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Soil organic carbon stocks in native forest of Argentina:a useful surrogate for mitigation and conservation planning under climate variability

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ecological Processes 2024年第1期13卷 3-24页

作者： pablo L.Peri Juan Gaitán Matías Mastrangelo Marcelo Nosetto pablo e.villagra ezequiel Balducci Martín Pinazo Roxana P.eclesia Alejandra Von Wallis Sebastián Villarino Francisco Alaggia Marina González Polo Silvina Manrique pablo A.Meglioli Julián Rodríguez-Souilla Martín Mónaco Jimena e.Chaves Ariel Medina Ignacio Gasparri eugenio Alvarez Arnesi María Paula Barral Axel von Müller Norberto M.Pahr Josefina Uribe echevarria Pedro Fernández Marina Morsucci Dardo López Juan Manuel Cellini Leandro Alvarez Ignacio Barberis Hernán Colomb Ludmila La Manna Sebastián Barbaro Cecilia Blundo Ximena Sirimarco Laura Cavallero Gualberto Zalazar Guillermo Martínez Pastur Instituto Nacional de Tecnología Agropecuaria (INTA) Universidad Nacional de la Patagonia Austral (UNPA) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Universidad Nacional de Luján Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Grupo de estudio de Agroecosistemas y Paisajes Rurales (GeAP) Universidad Nacional de Mar del Plata Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET ) CCT San Luis Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Instituto Argentino de Nivología Glaciología y Ciencias Ambientales (IANIGLA) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Universidad Nacional de Cuyo Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Instituto de Investigaciones en energía No Convencional CCT Salta-JujuyConsejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Laboratorio de Recursos Agroforestales Centro Austral de Investigaciones Científicas (CADIC) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Dirección Nacional de Bosques Ministerio de Ambiente y Desarrollo Sostenible de la Nación Instituto de ecología Regional Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET )Universidad Nacional de Tucumán Universidad Nacional de Rosario Instituto de Investigaciones en Ciencias Agrarias de Rosario Centro Científico Tecnológico CONICET Grupo de estudio de Agroecosistemas y Paisajes Rurales (GeAP) Universidad Nacional de Mar del Plata Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Laboratorio de Investigaciones en Maderas (LIMAD) Universidad Nacional de La Plata (UNLP) Administración de Parques Nacionales (APN) Parque Nacional Los Alerces Centro de estudios Ambientales Integrados (CeAI) Universidad Nacional de la Patagonia San Juan Bosco (UNPASJB) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET )

Background The nationally determined contribution（NDC） presented by Argentina within the framework of the Paris Agreement is aligned with the decisions made in the context of the United Nations Framework Conven-tion on Climate Change（UNFCCC） on the reduction of emissions derived from deforestation and forest degradation, as well as forest carbon conservation（ReDD+）. In addition, climate change constitutes one of the greatest threats to forest biodiversity and ecosystem services. However, the soil organic carbon（SOC） stocks of native forests have not been incorporated into the Forest Reference emission Levels calculations and for conservation planning under cli-mate variability due to a lack of information. The objectives of this study were:（i） to model SOC stocks to 30 cm of native forests at a national scale using climatic, topographic and vegetation as predictor variables, and（ii） to relate SOC stocks with spatial–temporal remotely sensed indices to determine biodiversity conservation concerns due to threats from high inter-annual climate *** We used 1040 forest soil samples（0–30 cm） to generate spatially explicit estimates of SOC native forests in Argentina at a spatial resolution of approximately 200 m. We selected 52 potential predictive environmental covari-ates, which represent key factors for the spatial distribution of SOC. All covariate maps were uploaded to the Google earth engine cloud-based computing platform for subsequent modelling. To determine the biodiversity threats from high inter-annual climate variability, we employed the spatial–temporal satellite-derived indices based on enhanced Vegetation Index（eVI） and land surface temperature（LST） images from Landsat *** SOC model（0–30 cm depth） prediction accounted for 69% of the variation of this soil property across the whole native forest coverage in Argentina. Total mean SOC stock reached 2.81 Pg C（2.71–2.84 Pg C with a probability of 90%） for a total area of 460,790 km2,

关键词： Soil organic carbon Biodiversity Native forest Climate change mitigation Modelling Resilience

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Spatial and temporal patterns of forest fires in the Central Monte:relationships with regional climate

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ecological Processes 2024年第01期13卷 66-79页

作者： pablo eugenio villagra erica Cesca Leandro Manuel Alvarez Silvia Delgado Ricardo Villalba Instituto Argentino de Nivología Glaciología y Ciencias Ambientales–CONICeT-CCT Mendoza Facultad de Ciencias Agrarias Universidad Nacional de Cuyo

Background Natural and anthropogenic wildfires burn large areas of arid and semi-arid forests with significant socio-economic and environmental impacts. Fire regimes are controlled by climate, vegetation type, and anthropogenic factors such as ignition sources and human-induced disturbances. Projections of climate and land-use change suggest that these controlling factors will change, altering fire regimes in the near future. In the southern Central Monte, Mendoza, Argentina, the factors that modulate the fire temporal and spatial variability are poorly understood. We reconstructed the fire history of southeast of Mendoza from 1984 to 2023 and investigated the relationships between fire extent and climate variability at seasonal and interannual scales. Burned areas were determined using Google earth engine by processing Landsat 5-TM, Landsat 7-eTM+, and Landsat 8-OLI-TIRS sensor *** The region exhibited high spatial and temporal variability in fire occurrence, being a mosaic of areas with different fire histories and recovery times. Between 1985 and 2023, fire recurrence ranged from sites unburned to sites with up to 14 fires. The occurrence of large fires was strongly favored by a combination of a year with abundant spring–early summer precipitation, which favors fuel accumulation, followed by a year of low spring–early summer precipitation. Precipitation and burnt area showed a very pronounced 6–7 year cycle, suggesting a dominant climatic control on fire *** Fire distribution in southeastern Mendoza forests is not homogeneous, resulting in a mosaic of patches with different fire histories. This heterogeneity may be related to vegetation patterns and land use. The temporal variability of fires is strongly influenced by climate variability, which would promote fuel production and subsequent drying. Large fires are concentrated in periods of high interannual precipitation variability. Climate change scenarios predict an increase in tem

关键词： Fire recurrence Fire mapping Recovery time Climate Dry forest Wildfire

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Quality evaluation of Nothofagus pumilio seeds linked to forest management and climatic events

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ecological Processes 2024年第1期13卷 98-107页

作者： Julian Rodríguez-Souilla Jimena e.Chaves María Vanessa Lencinas Juan Manuel Cellini Fidel A.Roig pablo L.Peri Guillermo Martinez Pastur Laboratorio de Recursos Agroforestales Centro Austral de Investigaciones Científicas (CADIC) Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET ) Laboratorio de Investigaciones en Maderas (LIMAD) Universidad Nacional de la Plata (UNLP) Instituto Argentino de Nivología Glaciología y Ciencias Ambientales (IAN-IGLA) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Instituto Nacional de Tecnología Agropecuaria (INTA) Universidad Nacional de la Patagonia Austral (UNPA) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET )

Background Forest ecosystems undergo significant transformations due to harvesting and climate fluctuations, emphasizing the critical role of seeding in natural regeneration and long-term structural preservation. Climate change further amplifies these dynamics, affecting phenology across species and regions. In Tierra del Fuego(Argentina), Nothofagus pumilio(lenga) forests represent the most important timber resource, and it is managed through different silvicultural strategies. This species demonstrates notable post-disturbance regeneration, yet seed fall exhibits signifi-cant variability, leading to variations in seed quality(e.g., viability). This study aims to assess fluctuations in N. pumilio seed quality, determine how it varies concerning forest management strategies, annual productivity, and the co-occurrence of climatic phenomena including el Ni?o-Southern Oscillation(eNSO) and the Southern Annular Mode(SAM).Results Viable seeds represented 18.4% of the total, notably higher in unharvested than in managed areas. Con-versely, empty seeds were more prevalent in harvested areas(> 75%). Seed quality exhibited significant differences across silvicultural treatments, except for insect-predated seeds, which had similar proportions across all areas, though dispersed retention showed higher predation. When considering years with varying production levels, high-production years favoured full and viable seeds, particularly in unharvested forests and aggregated retention, while low-production years saw reduced viability across all treatments. Quadratic models revealed that viability increased with seed production, where unharvested forests achieved the highest values. Climate variability influenced seed proportions, where eNSO+/SAM+ promoting more full and viable seeds, while eNSO–/SAM+ favoured non-predated seeds, especially in unharvested *** Seed quality varies among treatments and years with different levels of seeding. Variations in seed qual-ity, l

关键词： Forest management Seeding Climate change extreme event Patagonia

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Plant triterpenoid saponins function as susceptibility factors to promote the pathogenicity of Botrytis cinerea

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Molecular Plant 2024年第7期17卷 1073-1089页

作者： Francisco J.escaray Amelia Felipo-Benavent Cristian J.Antonelli Begona Balaguer Maria Pilar Lopez-Gresa pablo Vera Instituto de Biologia Molecular y Celular de Plantas Universidad Politecnica de Valencia-C.S.l.CCiudad Politecnica de la InnovacionEdificio 8Eacceso GIngeniero Fausto Elios/n46022ValenciaSpain

The gray mold fungus Botrytis cinerea is a necrotrophic pathogen that causes diseases in hundreds of plant species,including high-value *** polyxenous nature and pathogenic success are due to its ability to perceive host signals in its *** this study,we found that laticifer cells of euphorbia lathyris are a source of susceptibility factors required by *** to cause ***,poor-in-latex(pil)mutants,which lack laticifer cells,show full resistance to this pathogen,whereas lot-of-latex mutants,which produce more laticifer cells,are *** S factors are triterpenoid saponins,which are widely distributed natural products of vast structural *** downregulation of laticifer-specific oxydosqualene cyclase genes,which encode the first committed step enzymes for triterpene and,therefore,saponin biosynthesis,conferred disease resistance to ***,the Medicago truncatula Iha-1 mutant,compromised in triterpenoid saponin biosynthesis,showed enhanced ***,the application of different purified triterpenoid saponins pharmacologically complemented the diseaseresistant phenotype ofpil and hla-1 mutants and enhanced disease susceptibility in different plant *** found that triterpenoid saponins function as plant cues that signal transcriptional reprogramming in ***,leading to a change in its growth habit and infection strategy,culminating in the abundant formation of infection cushions,the multicellular appressoria apparatus dedicated to plant penetration and biomass destruction in *** together,these results provide an explanation for how plant triterpenoid saponins function as disease susceptibility factors to promote *** pathogenicity.

关键词： euphorbia lathyris laticifer cell latex appressorium infection cushion necrotrophic fungi

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Promotion of structural plasticity in area V2 of visual cortex prevents against object recognition memory deficits in aging and Alzheimer's disease rodents

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Neural Regeneration Research 2024年第8期19卷 1835-1841页

作者： Irene Navarro-Lobato Mariam Masmudi-Martín Manuel F.López-Aranda Juan F.López-Téllez Gloria Delgado pablo Granados-Durán Celia Gaona-Romero Marta Carretero-Rey Sinforiano Posadas María e.Quiros-Ortega Zafar U.Khan Laboratory of Neurobiology Centro de Investigaciones Médico Sanitarias(CIMES)University of MalagaMalagaSpain Department of Medicine Faculty of MedicineUniversity of MalagaMalagaSpain Centro de Investigación Biomédica en Red de enfermedades Neurodegenerativas(CIBeRNeD) Institute of Health Carlos IIIMadridSpain the Donders Institute for Brain Cognition and Behaviour Radboud UniversityNijmegenThe Netherlands the Brain Metastasis Group National Cancer Research Centre(CNIO)MadridSpain the Department of Neurobiology University of California-Los AngelesLos AngelesCAUSA

Memory deficit,which is often associated with aging and many psychiatric,neurological,and neurodegenerative diseases,has been a challenging issue for *** till now,all potential drug candidates have failed to produce satisfa ctory ***,in the search for a solution,we found that a treatment with the gene corresponding to the RGS14414protein in visual area V2,a brain area connected with brain circuits of the ventral stream and the medial temporal lobe,which is crucial for object recognition memory(ORM),can induce enhancement of *** this study,we demonstrated that the same treatment with RGS14414in visual area V2,which is relatively unaffected in neurodegenerative diseases such as Alzheimer s disease,produced longlasting enhancement of ORM in young animals and prevent ORM deficits in rodent models of aging and Alzheimer’s ***,we found that the prevention of memory deficits was mediated through the upregulation of neuronal arbo rization and spine density,as well as an increase in brain-derived neurotrophic factor(BDNF).A knockdown of BDNF gene in RGS14414-treated aging rats and Alzheimer s disease model mice caused complete loss in the upregulation of neuronal structural plasticity and in the prevention of ORM *** findings suggest that BDNF-mediated neuronal structural plasticity in area V2 is crucial in the prevention of memory deficits in RGS14414-treated rodent models of aging and Alzheimer’s ***,our findings of RGS14414gene-mediated activation of neuronal circuits in visual area V2 have therapeutic relevance in the treatment of memory deficits.

关键词： behavioral performance brain-derived neurotrophic factor cognitive dysfunction episodic memory memory circuit activation memory deficits memory enhancement object recognition memory prevention of memory loss regulator of G protein signaling

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effect of Aspergillus niger prolyl endopeptidase in patients with celiac disease on a long-term gluten-free diet

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World Journal of Gastroenterology 2024年第11期30卷 1545-1555页

作者： Juan pablo Stefanolo Verónica Segura Martina Grizzuti Abel Heredia Isabel Comino Ana Florencia Costa Roberto Puebla María Paz Temprano Sonia Isabel Niveloni Gabriel de Diego María e Oregui edgardo Gustavo Smecuol Mauricio C de Marzi elena F Verdú Carolina Sousa Julio César Bai Small Bowel Section Department of MedicineGastroenterology Hospital of Buenos Aires“Dr.C.Bonorino Udaondo”Buenos Aires 1264Argentina Department of Microbiology and Parasitology Faculty of PharmacyUniversity of SevilleSeville 41080Spain Department of Medicine Dr.C.Bonorino Udaondo Gastroenterology HospitalBuenos Aires 1264Argentina Basic and Applied Research Group in Immunology and Bioactives(GIBAIB) Institute of Ecology and Sustainable Development(INEDES)National University of LujanLuján 6700Buenos AiresArgentina Department of Medicine Farncombe Family Digestive Health Research InstituteMcMaster UniversityHamilton L8S 4L8OntarioCanada Facultad de Medicina Universidad del SalvadorBuenos Aires C1051ABBArgentina

BACKGROUND The gluten-free diet(GFD)has limitations,and there is intense research in the development of adjuvant *** To examine the effects of orally administered Aspergillus niger prolyl endopeptidase protease(AN-PeP)on inadvertent gluten exposure and symptom prevention in adult celiac disease(CeD)patients following their usual *** This was an exploratory,double-blind,randomized,placebo-controlled trial that enrolled CeD patients on a long-term *** a 4-wk run-in period,patients were randomized to 4 wk of two AN-PeP capsules(GliadinX;AVI Research,LLC,United States)at each of three meals per day or *** endpoints were:(1)Average weekly stool gluten immunogenic peptides(GIP)between the run-in and end of treatments and between AN-PeP and placebo;(2)celiac symptom index(CSI);(3)CeD-specific serology;and(4)quality of *** samples were collected for GIP testing by eLISA every Tuesday and Friday during run-ins and *** Forty patients were randomized for the intention-to-treat analysis,and three were excluded from the per-protocol ***,628/640(98.1%)stool samples were *** was undetectable(es,and no differences between treatment arms were *** 0.5%of samples had GIP concentrations sufficiently high(>0.32μg/g)to potentially cause mucosal *** GIP concentration in the AN-PeP arm was 44.7%lower than in the run-in ***-third of patients exhibiting GIP>0.08μg/g during run-in had lower or undetectable GIP after AN-PeP *** with the run-in period,the proportion of symptomatic patients(CSI>38)in the AN-PeP arm was significantly lower(PeP did not result in changes in specific *** This exploratory study conducted in a real-life setting revealed high adherence to the *** AN-PeP treatment did not significantly reduce the overall GIP stool ***,given the observation of a significantly lower prevale

关键词： Celiac disease Aspergillus niger prolyl endoprotease Gluten immunogenic peptides Trial Symptoms Real-life trial

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effects of absolute fasting on reproduction and survival of the invasive apple snail Pomacea canaliculata in its native range

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Current Zoology 2016年第4期62卷 369-375页

作者： Nicolas e. TAMBURI pablo R. MARTIN INBIOSUR (UNS-CONICeT) Universidad Nacional del Sur Departamento de Biologla Bioquimica y Farmacia San Juan 670 8000 Bahia Blanca Argentina

A South American freshwater gastropod, the apple snail Pomacea canaliculata, has become a driver of ecosystemic changes in wetlands and an important rice pest after its introduction to various parts of the world, mainly Asia. The objective of this study was to study the effect of an abrupt interruption in food availability in the short term （up to 4 weeks） and long term （up to 8 months） on survival and re- productive activity. The main results indicate that short-term fasting mainly affects the survival of males, but only when they are raised together with females, probably due to a greater mate-searching activity that increases mortality in the individuals with lower reserves. The number of copulating snails or egg-laying females shows an abrupt drop when fasting and a rapid recovery after the food supply is restored. The strategy of discontinuing reproductive activity prioritizes energy conservation for the survival of the females. Interpopulation variation in resistance to starvation was observed in adults, which can be explained to some extent by the food availability that they experienced in their natural environment. No interpopulational differences in survival were seen in hatchlings. The mean maximum values of survival under starvation were 52.6 days in hatchlings and the 3.3% of adults survive over than 200 days, which may be a relevant trait in dispersal and establishment in new habitats.

关键词： GASTROPODA POMACeA canaliculata WeTLANDS STARVATION eNeRGY conservation

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Transarterial embolization is an acceptable bridging therapy to hepatocellular carcinoma prior to liver transplantation

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World Journal of Transplantation 2024年第2期14卷 126-134页

作者： Gabriel Lazzarotto-da-Silva Leandro A Scaffaro Mauricio Farenzena Lucas Prediger Rafaela K Silva Flávia Heinz Feier Tomaz J M Grezzana-Filho pablo D Rodrigues Alexandre de Araujo Mario Reis Alvares-da-Silva Roberta C Marchiori Cleber Rosito Pinto Kruel Marcio Fernandes Chedid Department of Liver Transplant and Hepatobiliary Surgery Unit Hospital de Clínicas de Porto AlegrePorto Alegre 90035-007Brazil Department of Interventional Radiology Unit Hospital de Clínicas de Porto AlegrePorto Alegre 90035-007Brazil Department of Gastroenterology and Hepatology Hospital de Clínicas de Porto AlegrePorto Alegre 90035-007Brazil

BACKGROUND Hepatocellular carcinoma(HCC)is an aggressive malignant neoplasm that requires liver transplantation(LT).Despite patients with HCC being prioritized by most organ allocation systems worldwide,they still have to wait for long *** therapies(LRTs)are employed as bridging therapies in patients with HCC awaiting *** largely used in the past,transarterial embolization(TAe)has been replaced by transarterial chemoembolization(TACe).However,the superiority of TACe over TAe has not been consistently shown in the *** To compare the outcomes of TACe and TAe in patients with HCC awaiting *** All consecutive patients with HCC awaiting LT between 2011 and 2020 at a single center were *** patients underwent LRT with either TACe or *** patients also underwent percutaneous ethanol injection(PeI),concom-itantly or in different treatment *** choice of LRT for each HCC nodule was determined by a multidisciplinary *** primary outcome was waitlist dropout due to tumor progression,and the secondary outcome was the occurrence of adverse *** the subset of patients who underwent LT,complete pathological response and post-transplant recurrence-free survival were also *** Twelve(18.5%)patients in the TACe group(only TACe and TACe+PeI;n=65)and 3(7.9%)patients in the TAe group(only TAe and TAe+PeI;n=38)dropped out of the waitlist due to tumor progression(P log-rank test=0.29).Adverse events occurred in 8(12.3%)and 2(5.3%)patients in the TACe and TAe groups,respectively(P=0.316).Forty-eight(73.8%)of the 65 patients in the TACe group and 29(76.3%)of the 38 patients in the TAe group underwent LT(P=0.818).Among these patients,complete pathological response was detected in 7(14.6%)and 9(31%)patients in the TACe and TAe groups,respectively(P=0.145).Post-LT,HCC recurred in 9(18.8%)and 4(13.8%)patients in the TACe and TAe groups,respectively(P=0.756).Posttransplant recurrence-free survival was simila

关键词： Hepatocellular carcinoma Transarterial embolization Transarterial chemoembolization Liver transplantation Locoregional therapy Bridging

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Control-based Fault Current Limiter for Minimizing Impact of Distributed Generation Units on Protection Systems

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Journal of Modern Power Systems and Clean energy 2023年第2期11卷 643-650页

作者： pablo e.Muñoz Ricardo J.Mantz Sergio A.González Instituto LeICI UNLPCONICETLa Plata 1900La PlataArgentina Commission of Scientific Researches of the Buenos Aires Province(CICpBA) La PlataArgentina

Distributed generation units(DGUs)bring some problems to the existing protection system,such as those associated with protection blinding and sympathetic *** is known that fault current limiters(FCLs)help minimize the negative impact of DGUs on the protection *** this paper,a control-based FCL is proposed,i.e.,the FCL is integrated into the DGU control *** this end,a predictive control strategy with fault current limitation is *** this way,a DGU is controlled,not only for power exchange with the power grid but also to limit its fault current *** proposal is posed as a constrained optimization problem allowing taking into account the current limit explicitly in the design process as a closed-loop solution.A linear approximation is proposed to cope with the inherent nonlinear *** proposal does not require incorporating extra equipment or mechanisms in the control loop,making the design process *** evaluate the proposed control-based FCL,both protection blinding and sympathetic tripping scenarios are *** control confines the DGU currents within the constraints quickly,avoiding large transient ***,the impact on the protection system is reduced without the necessity that the DGU goes out of service.

关键词： Distributed generation distribution network protection power electronic converter fault current limiter model-based predictive controller

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Folate Metabolism Interferes with Plant Immunity through 1C Methionine Synthase-Directed Genome-wide DNA Methylation enhancement

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Molecular Plant 2019年第9期12卷 1227-1242页

作者： Beatriz Gonzalez pablo Vera Instituto de Biologia Molecular y Celular de Plantas Universidad Politecnica de Valencia-C.S.I.CCiudad Politecnica de la InnovacionEdificio 8EIngeniero Fausto Elios/n.46022 ValenciaSpain

Plants rely on primary metabolism for flexible adaptation to environmental ***,through a combination of chemical genetics and forward genetic studies in Arabidopsis plants,we identified that the essential folate metabolic pathway exerts a salicylic acid-independent negative control on plant *** of the folate pathway promotes enhanced resistance to Pseudom onas syringae DC3000 via activation of a primed immune state in plants,whereas its implementation results in enhanced *** proteomics analysis using immune-defective mutants identified a methionine synthase(MeTS1),in charge of the synthesis of Met through the folate-dependent 1C metabolism,acting as a nexus between the folate pathway and plant *** of MeTS1 represses plant immunity and is accompanied by genome-wide global increase in DNA methylation,revealing that imposing a methylation pressure at the genomic level compromises plant *** together,these results indicate that the folate pathway represents a new layer of complexity in the regulation of plant defense responses.

关键词： folate pathway plant immunity methionine DNA methylation

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