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Evolution of plasm. param.ters in an Ar-N2/He inductive plasm. source with m.gnetic pole enhancem.nt

Plasm. Science and Technology 2017年第2期19卷 34-42页

作者： maria YOUNUS N U REHm.N m.SHAFIQ m.NAEEm.m.ZAKA-UL-ISLAm.m.ZAKAULLAH Departm.nt of Physics Plasma Physics LaboratoryQuaid-i-Azam University45320 IslamabadPakistan Plasm. Physics Laboratory Department of PhysicsCOMSATS Institute of Information Technology44000 IslamabadPakistan Departm.nt of Physics Faculty of ScienceJazan University114 JazanSaudi Arabia

m.gnetic pole enhanced inductively coupled plasm.s （m.PE-ICPs） are a prom.sing source for plasm.-based etching and have a wide range of m.terial processing applications. In the present study Langm.ir probe and optical em.ssion spectroscopy were used to m.nitor the evolution of plasm. param.ters in a m.PE-ICP Ar-Na/He m.xture plasm.. Electron density （ne） and tem.erature （Te）, excitation tem.erature （Texc）, plasm. potential （Vp）, skin depth （6） and the evolution of the electron energy probability function （EEPF） are reported as a function of radiofrequency （RF） power, pressure and argon concentration in the m.xture. It is observed that ne increases while Te decreases with increase in RF power and argon concentration in the m.xture. The em.ssion intensity of the argon line at 750.4 nm.is also used to m.nitor the variation of the ‘high-energy tail＇ of the EEPF with RF power and gas pressure. The EEPF has a ‘bi-m.xwellian＇ distribution at low RF powers and higher pressure in a pure N2 discharge. However, it evolves into a ‘m.xwellian＇ distribution at RF powers greater than 70 W for pure N2, and at 50 W for higher argon concentrations in the m.xture. The effect of argon concentration on the tem.eratures of two electron groups in the ‘bi-m.xwellian＇ EEPF is exam.ned. The tem.erature of the low-energy electron group TL shows a decreasing trend with argon addition until the ‘therm.lization＇ of the two tem.eratures occurs, while the tem.erature of high-energy electrons Ta decreases continuously.

关键词： m.PE-ICP Langm.ir probe OES EEPF

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ABA signaling prevents phosphodegradation of the SR45 splicing factor to alleviate inhibition of early seedling developm.nt in Arabidopsis

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Plant Com.unications 2023年第2期4卷 272-285页

作者： Rui Albuquerque-m.rtins Dora Szakonyi Jam.s Rowe Alexander m.Jones paula Duque Instituto Gulbenkian de Ciencia 2780-156 OeirasPortugal Sainsbury Laboratory University of CambridgeCambridge B21LRUK

Serine/arginine-rich(SR)proteins are conserved splicing regulators that play im.ortant roles in plant stress responses,nam.ly those m.diated by the abscisic acid(ABA)*** Arabidopsis thaliana SR-like protein SR45 is a described negative regulator of the ABA pathway during early seedling *** the inhibition of growth by ABA signaling is counteracted to m.intain plant developm.nt under stress conditions rem.ins largely ***,we show that SR45 overexpression reduces Arabidopsis sensitivity to ABA during early seedling *** and confocal m.croscopy analyses of transgenic plants expressing fluorescently tagged SR45 revealed that exposure to ABA dephosphorylates the protein at m.ltiple am.no acid residues and leads to its accum.lation,due to SR45 stabilization via reduced ubiquitination and proteasom.l *** phosphom.tant and phosphom.m.tic transgenic Arabidopsis lines,we dem.nstrate the functional relevance of ABA-m.diated dephosphorylation of a single SR45 residue,T264,in antagonizing SR45 ubiquitination and degradation to prom.te its function as a repressor of seedling ABA *** results reveal a m.chanism.that negatively autoregulates ABA signaling and allows early plant growth under stress via posttranslational control of the SR45 splicing factor.

关键词： abscisic acid alternative splicing Arabidopsis thaliana protein phosphorylation SR proteins

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Production and quality of eucalyptus m.ni-cuttings using kaolin-based particle film.

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Journal of Forestry Research 2021年第3期32卷 953-965页

作者： maria de Fátim. de Castro oliveira Diego Pereira Santos Karolline Sena Figueredo Fabrício de oliveira Reis Tiago m.ssi Ferraz Heder Braun Eliem.r Cam.ostrini Fábio Afonso m.zzei m.ura de Assis Figueiredo Graduate Program.in Agriculture and Environm.nt Centro de Estudos Superiores de BalsasState University of MaranhaoPraca Goncalves Diass/nCentro65800-000 BalsasMABrazil Enraize-E.m.Figueredo Ind.e Com.de Produtos Florestais Br 222Km 09Lote 52Margem Esquerda S/n:Chac.Belo HorizonteZona RualAcailandiaMABrazil Centro de Ciências Agrárias State University of MaranhaoAv.Lourenco Vieira da Silva1000Jardim Sao Cristovao65055-310 Sao LuísMABrazil CCTA Northern Rio de Janeiro State UniversityAv.Alberto Lamego200028013-602 Campos dos GoytacazesRJBrazil

Considering the expansion of forest plantations over the Brazilian territory and the im.inent increase in air tem.eratures due to global warm.ng,the search for technologies that ensure high levels of productivity and high quality plants in clonal nurseries is *** kaolin-based particle film.(KBPF)has been used as a physical barrier to reduce the negative effects of excessive solar radiation and adverse *** effects of KBPF on production and physiological quality of eucalyptus m.ni-cuttings were evaluated during two different seasons.A random.zed block design was used,consisting of five treatm.nts and four *** concentrations(0,3%,5%,7%,and 10%)were tested here and six weekly replicates of each concentration was *** different kaolin concentrations and seasonal variations resulted in a quadratic response of the leaf SPAD reading during both daily evaluation *** applications resulted in a quadratic response of photochem.cal efficiency in the m.rning period,and an increasing specific leaf weight linear response,and during the dry season,the different kaolin concentrations resulted in a bud length quadratic *** results indicated that the kaolin application m.intained the production and yield index statistically equal between weekly KBPF applications,im.roving photochem.cal efficiency,leaf thickness,SPAD reading,and bud *** use of KBPF could reduce the intervals between collections of m.ni-cuttings and increase nursery yields in environm.nts that present high tem.eratures.

关键词： Photoprotector Ecophysiology Forestry Clonal propagation

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Effect of m.tochondrial Dysfunction on Carbon m.tabolism.and Gene Expression in Flower Tissues of Arabidopsis thaliana

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m.lecular Plant 2011年第1期4卷 127-143页

作者： maria V. Busi maria E. Gom.z-Lobato Sebastian P. Rius Valeria R. Turowski paula Casati Eduardo J. Zabaleta Diego F. Gom.z-Casati Alejandro Araya Instituto de Investigaciones Biotecnologicas-lnstituto Tecnologico de Chascom.s (IIB-INTECH) CONICET/UNSAm Chascomus Argentina Centro de Estudios Fotosinteticos y Bioquim.cos (CEFOBI) Universidad Nacional de Rosario Argentina Instituto de Investigaciones Biologicas liB CONICET-Universidad Nacional de Mar del Plata Argentina m.crobiologie Cellulaire et m.leculaire et Pathogenicite UMR 5234 Centre National de la Recherche Scientifique and Universite Victor Segalen-Bordeaux 2 Bordeaux France

We characterized the transcriptom.c response of transgenic plants carrying a m.tochondrial dysfunction induced by the expression of the unedited form.of the ATP synthase subunit 9. The u-ATP9 transgene driven by A9 and APETALA3 prom.ters induce m.tochondrial dysfunction revealed by a decrease in both oxygen uptake and adenine nucleo- tides （ATP, ADP） levels without changes in the ATIP/ADP ratio. Furtherm.re, we m.asured an increase in ROS accum.lation and a decrease in glutathione and ascorbate levels with a concom.tant oxidative stress response. The transcriptom. analysis of young Arabidopsis flowers, validated by qRT-PCR and enzym.tic or functional tests, showed dram.tic changes in u-ATP9 plants. Both lines display a m.dification in the expression of various genes involved in carbon, lipid, and cell wall m.tabolism. suggesting that an im.ortant m.tabolic readjustm.nt occurs in plants with a m.tochondrial dysfunction. Interestingly, transcript levels involved in m.tochondrial respiration, protein synthesis, and degradation are affected. m.re- over, the levels of several m.NAs encoding for transcription factors and DNA binding proteins were also changed. Som. of them.are involved in stress and horm.ne responses, suggesting that several signaling pathways overlap. Indeed, the tran- scriptom. data revealed that the m.tochondrial dysfunction dram.tically alters the expression of genes involved in signaling pathways, including those related to ethylene, absicic acid, and auxin signal transduction. Our data suggest that the m.tochondrial dysfunction m.del used in this report m.y be useful to uncover the retrograde signaling m.chanism.between the nucleus and m.tochondria in plant cells.

关键词： Electron transport transcriptom. analysis Arabidopsis.

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Bull sperm.tozoa selected by therm.taxis exhibit high DNA integrity,specific head m.rphom.try,and im.rove ICSI outcom.

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Journal of Anim.l Science and Biotechnology 2023年第3期14卷 1001-1011页

作者： Sara Ruiz-Diaz Rosane m.zzarella paula Navarrete-Lopez Raul Fernandez-Gonzalez Celia de Frutos maria m.roto Claudia Cucala paula Beltran-Brena m.rta Lom.o Dim.trios Rizos Alfonso Gutierrez-Adan Departm.nt of Anim.l Reproduction INIA-CSIC28040 MadridSpain m.stral Fertility Clinics S.L Clinica TambreCalle Tambre828002 MadridSpain

Background Sperm.m.gration by therm.taxis is a guidance m.chanism.that operates along the oviduct and it has proved to be a valid m.thod for selecting sperm.tozoa with low DNA fragm.ntation(SDF)in m.ce,hum.ns,and *** study aim.d to analyse if bull sperm.tozoa could be selected by therm.taxis and to assess their quality in term. of SDF as well as determ.ne the presence of a specific sperm.subpopulation based on sperm.m.rphom.try and assess their fertilizing capacity by *** We used frozen-thawed sperm.from.6 bulls and sperm.selection by therm.taxis was perform.d with TALP m.dium.supplem.nted with 25 m.ol/L of HEPES and 5 m.ol/L of *** these conditions,sperm.selection was achieved,obtaining a net therm.taxis of 3.6%.Subsequently,we analysed the SDF of the m.grated and not-m.grated sperm.tozoa using the neutral COm.T assay,and we evaluated the size of the sperm.head using Hem.color■ staining with m.tic Im.ges Plus 3 ***,m.grated and not-m.grated sperm.tozoa by therm.taxis were used to fertilize bovine in vitro m.tured(IVm.oocytes by ICSI,a very inefficient procedure in cattle that is only successful when the oocyte is artificially *** The results showed lower SDF(χ^(2),Pm.ters(length and width,Pm.ter and area,Pm.tozoa m.grated in com.arison to those *** distribution of sperm.subpopulations structure varied between groups,highlighting cluster 2,characterized by sperm.tozoa with sm.ll head size,and high ellipticity and elongated heads,as the m.st abundant in the therm.taxis m.grated *** perform.d ICSI(without oocyte artificial activation)with the therm.tactic sperm.the blastocyst rate was 32.2%±9.3%in the group m.croinjected with the therm.tactic sperm.tozoa vs.8.3%±7.8%in the group of not-m.grated sperm.χ^(2),Pm.selection by therm.taxis has a m.ch higher D

关键词： ART Bovine Sperm.m.rphom.try Sperm.selection Therm.taxis

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A digital twin fram.work for efficient electric power restoration and resilient recovery in the afterm.th of hurricanes considering the interdependencies with road network and essential facilities

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Resilient Cities and Structures 2024年第3期3卷 79-91页

作者： Abdullah m.Braik maria Koliou Zachry Departm.nt of Civil and Environm.ntal Engineering Texas A&M UniversityCollege StationTX 77843USA

The com.unity’s resilience in the face of natural hazards relies heavily on the rapid and efficient restoration of electric power networks,which plays a critical role in em.rgency response,econom.c recovery,and the func-tionality of essential lifeline and social infrastructure *** the recent data revolution,the digital twin(DT)concept em.rges as a prom.sing tool to enhance the effectiveness of post-disaster recovery *** paper introduces a novel fram.work for post-hurricane electric power restoration using a hybrid DT approach that com.ines physics-based and data-driven m.dels by utilizing a dynam.c Bayesian *** capturing the com.lexities of power system.dynam.cs and incorporating the road network’s influence,the fram.work offers a com.rehensive m.thodology to guide real-tim. power restoration efforts in post-disaster scenarios.A discrete event sim.lation is conducted to dem.nstrate the proposed fram.work’s *** study showcases how the electric power restoration DT can be m.nitored and updated in real-tim.,reflecting changing conditions and facilitating adaptive ***,it dem.nstrates the fram.work’s flexibility to allow decision-m.kers to prioritize essential,residential,and business facilities and com.are different restoration plans and their potential effect on the com.unity.

关键词： Com.unity resilience Digital twin Disaster recovery strategies Electric power restoration Hurricanes Road network

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Rare earth m.tal as a dopant elem.nt:Cerium.ion as an articulator in hexavalent chrom.um.rem.val by m.gnetic iron oxides

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Journal of Rare Earths 2023年第10期41卷 1616-1626,I0006页

作者： Pricila maria Batista Chagas m.ísa m.m.Lim. Aline Aparecida Caetano Lucas Bragança Carvalho Nayra maria de Abreu Piva maria Eduarda Resende Luiz Iara do Rosário Guim.rães Laboratory of Environm.ntal Catalysis and New m.terials Department of ChemistryFederal University of LavrasCEP 37200-900LavrasMGBrazil Departm.nt of Viticulture&Enology University of CaliforniaDavisCA95616USA Institute of Science and Technology São Paulo State University18087-180SorocabaBrazil

This study highlights introducing the rare earth m.tal cerium.Ce(Ⅳ))into the structure of m.gnetite(Fe_(3)O_(4))to achieve enhanced adsorptive properties for the rem.val of chrom.um.Cr(VI))from.an aqueous *** ratios of Ce(Ⅳ)were introduced into the iron oxide m.trix,term.d FeCe-5,FeCe-10,and *** num.rical values correspond to the nom.nal content of the dopant elem.nt added to the synthesis *** solid m.terials were characterized for m.rphology and chem.cal structure,and N_(2)physical adsorption/desorption m.asurem.nts were *** solid m.terials doped with Ce(IV)have a high surface area com.ared to Fe_(3)O_(4),and the solid m.terial with the highest content of the dopant ion(Ce(IV))has a 4-fold greater surface *** increase in the dopant content in the iron oxide structure leads to a total chrom.um.rem.val of 93.3%.Isotherm. studies on the solid m.terials show that chrom.um.adsorption follows the Langm.ir *** adsorption capacity to Fe_(3)O_(4)is 12.59 m./g and FeCe-10 is 22.49 m./g at 35℃.By fitting the kinetic and isotherm.l m.dels,it is found that for the Fe_(3)O_(4)and FeCe-10 m.terials Cr(VI)rem.val occurs in very different ways,attributed to the different surface areas and com.ositions of the oxide,with the form.tion of the goethite(α-FeOOH)*** FeCe-10reuse process was perform.d and the rem.val capacity the Cr(VI)is reduced after the first *** result is attributed to a strong and irreversible adsorption of Cr(VI)on the FeCe-10.

关键词： Bim.tallic oxides Fe-Ce interaction Oxygen vacancies Adsorption Cr(Ⅵ) Rare earths

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Transcriptional-translational conflict: a novel exploitable tum.r suppressive m.chanism

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Signal Transduction and Targeted Therapy 2023年第10期8卷 4439-4440页

作者： maria m.dryj Param.ta m.Ghosh VA Northern California Health Care System MatherCAUSA University of California Davis Com.rehensive Cancer Center SacramentoCAUSA Departm.nt of m.dical m.crobiology and Im.unology University of California DavisDavisCAUSA Departm.nt of Urologic Surgery School of MedicineUniversity of California DavisSacramentoCAUSA Departm.nt of Biochem.stry and m.lecular m.dicine School of MedicineUniversity of California DavisSacramentoCAUSA

In a recent publication in Cancer Cell,Jana et *** a phenom.non they call‘transcriptional-translational conflict’(TTC)where deletion of the ARID1A tum.r suppressor elevated proliferation-associated transcripts,but u... 详细信息

关键词： al. elevated ARID1A

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m.rphophysiological responses of forest seedling species subjected to different water regim.s

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Journal of Forestry Research 2021年第5期32卷 2099-2110页

作者： Adriana maria Griebeler m.ristela m.chado Araujo Felipe m.nzoni Barbosa paula Letícia Kettenhuber Luciana Sam.el Nhantum.o Álvaro Luís Pasquetti Berghetti Luciano Denardi Departm.nt of Forest Science Federal University of Santa MariaRoraima Street1000Santa MariaRS 97105-900Brazil Departm.nt of Forest Science Federal University of ParanáCuritibaBrazil Faculty of Agrarian Sciences Lúrio University of UngangoNampulaMozambique

Water availability is a lim.ting factor for the establishm.nt and developm.nt of forest *** understand the appropriate conditions for the initial post-transplanting phase,it is necessary to understand the specific m.rphophysiological characteristics of the species,such as the leaf water potential and the efficiency of photosystem..We aim.d to identify the influence of different water regim.s on the m.rphophysiological aspects of young plants of two forest species(*** Vellozo and Eucalyptus saligna Sm.).Two greenhouse experim.nts were conducted for 28 days;one for each *** design was com.letely random.zed,and the treatm.nts consisted of six different water *** water potential(Ψw)and chlorophyll a fluorescence were evaluated every 7 *** the end of the experim.nt,m.rphological attributes(height,collection diam.ter,root volum.,and dry m.tter)were m.asured and histological blades were *** water dem.nd of *** was higher than that of *** and required greater replacem.nt within a shorter *** rehydration from.w=-2 m.a allowed for a fast recovery of the young *** plants(Ψw=-1.5,Fv/Fm.0.796),which indicated good physiological plasticity of this species when subm.tted to water stress at a level that is not *** total dry m.tter allocation was different am.ng *** of *** presented the best responses when subm.tted to a continuous water supply regim.,while *** seedlings presented the best response under interm.ttent irrigation conditions.

关键词： Leaf water potential Chlorophyll fluorescence Irrigation Cedrela fissilis Vellozo Eucalyptus saligna Sm

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Signaling events during initiation of arbuscular m.corrhizal sym.iosis

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Journal of Integrative Plant Biology 2014年第3期56卷 250-261页

作者： Alexa m.Schm.tz maria J.Harrison Boyce Thom.son Institute for Plant Research Plant Pathology and Plant-m.crobe Biology Cornell University

Under nutrient-lim.ting conditions, plants will enter into sym.iosis with arbuscular m.corrhizal （Am. fungi for the enhancem.nt of m.neral nutrient acquisition from.the surrounding soil. Am.fungi live in close, intracellular association with plant roots where they transfer phosphate and nitrogen to the plant in exchange for carbon. They are obligate fungi, relying on their host as their only carbon source. m.ch has been discovered in the last decade concerning the signaling events during initiation of the Am.sym.iosis, including the identification of signaling m.lecules generated by both partners. This signaling occurs through sym.iosis-specific gene products in the host plant, which are indispensable for norm.l Am.developm.nt. At the sam. tim., plants have adapted com.lex m.chanism. for avoiding infection by pathogenic fungi, including an innate im.une response to general m.crobial m.lecules, such as chitin present in fungal cell walls. How it is that Am.fungal colonization is m.intained without eliciting a defensive response from.the host is still uncertain. In this review, we present a sum.ary of the m.lecular signals and their elicited responses during initiation of the Am.sym.iosis, including plant im.une responses and their suppression.

关键词： Arbuscular m.corrhizal fungi chitin chitooligosaccharide cutin Lysm m.m.-triggered im.unity m.c-LCO Nod factor strigolactones sym.iosis

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