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溶磷菌剂对玉米幼苗生长及根际土壤细菌群落结构和磷素形态的影响

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中国土壤与肥料 2024年第2期 80-88页

作者：万水霞李帆王静郭志彬喻颖蒋光月武际安徽省农业科学院土壤肥料研究所(国家土壤质量太和观测实验站) 安徽合肥230031 养分循环与耕地保育安徽省重点实验室安徽合肥230031

以FD11(普瑞斯特氏菌Priestia sp.)和ch07(阿氏芽孢杆菌Bacillus aryabhattai)两种溶磷菌剂为试验材料,进行菌剂灌根盆栽试验,测定溶磷菌剂施用对玉米生长、根际土壤养分、土壤微生物特性及土壤不同形态磷含量的影响。结果表明,施用溶... 详细信息

以FD11(普瑞斯特氏菌Priestia sp.)和ch07(阿氏芽孢杆菌Bacillus aryabhattai)两种溶磷菌剂为试验材料,进行菌剂灌根盆栽试验,测定溶磷菌剂施用对玉米生长、根际土壤养分、土壤微生物特性及土壤不同形态磷含量的影响。结果表明,施用溶磷菌剂可改善根际土壤养分特征和微生物学特性,增加根际土壤的活性磷源含量,对玉米幼苗表现出良好的促生作用。与不施菌剂相比,FD11处理玉米幼苗的株高、茎粗、地上部干重分别增加31.88%、36.39%、104.00%;根际土壤碱解氮、有效磷、速效钾分别增加了21.90%、107.67%、5.77%。施用溶磷菌剂的土壤H_(2)O-Pi(Pi为无机磷)、NaHCO_(3)-P和NaOH-P含量增加,但HCl-Pi和Residual-P含量显著降低。施用溶磷菌剂改变了玉米根际土壤细菌的群落结构,在细菌属分类学水平上,不动杆菌属、假单胞菌属、海洋杆菌属、鞘氨醇单胞菌属、节杆菌属等功能细菌的相对丰度显著增加。综合以上分析,施用溶磷菌剂显著提高了土壤速效养分含量,改变了根际土壤细菌的群落结构,增加了活性磷源的含量,从而改善了土壤肥力,促进玉米根系发育和幼苗生长。此项研究可为新型微生物菌肥的研发提供理论依据。

关键词：溶磷菌土壤肥力根系形态磷素形态微生物群落结构

The effects of climate warming on microbe-mediated mechanisms of sediment carbon emission

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Journal of Environmental Sciences 2023年第7期129卷 16-29页

作者： Weiwei Lü Haoyu Ren Wanchang Ding He Li Xin Yao Xia jiang College of Water Sciences Beijing Normal UniversityBeijing 100875China State Key Laboratory of Environmental Criteria and Risk Assessment National Engineering Laboratory of Lake Water Pollution Control and Ecological Restoration TechnologyChinese Research Academy of Environmental SciencesBeijing 100012China School of Environment and Planning University of LiaochengLiaocheng 252000China

Due to significant differences in biotic and abiotic properties of soils compared to those of sediments,the predicted underlying microbe-mediated mechanisms of soil carbon emissions in response to warming may not be applicable for estimating similar emissions from inlandwater *** addressed this issue by incubating different types of sediments,(including lake,small river,and pond sediments)collected from 36 sites across the Yangtze River basin,under short-term experimentalwarming to explore the effects of climatewarming on sediment carbon emission and the underlying microbe-mediated *** results indicated that under climate warming Cc emissions were affected more than ch_(4) emissions,and that pond sediments may yield a greater relative contribution of CO_(2) to total carbon emissions than lake and river ***-induced CO_(2) and ch_(4) increases involve different microbe-mediated mechanisms;Warming-induced sediment CO_(2) emissions were predicted to be directly positively driven by microbial community network modularity,which was significantly negatively affected by the quality and quantity of organic carbon and warming-induced variations in dissolved oxygen,Conversely,warminginduced sediment ch_(4) emissionswere predicted to be directly positively driven bymicrobial community network complexity,which was significantly negatively affected by warminginduced variations in *** findings suggest that biotic and abiotic drivers for sediment CO_(2) and ch_(4) emissions in response to climate warming should be considered separately when predicting sediment organic carbon decomposition dynamics resulting from climate change.

关键词： Inland water sediments Temperature sensitivity Carbon emission Microbe-mediated mechanism Short-term experimental warming

Development of conductive hydrogels: from design mechanisms to frontier applications

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Bio-Design and Manufacturing 2022年第4期5卷 729-756页

作者： Yang Hong Zening Lin Zirong Luo Tao jiang Jianzhong Shang Yun Yang College of Intelligence Science and Technology National University of Defense TechnologyChangsha 410073China

Owing to their excellent mechanical flexibility, electrical conductivity, and biocompatibility, conductive hydrogels(chs) are widely used in the fields of energy and power, and biomedical technology. To arrive at a better understanding of the design methods and development trends of chs, this paper summarizes and analyzes related research published in recent years. First,we describe the properties and characteristics of chs. Using Scopus, the world’s largest abstract and citation database, we conducted a quantitative analysis of the related literature from the past 15 years and summarized development trends in the field of chs. Second, we describe the types of ch network crosslinking and basic functional design methods and summarize the three-dimensional(3D) structure-forming methods and conductive performance tests of chs. In addition, we introduce applications of chs in the fields of energy and power, biomedical technology, and others. Lastly, we discuss several problems in current ch research and introduce some prospects for the future development of chs.

关键词： Conductive hydrogels Crosslinking mechanism Design methods 3D structure-forming methods Conductive hydrogel applications

基于BSA-seq和植物激素联合分析筛选番茄耐热基因

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农业生物技术学报 2024年第5期32卷 995-1007页

作者：姜悦畅段金虎李毅丰毛秀杰王帅张宁河北科技师范学院园艺科技学院河北省特色园艺种质挖掘与创新利用重点实验室河北省燕山农业特色产业技术研究院河北科技师范学院河北省高校特色园艺植物生物育种应用技术研发中心

高温影响番茄(Solanum lycopersicum)的生理和激素代谢，番茄耐热相关基因的定位可以为后续基因克隆和功能分析提供理论依据和技术支持。本研究以电导率为鉴定指标，通过对苗期2个番茄品系进行高温耐热鉴定，以耐热品系ch与不耐热品系D... 详细信息

高温影响番茄(Solanum lycopersicum)的生理和激素代谢，番茄耐热相关基因的定位可以为后续基因克隆和功能分析提供理论依据和技术支持。本研究以电导率为鉴定指标，通过对苗期2个番茄品系进行高温耐热鉴定，以耐热品系ch与不耐热品系DH及其F1代自交构建成的F2代分离群体为材料，对亲本ch与DH进行植物激素检测，F2代分离群体采用混合分离群分析法(bulked sergeant analysis, BSA)进行重测序，通过二者联合分析筛选出与番茄耐热相关的候选基因。结果表明，通过植物激素差异代谢物筛选及KEGG注释获得了4个与植物非生物胁迫相关的代谢通路，分别为甘氨酸、丝氨酸和苏氨酸代谢途径，氨基酸的生物合成途径，色氨酸代谢途径和氨酰-tRNA生物合成途径；通过BSA-seq测序，在3号染色体上获得了1个大小为6.32 Mb的候选区间，其中包括752个候选基因，结合差异代谢通路，最终在候选区域代谢通路内筛选出5个与番茄耐热相关的候选基因，分别为D-甘油酸3-激酶(D-glycerate 3-kinase,DG3K)、羟基丙酮酸还原酶(hydroxypyruvate reductase, HYDR)、脯氨酰-tRNA合成酶(prolyl-tRNA synthetase, PARS2)和磷酸核酮糖-3-差向异构酶(ribulose phosphate 3-epimerase, RPE)、醛脱氢酶(aldehyde dehydrogenase, ALDH)；通过qPCR对候选基因进行表达量分析，候选基因DG3K、PARS2和RPE在高温胁迫3 h后表达量极显著增加(P<0.01)，推断这3个候选基因可能在调控番茄耐热能力上起到重要作用。本研究对分子辅助选育番茄耐热品系具有重要意义。

关键词：番茄耐热鉴定植物激素混合分离群分析(BSA)

Styrene epoxidation catalyzed by polyoxometalate/quaternary ammonium phase transfer catalysts: The effect of cation size and catalyst deactivation mechanism

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chinese Journal of chemical Engineering 2023年第3期55卷 192-201页

作者： Qiongna Xiao Yuyan jiang Weiqiang Yuan Jingjing chen Haohong Li Huidong Zheng College of chemical Engineering Fuzhou UniversityFuzhou 350116China Qingyuan Innovation Laboratory Quanzhou 362801China Engineering Research Center of Advanced Manufacturing Technology for Fine chemicals Fujian Province UniversityFuzhou UniversityFuzhou 350116China College of chemistry Fuzhou UniversityFuzhou 350116China

Catalytic epoxidation of alkenes is an important type of organic reaction in chemical industry,and the deep insight into catalyst deactivation will help to develop new epoxidation *** this work,series of quaternary ammoniums bearing different cationic sizes,***+(methyltrioctylammonium,[(C_(8)H_(17))_(3)ch_(3)N]+),HTMA+(hexadecyltrimethylammonium,[(C_(16)H_(33))(ch_(3))_(3)N]+) and DMDOA+(dimethyldioctadecylammonium,[(C_(18)H_(37))_(2)(ch_(3))_(2)N]+) were incorporated with polyoxometalate (POM) anions to prepare phase transfer catalysts (PTCs),which were used in the styrene *** them,(MTOA)_(3)PW_(4)O_(24)exhibits the best catalytic performance judged from the highest styrene conversion rate(52%) and styrene oxide selectivity (93%),during which the styrene epoxidation conditions were ***,the deactivation mechanism of this kind of PTCs was proposed firstly,*** the case of low H_(2)O_(2) content,the oxidant can only be used in the styrene epoxidation,in which the catalyst can transform into stable Keggin-type *** when the content of H_(2)O_(2) is higher,the excess H_(2)O_(2) can reactivate the Keggin-type POM into active (PW_(4)O_(24))_(3)-anions,which can trigger the ring-opening polymerization of styrene ***,the catalyst is deactivated by adhered poly(styrene oxide)irreversibly,which was determined by NMR *** this situation,the active moiety{PO_(4)[WO(O_(2))_(2)]_(4)}_(3)-in phase-transfer catalytic system can break into some unidentified species with low W/P ratio with the presence of *** work will be beneficial for the design of new PTCs in alkene epoxidation in fine chemical industry.

关键词： Phosphotungstic acid phase-transfer catalyst Styrene epoxidation Catalyst deactivation mechanism Cation size effect

载体氧空位提升Sabatier反应钌基催化剂性能研究

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功能材料 2024年第5期55卷 5161-5168页

作者：陈志强方涛孙海云王青蒋榕培刘梦然项锴北京航天试验技术研究所航天绿色推进剂研究与应用北京市重点实验室北京100074 北京航天试验技术研究所航天液体推进剂研究中心北京100074

通过尿素的掺杂,有效诱导Al_(2)O_(3)载体氧空位的形成,进而通过金属-载体之间的相互作用,提升Al_(2)O_(3)载体表面Ru基活性物种的分散度,调控Ru基活性中心的电子性质,从而达到有效提升Sabatier反应Ru基催化剂性能的目的。在此过程中,借... 详细信息

通过尿素的掺杂,有效诱导Al_(2)O_(3)载体氧空位的形成,进而通过金属-载体之间的相互作用,提升Al_(2)O_(3)载体表面Ru基活性物种的分散度,调控Ru基活性中心的电子性质,从而达到有效提升Sabatier反应Ru基催化剂性能的目的。在此过程中,借助^(27)Al核磁(^(27)Al-NMR)验证了尿素的掺杂可有效诱导Al_(2)O_(3)载体中氧空位的形成。通过透射电子显微镜(TEM)发现,富含氧空位的Al_(2)O_(3)载体可将负载的Ru颗粒稳定在3.7 nm左右,且粒径分布集中。通过X射线光电子能谱(XPS)和H_(2)程序升温还原(H_(2)-TPR)发现,载体氧空位可有效调控Al_(2)O_(3)载体表面Ru基活性位点的电子性质。经过Sabatier反应性能测试发现,在300℃,n CO_(2)∶n H_(2)=1∶4,空速为6000 mL·g^(-1)·h^(-1)的反应条件下,CO_(2)转化率可达61.25%,ch_(4)选择性可达92.31%,而且,在20 h的反应时间内,催化活性没有明显衰减。

关键词： Sabatier反应 Ru基催化剂电子性质氧空位 CO_(2)转化率

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Research strategies in click chemistry: Measuring its cognitive contents and knowledge flow

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chinese chemical Letters 2023年第2期34卷 3-6页

作者： Jing Zhu Ming chen He Liang Quanmin Li Xuefeng jiang Department of Philosophy East China Normal UniversityShanghai 200241China School of Journalism Fudan UniversityShanghai 200433China Shanghai Key Laboratory of Green chemistry and chemical Process Department of ChemistryEast China Normal UniversityShanghai 200062China

The issue about how outstanding scientists obtained innovative findings has drawn the interest of researchers in science, policy and scientometrics. Here, we attempt to address this question by using computational methods to measure the cognitive content and concepts of K. Barry Sharpless’ research and estimate the knowledge flow of his click chemistry to other fields. First, we traced Sharpless’ conceptual journey over time through topic modeling approach, mapping and clustering of the epistemic network from distant reading his publications. We find that connectivity and functions, the core features of click chemistry, are embodied in his constant search for simplicity. What makes simplicity possible is his continuous work with collaborators on reactivity and reaction mechanisms. Moreover, citation and link analysis show that click chemistry had a much richer impact on other research fields than what is generally acknowledged, and drew solutions to significant and practical questions back to chemistry from *** with these findings, we propose that the click chemistry philosophy follows the way that values nature’s principle. chemistry has a clear-cut epistemic domain in modeling Nature. Thus, click chemistry as a concept on doing science beyond a connective technology goes across the boundaries between disciplines and impacts many other fields.

关键词： Click chemistry K.B.Sharpless Research strategies Connectivity History and philosophy of chemistry

Ag_(24)Au cluster decorated mesoporous Co_(3)O_(4)for highly selective and efficient photothermal CO_(2)hydrogenation

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Nano Research 2022年第6期15卷 4965-4972页

作者： Yan Xiong Xu Liu Yi Hu Dong Gu Minghang jiang Zuoxiu Tie Zhong Jin MOE Key Laboratory of Mesoscopic chemistry MOE Key Laboratory of High Performance Polymer Materials and TechnologyJiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Suzhou Tierui New Energy Technology Co.Ltd. Suzhou 215228China The Institute for Advanced Studies Wuhan UniversityWuhan 430072China

Photothermal carbon dioxide hydrogenation represents a promising route to reduce the emission of greenhouse gas CO_(2)and produce value-added chemicals,but the selectivity and stability of photothermal catalysts need to be ***,we report the rational fabrication of well-defined Ag_(24)Au cluster decorated highly ordered nanorod-like mesoporous Co_(3)O_(4)(Ag_(24)Au/mesoCo_(3)O_(4))for highly efficient and selective CO_(2)*** orderly assembled meso-Co_(3)O_(4)nanorods were prepared via a nanocasting method,offering large surface area and abundant active sites for CO_(2)adsorption and ***,the catalytic activity and selectivity were further improved by molecule-like Ag_(24)Au cluster decoration and reaction temperature *** Ag_(24)Au/meso-Co_(3)O_(4)composite catalyst exhibited an ultrahigh ch_(4)yield rate of 204 mmol·g^(−1)·h^(−1)and a greatly improved ch_(4)selectivity of 82%for CO_(2)hydrogenation,significantly higher than those of pristine meso-Co_(3)O_(4)*** mechanism of the photothermal catalytic performance improvement was verified by CO_(2)temperature-programmed desorption and time-resolved transient photoluminescence,revealing that CO_(2)molecules underwent a vigorous adsorption and rapid activation process over Ag_(24)Au/meso-Co_(3)O_(4).The hot electrons created by the localized surface plasmon resonance effect of Ag_(24)Au clusters facilitated the charge transfer for subsequent multi-electron CO_(2)hydrogeneration processes,resulting in a significant increase in the productivity and selectivity for CO_(2)-to-ch_(4)*** work suggests that the rational coupling of well-defined metal atom clusters and ordered transition metal compound nanostructures could open a new avenue towards photoinduced green chemistry processes for efficient CO_(2)recycling and reutilization.

关键词： mesoporous Co_(3)O_(4) Ag_(24)Au clusters CO_(2)hydrogenation photothermal catalytic

Gas production mechanism of Irgamet 39 and its long‐term corrosion resistance

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High Voltage 2023年第5期8卷 931-942页

作者： Huiying Xiang Yuan Yuan Guoyong Liu Xue Gao cheng Zhang jiang Zhou Ruijin Liao College of Materials Science and Engineering Chongqing UniversityChongqingChina State Key Laboratory of Power Transmission Equipment&System Security and New Technology Chongqing UniversityChongqingChina Dongfang Electric Machinery Co. LtdDeyangChina

The phenomenon of transformer failure caused by oil‐sulphur corrosion of oil₋paper insulation system has always been concerned by *** 39 is the most used metal passivator for inhibiting sulphur ***,Irgamet 39 causes abnormal dissolved gas in oil during the process of exerting anti‐corrosion ***,the gas production mechanism of Irgamet 39 and its long‐term corrosion resistance were *** with other metal passivators,the Irgamet 39 produces more dissolved gases in oil,especially H_(2),CO and CO_(2).The main sources of free radicals in the gas production process are from the branched chains of the Irgamet 39 structure(−ch_(2)N(C_(8)H_(17))_(2)and−ch_(3)).Furthermore,the ageing products of insulating paper and oil promote the cleavage of the chain in the Irgamet 39 molecule,which then causes Irgamet 39 to generate more dissolved *** 39 exhibits excellent long‐term corrosion inhibition properties,while it also leads to abnormal gases in the oil,which can affect the interpretation of the dissolved gas analysis data and thus interfere with the *** work provides useful information for the practical application of Irgamet 39 and helps electrical workers make reasonable predictions for transformer problems.

关键词： corrosion resistance mechanism