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Morphometry and Mineral Content in the Seeds and Soil of Two Species of Argemone L.(Papaveraceae)in the Central Part of the Chihuahuan Desert

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Phyton-International Journal of Experimental Botany 2024年第2期93卷 371-386页

作者： Perla Patricia Ochoa-García Jaime Sánchez-Salas ricardo Trejo-Calzada Jesús JosafathQuezada-Rivera fabián García-González Unidad Regional Universitaria de ZonasÁridas BermejilloUniversidad Autónoma ChapingoDurango35230México facultad de Ciencias Biológicas Universidad Juárez del Estado de DurangoGómez PalacioDurango35010México

The genus Argemone L.(Papaveraceae)is found widely distributed in Mexico’s Chihuahuan Desert(CD).Some species of this genus are of phytochemical or ethnobotanical *** are inedible plants considered as *** date they have not been broadly studied;thus,their ecology is,to our knowledge,*** present work was centered around carrying out a morphometric analysis and the determination of minerals in the soil and seeds of the wild populations of Argemone at sites belonging to two ecoregions of the CD in *** April 2021 and April 2022,seeds of Argemone spp.,and soil samples were collected at 10 sites of the *** seeds were selected under a randomized design,and weight,length,diameter,thickness,buoyancy,and mineral content were *** soil samples were obtained under the Mexican regulation NOM-021-RECNAT-2000,and determinations of mineral content,electrical conductivity,apparent density,and soluble anions were *** information obtained was grouped by variable,species,and place of *** statistical tests consisted of an ANOVA,Tukey means tests considering p≤0.05,and a Principal Components *** pleiacantha exhibited differences in terms of weight(f=54.79,p=0.001),length(f=90.83,p=0.001),thickness(f=104.89,p=0.001),and diameter(f=155.82,p=0.001),and the differences in Argemone mexicana were in weight(f=46.71,p=0.001),thickness(f=187.49,p=0.001),length(f=191.56,p=0.001),and diameter(f=215.83,p=0.001).The evaluated seeds reached their maximal imbibition velocity at 24 h of *** content of the micro-and macro-nutrients analyzed in the seeds and soil suggest a tight relation with the morphometric characteristics of the seeds.

关键词： Micronutrients agricultural area semiarid zone ecoregion buoyancy

Nutrient-hormone relations:Driving root plasticity in plants

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Molecular Plant 2022年第1期15卷 86-103页

作者： Zhongtao Jia ricardo f.h.Giehl Nicolaus von Wirén Molecular Plant Nutrition Department of Physiology&Cell BiologyLeibniz Institute of Plant Genetics and Crop Plant Research(IPK)Corrensstr.306466 Stadt SeelandOT GaterslebenGermany

Optimal plant development requires root uptake of 14 essential mineral elements from the *** the bioavailability of these nutrients underlies large variation in space and time,plants must dynamically adjust their root architecture to optimize nutrient access and *** information on external nutrient availability and whole-plant demand is translated into cellular signals that often involve phytohormones as intermediates to trigger a systemic or locally restricted developmental *** and extent of such local root responses depend on the overall nutritional status of the plant that is transmitted from shoots to roots in the form of phytohormones or other systemic long-distance *** integration of these systemic and local signals then determines cell division or elongation rates in primary and lateral roots,the initiation,emergence,or elongation of lateral roots,as well as the formation of root ***,we review the cascades of nutrient-related sensing and signaling events that involve hormones and highlight nutrient-hormone relations that coordinate root developmental plasticity in plants.

关键词： root development root plasticity nutrient sensing nutrient signaling plant hormones nutrient use efficiency

PDX1.1-dependent biosynthesis of vitamin B6 protects roots from ammonium-induced oxidative stress

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Molecular Plant 2022年第5期15卷 820-839页

作者： Ying Liu Rodolfo A.Maniero ricardo f.h.Giehl Michael Melzer Priscille Steensma Gabriel Krouk Teresa B.fitzpatrick Nicolaus von Wirén Molecular Plant Nutrition Leibniz Institute of Plant Genetics and Crop Plant Research(IPK)Corrensstrasse 306466 GaterslebenGermany Structural Cell Biology Leibniz Institute of Plant Genetics and Crop Plant Research(IPK)Corrensstrasse 306466 GaterslebenGermany Department of Botany and Plant Biology University of Geneva1211 GenevaSwitzerland BPMP Universitéde MontpellierCNRSINRASupAgroMontpellierFrance State Key Laboratory of Crop Genetics and Germplasm Enhancement College of Resources and Environmental SciencesNanjing Agricultural UniversityNanjing 210095China

Despite serving as a major inorganic nitrogen source for plants,ammonium causes toxicity at elevated con-centrations,inhibiting root elongation early *** previous studies have shown that ammonium-inhibited root development relates to ammonium uptake and formation of reactive oxygen species(ROS)in roots,it remains unclear about the mechanisms underlying the repression of root growth and how plants cope with this inhibitory effect of *** this study,we demonstrate that ammonium-induced apo-plastic acidification co-localizes with fe precipitation and hydrogen peroxide(h_(2)O_(2))accumulation along the stele of the elongation and differentiation zone in root tips,indicating fe-dependent ROS *** screening ammonium sensitivity in T-DNA insertion lines of ammonium-responsive genes,we identified PDX1.1,which is upregulated by ammonium in the root stele and whose product catalyzes de novo biosyn-thesis of vitamin *** growth of pdx1.1 mutants is hypersensitive to ammonium,while chemical complementation or overexpression of PDX1.1 restores root *** salvage strategy requires non-phosphorylated forms of vitamin B6 that are able to quench ROS and rescue root growth from ammo-nium ***,these results suggest that PDX1.1-mediated synthesis of non-phosphorylated B6 vitamers acts as a primary strategy to protect roots from ammonium-dependent ROS formation.

关键词： ammonium nutrition apoplastic ph fe mobilization root elongation pyridoxine ROS scavenging

A Critical Role of AMT2;1 in Root-To-Shoot Translocation of Ammonium in Arabidopsis

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Molecular Plant 2017年第11期10卷 1449-1460页

作者： ricardo f.h. Giehl Alberto M. Laginha fengying Duan Doris Rentsch Lixing Yuan Nicolaus von Wirén Department of Physiology and Cell Biology Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Corrensstrasse 3 06466 Gatersleben Germany Institute of Plant Sciences University of Bern Aitenbergrain 21 3013 Bern Switzerland Key Lab of Plant-Soil Interaction MOE College of Resources and Environmental Sciences China Agricultural University Beijing 100193 China

Ammonium uptake in plant roots is mediated by AMT/MEP/Rh-type ammonium transporters. Out of five AMTs being expressed in Arabidopsis roots, four AMT1-type transporters contribute to ammonium uptake, whereas no physiological function has so far been assigned to the only homolog belonging to the MEP subfamily, AMT2;1. Based on the observation that under ammonium supply, the transcript levels of AMT2;1 increased and its promoter activity shifted preferentially to the pericycle, we assessed the contribution of AMT2;1 to xylem loading. When exposed to ^15N-labeled ammonium, amt2;1 mutant lines translocated less tracer to the shoots and contained less ammonium in the xylem sap. Moreover, in an amtl;1 amtl;2 amtl ;3 amt2;1 quadruple mutant （qko）, co-expression of AMT2;1 with either AMT1;2 or AMT1;3 significantly enhanced ^15N translocation to shoots, indicating a cooperative action between AMT2;1 and AMT1 transporters. Under N deficiency, proAMT2;1-GfP lines showed enhanced promoter activity predominantly in cortical root cells, which coincided with elevated ammonium influx conferred by AMT2;1 at millimolar sub- strate concentrations. Our results indicate that in addition to contributing moderately to root uptake in the low-affinity range, AMT2;1 functions mainly in root-to-shoot translocation of ammonium, depending on its Cell-type-specific expression in response to the plant nutritional status and to local ammonium gradients.

关键词： nitrogen uptake nitrogen translocation ammonium assimilation xylem loading ammonia transport ammonium influx

Cubosome nanoparticles for enhanced delivery of mitochondria anticancer drug elesclomol and therapeutic monitoring via sub-cellular NAD(P) h multi-photon fluorescence lifetime imaging

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Nano Research 2019年第5期12卷 991-998页

作者： Ana R.faria Oscar f.Silvestre Christian Maibohm ricardo M.R.Adao Bruno f.B.Silva Jana B.Nieder Department of Nanophotonics Ultrafast Bio- and Nanophotonics GroupINL - International Iberian Nanotechnology LaboratoryAv.Mestre Jose Veiga s/n4715-330 BragaPortugal Department of Life Sciences INL-International Iberian Nanotechnology LaboratoryAv.Mestre Jose Veiga s/n4715-330 BragaPortugal

Elesclomol (ELC) is an anticancer drug inducing mitochondria cytotoxicity through reactive oxygen ***,for the first time,we encapsulate the poorly water soluble ELC in monoolein-based cubosomes stabilized with Pluronic *** uptake and nanocarrier accumulation close to the mitochondria with sub-micrometer distance is identified via three-dimensional (3D) confocal microscopy and edge-to-edge compartment *** monitor the therapeutic effect of the ELC nanocarrier,we apply for the first time,label-free time-lapse multi-photon fluorescence lifetime imaging microscopy (MP-fLIM) to track NAD(P)h cofactors with sub-cellular resolution on live cells exposed to an anticancer *** in vitro cytotoxicity is verified when loading the pre-complexed ELC with copper (ELC-Cu).Importantly,for equivalent copper concentration,cubosomes loaded with ELC-Cu show higher cytotoxicity compared to the free *** novel nanocarrier shows promising features for systemic ELC-Cu administration,and furthermore we establish the MP-fLIM technique for the assessment of anticancer drug delivery systems.

关键词： cubosomes mitoch on dria reactive oxyge n species elesclomol NAD(P)h fluoresce nee lifetime anticancer therapy

Distinguishing the Regional Atmospheric Controls on Precipitation Isotopic Variability in the Central-Southeast Portion of Brazil

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Advances in Atmospheric Sciences 2022年第10期39卷 1693-1708,I0018-I0020页

作者： Vinícius dos SANTOS Peter MARShALL fLEMING Luís hENRIQUE MANCINI Stela DALVA SANTOS COTA Graziele Beatriz de LIMA Rafaela RODRIGUES GOMES Roberto Eduardo KIRChhEIM ricardo SANChÉZ-MURILLO Didier GASTMANS São Paulo State University(UNESP) Environmental Studies Center.Av.24ABased1515-Bela Vista13.506-900Rio Claro(SP)Brazil Center for the Development of the Nuclear Technology(CDTN-CNEN) Av.Presidente Antônio Carlos6.627Campus da UFMG-Pampulha31270-90Belo Horizonte(MG)Brazil Universidade de Brasília-UnB Instituto de GeociênciasLaboratório de Isótopos Estáveis.Campus"Darcy Ribeiro"Asa Norte70.910-900Brasília(DF)Brasil hydrology and Territorial Management Directory(DhT) The Geological Survey of Brazil(CPRM-SGB)São Paulo(SP)Brazil University of Texas at Arlington Earth and Environmental Sciences Department500 Yates StreetArlingtonTexas76019USA Stable Isotopes Research Group and Water Resources Management Laboratory Universidad NacionalHerediaCosta Rica

Precipitation isotope ratios(O and h)record the history of water phase transitions and fractionation processes during moisture transport and rainfall ***,we evaluated the isotopic composition of precipitation over the central-southeastern region of Brazil at different *** isotopic compositions were associated with classical effects(rainfall amount,seasonality,and continentality),demonstrating the importance of vapor recirculation processes and different regional atmospheric systems(South American Convergence Zone-SACZ and Cold fronts-Cf).While moisture recycling and regional atmospheric processes may also be observed on a daily timescale,classical effects such as the amount effect were not strongly correlated(δ^(18)O-precipitation rate r≤-0.37).Daily variability revealed specific climatic features,such asδ^(18)O depleted values(~-6‰to-8‰)during the wet season were associated with strong convective activity and large moisture *** isotopic analysis revealed the role of different moisture sources and transport *** ratios combined with d-excess explain how atmospheric recirculation processes interact with convective activity during rainfall formation *** findings provide a new understanding of rainfall sampling timescales and highlight the importance of water isotopes to decipher key hydrometeorological processes in a complex spatial and temporal context in central-southeastern Brazil.

关键词： precipitation stable water isotopes d-excess moisture source and transport southern Atlantic Ocean and Amazon

Impact of severe plastic deformation on kinetics and thermodynamics of hydrogen storage in magnesium and its alloys

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Journal of Materials Science & Technology 2023年第15期146卷 221-239页

作者： Kaveh Edalati Etsuo Akiba Walter J.Botta Yuri Estrin ricardo floriano Daniel fruchart Thierry Grosdidier Zenji horita Jacques huot hai-Wen Li huai-Jun Lin Ádám Révész Michael J.Zehetbauer WPI International Institute for Carbon-Neutral Energy Research(WPI-I2CNER)Kyushu UniversityFukuokaJapan International Research Center for hydrogen Energy Kyushu UniversityFukuokaJapan Departamento de Engenharia de Materiais Universidade Federal de São CarlosSao Carlos-SPBrazil Department of Materials Science and Engineering Monash UniversityClaytonVIC 3800Australia Department of Mechanical Engineering the University of Western AustraliaCrawleyWA 6009Australia School of Applied Sciences University of Campinas(UNICAMP)LimeiraSão PauloBrazil Institut Néel CNRS&UGA38042 GrenobleFrance JOMI-LEMAN SA 74890 FessyFrance Universitéde Lorraine Laboratory of Excellence on Design of Alloy Metals for low-mass Structures(DAMAS)MetzF-57070France Universitéde Lorraine Laboratoire d’Etude des Microstructures et de Mécanique des Matériaux(LEM3 UMR 7239)MetzF-57070France Graduate School of Engineering Kyushu Institute of TechnologyKitakyushuJapan Magnesium Research Center Kumamoto UniversityKumamotoJapan Synchrotron Light Application Center Saga UniversitySagaJapan hydrogen Research Institute Universitédu QuébecàTrois-Rivières3351 des ForgesTrois-RivièresQC G9A 5H7Canada hefei General Machinery Research Institute Hefei 230031China Institute of Advanced Wear&Corrosion Resistance and functional Materials Jinan UniversityGuangzhou 510632China Department of Materials Physics Eötvös UniversityBudapestH-1518P.O.B.32BudapestHungary faculty of Physics University of ViennaBoltzmanngasse 5A-1090 WienAustria

Magnesium and its alloys are the most investigated materials for solid-state hydrogen storage in the form of metal hydrides,but there are still unresolved problems with the kinetics and thermodynamics of hydrogenation and dehydrogenation of this group of *** plastic deformation(SPD)methods,such as equal-channel angular pressing(ECAP),high-pressure torsion(hPT),intensive rolling,and fast forging,have been widely used to enhance the activation,air resistance,and hydrogenation/dehydrogenation kinetics of Mg-based hydrogen storage materials by introducing ultrafine/nanoscale grains and crystal lattice *** severely deformed materials,particularly in the presence of alloying additives or second-phase nanoparticles,can show not only fast hydrogen absorption/desorption kinetics but also good cycling *** was shown that some materials that are apparently inert to hydrogen can absorb hydrogen after SPD ***,the SPD methods were effectively used for hydrogen binding-energy engineering and synthesizing new magnesium alloys with low thermodynamic stability for reversible low/room-temperature hydrogen storage,such as nanoglasses,high-entropy alloys,and metastable phases including the high-pressureγ-Mgh2 *** work reviews recent advances in the development of Mg-based hydrogen storage materials by SPD processing and discusses their potential in future applications.

关键词： Severe plastic deformation(SPD) Nanostructured materials Ultrafine-grained(UfG)materials Magnesium hydride(Mgh_(2)) Magnesium-based alloys hydrogen absorption hydrogenation kinetics hydrogen storage thermodynamics

ITPK1 is an InsP_(6)/ADP phosphotransferase that controls phosphate signaling in Arabidopsis.

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Molecular Plant 2021年第11期14卷 1864-1880页

作者： Esther Riemer Danye Qiu Debabrata Laha Robert K.harmel Philipp Gaugler Verena Gaugler Michael frei Mohammad-Reza hajirezaei Nargis Parvin Laha Lukas Krusenbaum Robin Schneider Adolfo Saiardi Dorothea fiedler henning J.Jessen Gabriel Schaaf ricardo f.h.Giehl Department of Plant Nutrition Institute of Crop Science and Resource ConservationRheinische Friedrich-Wilhelms-Universitat Bonn53115 BonnGermany Department of Chemistry and Pharmacy and CIBSS-Centre for Integrative Biological Signalling Studies Albert-Ludwigs University Freiburg79104 FreiburgGermany Medical Research Council Laboratory for Molecular Cell Biology(MRC-LMCB) University College LondonLondon WC1E 6BTUK Department of Biochemistry Indian Institute of ScienceBengaluruKarnataka 560012India Leibniz-forschungsinstitut fur Molekulare Pharmakologie 13125 BerlinGermany Department of Chemistry Humboldt Universitat zu Berlin12489 BerlinGermany Institute of Agronomy and Crop Physiology Justus-Liebig University Giessen35392 GiessenGermany Department of Physiology&Cell Biology Leibniz-lnstitute of Plant Genetics and Crop Plant Research06466 GaterslebenGermany

In plants, phosphate (Pi) homeostasis is regulated by the interaction of PhR transcription factors with stand-alone SPX proteins, which act as sensors for inositol pyrophosphates. here, we combined different methods to obtain a comprehensive picture of how inositol (pyro)phosphate metabolism is regulated by Pi and dependent on the inositol phosphate kinase ITPK1. We found that inositol pyrophosphates are more responsive to Pi than lower inositol phosphates, a response conserved across kingdoms. With CE-ESI-MS we could separate different InsP7 isomers in Arabidopsis and rice, and identify 4/6-InsP7 and a PP-InsP4 isomer hitherto not reported in plants. We found that the inositol pyrophosphates 1/3-InsP7, 5-InsP7 and InsP8 increase severalfold in shoots after Pi resupply and that tissue-specific accumulation of inositol pyrophosphates relies on ITPK1 activities and MRP5-dependent InsP6 compartmentalization. Notably, ITPK1 is critical for Pi-dependent 5-InsP7 and InsP8 synthesis in planta and its activity regulates Pi starvation responses in a PhR-dependent manner. furthermore, we demonstrate that ITPK1-mediated conversion of InsP6 to 5-InsP7 requires high ATP concentrations and that Arabidopsis ITPK1 has an ADP phosphotransferase activity to dephosphorylate specifically 5-InsP7 under low ATP. Collectively, our study provides deeper insights into Pi-dependent changes in nutritional and energetic states with the synthesis of regulatory inositol pyrophosphates.

关键词： diphosphoinositol pentakisphosphate kinase inositol 1,3,4-trisphosphate 5/6-kinase 1 inositol phosphates inositol pyrophosphates phosphate homeostasis phosphate signaling

Kinetic analysis via mathematical modeling for ferrous iron oxidation in a class of SBR-type system

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Chinese Journal of Chemical Engineering 2019年第10期27卷 2472-2480页

作者： Edgar NTec-Caamal Refugio Rodríguez-Vázquez Luis GTorres-Bustillos ricardo Aguilar-López Center for Research and Advanced Studies of the National Polytechnic Institute Av.Instituto Politécnico Nacional No.2508Colonia San Pedro ZacatencoC.P.07360 Ciudad de México D.F.Mexico Interdisciplinary Professional Unit of Biotechnology-National Polytechnic Institute(UPIBI-IPN) Acueducto s/nLa Laguna TicománGustavo A.Madero07340Ciudad de MéxicoMexico

This paper analyses the oxidation of ferrous iron via chemical and biological means in a class of Sequential Batch Reactors(SBR-type).for this,a kinetic model for the study of iron oxidation system is proposed,followed by a parametric sensitivity analysis and a bifurcation analysis,which allow selecting the most influential kinetic parameters in order to ensure a suitable prediction capacity of the mathematical *** system consists of two SBR bioreactors,the first being used to produce hydrogen peroxide(h2O2)that is fed to a second reactor where the iron oxidation is carried out by chemical–biological *** predictions were compared with experimental data for the production of h2O2 and for ferrous iron oxidation,finding suitable correlation coefficients(r2 N 0.98)for each state *** bifurcation analysis showed the trajectories of the main variables,such as,biomass,h2O2 and ferrous iron,under the change of the most influential kinetic *** analysis demonstrates the usefulness of the constructed model to predict the kinetic behaviour of the SBR-type process.

关键词： Bifurcation analysis hydrogen peroxide Iron oxidation Modeling Simulation