检索结果-南通市图书馆

Modelling the impacts of cover crop management strategies on the water use,carbon exchange and yield of olive orchards

引用

Journal of Forestry Research 2023年第1期34卷 283-295页

作者： Alvaro López-Bernal Omar García-Tejera Luca Testi Francisco J.Villalobos departamento de Agronomía Universidad de CórdobaCampus de RabanalesEdifi cio C414071 CórdobaSpain Departamento de Ingeniería Agraria Y del Medio Natural Universidad de La LagunaCarretera General de Geneto 238200 San Cristóbal de La LagunaSpain Instituto de Agricultura Sostenible(IAS) Consejo Superior de Investigaciones Científi cas(CSIC)Av.Menéndez Pidal S/N14080 CórdobaSpain

Cover crops have long been proposed as an alternative soil management for minimizing erosion rates in olive stands while providing additional ecosystem services.However,the trade-off between these benefits and the competition for water with the trees makes the definition of optimal management practices a challenging task in semiarid climates.This work presents an improved version of OliveCan,a process-based simulation model of olive orchards that now can simulate the main impacts of cover crops on the water and carbon balances of olive orchards.Albeit simple in its formulation,the new model components were developed to deal with different cover crop management strategies.Examples are presented for simulation runs of a traditional olive orchard in the conditions of southern Spain,evaluating the effects of different widths for the strip occupied by the cover crop(Fcc)and two contrasting mowing dates.Results revealed that high Fccresulted in lower olive yields,but only when mowing was applied at the end of spring.In this regard,late mowing and high Fccwas associated with lower soil water content from spring to summer,coinciding with olive flowering and the earlier stages of fruit growth.Fccwas also negatively correlated with surface runoff irrespective of the mowing date.On the other hand,net ecosystem productivity(NEP)was substantially affected by both Fccand mowing date.Further simulations under future climate scenarios comparing the same management alternatives are also presented,showing substantial yield reductions by the end of the century and minor or negligible changes in NEP and seasonal runoff.

关键词： Carbon exchange Cover crops Crop modelling Evapotranspiration Olea europaea L

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Exploring multifaceted factors in chronic kidney disease risk: A comprehensive analysis of biochemistry, lifestyle, and inflammation in elderly Chinese individuals

引用

World Journal of Clinical Cases 2024年第5期12卷 1033-1035页

作者： Fernando Cardona Unitat de Genètica Molecular Instituto de Biomedicina de Valencia–CSICValencia 46010Spain Centro de investigación Biomédica en Red Enfermedades Neurodegenerativas(CIBERNED) Instituto de Salud Carlos IIIMadrid 28029Spain departamento de Biotecnología Escuela Técnica Superior de Ingeniería Agronómica y del Medio Natural(ETSIAMN)Univeristat Politècnica de ValenciaValencia 46022Spain

This letter praises a recent article in the World Journal of Clinical Cases(Roles of biochemistry data,lifestyle,and inflammation in identifying abnormal renal function in old Chinese),examining factors affecting abnormal renal function in elderly Chinese using advanced machine learning.It highlights the importance of uric acid,age,hemoglobin,body mass index,sport hours,and systolic blood pressure.The study's holistic approach,integrating lifestyle and inflammation,offers a nuanced understanding of chronic kidney disease risk factors.The letter suggests exploring mechanistic pathways of hyperuricemia,the link between anemia and renal function,and the connection between body mass index and estimated glomerular filtration rate.It advocates investigating physical activity's impact on renal health and the independent effects of blood pressure.The study significantly contributes to chronic kidney disease understanding,proposing avenues for further exploration and interventions.Commendations are extended to the authors and the journal.

关键词： Biochemistry data Lifestyle Machine learning Renal function

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Can Biochar Protect Labile Organic Matter Against Mineralization in Soil?

引用

土壤圈：英文版 2017年第5期27卷 822-831页

作者： giovanna b.melas oriol ortiz josep m.alacaiz departament de biologia animal de biologia vegetal i d’ecologiafacultat de biociènciesuniversitat autònoma de barcelonaCerdanyola del Valles 08193(Spain) centre de recerca ecologica i aplicacions forestals(creaf) Cerdanyola del Valles E08193(Spain) dipartimento di agraria universitádegli studi di sassariViale Italia 39Sassari 071O0(halla) departamento de ciencias agrarias y del medio natural escuela politécnica superior de huescauniversidad de zaragozaHuesca E22071(Spain)

Biochar could help to stabilize soil organic(SOM) matter, thus sequestering carbon(C) into the soil. The aim of this work was to determine an easy method i) to estimate the effects of the addition of biochar and nutrients on the organic matter(SOM)mineralization in an artificial soil, proposed by the Organization for Economic Co-operation and development(OECD), amended with glucose and ii) to measure the amount of labile organic matter(glucose) that can be sorbed and thus be partially protected in the same soil, amended or not amended with biochar. A factorial experiment was designed to check the effects of three single factors(biochar, nutrients, and glucose) and their interactions on whole SOM mineralization. Soil samples were inoculated with a microbial inoculum and preincubated to ensure that their biological activities were not limited by a small amount of microbial biomass, and then they were incubated in the dark at 21℃ for 619 d. Periodical measurements of C mineralized to carbon dioxide(CO_2) were carried out throughout the 619-d incubation to allow the mineralization of both active and slow organic matter pools. The amount of sorbed glucose was calculated as the difference between the total and remaining amounts of glucose added in a soil extract. Two different models, the Freundlich and Langmuir models, were selected to assess the equilibrium isotherms of glucose sorption. The CO_2-C release strongly depended on the presence of nutrients only when no biochar was added to the soil. The mineralization of organic matter in the soil amended with both biochar and glucose was equal to the sum of the mineralization of the two C sources separately. Furthermore, a significant amount of glucose can be sorbed on the biochar-amended soil, suggesting the involvement of physico-chemical mechanisms in labile organic matter protection.

关键词：土壤活性有机质矿化作用生物炭保护经济合作与发展组织营养物质物理化学机制二氧化碳

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Growth phenology adjusts to seasonal changes in water availability in coexisting evergreen and deciduous mediterranean oaks

引用

Forest Ecosystems 2023年第5期10卷 535-546页

作者： Filipe Campelo Alvaro Rubio-Cuadrado Fernando Montes Michele Colangelo Cristina Valeriano J.Julio Camarero department of Life Sciences University of CoimbraCalçada Martim de FreitasCoimbra3000-456Portugal departamento de Sistemas y Recursos naturales Escuela Tecnica Superior de Ingeniería de MontesForestal y Del Medio NaturalUniversidad Politecnica de MadridCiudad Universitaria S/n28040MadridSpain Instituto Pirenaico de Ecología(IPE-CSIC) Avda.Montanana 1005E-50192ZaragozaSpain departamento de Dinamica y Gestion Forestal Instituto de Ciencias Forestales(ICIFOR-INIA-CSIC)Ctra.La Coruna Km 7.528040MadridSpain Scuola di Scienze Agrarie ForestaliAlimentari e AmbientaliUniversita Della BasilicataViale Dell’Ateneo Lucano 1085100PotenzaItaly

Different leaf(evergreen vs.deciduous habit)and xylem(diffuse-vs.ring-porous wood)traits represent contrasting strategies to face seasonal changes in water availability and temperature.However,how contrasting leaf and xylem habits of coexisting tree species affect stem wood formation and tree-ring development remains poorly understood.Here,we investigated the spatio-temporal patterns of wood formation in two deciduous oaks(Quercus faginea and Quercus petraea)and two evergreen oaks(Quercus ilex and Quercus suber)coexisting in seasonally dry Mediterranean forests along an aridity gradient in Spain.We hypothesized that growth responses to drought and intra-and inter-annual growth patterns would differ between functional groups.We simulated intra-and interannual growth using a modified version of the Vaganov-Shashkin(VS)process-based,growth model.The VS model simulations were used to estimate growth changes under a high emission scenario(RCP 8.5)for the current distribution of the study oak species and to forecast their future performance under warm(4.8℃)conditions in the Iberian Peninsula.Our simulations indicate that climate warming would induce a shortening of the ringgrowth season and a reduction of radial growth in evergreen and deciduous Mediterranean oaks,particularly in dry sites from southern and eastern Iberia currently occupied by Q.ilex and Q.faginea.Evergreen oaks may better recover after dry periods than deciduous oaks by resuming growth after the summer drought.Low soil water availability in spring would be more detrimental to growth of deciduous oaks.Process-based growth models should be refined and validated to better forecast changes in tree growth as a function of climate.

关键词： Process-based growth model Quercus ilex Quercus suber Quercus faginea Quercus petraea Tree-ring growth

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A Regulatory Module Controlling CA-Mediated Endosperm Cell Expansion Is Critical for Seed Germination in Arabidopsis

引用

Molecular Plant 2019年第1期12卷 71-85页

作者： Rocio Sanchez-Montesino Laura Bouza-Morcillo Julietta Marquez Melania Ghita Salva Duran-Nebreda Luis Gomez Michael J.Holdsworth George Bassel Luis Onate-Sanchez Centro de Biotecnologia y Genomica de Plantas Universidad Politecnica de Madrid-lnstituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria Campus de MontegancedoPozuelo de AlarconMaddd 28223Spain School of Biosciences University of NottinghamLoughborough LE12 5RDUK School of Biosciences University of BirminghamBirmingham B15 23-rUK departamento de Sistemas y Recursos naturales E.T.S.I.MontesForestal y del Medio NaturalCampus de Moncloa28040 MadridSpain

A key component of seed germination is the interplay of mechanical forces governing embryo growth and the surrounding restraining endosperm tissue.Endosperm cell separation is therefore thought to play a critical role in the control of this developmental transition.Here we demonstrate that in Arabidopsis thaliana seeds,endosperm cell expansion is a key component of germination.Endosperm cells expand to accommodate embryo growth prior to germination.We show that this is an actively regulated process supported by spatiotemporal control of the cell expansion gene EXPANSIN 2 (EXPA2).The NAC transcription factors NAC25 and NACIL were identified as upstream regulators of EXPA2 expression,gibbereliinmediated endosperm expansion,and seed germination.The delLA protein RGL2 repressed activation of the EXPA2 promoter by NAC25/NACIL.Taken together,our findings uncover a key role of the GA/ delLA-NAC25/NACIL-EXPA2 network in regulating endosperm cell expansion to control the seed-toseedling transition.

关键词： cell expansion cell-wall remodeling enzymes endosperm expansin NAC transcription factors seed germination

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Mapping the Genetic Diversity of Castanea sativa: Exploiting Spatial Analysis for Biogeography and Conservation Studies

引用

Journal of Geographic Information System 2016年第2期8卷 248-259页

作者： Francesca Chiocchini Claudia Mattioni Paola Pollegioni Ilaria Lusini Maria Angela Martín Marcello Cherubini Marco Lauteri Fiorella Villani C.N.R. Institute of Agro-environmental and Forest Biology Terni Italy departamento de ingeniería del medio Agronómico y Forestal Avda. Virgen del Puerto 2 Centro Universitario de Plasencia Universidad de Extremadura Caceres Spain

The current distribution of forest tree species is a result of natural or human mediated historical and contemporary processes. Knowledge of the spatial distribution of the diversity and divergence of populations is crucial for managing and conserving genetic resources in forest tree species. By combining tools from population genetics, landscape ecology and spatial statistics, landscape genetics thus represents a powerful method for evaluating the geographic patterns of genetic resources at the population level. In this study, we explore the possibility of combining genetic diversity data, spatial statistic tools and GIS technologies to map the genetic divergence and diversity of 31 Castanea sativa populations collected in Spain, Italy, Greece, and Turkey. The IDW technique was used to interpolate the diversity values and divergence indices as expected hetereozygosity (He), allelic richness (Rs), private allelic richness (PRs), and membership values (Q) of each population to different clusters. Genetic diversity maps and a synthetic map of the spatial genetic structure of European chestnut populations were produced. Spatial coincidences between landscape elements and statistically significant genetic discontinuities between populations were investigated. Evidence is provided of the significance of cartographic outputs produced in the study and on their usefulness in managing genetic resources.

关键词： Landscape Genetics Microsatellites Genetic Structure Spatial Interpolation Genetic Barriers

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Identification of quantitative trait loci and candidate genes for primary metabolite content in strawberry fruit

引用

Horticulture Research 2019年第1期6卷 1638-1654页

作者： JoséG.Vallarino delphine M.Pott Eduardo Cruz-Rus Luis Miranda Juan J.Medina-Minguez Victoriano Valpuesta Alisdair R.Fernie JoséF.Sánchez-Sevilla Sonia Osorio Iraida Amaya department of Molecular Biology and Biochemistry Instituto de Hortofruticultura Subtropical y Mediterránea“La Mayora”University of Málaga–Consejo Superior de Investigaciones Científicas(IHSM-UMA-CSIC)Campus de Teatinos29071 MálagaSpain Max-Planck-Institut für Molekulare Pflanzenphysiologie Am Mühlenberg 114476 Potsdam-GolmGermany Genómica y Biotecnología Centro de MálagaInstituto Andaluz de Investigación y Formación Agraria y Pesquera(IFAPA)29140 MálagaSpain ingeniería y Tecnología Agroalimentaria Centro Las Torres-TomejilInstituto Andaluz de Investigación y Formación Agraria y Pesquera(IFAPA)Alcaládel RíoSevillaSpain ingeniería y Tecnología Agroalimentaria Centro de HuelvaInstituto Andaluz de Investigación y Formación Agraria y Pesquera(IFAPA)HuelvaSpain

Improvement of nutritional and organoleptic quality of fruits is a key goal in current strawberry breeding programs.The ratio of sugars to acids is a determinant factor contributing to fruit liking,although different sugars and acids contribute in varying degrees to this complex trait.A segregating F1 population of 95 individuals,previously characterized for several fruit quality characters,was used to map during 2 years quantitative trait loci(QTL)for 50 primary metabolites,L-ascorbic acid(L-AA)and other related traits such as soluble solid content(SSC),titratable acidity(TA),and pH.A total of 133 mQTL were detected above the established thresholds for 44 traits.Only 12.9%of QTL were detected in the 2 years,suggesting a large environmental influence on primary metabolite content.An objective of this study was the identification of key metabolites that were associated to the overall variation in SSC and acidity.As it was observed in previous studies,a number of QTL controlling several metabolites and traits were co-located in homoeology group V(HG V).mQTL controlling a large variance in raffinose,sucrose,succinic acid,and L-AA were detected in approximate the same chromosomal regions of different homoeologous linkage groups belonging to HG V.Candidate genes for selected mQTL are proposed based on their co-localization,on the predicted function,and their differential gene expression among contrasting F1 progeny lines.RNA-seq analysis from progeny lines contrasting in L-AA content detected 826 differentially expressed genes and identified Mannose-6-phosphate isomerase,FaM6PI1,as a candidate gene contributing to natural variation in ascorbic acid in strawberry fruit.

关键词： straw breeding trait

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Oxidative degradation of Thermoplastic Starch Induced by UV Radiation

引用

Journal of Renewable Materials 2019年第4期7卷 383-391页

作者： Mayte M.Quispe Olivia V.López Marcelo A.Villar Planta Piloto de ingeniería Química PLAPIQUI(UNS CONICET)Bahía Blanca(8000)Argentina departamento de ingeniería Química Universidad Nacional del Sur(UNS)Bahía Blanca(8000)Argentina

Among biopolymers,thermoplastic starch(TPS)is a good candidate to obtain biomaterials because of its natural origin,biodegradable character,and processability.Exposure to ultraviolet(UV)radiation causes significant degradation of starch-based materials,inducing photooxidative reactions which result in breaking of polymer chains,production of free radical,and reduction of molar mass.These changes produce a deterioration of TPS mechanical properties,leading to useless materials after an unpredictable time.In this work,changes induced on TPS by UV radiation,analyzing structural properties and mechanical behavior,are studied.TPS was obtained through thermo-mechanical processing of native corn starch in the presence of water(45%w/w)and glycerol(30%w/w)as plasticizers.Films were obtained by thermocompression and,before testing,specimens were conditioned to reduce material fragility.Photodegradation process was performed by exposing TPS to 264 h UV radiation in a weathering test chamber.Specimen’s weight loss was determined gravimetrically.Chemical changes were studied by Fourier Transform Infrared Spectroscopy(FTIR)and morphological modifications were analyzed by Scanning Electron Microscopy(SEM).Reduction of weight average molar mass was measured by Static Light Scattering(SLS).Changes in mechanical properties were studied from tensile tests.After 96 h exposure,TPS specimens presented a weight reduction of 4-6%,mainly attributed to plasticizers lost by evaporation.SEM observations showed that UV radiation induced morphological changes on TPS,evidenced by an increment of specimens cracking.By FTIR,it was detected the presence of an additional band located at 1726 cm-1 in samples submitted to UV radiation,attributed to the formation of-C=O groups.Weight average molar mass of native starch was in the order of 107 g mol-1.TPS exposure to UV radiation decreased significantly its molar mass,confirming molecular degradation of the biopolymer.When TPS was exposed during 48 h,it was detected a considerable decrease in elongati

关键词： Thermoplastic starch UV radiation structural properties mechanical behavior

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Distribution of Malpighia mexicana in Mexico and its implications for Barranca del Río Santiago

引用

Journal of Forestry Research 2021年第3期32卷 1095-1103页

作者： Martín Tena Meza Rafael MaNavarro-Cerrillo Diego Brizuela Torres Instituto de Botánica Centro Universitario de Ciencias Biológicas y AgropecuariasUniversidad de GuadalajaraMéxicoCamino Ramón Padilla Sánchez No.2100.Nextipac45200 ZapopanJaliscoMexico depto.ingeniería Forestal Laboratorio de SelviculturaDendrocronología y Cambio ClimáticoDendrodatLab-ERSAFUniversidad de CórdobaCampus de RabanalesCtra.N-IVkm.39614071 CórdobaSpain departamento de Producción Forestal Centro Universitario de CienciasBiológicas y AgropecuariasUniversidad de GuadalajaraMéxicoCamino Ramón Padilla Sánchez No.2100 Nextipac45200 ZapopanJaliscoMexico

Wild plants represent relatively unexplored resource of high economic potential,especially as an alternative to developing new crops and,even more relevant,for improving existing crops and contributing to nutrition and health.The wild species M alpighia mexicana(manzanita)has a wide tradition of food,medicinal and ornamental use in Mexico.It is part of the American-origin group of tropical shrubs that produce edible red fruits,such as A cerola,which is considered the most important natural source of vitamin C in the world.Given the role played by M.mexicana in Mexico,and particularly in Barranca del Río Santiago(Santiago River Canyon),we modelled its potential distribution in both geographical areas.We used species'records from databases,local herbaria and records collected by the authors as well as climatic variables representing long term average,variability and extreme conditions of temperature and precipitation.To fit the models we used the modelling algorithm Maxent and selected an adequate configuration by testing a range of model complexity settings.The results indicate a clear species preference for warm-dry tropical forest,most extensively in the Balsas river depression and the central valleys of Oaxaca.The probability of the species presence in the western region was also high,although the probability was also high for smaller surface areas,such as the region of Santiago river canyons,which are covered by warm-dry tropical forests.

关键词： Malpighia mexicana Maxent Warmdry tropical forest Río Santiago Genetic resources Ecological niche model Manzanita

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Regulatory circuits involving bud dormancy factor PpeDAM6

引用

Horticulture Research 2021年第1期8卷 3488-3505页

作者： Alba Lloret Carles Quesada-Traver Ana Conejero Vicent Arbona Concepcion Gomez-Mena Cesar Petri Jesus A.Sanchez-Navarro Elena Zuriaga Carmen Leida Maria Luisa Badenes Gabino Rios Instituto Valenciano de Investigaciones agrarias 46113 MoncadaValenciaSpain departament de Ciencies Agraries i del Medi natural Universitat Jaume ICastello de la PlanaSpain Instituto de Biologia Molecular y Celular de Plantas Universitat Politecnica de Valencia-Consejo Superior de Investigaciones Cientificas46022 ValenciaSpain departamento de Fruticultura Subtropical y Mediterranea IHSM-UMA-CSICAvenida Dr.Wienbergs/n 29750 Algarrobo-CostaMalagaSpain

DORMANCy-ASSOCIATED MADS-BOX(DAM)genes have recently emerged as key potential regulators of the dormancy cycle and climate adaptation in perennial species.Particularly,PpeDAM6 has been proposed to act as a major repressor of bud dormancy release and bud break in peach(Prunus persica).PpeDAM6 expression is downregulated concomitantly with the perception of a given genotype-dependent accumulation of winter chilling time,and the coincident enrichment in H3K27me3 chromatin modification at a specific genomic region.We have identified three peach BASIC PENTACySTEINE PROTEINs(PpeBPCs)interacting with two GA-repeat motifs present in this H3K27me3-enriched region.Moreover,PpeBPC1 represses PpeDAM6 promoter activity by transient expression experiments.On the other hand,the heterologous overexpression of PpeDAM6 in European plum(Prunus domestica)alters plant vegetative growth,resulting in dwarf plants tending toward shoot meristem collapse.These alterations in vegetative growth of transgenic lines associate with impaired hormone homeostasis due to the modulation of genes involved in jasmonic acid,cytokinin,abscisic acid,and gibberellin pathways,and the downregulation of shoot meristem factors,specifically in transgenic leaf and apical tissues.The expression of many of these genes is also modified in flower buds of peach concomitantly with PpeDAM6 downregulation,which suggests a role of hormone homeostasis mechanisms in PpeDAM6-dependent maintenance of floral bud dormancy and growth repression.

关键词： homeostasis impaired winter

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：