Base de dados : MEDLINE
Pesquisa : B01.650.940.800.575.912.250.822.500 [Categoria DeCS]
Referências encontradas : 1620 [refinar]
Mostrando: 1 .. 10   no formato [Detalhado]

página 1 de 162 ir para página                         

  1 / 1620 MEDLINE  
              next record last record
seleciona
para imprimir
Fotocópia
[PMID]:29210242
[Au] Autor:Köhl L; Oehl F; van der Heijden MGA
[Ti] Título:Agricultural practices indirectly influence plant productivity and ecosystem services through effects on soil biota.
[So] Source:Ecol Appl;24(7):1842-53, 2014.
[Is] ISSN:1051-0761
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:It is well established that agricultural practices alter the composition and diversity of soil microbial communities. However, the impact of changing soil microbial communities on the functioning of the agroecosystems is still poorly understood. Earlier work showed that soil tillage drastically altered microbial community composition. Here we tested, using an experimental grassland (Lolium, Trifolium, Plantago) as a model system, whether soil microbial communities from conventionally tilled (CT) and non-tilled (NT) soils have different influences on plant productivity and nutrient acquisition. We specifically focus on arbuscular mycorrhizal fungi (AMF), as they are a group of beneficial soil fungi that can promote plant productivity and ecosystem functioning and are also strongly affected by tillage management. Soil microbial communities from CT and NT soils varied greatly in their effects on the grassland communities. Communities from CT soil increased overall biomass production more than soil communities from NT soil. This effect was mainly due to a significant growth promotion of Trifolium by CT microorganisms. In contrast to CT soil inoculum, NT soil inoculum increased plant phosphorus concentration and total plant P content, demonstrating that the soil microbial communities from NT fields enhance P uptake. Differences in AM fungal community composition resulting, for instance, in twofold greater hyphal length in NT soil communities when compared to CT, are the most likely explanation for the different plant responses to CT and NT soil inocula. A range of field studies have shown that plant P uptake increases when farmers change to conservation tillage or direct seeding. Our results indicate that this enhanced P uptake results from enhanced hyphal length and an altered AM fungal community. Our results further demonstrate that agricultural management practices indirectly influence ecosystem services and plant community structure through effects on soil biota.
[Mh] Termos MeSH primário: Agricultura
Lolium/fisiologia
Micorrizas/fisiologia
Plantago/fisiologia
Microbiologia do Solo
Trifolium/fisiologia
[Mh] Termos MeSH secundário: Animais
Asteraceae/microbiologia
Asteraceae/fisiologia
Biomassa
Ecossistema
Lolium/microbiologia
Raízes de Plantas/crescimento & desenvolvimento
Raízes de Plantas/microbiologia
Plantago/microbiologia
Trifolium/microbiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180108
[Lr] Data última revisão:
180108
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171207
[St] Status:MEDLINE


  2 / 1620 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28950025
[Au] Autor:Poblaciones MJ; Damon P; Rengel Z
[Ad] Endereço:Department of Agronomy and Forest Environment Engineering, University of Extremadura, Badajoz, Spain.
[Ti] Título:Foliar zinc biofortification effects in Lolium rigidum and Trifolium subterraneum grown in cadmium-contaminated soil.
[So] Source:PLoS One;12(9):e0185395, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Zinc (Zn) is an important micronutrient that can alleviate cadmium (Cd) toxicity to plants and limit Cd entry into the food chain. However, little is known about the Zn-Cd interactions in pasture plants. We characterized the effects of foliar Zn application and Cd uptake by ryegrass (Lolium rigidum L.) and clover (Trifolium subterraneum L.) grown on Cd-contaminated soils; all combinations of foliar Zn applications (0, 0.25 and 0.5% (w/v) ZnSO4·7H2O) and soil Cd concentrations (0, 2.5 and 5 mg Cd kg-1) were tested. For both plant species, soil concentrations of DTPA-extractable Cd and Zn increased with an increase in the Cd and Zn treatments, respectively. Compared with L. rigidum, T. subterraneum accumulated, respectively, 3.3- and 4.1-fold more Cd in the 2.5-Cd and 5-Cd treatments and about 1.3-, 2.3- and 2.8-fold more Zn in the No-Zn, 0.25-Zn and 0.5-Zn treatments. Also, DTPA-Zn concentration was higher in soil after T. subterraneum than L. rigidum growth regardless of Zn applications. Foliar application of 0.25% (w/v) Zn significantly decreased the total Cd concentration in shoots of both species grown in the Cd-contaminated soil and ameliorated the adverse effects of Cd exposure on root growth, particularly in T. subterraneum.
[Mh] Termos MeSH primário: Cádmio/toxicidade
Lolium/metabolismo
Folhas de Planta/metabolismo
Poluentes do Solo/toxicidade
Trifolium/metabolismo
Zinco/metabolismo
[Mh] Termos MeSH secundário: Lolium/crescimento & desenvolvimento
Trifolium/crescimento & desenvolvimento
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Soil Pollutants); 00BH33GNGH (Cadmium); J41CSQ7QDS (Zinc)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171019
[Lr] Data última revisão:
171019
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170927
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0185395


  3 / 1620 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28910323
[Au] Autor:Pan L; Yang Z; Wang J; Wang P; Ma X; Zhou M; Li J; Gang N; Feng G; Zhao J; Zhang X
[Ad] Endereço:Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China.
[Ti] Título:Comparative proteomic analyses reveal the proteome response to short-term drought in Italian ryegrass (Lolium multiflorum).
[So] Source:PLoS One;12(9):e0184289, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Drought is a major abiotic stress that impairs growth and productivity of Italian ryegrass. Comparative analysis of drought responsive proteins will provide insight into molecular mechanism in Lolium multiflorum drought tolerance. Using the iTRAQ-based approach, proteomic changes in tolerant and susceptible lines were examined in response to drought condition. A total of 950 differentially accumulated proteins was found to be involved in carbohydrate metabolism, amino acid metabolism, biosynthesis of secondary metabolites, and signal transduction pathway, such as ß-D-xylosidase, ß-D-glucan glucohydrolase, glycerate dehydrogenase, Cobalamin-independent methionine synthase, glutamine synthetase 1a, Farnesyl pyrophosphate synthase, diacylglycerol, and inositol 1, 4, 5-trisphosphate, which might contributed to enhance drought tolerance or adaption in Lolium multiflorum. Interestingly, the two specific metabolic pathways, arachidonic acid and inositol phosphate metabolism including differentially accumulated proteins, were observed only in the tolerant lines. Cysteine protease cathepsin B, Cysteine proteinase, lipid transfer protein and Aquaporin were observed as drought-regulated proteins participating in hydrolysis and transmembrane transport. The activities of phospholipid hydroperoxide glutathione peroxidase, peroxiredoxin, dehydroascorbate reductase, peroxisomal ascorbate peroxidase and monodehydroascorbate reductase associated with alleviating the accumulation of reactive oxygen species in stress inducing environments. Our results showed that drought-responsive proteins were closely related to metabolic processes including signal transduction, antioxidant defenses, hydrolysis, and transmembrane transport.
[Mh] Termos MeSH primário: Regulação da Expressão Gênica de Plantas
Lolium/metabolismo
Proteínas de Plantas/biossíntese
Proteoma/biossíntese
Proteômica
Estresse Fisiológico
[Mh] Termos MeSH secundário: Secas
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Plant Proteins); 0 (Proteome)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171012
[Lr] Data última revisão:
171012
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170915
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0184289


  4 / 1620 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28902910
[Au] Autor:Li Q; Hegge R; Bridges PJ; Matthews JC
[Ad] Endereço:Department of Animal and Food Sciences, University of Kentucky, Lexington, Kentucky, United States of America.
[Ti] Título:Pituitary genomic expression profiles of steers are altered by grazing of high vs. low endophyte-infected tall fescue forages.
[So] Source:PLoS One;12(9):e0184612, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Consumption of ergot alkaloid-containing tall fescue grass impairs several metabolic, vascular, growth, and reproductive processes in cattle, collectively producing a clinical condition known as "fescue toxicosis." Despite the apparent association between pituitary function and these physiological parameters, including depressed serum prolactin; no reports describe the effect of fescue toxicosis on pituitary genomic expression profiles. To identify candidate regulatory mechanisms, we compared the global and selected targeted mRNA expression patterns of pituitaries collected from beef steers that had been randomly assigned to undergo summer-long grazing (89 to 105 d) of a high-toxic endophyte-infected tall fescue pasture (HE; 0.746 µg/g ergot alkaloids; 5.7 ha; n = 10; BW = 267 ± 14.5 kg) or a low-toxic endophyte tall fescue-mixed pasture (LE; 0.023 µg/g ergot alkaloids; 5.7 ha; n = 9; BW = 266 ± 10.9 kg). As previously reported, in the HE steers, serum prolactin and body weights decreased and a potential for hepatic gluconeogenesis from amino acid-derived carbons increased. In this manuscript, we report that the pituitaries of HE steers had 542 differentially expressed genes (P < 0.001, false discovery rate ≤ 4.8%), and the pattern of altered gene expression was dependent (P < 0.001) on treatment. Integrated Pathway Analysis revealed that canonical pathways central to prolactin production, secretion, or signaling were affected, in addition to those related to corticotropin-releasing hormone signaling, melanocyte development, and pigmentation signaling. Targeted RT-PCR analysis corroborated these findings, including decreased (P < 0.05) expression of DRD2, PRL, POU1F1, GAL, and VIP and that of POMC and PCSK1, respectively. Canonical pathway analysis identified HE-dependent alteration in signaling of additional pituitary-derived hormones, including growth hormone and GnRH. We conclude that consumption of endophyte-infected tall fescue alters the pituitary transcriptome profiles of steers in a manner consistent with their negatively affected physiological parameters.
[Mh] Termos MeSH primário: Doenças dos Bovinos/genética
Epichloe/fisiologia
Alcaloides de Claviceps/toxicidade
Lolium/microbiologia
Transcriptoma
[Mh] Termos MeSH secundário: Animais
Bovinos
Doenças dos Bovinos/metabolismo
Doenças dos Bovinos/microbiologia
Comportamento Alimentar
Redes Reguladoras de Genes
Hipófise/metabolismo
Prolactina/biossíntese
Prolactina/secreção
RNA Mensageiro/genética
RNA Mensageiro/metabolismo
Reação em Cadeia da Polimerase em Tempo Real
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Ergot Alkaloids); 0 (RNA, Messenger); 9002-62-4 (Prolactin)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171024
[Lr] Data última revisão:
171024
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170914
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0184612


  5 / 1620 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28764104
[Au] Autor:Yang G; Wang J
[Ad] Endereço:Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, PR China.
[Ti] Título:Co-fermentation of sewage sludge with ryegrass for enhancing hydrogen production: Performance evaluation and kinetic analysis.
[So] Source:Bioresour Technol;243:1027-1036, 2017 Nov.
[Is] ISSN:1873-2976
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The low C/N ratio and low carbohydrate content of sewage sludge limit its application for fermentative hydrogen production. In this study, perennial ryegrass was added as the co-substrate into sludge hydrogen fermentation with different mixing ratios for enhancing hydrogen production. The results showed that the highest hydrogen yield of 60mL/g-volatile solids (VS) was achieved when sludge/perennial ryegrass ratio was 30:70, which was 5 times higher than that from sole sludge. The highest VS removal of 21.8% was also achieved when sludge/perennial ryegrass ratio was 30:70, whereas VS removal from sole sludge was only 0.7%. Meanwhile, the co-fermentation system simultaneously improved hydrogen production efficiency and organics utilization of ryegrass. Kinetic analysis showed that the Cone model fitted hydrogen evolution better than the modified Gompertz model. Furthermore, hydrogen yield and VS removal increased with the increase of dehydrogenase activity.
[Mh] Termos MeSH primário: Reatores Biológicos
Lolium
Esgotos
[Mh] Termos MeSH secundário: Fermentação
Hidrogênio
Cinética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Sewage); 7YNJ3PO35Z (Hydrogen)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171023
[Lr] Data última revisão:
171023
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170803
[St] Status:MEDLINE


  6 / 1620 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28692936
[Au] Autor:Renard H; Maro D; Le Dizès S; Escobar-Gutiérrez A; Voiseux C; Solier L; Hébert D; Rozet M; Cossonnet C; Barillot R
[Ad] Endereço:Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PRP-ENV/SERIS/LRC, Laboratoire de Radioécologie de Cherbourg Octeville, Cherbourg-Octeville, 50130, France. Electronic address: hugo.renard@irsn.fr.
[Ti] Título:Tritium forms discrimination in ryegrass under constant tritium exposure: From seed germination to seedling autotrophy.
[So] Source:J Environ Radioact;177:194-205, 2017 Oct.
[Is] ISSN:1879-1700
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Uncertainties remain regarding the fate of atmospheric tritium after it has been assimilated in grasslands (ryegrass) in the form of TFWT (Tissue Free Water Tritium) or OBT (Organically Bound Tritium). One such uncertainty relates to the tritium forms discrimination during transfer from TFWT to OBT resulting from photosynthesis (OBT ), corresponding to the OBT /TFWT ratio. In this study, the OBT/TFWT ratio is determined by experiments in the laboratory using a ryegrass model and hydroponic cultures, with constant activity of tritium in the form of tritiated water (denoted as HTO) in the "water" compartment (liquid HTO) and "air" compartment (HTO vapour in the air). The OBT /TFWT ratio and the exchangeable OBT fraction are measured for three parts of the plant: the leaf, seed and root. Plant growth is modelled using dehydrated biomass measurements taken over time in the laboratory and integrating physiological functions of the plant during the first ten days after germination. The results suggest that there is no measurable discrimination of tritium in the plant organic matter produced by photosynthesis.
[Mh] Termos MeSH primário: Germinação/efeitos da radiação
Lolium/efeitos da radiação
Plântulas/efeitos da radiação
Trítio/toxicidade
Poluentes Radioativos da Água/toxicidade
[Mh] Termos MeSH secundário: Processos Autotróficos
Fotossíntese/efeitos da radiação
Monitoramento de Radiação
Trítio/análise
Poluentes Radioativos da Água/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Water Pollutants, Radioactive); 10028-17-8 (Tritium)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170908
[Lr] Data última revisão:
170908
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170711
[St] Status:MEDLINE


  7 / 1620 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28688845
[Au] Autor:Sánchez V; López-Bellido FJ; Cañizares P; Rodríguez L
[Ad] Endereço:Department of Chemical Engineering, School of Civil Engineering, University of Castilla-La Mancha, Avenida Camilo José Cela, s/n, 13071, Ciudad Real, Spain.
[Ti] Título:Assessing the phytoremediation potential of crop and grass plants for atrazine-spiked soils.
[So] Source:Chemosphere;185:119-126, 2017 Oct.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Pollution of soil and groundwater by atrazine has become an increasing environmental concern in the last decade. A phytoremediation test using plastic pots was conducted in order to assess the ability of several crops and grasses to remove atrazine from a soil of low permeability spiked with this herbicide. Four plant species were assessed for their ability to degrade or accumulate atrazine from soils: two grasses, i.e., ryegrass (Lolium perenne) and tall fescue (Festuca arundinacea), and two crops, i.e., barley (Hordeum vulgare) and maize (Zea mays). Three different doses of atrazine were used for the contamination of the pots: 2, 5 and 10 mg kg . 16 days after spiking, the initial amount of atrazine was reduced by 88.6-99.6% in planted pots, while a decrease of only 63.1-78.2% was found for the unplanted pots, thus showing the contribution of plants to soil decontamination. All the plant species were capable of accumulating atrazine and its N-dealkylated metabolites, i.e., deethylatrazine and deisopropylatrazine, in their tissues. Some toxic responses, such as biomass decreases and/or chlorosis, were observed in plants to a greater or lesser extent for initial soil doses of atrazine above 2 mg kg . Maize was the plant species with the highest ability to accumulate atrazine derivatives, reaching up to 38.4% of the initial atrazine added to the soil. Rhizosphere degradation/mineralization by microorganisms or plant enzymes, together with degradation inside the plants, have been proposed as the mechanisms that contributed to a higher extent than plant accumulation to explain the removal of atrazine from soils.
[Mh] Termos MeSH primário: Atrazina/análise
Biodegradação Ambiental
Poluentes do Solo/análise
[Mh] Termos MeSH secundário: Atrazina/análogos & derivados
Biomassa
Festuca/metabolismo
Herbicidas/análise
Lolium/metabolismo
Poaceae/metabolismo
Rizosfera
Solo
Zea mays/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Herbicides); 0 (Soil); 0 (Soil Pollutants); 0 (deethylatrazine); QJA9M5H4IM (Atrazine)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170710
[St] Status:MEDLINE


  8 / 1620 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28623746
[Au] Autor:Acosta-Santoyo G; Cameselle C; Bustos E
[Ad] Endereço:Center of Research and Technological Development in Electrochemistry (CIDETEQ), Pedro Escobedo 76703, Mexico. Electronic address: gacosta@cideteq.mx.
[Ti] Título:Electrokinetic - Enhanced ryegrass cultures in soils polluted with organic and inorganic compounds.
[So] Source:Environ Res;158:118-125, 2017 10.
[Is] ISSN:1096-0953
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The effect of electric fields on seed germination and development of ryegrass (Lolium perenne L.) was studied in clean and contaminated soil with heavy metals and/or PAHs. The application of 0.2 DCV/cm in clean soil near ryegrass seeds enhanced the germination by 75%. The presence of contaminants in soil hindered the germination and growing of ryegrass. However, the application of DC electric field favored the germination and growing of plants compensating the negative effects of the contaminants. The electrode material in anodes has a decisive influence in the germination and growing of ryegrass. Stable anode materials have to be used to avoid the release of toxic ions in the soil that affect the development of the plant. Graphite anodes are very appropriate because they are inexpensive and does not generate toxic effects on plants. The electro-phytoremediation of mixed contaminated soil with ryegrass showed very promising results, especially AC electric fields. The tests with AC current showed the highest biomass production in a treatment of 1 month. The more biomass production the more removal of heavy metals and PAHs from soil.
[Mh] Termos MeSH primário: Campos Eletromagnéticos
Germinação
Lolium/genética
Lolium/metabolismo
Poluentes do Solo/toxicidade
[Mh] Termos MeSH secundário: Biodegradação Ambiental
Condutividade Elétrica
Metais Pesados/toxicidade
Hidrocarbonetos Aromáticos Policíclicos/toxicidade
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Metals, Heavy); 0 (Polycyclic Aromatic Hydrocarbons); 0 (Soil Pollutants)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:171120
[Lr] Data última revisão:
171120
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170618
[St] Status:MEDLINE


  9 / 1620 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28618277
[Au] Autor:Zhu H; Sun H; Yao Y; Wang F; Zhang Y; Liu X
[Ad] Endereço:MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
[Ti] Título:Fate and adverse effects of hexabromocyclododecane diastereoisomers (HBCDDs) in a soil-ryegrass pot system.
[So] Source:Chemosphere;184:452-459, 2017 Oct.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:This study explored the fate and adverse effects of 3 main hexabromocyclododecane diastereoisomers (α-, ß-, and γ-HBCDDs) in a soil pot system planted with ryegrass (Lolium perenne L.) using a short-term (8 weeks) experiment. At the end of the experiment, soil urease activity in planted spiked soil increased and catalase activity decreased; while there was no obvious change in sucrase and peroxidase activities. HBCDDs mainly accumulated in the root of ryegrass, with root concentration factors (RCF) in the range of 1.46-4.43 and only a small part was transferred to the stem (SCF: 0.198-0.305) and leaf (LCF: 0.042-0.062). The concentration factors varied for different HBCDD diastereoisomers, being in the order of α- > ß- > Î³-HBCDD for all tissues, indicating preferential accumulation of α-HBCDD in ryegrass tissues. Moreover, the enantiomeric analysis revealed an enrichment of (+)-α-, (-)-ß- and (+)-γ-HBCDD enantiomers in ryegrass tissues. ß- and γ-HBCDDs (up to 1.90% and 4.11%, respectively) were transformed to aα-HBCDD in ryegrass, while no isomerization product from α-HBCDD was found. Hydroxylated HBCDDs metabolites, such as monoOHHBCDDs and diOHHBCDDs were found in ryegrass tissues for the first time.
[Mh] Termos MeSH primário: Hidrocarbonetos Bromados/química
Lolium/metabolismo
[Mh] Termos MeSH secundário: Lolium/química
Folhas de Planta/metabolismo
Raízes de Plantas/metabolismo
Solo/química
Poluentes do Solo/análise
Estereoisomerismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Hydrocarbons, Brominated); 0 (Soil); 0 (Soil Pollutants); 5I9835JO3M (hexabromocyclododecane)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170616
[St] Status:MEDLINE


  10 / 1620 MEDLINE  
              first record previous record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28509844
[Au] Autor:Ding L; Li J; Liu W; Zuo Q; Liang SX
[Ad] Endereço:College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China. 18730271511@163.com.
[Ti] Título:Influence of Nano-Hydroxyapatite on the Metal Bioavailability, Plant Metal Accumulation and Root Exudates of Ryegrass for Phytoremediation in Lead-Polluted Soil.
[So] Source:Int J Environ Res Public Health;14(5), 2017 May 16.
[Is] ISSN:1660-4601
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:Lead is recognized as one of the most widespread toxic metal contaminants and pervasive environmental health concerns in the environment. In this paper, the effects of nano-hydroxyapatite (NHAP) on remediation in artificially Pb-contaminated soils and ryegrass were studied in a pot experiment. The addition of NHAP decreased the water- and acid-soluble, exchangeable, and reducible fractions of Pb, extracted using the Community Bureau of Reference (BCR) method, whilst greatly increasing the residual fraction of Pb. Oxidizable Pb was increased slightly. No significant increase in soil pH was caused by the application of NHAP. Compared to conditions without NHAP, the addition of NHAP decreased the Pb content in ryegrass shoots and roots by 13.19-20.3% and 2.86-21.1%, respectively. Therefore, the application of NHAP reduced the mobility and bioavailability of Pb in the soil. In addition, the application of NHAP improved the fresh weight of shoots and roots, and promoted the growth of ryegrass. NHAP played a positive role in stimulating ryegrass to secrete tartaric acid.
[Mh] Termos MeSH primário: Durapatita/química
Chumbo/química
Chumbo/metabolismo
Lolium/metabolismo
Poluentes do Solo/química
Poluentes do Solo/metabolismo
[Mh] Termos MeSH secundário: Biodegradação Ambiental
Disponibilidade Biológica
Raízes de Plantas/química
Raízes de Plantas/metabolismo
Solo/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Soil); 0 (Soil Pollutants); 2P299V784P (Lead); 91D9GV0Z28 (Durapatite)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170517
[St] Status:MEDLINE



página 1 de 162 ir para página                         
   


Refinar a pesquisa
  Base de dados : MEDLINE Formulário avançado   

    Pesquisar no campo  
1  
2
3
 
           



Search engine: iAH v2.6 powered by WWWISIS

BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde