneficial(physical and chemical protection,nutrients,and energy) and detrimental(toxic substances and oxidative pressure) effects to microbes,resulting in mineral-specific microbial colonization.Microbes impact dissolution,transformation and precipitation of minerals through their activity,resulting in either genetically controlled or metabolism-induced biomineralization.Through these interactions,minerals and microbes co-evolve through Earth history.Mineral-microbe interactions typically occur at microscopic scale but the effect is often manifested at global scale.Despite advances achieved through decades of research,major questions remain.Four areas are identified for future research:integrating mineral and microbial ecology,establishing mineral biosignatures,linking laboratory mechanistic investigation to field observation,and manipulating mineral-microbe interactions for the benefit of humankind.

关键词： biomineralization co-evolution interactions microbe mineral nutrients

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Co-transplantation of Schwann cells and bone marrow stromal cells versus single cell transplantation on repairing hemisected spinal cord injury of rats

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Neural Regeneration Research 2010年第11期5卷 805-813页

作者： Jifei Zhang geng wu Fusheng Zhao Xiudong Jin Department of Histology and Embryology Mudanjiang Medical College Mudanjiang 157011 Heilongjiang Province China Clinical Skills Training Center Mudanjiang Medical College Mudanjiang 157011 Heilongjiang Province China Deoartment of Phvsiology. Mudanjiang Medical Collecle. Mudaniiancl 157011 Heilongjiancl Province China

BACKGROUND： Bone marrow stromal cells （BMSCs） or Schwann cells （SCs） transplantation alone can treat spinal cord injury. However, the transplantation either cell-type alone has disadvantages. The co-transplantation of both cells may benefit structural reconstruction and functional recovery of spinal nerves. OBJECTIVE： To verify spinal cord repair and related mechanisms after co-transplantation of BMSCs and SCs in a rat model of hemisected spinal cord injury. DESIGN, TIME AND SETTING： A randomized, controlled, animal experiment was performed at the Department of Histology and Embryology, Mudanjiang Medical College from January 2008 to May 2009. MATERIALS： Rabbit anti-S-100, glial fibrillary acidic protein, neuron specific enolase and neurofilament-200 monoclonal antibodies were purchased from Sigma, USA. METHODS： A total of 100 Wistar rats were used in a model of hemisected spinal cord injury. The rats were randomly assigned to vehicle control, SCs transplantation, BMSCs transplantation, and co-transplantation groups; 25 rats per group. At 1 week after modeling, SCs or BMSCs cultured in vitro were labeled and injected separately into the hemisected spinal segment of SCs and BMSCs transplantation groups through three injection points [5 μL （1 x 107 cells/mL）] cell suspension in each point）. In addition, a 15 μL 1 × 10^7 cells/mL SCs suspension and a 15 μL 1 × 10^7 cells/mL BMSC suspension were injected into co-transplantation group by the above method. MAIN OUTCOME MEASURES： The Basso-Beattie-Bresnahan （BBB） locomotor rating scale and somatosensory evoked potential （SEP） tests were used to assess the functional recovery of rat hind limbs following operation. Structural repair of injured nerve tissue was observed by light microscopy, electron microscopy, immunohistochemistry, and magnetic resonance imaging （MRI）. In vivo differentiation, survival and migration of BMSCs were evaluated by immunofluorescence. RESULTS： BBB scores were significantly greater in all three transplantation groups compared with vehicle contro

关键词： bone marrow stromal cells Schwann cells co-transplantation spinal cord injury neural regeneration

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Primary assessment of the diversity of Omicron sublineages and the epidemiologic features of autumn/winter 2022 COVID-19 wave in Chinese mainland

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Frontiers of Medicine 2023年第4期17卷 758-767页

作者： Gang Lu Yun Ling Minghao Jiang Yun Tan Dong Wei Lu Jiang Shuting Yu Fangying Jiang Shuai Wang Yao Dai Jinzeng Wang geng wu Xinxin Zhang Guoyu Meng Shengyue Wang Feng Liu Xiaohong Fan Saijuan Chen Shanghai Institute of Hematology National Research Center for Translational MedicineState Key Laboratory of Medical GenomicsRuijin Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200025China Shanghai Public Health Clinical Center Fudan UniversityShanghai 200083China Department of Infectious Diseases Research Laboratory of Clinical VirologyNational Research Center for Translational MedicineRuijin Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200025China State Key Laboratory of Microbial Metabolism School of Life Sciences and BiotechnologyThe Joint International Research Laboratory of Metabolic and Developmental SciencesShanghai Jiao Tong UniversityShanghai 200240China

With the recent ongoing autumn/winter 2022 COVID-19 wave and the adjustment of public health control measures,there have been widespread SARS-CoV-2 infections in Chinese mainland.Here we have analyzed 369 viral genomes from recently diagnosed COVID-19 patients in Shanghai,identifying a large number of sublineages of the SARS-CoV-2 Omicron family.Phylogenetic analysis,coupled with contact history tracing,revealed simultaneous community transmission of two Omicron sublineages dominating the infections in some areas of China(BA.5.2 mainly in Guangzhou and Shanghai,and BF.7 mainly in Beijing)and two highly infectious sublineages recently imported from abroad(XBB and BQ.1).Publicly available data from August 31 to November 29,2022 indicated an overall severe/critical case rate of 0.035%nationwide,while analysis of 5706 symptomatic patients treated at the Shanghai Public Health Center between September 1 and December 26,2022 showed that 20 cases(0.35%)without comorbidities progressed into severe/critical conditions and 153 cases(2.68%)with COVID-19-exacerbated comorbidities progressed into severe/critical conditions.These observations shall alert healthcare providers to place more resources for the treatment of severe/critical cases.Furthermore,mathematical modeling predicts this autumn/winter wave might pass through major cities in China by the end of the year,whereas some middle and western provinces and rural areas would be hit by the upcoming infection wave in mid-to-late January 2023,and the duration and magnitude of upcoming outbreak could be dramatically enhanced by the extensive travels during the Spring Festival(January 21,2023).Altogether,these preliminary data highlight the needs to allocate resources to early diagnosis and effective treatment of severe cases and the protection of vulnerable population,especially in the rural areas,to ensure the country’s smooth exit from the ongoing pandemic and accelerate socio-economic recovery.

关键词： SARS-CoV-2 COVID-19 Omicron genomic epidemiology

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Co-occurrence of nitrite-dependent anaerobic methane oxidizing and anaerobic ammonia oxidizing bacteria in two Qinghai-Tibetan saline lakes

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Frontiers of Earth Science 2012年第4期6卷 383-391页

作者： Jian YANG Hongchen JIANG geng wu Weiguo HOU Yongjuan SUN Zhongping LAI Hailiang DONG State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences Wuhan 430074 China State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences Beijing 100083 China Qinghai Institute of Salt Lakes Chinese Academy of Sciences Xining 810008 China State Key Laboratory of Cryospheric Sciences Cold and Arid Regions Environmental and Enginee-ring Research Institute Chinese Academy of Sciences Lanzhou 730000 China Department of Geology and Environmental Earth Science Miami University Oxford OH 45056 USA

Nitrite-dependent anaerobic methane-oxidiz- ing （n-damo） bacteria and anaerobic ammonia oxidizing （anammox） bacteria are two groups of microorganisms involved in global carbon and nitrogen cycling. In order to test whether the n-damo and anammox bacteria co-occur in natural saline environments, the DNA and cDNA samples obtained from the surficial sediments of two saline lakes （with salinity of 32 and 84 g/L, respectively） on the Tibetan Plateau were PCR-amplified with the use of anammox- and n-damo-specific primer sets, followed by clone library construction and phylogenetic analysis. DNA and cDNA- based clones affiliated with n-damo and anammox bacteria were successfully retrieved from the two samples, indicating that these two groups of bacteria can co-occur in natural saline environments with salinity as high as 84g/L. Our finding has great implications for our understanding of the global carbon and nitrogen cycle in nature.

关键词： anammox n-damo co-occurrence saline lakes Qinghai-Tibetan Plateau

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NiCo-LDH nanosheets strongly coupled with GO-CNTs as a hybrid electrocatalyst for oxygen evolution reaction

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Nano Research 2021年第12期14卷 4783-4788页

作者： Peiqun Yin geng wu Xiaoqian Wang Shoujie Liu Fangyao Zhou Lei Dai Xin Wang Bo Yang Zhen-Qiang Yu School of Chemistry and Environmental Engineering Institute of Low-dimensional Materials Genome InitiativeShenzhen UniversityShenzhen518060China School of Chemistry and Materials Science Hefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefei230026China School of Biomedical Engineering and Research and Engineering Center of Biomedical Materials Anhui Medical UniversityHefei230032China Key Laboratory for Special Functional Materials of Ministry of Education School of MaterialsHenan UniversityKaifeng475004China Chemistry and Chemical Engineering of Guangdong Laboratory Shantou515063China

The rational fabrication of highly efficient electrocatalysts with low cost toward oxygen evolution reaction(OER)is greatly desired but remains a formidable challenge.In this work,we present a facile and straightforward method of incorporating NiCo-layered double hydroxide(NiCo-LDH)into GO-dispersed CNTs(GO-CNTs)with interconnected configuration.X-ray absorption spectroscopy(XAS)reveals the strong electron interaction between NiCo-LDH and the underlying GO-CNTs substrate,which is supposed to facilitate charge transfer and accelerate the kinetics for OER.By tuning the amount of CNTs,the optimized NiCo-LDH/GO-CNTs composite can achieve a low overpotential of 290 mV at 10 mA·cm^(−2) current density,a small Tafel slope of 66.8 mV·dec^(−1) and robust stability,superior to the pure NiCo-LDH and commercial RuO_(2) in alkaline media.The preeminent oxygen evolution performance is attributed to the synergistic effect stemming from the merits and the intimate electron interaction between LDH and GO-CNTs.This allows NiCo-LDH/GO-CNTs to be potentially applied in an industrial non-noble metal-based water electrolyzer as the anodic catalysts.

关键词： NiCo-LDH/GO-CNTs composite electrocatalysts oxygen evolution intimate electron interaction

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Anisotropic Cu@Cu-BTC core-shell nanostructure for memory device

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Chinese Chemical Letters 2019年第5期30卷 1093-1096页

作者： Yiqi Luo Zhengdong Liu geng wu Guanzhong Wang Tingting Chao Hai Li Juqing Liu Xun Hong Center of Advanced Nanocatalysis(CAN)and Department of Chemistry University of Science and Technology of ChinaHefei 230026China Department of Physics University of Science and Technology of ChinaHefei 230026China Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing Tech UniversityNanjing 211816China

The activity and stability of Cu nanostructures strongly depend on their sizes,morphology and structures.Here we report the preparation of two-dimensional(2 D)Cu@Cu-BTC core-shell nanosheets(NSs).The thickness of the Cu NSs could be tuned to sub-10 nm through a mild etching process,in which the Cu-BTC in situ grow along with the oxidation on the surface of the Cu NSs.This unique strategy can also be extended to synthesize one-dimensional(1 D)Cu@Cu-BTC nanowires(NWs).Furthermore,the obtained Cu@Cu-BTC NSs could be applied as an effective material to the memory device with the write-onceread-many times(WORM)behavior and the high ION/I(OFF)ratio(>2.7×103).

关键词： Copper Anisotropic Core-shell MOF Memory device

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