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Nitrogen deposition enhances the competitive advantage of invasive plant species over common native species through improved resource acquisition and absorption

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Ecological Processes 2024年第04期 3-18页

作者： Chixuan Xiang xiao Wang yanni Chen Lele Liu Mingyan Li Tong Wang Yingkun Sun Haimei Li xiao Guo College of Landscape Architecture and Forestry Qingdao Agricultural University Qingdao Key Laboratory of Ecological Protection and Restoration School of Life Sciences Shandong University Academy of Dongying Efficient Agricultural Technology and Industry on Saline and Alkaline Land in Collaboration with Qingdao Agricultural University

Background Previous studies into the interactions between native and invasive species under nitrogen(N) deposition have often overlooked the presence of co-occurring native species, a factor that could influence the outcomes of interspecific competition. Furthermore, publication bias may lead researchers to focus on rare native species with limited adaptability. In this study, we examined how two levels of N deposition affected the physiological and ecological traits and the interspecies interactions between three invasive and three common native *** N deposition promoted the growth of both invasive and native species. The relative dominance index(RDI) of invasive species was consistently higher than that of native species. Invasive species had an advantage over common native species in using the increased N effectively. The biomass distribution of invasive species was biased toward the aboveground parts, indicating competition for light *** N deposition conferred a stronger competitive advantage to invasive species than to native species, suggesting that the distribution range of invasive species may expand further under increased N deposition.

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Restricted dispersal determines fine-scale spatial genetic structure of Mongolian gerbils

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Current Zoology 2017年第6期63卷 687-691页

作者： Guiming WANG Wei LIU yanni WANG Xinrong WAN Wenqin ZHONG Department of Wildlife Fisheries and Aquaculture Mississippi State University Mail Stop 9690 Mississippi State MS 39762 USA Institute of Zoology Chinese Academy of Sciences State Key Laboratory of Integrated Management of Pest Insects and Rodents 1 Beichen West Road Chaoyang District Beijing 100101 China University of Chinese Academy of Sciences Beijing 100190 China College of Chemistry and Life Sciences Zhejiang Normal University 688 Yingbin Road Jinhua Zhejiang 321004 China

Restricted gene flow may cause positive spatial genetic autocorrelation of animal populations at fine spatial scales. The Mongolian gerbil Meriones unguiculatus is a territorial, social rodent. Territoriality may create social fences to restrict dispersal or gene flow of Mongolian gerbils to a short distance. Restricted dispersal may differentiate fine-scale spatial genetic structure of populations with increasing distances （i.e., isolation by distance [IBD]）. Competition for mates and inbreeding avoidance may result in equal dispersal propensity and subsequently similar spatial genetic autocorrelation between males and females of monogamous gerbils. We genotyped 327 gerbils, live captured from 26 burrow systems on a 9-ha plot in northcentral Inner Mongolia, China, using seven microsateliite loci. Spatial genetic autocorrelation was positive within 80 m and became negative from 80 m to 200 m, suggesting restricted gene flow. Inter-group genetic and geographic distances were related positively, supporting the IBD model. Live trapping data demonstrated equal dispersal propensities of male and female gerbils. Restricted dispersal and social organization may determine fine-scale spatial population genetic structure of social rodents.

关键词： dispersal isolation by distance Meriones unguiculatus microsatellite analysis social rodents spatial geneticautocorrelation.

POST1/C12ORF49 regulates the SREBP pathway by promoting site-1 protease maturation

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Protein & Cell 2021年第4期12卷 279-296页

作者： Jian xiao yanni Xiong Liu-Ting Yang Ju-Qiong Wang Zi-Mu Zhou Le-Wei Dong Xiong-Jie Shi xiaolu Zhao Jie Luo Bao-Liang Song Hubei Key Laboratory of Cell Homeostasis College of Life SciencesFrontier Science Center for Immunology and MetabolismWuhan UniversityWuhan 430072China

Sterol-regulatory element binding proteins(SREBPs)are the key transcriptional regulators of lipid *** activation of SREBP requires translocation of the SREBP precursor from the endoplasmic reticulum to the Golgi,where it is sequentially cleaved by site-1 protease(S1P)and site-2 protease and releases a nuclear form to modulate gene *** search for new genes regulating cholesterol metabolism,we perform a genome-wide CRISPR/Cas9 knockout screen and find that partner of site-1 protease(POSH),encoded by C120RF49,is critically involved in the SREBP *** of POSH decreases the generation of nuclear SREBP and reduces the expression of SREBP target *** binds S1P,which is synthesized as an inactive protease(form A)and becomes fully mature via a two-step autocatalytic process involving forms B/B and C/*** promotes the generation of the functional S1P-C/C from S1P-B/B(canonical cleavage)and,notably,from S1P-A directly(non-canonical cleavage)as *** POSH-mediated S1P activation is also essential for the cleavages of other S1P substrates including ATF6,CREB3 family members and the a/p-subunit precursor of ***,we demonstrate that POSH is a cofactor controlling S1P maturation and plays important roles in lipid homeostasis,unfolded protein response,lipoprotein metabolism and lysosome biogenesis.

关键词： SREBP site-1 protease proteolytic activation unfolded protein response activating transcription factor 6 mannose-6-phosphate

Some New Properties of Morgan-Voyce Polynomials

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Journal of Mathematical Research with Applications 2019年第6期39卷 575-580页

作者： yanni PEI Yi WANG School of Mathematical Sciences Dalian University of Technology

We show that zeros of Morgan-Voyce polynomials are dense in the closed interval[-4, 0]. We show also that coefficients of Morgan-Voyce polynomials are approximately normally distributed and that the coefficient arrays... 详细信息

关键词： Morgan-Voyce polynomial asymptotically normal distribution totally positive matrix

Effective *** inactivation of core-shell ZnO@ZIF-8 photocatalysis under visible light synergize with peroxymonosulfate:Efficiency and mechanism

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Chinese Chemical Letters 2022年第1期33卷 415-423页

作者： yanni Jiang Zhaokun Xiong Jianbo Huang Feng Yan Gang Yao Bo Lai State Key Laboratory of Hydraulics and Mountain River Engineering College of Architecture and EnvironmentSichuan UniversityChengdu 610065China Sino-German Centre for Water and Health Research Sichuan UniversityChengdu 610065China Department of Ultrasound Laboratory of Ultrasound Imaging DrugWest China HospitalSichuan UniversityChengdu 610041China Institute of Environmental Engineering RWTH Aachen UniversityAachen 52072Germany

How to utilize inexhaustible solar light as a means of disinfection technology for its cheap and green remains a *** this work,core-shell ZnO@ZIF-8 was synthesized and used for bacterial inactivation synergizing with peroxymonosulfate(PMS)under visible light *** took 50 min to achieve thorough sterilization for 7.5-log Escherichia coli(***)cells in vis/PMS/ZnO@ZIF-8 system,compared with that 4.5-log reduction completed in vis/PMS/ZnO system under the same *** enhanced photocatalytic disinfection mechanisms of fabricated ZnO@ZIF-8 were investigated by UV-vis diffuse reflectance spectra,electrochemical impedance spectra and Mott-Schottky *** promoted bactericidal efficiency was attributed to higher charge-separation efficiency and stronger oxidation ability of photo-generated ***,it was found that^(1)O_(2)and·OH induced bacterial cell lesion process,and the former was the main active *** external reactive oxygen species(ROS)caused a series of cell wall damage,intercellular ROS up-regulation and genome DNA unwinding,finally resulted in irreversible bacterial death.A two-route mechanism in vis/PMS/ZnO@ZIF-8 system was proposed,in which the generation of^(1)O_(2)was supposed as the product of the oxygen oxidation of photo-generated holes and PMS *** work is expected to provide advanced information about a low-cost water disinfection technology of visible light photocatalysis.

关键词： Bacterial inactivation Photocatalysis Visible light Peroxymonosulfate

Spatiotemporal variability of rain-on-snow events in the arid region of Northwest China

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Journal of Arid Land 2024年第4期16卷 483-499页

作者： YANG Zhiwei CHEN Rensheng LIU Zhangwen ZHAO yanni LIU Yiwen WU Wentong Qilian Alpine Ecology and Hydrology Research Station Key Laboratory of Ecological Safety and Sustainable Development in Arid LandsNorthwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China

Rain-on-snow(ROS)events involve rainfall on snow surfaces,and the occurrence of ROS events can exacerbate water scarcity and ecosystem vulnerability in the arid region of Northwest China(ARNC).In this study,using daily snow depth data and daily meteorological data from 68 meteorological stations provided by the China Meteorological Administration National Meteorological Information Centre,we investigated the spatiotemporal variability of ROS events in the ARNC from 1978 to 2015 and examined the factors affecting these events and possible changes of future ROS events in the *** results showed that ROS events in the ARNC mainly occurred from October to May of the following year and were largely distributed in the Qilian Mountains,Tianshan Mountains,Ili River Valley,Tacheng Prefecture,and Altay Prefecture,with the Ili River Valley,Tacheng City,and Altay Mountains exhibiting the most *** on the intensity of ROS events,the areas with the highest risk of flooding resulting from ROS events in the ARNC were the Tianshan Mountains,Ili River Valley,Tacheng City,and Altay *** number and intensity of ROS events in the ARNC largely increased from 1978 to 2015,mainly influenced by air temperature and the number of rainfall ***,due to the snowpack abundance in areas experiencing frequent ROS events in the ARNC,snowpack changes exerted slight impact on ROS events,which is a temporary ***,elevation imposed lesser impact on ROS events in the ARNC than other *** the ARNC,the start time of rainfall and the end time of snowpack gradually advanced from the spring of the current year to the winter of the previous year,while the end time of rainfall and the start time of snowpack gradually delayed from autumn to *** may lead to more ROS events in winter in the *** results could provide a sound basis for managing water resources and mitigating related disasters caused by ROS events in the ARNC.

关键词： rain-on-snow events snowpack snowmelt climate change Spearman's rank correlation arid region of Northwest China

Synergistic utilization of carbon sources for efficient biosynthesis of N-acetylglucosamine

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Green Chemical Engineering 2023年第2期4卷 233-238页

作者： yanni Pei Yuhan Wang xiaolin Shen Jia Wang Xinxiao Sun Qipeng Yuan State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing100029China

N-acetylglucosamine(GlcNAc)is an amino monosaccharide that has a variety of bioactivities and is widely used in pharmaceutical and food *** of GlcNAc by chitin hydrolysis is limited by the supply of raw materials and encounters the risk of shellfish protein *** efficient biosynthesis of GlcNAc,one challenge is to balance the carbon distribution between growth and ***,we applied the strategy of synergistic carbon utilization,in which glycerol supports cell growth and provides the acetyl group of GlcNAc while glucose serves as the precursor to *** efficiency of GlcNAc production was stepwise improved by blocking the product re-uptake and degradation,strengthening the biosynthetic pathway and synergistically utilizing two carbon *** these efforts,the final strain produced 41.5 g/L GlcNAc with a yield of 0.49 g/g of total carbon *** addition,we also explored the feasibility of using acetate as a cheap carbon source to partly replace *** study provides a promising alternative strategy for sustainable and efficient pro-duction of GlcNAc.

关键词： N-Acetylglucosamine Synergistic carbon utilization Glucose facilitated diffusion system Acetate

Investigating Interaction Between Biochanin A and Human Serum Albumin by Multi-spectroscopic and Molecular Simulation Methods

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Transactions of Tianjin University 2017年第4期23卷 325-333页

作者： Zhaohui Xue Aiqing Cheng yanni Li Wancong Yu xiaohong Kou School of Chemical Engineering and Technology Tianjin University Medical Plant Lab Tianjin Research Center of Agricultural Biotechnology

Biochanin A (BCA), the most abundant isoflavone in chickpeas, presents a wide range of biological activities, such as hypolipidaemic, anti-oxidative, anti-proliferative, and estrogen-like effects. We investigated the interaction between BCA and human serum albumin (HSA) via several techniques. UV–Vis absorption spectroscopy verified the conformational variation of HSA after BCA addition, and fluorescence spectroscopy revealed the relevant binding parameters. Circular dichroism spectroscopy was used to estimate the secondary structural changes of HSA with and without BCA. Molecular docking and dynamics simulations were then applied to study the characteristics of HSA with BCA. Energy decomposition analysis was used to prove that Trp214 in subdomain IIA of HSA is the most likely binding site of BCA. Van der Waals forces and hydrophobic interactions may play important roles during the binding process. All of our results showed that BCA presents significant binding affinity to HSA, thus confirming that the role of HSA has as an efficient transporter of biomolecules. © 2017, Tianjin University and Springer-Verlag Berlin Heidelberg.

关键词： Absorption spectroscopy Binding energy Bins Body fluids Dichroism Flavonoids Fluorescence spectroscopy Hydrophobicity Molecular biology Molecular dynamics Van der Waals forces

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云南省眼科医师治疗睑腺炎现状调查

现代中医药 2025年第2期45卷 103-108页

作者：吴冰洁罗燕王妍妮王熠云南中医药大学云南昆明650500 云南中医药大学第一附属医院云南昆明650021

目的了解当前云南省眼科医师诊治睑腺炎的方案,为临床规范诊疗睑腺炎提供参考。方法采用方便抽样获得样本人群,运用自主设计问卷,通过“问卷星平台”开展问卷调查。应用SPSS 26.0统计分析数据。结果105名云南省眼科医师参与本次问卷调查... 详细信息

目的了解当前云南省眼科医师诊治睑腺炎的方案,为临床规范诊疗睑腺炎提供参考。方法采用方便抽样获得样本人群,运用自主设计问卷,通过“问卷星平台”开展问卷调查。应用SPSS 26.0统计分析数据。结果105名云南省眼科医师参与本次问卷调查,回收有效问卷100份(95.24%)。在睑腺炎未成脓期,眼科医生普遍人为干预,选择的首要处理措施前三位依次是局部热敷或冷敷、施用抗生素、清洁睑缘。对于抗生素的使用,4.00%眼科医师从不行抗菌治疗,而56.00%的眼科医生依据经验予以抗菌药物,在初次诊断睑腺炎时即开始施用抗生素的医师占58.00%,给药途径推荐局部抗生素滴眼液或眼膏者高达92.00%,多建议用药1 w左右(61.00%)。结论云南省眼科医师诊治睑腺炎大多采取积极态度,疾病早期习惯运用局部热敷或冷敷,抗生素居于第二位。首选的抗菌药品排序为左氧氟沙星或氧氟沙星滴眼液、妥布霉素地塞米松滴眼液或眼膏、妥布霉素滴眼液、红霉素滴眼液或眼膏。

关键词：睑腺炎治疗措施抗生素眼科医师现状调查