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Effects of the nitrification inhibitor nitrapyrin and the plant growth regulator gibberellic acid on yield-scale nitrous oxide emission in maize fields under hot climatic conditions

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Pedosphere 2021年第2期31卷 323-331页

作者： Khadim DAWAR Kamil SARDAR mohammad ZAmAN christoph mÜLLER Alberto SANZ-cOBENA Aamir KHAN Azam BORZOUEI ana Gabriela PÉREZ-cASTILLO Department of Soil and Environmental Science University of Agriculture PeshawarPeshawa 25000(Pakistan) Soil and Water management&crop Nutrition Joint FAO/IAEA Division of Nuclear Techniques in Food&AgricultureP.O.Box 100Vienna A-1400(Austria) Institute of Plant Ecology Justus Liebig UniversityHeinrich-Buff-Ring 26Giessen D-35392(Germany) School of Biology and Environmental Science University College DublinBelfieldD04 V1W8(Ireland) management of Environment and Agricultural Risks(cEIGRAm) ETSIAABUniversidad Poliécnica de MadridMadrid 28040(Spain) Agricultural Research School Nuclear Science and Technology Research InstituteP.O.Box 31465/1498Karaj(Iran) Environmental Pollution Research center(cIcA) University of Costa RicaMontes de Oca 11501(Costa Rica)

Nitrification inhibitors are widely used in agriculture to mitigate nitrous oxide(N_(2)O)emission and increase crop ***,no concrete information on their mitigation of N_(2)O emission is available under soil and environmental conditions as in Pakistan.A field experiment was established using a silt clay loam soil from Peshawar,Pakistan,to study the effect of urea applied in combination with a nitrification inhibitor,nitrapyrin(2-chloro-6-tri-chloromethyl pyridine),and/or a plant growth regulator,gibberellic acid(GA_3),on N_(2)O emission and the nitrogen(N)uptake efficiency of *** experimental design was a randomized complete block with five treatments in four replicates:control with no N(cK),urea(200 kg N ha^(-1))alone,urea in combination with nitrapyrin(700 g ha^(-1)),urea in combination with GA_3(60 g ha^(-1)),and urea in combination with nitrapyrin and GA_*** N_(2)O emission,yield,N response efficiency,and total N uptake were measured during the experimental *** treatment with urea and nitrapyrin reduced total N_(2)O emission by 39%–43%and decreased yield-scaled N_(2)O emission by 47%–52%,relative to the treatment with urea *** maize plant biomass,grain yield,and total N uptake increased significantly by 23%,17%,and 15%,respectively,in the treatment with urea and nitrapyrin,relative to the treatment with urea alone,which was possibly due to N saving,lower N loss,and increased N uptake in the form of ammonium;they were further enhanced in the treatment with urea,nitrapyrin,and GA_3 by 27%,36%,and 25%,respectively,probably because of the stimulating effect of GA_3 on plant growth and development and the reduction in biotic and abiotic *** results suggest that applying urea in combination with nitrapyrin and GA_3 has the potential to mitigate N_(2)O emission,improve N response efficiency,and increase maize yield.

关键词： fertilizer use efficiency greenhouse gas emission mitigation N response efficiency N uptake efficiency N_(2)O flux plant growth hormone urea

Tailoring the partitioning of proteins using ionic liquids as adjuvants in polymer-polymer aqueous biphasic systems

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Green chem.cal Engineering 2022年第4期3卷 328-337页

作者： Flavia F.magalhaes matheus m.Pereira Rita de cassia Superbi de Sousa ana P.m.Tavares Joao A.P.coutinho mara G.Freire cIcEcO-Aveiro Institute of materials Department of ChemistryUniversity of AveiroAveiro3810-193Portugal Separation Process Laboratory(LPS) Department of Food TechnologyFederal University of Viçosa(UFV)P.H.Rolfs Av.s/n36570-000 ViçosaMGBrazil

Aqueous biphasic systems(ABS)are promising for proteins purification;however,when dealing with samples comprising several proteins,the selectivity towards a target protein is difficult to *** this work,the addition of ionic liquids(ILs)as adjuvants(5 wt%and 10 wt%)in ABS composed of polyethylene glycol(PEG)and dextran was investigated to tailor proteins partitioning between the coexisting *** liquid-liquid phase diagrams were determined at 298 K,followed by partition studies of three proteins(bovine serum albumin(BSA),immunoglobulin G(IgG),and cytochrome c(cyt c)).Partition coefficients of IgG and BSA indicate the preference of both proteins to the dextran-rich phase,whereas cyt c has no preferential partitioning between the *** addition of chloride-based ILs as adjuvants allows to increase or decrease the partition coefficients,thus tailoring the proteins partitioning between the *** partitioning essentially depends on the IL content in each phase,whereas cyt c and IgG partitioning is ruled by the ILs chem.cal structure and established *** docking was carried out to address the ILs effect on the proteins partitioning,supporting experimental observations,while identifying the specific interactions *** partition of each protein in polymer-salt ABS with ILs as adjuvants was determined,demonstrating the higher tailoring ability of polymer-polymer ABS when adding ***,the partition of each protein in presence of the remaining ones was determined,as well as the selectivity of the studied systems to separate each pair of proteins,paving the way for their use in liquidliquid chromatography.

关键词： Aqueous biphasic systems Polymer-polymer systems Protein partition Ionic liquids Adjuvants

Impact of chitosan-based nanocarriers on cytoskeleton dynam.cs:current status and challenges

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BIOcELL 2022年第4期46卷 885-891页

作者： m.cAROLINA DI SANTO AGUSTINA ALAImO ana PAULA DOmÍNGUEZ RUBIO OScAR E.PÉREZ Departamento de Quím.ca Biológica Facultad de Ciencias Exactas y NaturalesUniversidad de Buenos AiresBuenos AiresArgentina Instituto de Quím.ca Biológica de la Facultad de ciencias Exactas y Naturales Consejo Nacional de Investigaciones Científicas y Técnicas(IQUIBICENCONICET)Buenos AiresArgentina

chitosan-based nanocarriers(cS-Ncs)show a promising role in improving drugs and bioactive compounds delivery for ***,the effects exerted by cS-Ncs at the cellular level,including their recognition and uptake,have not been fully investigated *** factors,including size,shape,concentration,and surface chemistry of cS-Ncs,play an important role in determining the types of intracellular signals *** m.chanism of uptake and the involvement of the cytoskeleton during the cS-Ncs endocytosis variates among the different cell types as well as further effects observed inside *** the present work,we discuss the effects induced by cS-Ncs per se on the cytoskeleton,a key component in cell architecture and *** focus of this report is made on tumoral and normal biological models in which cS-Ncs could differentially affect the cell *** recent years reports regarding the impact of cS-Ncs on cytoskeleton dynam.cs and the current techniques for its evaluation are summarized and *** m.chanisms underlying cytoskeletal impact after cell exposure to cS-Ncs is critical for the design of safest value-added formulations in the biomedical ***,this revision points out some interesting aspects of cytoskeletal changes and cell death encompassing anti-tumoral effects.

关键词： cytoskeletal dynam.cs cellular uptake Endocytosis Nanocarriers chitosan Bioactive compounds

Li2SnO3 branched nano- and m.crostructures with intense and broadband white-light emission

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Nano Research 2019年第2期12卷 441-448页

作者： miguel Garcia-Tecedor Javier Bartolome David maestre Achim Trampert ana cremades Dpt. Fisica de materials Facultad de CC. Fisicas Universidad Complutense de Madrid Madrid 28040 Spain Paul-Drude-Institut fur Festkorperelektronik Hausvogteiplatz 5-7 Berlin 10117 Germany Institute of Advanced materials (INAm) Universitat Jaume I Castello 12006 Spain Dpt. Fisica de materiales Facultad de CC. Ftsicas Universidad Complutense de Madrid Madrid 28040 Spain

Exploiting the synergy between m.crostructure, morphology and dimensions by suitable nanomaterial engineeri ng, can effectively upgrade the physical properties and material performances. Li2SnO3 elongated nano- and m.crostructures in form of belts, wires, rods and branched structures have been fabricated by a vapor-solid method at temperatures ranging from 700 to 900℃ using metallic Sn and Li2cO3 as precursors. The achievement of these new morphologies can face challenging applications for Li2SnO3, not only in the field of energy storage, but also as building blocks in optoelectronic devices. The m.cro? and nanostructures grown at 700 and 800℃ correspond to monoclinic Li2SnO3, while at 900℃ complex Li2S nO/SnO2 core-shell m.crostructures are grow n, as con firmed by X-ray diffractio n and Rama n spectroscopy. Transmission electron m.croscopy reveals structural disorder related to stacking faults in some of the branched structures, which is associated with the prese nee of the low-temperature phase of L12S nO3. The luminescent resp onse of these structures is domi nated by in tense emissi ons at 2, 2.5 and 3 eV, almost completely covering the whole range of the visible light spectrum. As a result, white-light emission is obtained without the need of phosphors or complex quantum well heterostructures. Enhanced functionality in applications such as in light-emitting devices could be exploited based on the high luminescenee intensity observed in some of the analysed Li2SnO3 structures.

关键词： lithium oxides white light emitters nanostructures luminescenee

cysteine and cysteine-Related SignalingPathways in Arabidopsis thaliana

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molecular Plant 2014年第2期7卷 264-276页

作者： Luis c. Romero m. ángeles Aroca ana m. Laureano-marín Inm.culada moreno Irene García cecilia Gotor Instituto de Bioquím.ca Vegetal y Fotosíntesis Consejo Superior de Investigaciones Científicas and Universidad de Sevilla Avenida Américo Vespucio 49 41092 Sevilla Spain

cysteine occupies a central position in plant metabolism because it is a reduced sulfur donor moleculeinvolved in the synthesis of essential biomolecules and defense compounds. moreover, cysteine per se and its deriva-tive molecules play roles in the redox signaling of processes occurring in various cellular compartments. cysteine issynthesized during the sulfate assimilation pathway via the incorporation of sulfide to O-acetylserine, catalyzed byO-acetylserine（thiol）lyase （OASTL）. Plant cells contain OASTLs in the mitochondria, chloroplasts, and cytosol, resultingin a complex array of isoforms and subcellular cysteine pools, in recent years, significant progress has been made inArabidopsis, in determining the specific roles of the OASTLs and the metabolites produced by them. Thus, the dis-covery of novel enzymatic activities of the less-abundant, like DES1 with L-cysteine desulfhydrase activity and ScSwith S-sulfocysteine synthase activity, has provided new perspectives on their roles, besides their metabolic ***, the research has been demonstrated that cytosolic sulfide and chloroplastic S-sulfocysteine act as signalingmolecules regulating autophagy and protecting the photosystems, respectively. In the cytosol, cysteine plays an essentialrole in plant immunity; in the mitochondria, this molecule plays a central role in the detoxification of cyanide, which isessential for root hair development and plant responses to pathogens.

关键词： β-cyanoalanine synthase cysteine desulfhydrase cyanide O-acetylserine(thiol)lyase plant development plant immunity redox signaling S-sulfocysteine synthase stress sulfide

Synthesis and applications of lanthanoid complexes of pentadentate and hexadentate N_(5) and N_(6) m.crocycles:A review

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Journal of Rare Earths 2024年第1期42卷 1-15,I0001页

作者： Julio corredoira-Vázquez cristina González-Barreira Paula Oreiro-martínez ana m.García-Deibe Jesús Sanmartín-matalobos matilde Fondo Departamento de Quím.ca Inorganica Facultade de QuímicaUniversidade de Santiago de CompostelaCampus Vida15782Santiago de CompostelaSpain Phantom-g CICECO-Aveiro Institute of MaterialsDepartment of PhysicsUniversity of Aveiro3810-193AveiroPortugal Institute of materials(imATUS) Universidade de Santiago de Compostela15782Santiago de CompostelaSpain

In this paper,the lanthanoid complexes of N_(5) and N_(6) m.crocycle ligands,without pendant arms or additional heteroatoms,are *** review covers the period from 2015 to the current date,since in 2014 Schiff base m.crocyclic ligands incorporating the pyridine moiety,and their complexes,were revised,and in 2015 the chemistry of pentaaza m.crocycle ligands with rare earth metals was also *** and phthalocyanine ligands are not included in this review,which primarily focuses on complexes with Schiff bases and amines without pendant arms or any additional donor other than *** synthetic methods,structural characterization,based on single X-ray crystal data,and properties of the lanthanoid complexes,with special attention to magneto-structural correlations,are presented herein.

关键词： Lanthanoid N_(5),N_(6)m.crocycle coordination chemistry chirality Biological activity molecule magnet

A Pt/mnV_(2)O_(6) nanocomposite for the borohydride oxidation reaction

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Journal of Energy chemistry 2021年第4期30卷 428-436页

作者： Jadranka milikic marta martins ana S.Dobrota Gamze Bozkurt Gulin S.P.Soylu Ayse B.Yurtcan Natalia V.Skorodumova Igor A.Pasti Biljana Sljukic Diogo m.F.Santos Faculty of Physical chemistry University of BelgradeStudentski trg 12-1611158 BelgradeSerbia ceFEmA Instituto Superior TécnicoUniversidade de LisboaLisbonPortugal Project coordination Implementation and Research center Erzurum Technical UniversityErzurumTurkey Faculty of Engineering Chemical Engineering DepartmentIstanbul University-Cerrahpasa34320 AvcilarIstanbulTurkey Department of chem.cal Engineering Atatürk UniversityErzurumTurkey Department of materials Science and Engineering School of Industrial Engineering and ManagementKTH-Royal Institute of TechnologyBrinellvägen 2310044 StockholmSweden Department of Physics and Astronomy Uppsala UniversityBox 51675120 UppsalaSweden

Problems associated with carbon support corrosion under operating fuel cell conditions require the identification of alternative supports for platinum-based nanosized *** supported on manganese vanadate(Pt/mnV_(2)O_(6))was prepared by m.crowave irradiation method and characterized using X-ray diffraction,Fourier-transform infrared spectroscopy,X-ray photoelectron spectroscopy,scanning electron m.croscopy with energy dispersive spectroscopy,and transmission electron *** borohydride oxidation reaction(BOR)on Pt/mnV_(2)O_(6) was studied in highly alkaline media using voltammetry,chronoamperometry,and electrochem.cal impedance *** electrocatalytic activity of Pt/mnV_(2)O_(6) was also compared with that of commercial Pt/c(46 wt%Pt)*** apparent activation energy of BOR at Pt/mnV_(2)O_(6) was estimated to be 32 k J mol^(-1) and the order of reaction to be 0.51,indicating that borohydride hydrolysis proceeds in parallel with its ***-term stability of Pt/mnV_(2)O_(6) under BOR typical conditions was observed.A laboratory-scale direct borohydride fuel cell assembled with a Pt/mnV_(2)O_(6) anode reached a specific power of 274 W g^(-1).Experimental results on Pt/mnV_(2)O_(6) were complemented by DFT calculations,which indicated good adherence of Pt to mnV_(2)O_(6),beneficial for electrocatalyst stability.

关键词： Borohydride oxidation reaction Platinum-based electrocatalyst manganese vanadate Density functional theory

calcitriol induces post-thawed bovine sperm.capacitation

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BIOcELL 2023年第5期47卷 1135-1143页

作者： ana cEcILIA LIAUDAT FRANcIScA EBEL BIANcA ana OPIZZO mARINA AURORA GONZALEZ DAmIÁN BLOIS PABLO BOScH NANcY RODRIGUEZ Departamento de Biología molecular Instituto de Biotecnología Ambiental y Salud(INBIAS)Río Cuarto5800Argentina

Background:capacitation is a set of physiological changes sperms undergo to acquire fertilizing *** vivo,this process is directly associated with high calcium levels in sperm ***,the vitamin D hypercalcem.c metabolite,is related to human sperm motility,capacitation,and acrosome *** work aimed to study the effect of calcitriol on bull sperm quality parameters and ***:One million freezethawed spermatozoa were obtained from different bulls and treated with 20 nm of calcitriol for 30 *** cells(negative control)and treated ones with calcitriol or heparin(100μg/mL,positive capacitation control)were evaluated for motility,viability,and functional ***(70μm,30 min)treatment was included as a reactive oxygen species(ROS)positive sperm ***:The results elucidated that sperm exposed to 20 nm.calcitriol showed higher viability,vigor,and capacitation than their positive and negative *** percentage of sperm with intact plasma and acrosome membranes,mitochondrial membrane potential(ΔΨm),and phosphatidylserine externalization was similar in all the conditions evaluated,while ROS production was higher with heparin and menadione-treated groups than the calcitriol group or negative ***:Our results indicate that calcitriol induces the capacitation of thawed bull spermatozoa and maintains acceptable values of progressive motility,viability,and vigor without altering key biological parameters such as redox status,ΔΨm,and cell death.

关键词： Bovine Sperm.capacitation calcitriol cell viability Plasma membrane integrity Reactive oxygen species

Selective ligninolysis of wheat straw and wood chips by the white-rot fungus Lentinula edodes and its influence on in vitro rumen degradability

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Journal of Animal Science and Biotechnology 2017年第2期8卷 391-404页

作者： Sandra J.A.van Kuijk José c.del Río Jorge Rencoret ana Gutiérrez Anton S.m.Sonnenberg Johan J.P.Baars Wouter H.Hendriks John W.cone Animal Nutrition Group Wageningen UniversityDe Elst 16708 WD WageningenThe Netherlands Instituto de Recursos Naturales y Agrobiologica de Sevilla(IRNAS-cSIc) Avenida Reina Mercedes1042012 SevilleSpain Plant Breeding Wageningen UniversityDroevendaalsesteeg 16708 PB WageningenThe Netherlands

Background： The present work investigated the influence of lignin content and composition in the fungal treatment of lignocellulosic biomass in order to improve rumen degradability. Wheat straw and wood chips,differing in lignin composition, were treated with Lentinula edodes for 0, 2, 4, 8 and 12 wk and the changes occurring during fungal degradation were analyzed using pyrolysis-gas chromatography-mass spectrometry and detergent fiber ***： L. edodes preferentially degraded lignin, with only limited cellulose degradation, in wheat straw and wood chips, leaving a substrate enriched in cellulose. Syringyl（S）-lignin units were preferentially degraded than guaiacyl（G）-lignin units, resulting in a decreased S/G ratio. A decreasing S/G ratio（wheat straw： r =-0.72, wood chips： r =-0.75） and selective lignin degradation（wheat straw： r =-0.69, wood chips： r =-0.88） were correlated with in vitro gas production（IVGP）, a good indicator for rumen ***： L. edodes treatment increased the IVGP of wheat straw and wood chips. Effects on IVGP were similar for wheat straw and wood chips indicating that lignin content and 3D-structure of cell walls influence in vitro rumen degradability more than lignin composition.

关键词： Fungal treatment In vitro rumen degradability Lignocellulosic biomass Py-Gc/mS