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Functional response of the fungus Hirsutella rhossiliensis to the nematode, Heterodera glycines

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Science China(Life Sciences) 2015年第7期58卷 704-712页

作者： SHU Chi LAI YiLing YANG EnCe CHEN SenYu xiang meichun LIU XingZhong State Key Laboratory of Mycology Institute of Microbiology Chinese Academy of Sciences University of Chinese Academy of Sciences Southern Research and Outreach Center University of Minnesota

Functional response is a key index in determining the population fluctuation in predation. However, the lack of operable research system limits the studies on functional response of fungal predators. Hirsutella rhossiliensis is a dominant parasite of the soybean cyst nematode, Heterodera glycines. In a soil microcosm bioassay, we determined fungal biomass at different days within 21 days after inoculation, and parasitism rate of H. glycines by the fungus was determined. The functional response of H. rhossiliensis to H. glycines was established and found to be Holling＇s type Ill, which was influenced by mycelial densities. Meanwhile, we conducted anti-fungal analysis of metabolic fractions extracted from H. rhossiliensis to explain the potential mechanism of the intraspecific competition illustrated by functional response. The result of anti-fungal experiments indicated that the fungal predators had more complicated interaction at population level than expected, which might be regulated by self-inhibition metabolite（s）. This study was the first functional response study of fungal predators in microcosm. With the in- creasing recognition of emerging fungal threats to animal, plant, and ecosystem health, the methodologies and hypotheses proposed in this study might inspire further research in fungal ecology.

关键词： fungal predator predation index self-inhibition composition soybean cyst nematode

Microbiota analysis revealed vertical transmission and microbial adjusting function of symbiotic fungus in the attelabid weevil fungiculture

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Science China(Life Sciences) 2019年第12期62卷 1717-1721页

作者： Bin Lin Lin Wang Muzammi Hussain Xiaoling Zhang Jianqing Tian Sha Qi Xingzhong Liu meichun xiang State Key Laboratory of Mycology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China Institute of Apicultural Research Chinese Academy of Agriculture SciencesBeijing 100093China University of Chinese Academy of Sciences Beijing 100049China

Dear Editor,Microbial symbionts are crucial participants in the life history of fungus-farming insects (Mueller et al., 2005;Youngsteadt, 2008). The attelabid weevil (Euops chinensis)feeding on Fallopia japonica in southern China, has evolved a special proto-farming bipartite symbiosis with the fungus(Penicillium herquei), which produces antibiotic (+)-scleroderolide in the leaf-rolls ("cradle" for offspring development) to protect the offspring from potential microbial parasites and pathogens (Sakurai, 1985;Wang et al., 2015).

关键词： weevil culture fungus

Two-dimensional porous carbon derived from pollen with enlarged interlayer distance enhanced electrocatalytic oxidation of n-valeraldehyde to octane

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Nano Research 2024年第5期17卷 3455-3461页

作者： meichun Qin Chaolong Liu Shouhen Xu Jianguo Tang Institute of Hybrid Materials National Center of International Joint Research for Hybrid Materials TechnologyNational Base of International Sci.and Tech.Cooperation on Hybrid MaterialsCollege of Materials Science and EngineeringQingdao UniversityQingdao266071China Department of Pharmaceutics School of PharmacyQingdao UniversityQingdao266071China

Electrocatalytic n-valeraldehyde oxidation reaction was an inexpensive and eco-friendly method to control n-valeraldehyde contamination and produce high value-added ***,low-cost and readily available electrocatalysts with high current efficiency were urgently ***,two-dimensional porous carbon derived from pollen with enlarged interlayer distance was built by alkali activation method,applying in electrocatalytic n-valeraldehyde oxidation *** enlarged interlayer distance was verified by X-ray diffraction(XRD)and high-angle annular dark-field scanning transmission electron microscope(HAADF-STEM).Electrocatalytic experiments consequences showed activated biomass derived carbon possessed a higher electrocatalytic activity and octane selectivity than unactivated *** tests and in situ infrared experiments demonstrated that enlarged interlayer distance was positively correlated with specific surface area of catalysts,large specific surface area provided abundant absorption sites,facilitated the adsorption for n-valeraldehyde,and further promoted the transformation of n-valeraldehyde to *** work also provides a new avenue for creating high-performance electrocatalysts in terms of lattice engineering.

关键词： biomass derived carbon lattice expansion high specific surface area upgrade of n-valeraldehyde

Disparities in the Levels of Whole-Blood Epstein-Barr Virus between the Cancer and Non-Cancer Populations in Zhejiang,China

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Biomedical and Environmental Sciences 2024年第9期37卷 993-1002页

作者： Qingjun Jia meichun Zeng Qi Chen Hangzhou Center for Disease Control and Prevention(Hangzhou Health Supervision Institution) Hangzhou 310021ZhejiangChina Department of Pathology The First Affiliated HospitalCollege of MedicineZhejiang UniversityHangzhou 310003ZhejiangChina

Objective This study aimed to investigate the prevalence of Epstein-Barr virus(EBV)infection in patients with and without *** A total of 26,648 participants who underwent whole-blood EBV DNA(WBEBV)assays between January 1,2020,and August 31,2023,were *** chi-square test was used for categorical data analysis,and R software was used to analyze the differences in EBV DNA load levels and the diagnostic capabilities of *** Positive rates were 10.2%and 25.4%for healthy controls(HC)and patients,*** positivity rate for EBV-associated neoplasms(EN)was the highest at 7.53%,followed by leukemia(Le)at 5.49%.The subgroup analysis showed that the positivity rate for abnormal proliferation or hyperplasia(APH)was 31.9%,followed by 30.5%for *** WBEBV of patients with transplants(TP),especially living-related transplants(LT),was the highest among all *** at diagnosis was used to differentiate between infectious mononucleosis(IM)and chronic active Epstein-Barr virus(CAEBV),with a sensitivity of 67.4%(95%confidence interval[CI]:57.6-75.8)and specificity of 72%(95%CI:63.3-79.3).We conclude that the prevalence of EBV infection is low in the healthy population in this region and that a high EBV load at baseline is more common in LT,IM,and Lymphocyte Leukemia(LL).Conclusion This study used a large-sample survey to characterize the prevalence of whole-blood EBV levels in various diseases,including the stages and *** EBV detection rate was higher in patients with malignant disease than in those with benign *** study provides clinicians with baseline information regarding EBV-associated diseases.

关键词： Epstein-Barr virus Epstein-Barr virus DNA Whole blood Epstein-Barr virus DNA Viral load

Syrosingopine,an anti-hypertensive drug and lactate transporter(MCT1/4)inhibitor,activates hepatic stellate cells and exacerbates liver fibrosis in a mouse model

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Genes & Diseases 2024年第4期11卷 28-30页

作者： meichun Guo Yannian Gou xiangyu Dong Jiamin Zhong Aohua Li Ailing Hao Tongchuan He Jiaming Fan Ministry of Education Key Laboratory of Diagnostic Medicine and the School of Laboratory Diagnostic MedicineChongqing Medical UniversityChongqing 400016China Molecular Oncology Laboratory Department of Orthopaedic Surgery and Rehabilitation MedicineThe University of Chicago Medical CenterChicagoIL 60637USA

Syrosingopine is an anti-hypertensive drug and can cause high intracellular lactate levels and end-product inhibition of lactate dehydrogenase by inhibiting the lactate transporters MCT1 and *** studies have shown that syrosingopine plays an essential role in the process of glycolytic blockade,ATP depletion,and cell death in cancer due to high intracellular levels of lactate.

关键词： hypertensive MCT1 drug

Multifunctional high-performance pressure/proximity/temperature sensors enabled by hybrid resistive-supercapacitive response

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Nano Research 2024年第6期17卷 5604-5613页

作者： Huijun Kong Zhongqian Song meichun Ding Changxiang Shao Jiahui Yu Baolei Wang Weiyan Li Chenwei Li Li Niu School of Chemistry and Pharmaceutical Engineering Shandong First Medical University and Shandong Academy of Medical SciencesJinan 250117China College of Artificial Intelligence and Big Data for Medical Sciences Shandong First Medical University and Shandong Academy of Medical SciencesJinan 250117China School of Chemical Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China

The issue of sensitivity attenuation in high-pressure region has been a persistent concern for pressure-sensitive electronic *** order to tackle such trade-off between sensitivity and linear range,herein,a hybrid piezoresistive-supercapacitive(HRSC)strategy is proposed via introducing a piezoresistive porous aerogel layer between the charge collecting electrodes and iontronic films of the pressure ***,the HRSC-induced impedance regulation and supercapacitive behavior contribute to significant mitigation in sensitivity attenuation,achieving high sensitivity across wide linear range(44.58 kPa^(−1)from 0 to 3 kPa and 23.6 kPa^(−1)from 3 to 12 kPa).The HRSC pressure sensor exhibits a low detection limit of 1 Pa,fast responsiveness(~130 ms),and excellent cycling stability,allowing to detect tiny pressure of air flow,finger bending,and human ***,the HRSC sensor exhibits exceptional perception capabilities for proximity and temperature,broadening its application scenarios in prosthetic perception and electronic *** proposed HRSC strategy may boost the ongoing research on structural design of high-performance and multimodal electronic sensors.

关键词： multimodal sensor pressure sensor high sensitivity MXene/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS)aerogel structural design

Highly efficient three-dimensional solar evaporator for zero liquid discharge desalination of high-salinity brine

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Carbon Energy 2024年第9期6卷 52-65页

作者： meichun Ding Demin Zhao Panpan Feng Baolei Wang Zhenying Duan Rui Wei Yuxi Zhao Chen-Yang Liu Chenwei Li School of Chemistry and Pharmaceutical Engineering Shandong First Medical University&Shandong Academy of Medical SciencesJinanChina Medical Science and Technology Innovation Center Shandong First Medical University&Shandong Academy of Medical SciencesJinanChina Institut de Chimie Radicalaire Aix Marseille UniverisityMarseilleFrance CAS Key Laboratory of Engineering Plastics CAS Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistrythe Chinese Academy of SciencesBeijingChina

Solar-driven interfacial evaporation is a promising technology for freshwater production from seawater,but salt accumulation on the evaporator surface hinders its performance and *** this study,we report a simple and green strategy to fabricate a three-dimensional porous graphene spiral roll(3GSR)that enables highly efficient solar evaporation,salt collection,and water production from near-saturated brine with zero liquid discharge(ZLD).The 3GSR design facilitates energy recovery,radial brine transport,and directional salt crystallization,thereby resulting in an ultrahigh evaporation rate of 9.05 kg m^(-2) h^(-1)6 in 25 wt%brine under 1-sun illumina-tion for 48 h ***,the directional salt crystallization on its outer surface not only enlarges the evaporation area but also achieves an ultrahigh salt collection rate of 2.92 kg m^(-2) h^(-1),thus enabling ZLD ***,3GSR exhibits a record-high water production rate of 3.14 kg m^(-2) h^(-1) in an outdoor *** innovative solution offers a highly efficient and continuous solar desalination method for water production and ZLD brine treatment,which has great implications for addressing global water scarcity and environmental issues arising from brine disposal.

关键词： graphene aerogels graphene composites solar desalination solar-driven interfacial evaporation

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复合微生物菌剂对生菜根结线虫田间防治效果

中国生物防治学报 2017年第6期33卷 826-832页

作者：杨婷呼健洋林斌向梅春中国科学院微生物研究所/真菌学国家重点实验室北京100101 沈阳农业大学植物保护学院沈阳110866

为明确本实验室研发的复合微生物菌肥对食叶类蔬菜根结线虫病的防治效果,以市场购买的复合微生物菌肥、草炭土和10%噻唑膦为对照,在根结线虫病发生严重的生菜大棚进行了田间防治效果试验。结果表明,生菜移栽第44 d时,10%噻唑膦颗粒剂对... 详细信息

为明确本实验室研发的复合微生物菌肥对食叶类蔬菜根结线虫病的防治效果,以市场购买的复合微生物菌肥、草炭土和10%噻唑膦为对照,在根结线虫病发生严重的生菜大棚进行了田间防治效果试验。结果表明,生菜移栽第44 d时,10%噻唑膦颗粒剂对生菜根结线虫的防治效果最佳,达78.2%;本实验室研发的以淡紫紫孢菌Purpureocillium lilacinum、橄榄色链霉菌Streptomyces olivaceus和假格里尼翁苍白杆菌Ochrobactrum pseudogrignonense为主要成分的复合微生物菌剂对生菜根结线虫的防治效果达34.9%,显著优于以淡紫紫孢菌为主要成分的对照复合微生物菌剂和草炭土。同时施用本实验室研发的复合微生物菌剂还能促进生菜生长,鲜重和株高都与空白对照、对照复合微生物菌肥和草炭土有显著差异,产量也显著高于其他处理,增产达47.2%。研究结果表明,本复合微生物菌剂不仅能有效防治生菜根结线虫,还能促进植物生长,提高产量,为生长周期较短的食叶类蔬菜根结线虫的安全有效防治提供了新途径。

关键词：根结线虫复合微生物菌剂生物防治生菜

Phase Transitions and Seepage Characteristics during the Depletion Development of Deep Condensate Gas Reservoirs

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Energy Engineering 2024年第10期121卷 2797-2823页

作者： Qiang Liu Rujun Wang Yintao Zhang Chong Sun meichun Yang Yuliang Su Wendong Wang Ying Shi Zheng Chen Exploration and Development Technology Research and Development Center of Ultra-Deep Complex Oil and Gas Reservoirs Petro China Tarim Oilfield CompanyKorla841000China School of Petroleum Engineering China University of Petroleum(East China)Qingdao266580China

Deep condensate gas reservoirs exhibit highly complex and variable phase behaviors,making it crucial to understand the relationship between fluid phase states and flow *** study conducts a comprehensive analysis of the actual production process of the deep condensate gas well A1 in a certain oilfield in *** phase behavior analysis and CMG software simulations,the study systematically investigates phase transitions,viscosity,and density changes in the gas and liquid phases under different pressure conditions,with a reservoir temperature of 165°*** research covers three crucial depletion stages of the reservoir:single-phase flow,two-phase transition,and two-phase *** findings indicate that retrograde condensation occurs when the pressure falls below the dew point pressure,reachingmaximum condensate liquid production at around *** pressure decreases,gas phase density and viscosity gradually decrease,while liquid phase density and viscosity show an increasing *** the initial single-phase flow stage,maintaining a consistent gas-oil ratio is observed when both bottom-hole and reservoir pressures are higher than the dew point ***,a sudden drop in bottom-hole pressure below the dew point triggers the production of condensate oil,significantly reducing subsequent gas and oil *** the transitional two-phase flow stage,as the bottom-hole pressure further decreases,the reservoir exhibits a complex flow regime with coexisting areas of gas and *** the subsequent two-phase flow stage,when both bottom-hole and reservoir pressures are below the dew point pressure,a significant increase in the gas-oil ratio is *** reservoir manifests a two-phase flow regime,devoid of single-phase gas flow *** lowpressure conditions in deep condensate gas reservoirs,considerations include gas injection,gas lift,and cyclic gas injection and production in surrounding ***,techniques such as hot nitrogen or CO

关键词： Deep condensate gas reservoirs depletion development phase behavior percolation laws dynamic production analysis