Base de dados : MEDLINE
Pesquisa : B01.650.940.800.575.912.250.859.750.200 [Categoria DeCS]
Referências encontradas : 95 [refinar]
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[PMID]:28707253
[Au] Autor:Deljouei A; Abdi E; Marcantonio M; Majnounian B; Amici V; Sohrabi H
[Ad] Endereço:Department of Forestry and Forest Economics, University of Tehran, Tehran, Iran. a.deljooei@ut.ac.ir.
[Ti] Título:The impact of forest roads on understory plant diversity in temperate hornbeam-beech forests of Northern Iran.
[So] Source:Environ Monit Assess;189(8):392, 2017 Aug.
[Is] ISSN:1573-2959
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Forest roads alter the biotic and abiotic components of ecosystems, modifying temperature, humidity, wind speed, and light availability that, in turn, cause changes in plant community composition and diversity. We aim at investigating and comparing the diversity of herbaceous species along main and secondary forest roads in a temperate-managed hornbeam-beech forest, north of Iran. Sixteen transects along main and secondary forest roads were established (eight transects along main roads and eight along secondary roads). To eliminate the effect of forest type, all transects were located in Carpinetum-Fagetum forests, the dominant forest type in the study area. The total length of each transect was 200 m (100 m toward up slope and 100 m toward down slope), and plots were established along it at different distances from road edge. The diversity of herbaceous plant species was calculated in each plot using Shannon-Wiener index, species richness, and Pielou's index. The results showed that diversity index decreased when distance from road edge increases. This decreasing trend continued up to 60 m from forest road margin, and after this threshold, the index slightly increased. Depending on the type of road (main or secondary) as well as cut or fill slopes, the area showing a statistical different plant composition and diversity measured through Shannon-Wiener, species richness, and Pielou's index is up to 10 m. The length depth of the road edge effect found in main and secondary forest roads was small, but it could have cumulative effects on forest microclimate and forest-associated biota at the island scale. Forest managers should account for the effect of road buildings on plant communities.
[Mh] Termos MeSH primário: Biodiversidade
Plantas/classificação
[Mh] Termos MeSH secundário: Betulaceae
Ecossistema
Monitoramento Ambiental
Fagus
Florestas
Geografia
Irã (Geográfico)
Solo
Árvores
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Soil)
[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:170715
[St] Status:MEDLINE
[do] DOI:10.1007/s10661-017-6105-1


  2 / 95 MEDLINE  
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[PMID]:28204868
[Au] Autor:Kubiak D; Osyczka P
[Ad] Endereço:Department of Mycology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-719, Olsztyn, Poland. darkub@uwm.edu.pl.
[Ti] Título:Specific Vicariance of Two Primeval Lowland Forest Lichen Indicators.
[So] Source:Environ Manage;59(6):966-981, 2017 Jun.
[Is] ISSN:1432-1009
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:To date, the lichens Chrysothrix candelaris and Varicellaria hemisphaerica have been classified as accurate primeval lowland forest indicators. Both inhabit particularly valuable remnants of oak-hornbeam forests in Europe, but tend toward a specific kind of vicariance on a local scale. The present study was undertaken to determine habitat factors responsible for this phenomenon and verify the indicative and conservation value of these lichens. The main spatial and climatic parameters that, along with forest structure, potentially affect their distribution patterns and abundance were analysed in four complexes with typical oak-hornbeam stands in NE Poland. Fifty plots of 400 m each were chosen for detailed examination of stand structure and epiphytic lichens directly associated with the indicators. The study showed that the localities of the two species barely overlap within the same forest community in a relatively small geographical area. The occurrence of Chrysothrix candelaris depends basically only on microhabitat space provided by old oaks and its role as an indicator of the ecological continuity of habitat is limited. Varicellaria hemisphaerica is not tree specific but a sufficiently high moisture of habitat is essential for the species and it requires forests with high proportion of deciduous trees in a wide landscape scale. Local landscape-level habitat continuity is more important for this species than the current age of forest stand. Regardless of the indicative value, localities of both lichens within oak-hornbeam forests deserve the special protection status since they form unique assemblages of exclusive epiphytes, including those with high conservation value.
[Mh] Termos MeSH primário: Ascomicetos/crescimento & desenvolvimento
Betulaceae/microbiologia
Monitoramento Ambiental/métodos
Florestas
Quercus/microbiologia
[Mh] Termos MeSH secundário: Ecologia
Ecossistema
Polônia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170911
[Lr] Data última revisão:
170911
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170217
[St] Status:MEDLINE
[do] DOI:10.1007/s00267-017-0833-4


  3 / 95 MEDLINE  
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[PMID]:28099483
[Au] Autor:Stiegel S; Entling MH; Mantilla-Contreras J
[Ad] Endereço:University of Hildesheim, Institute of Biology and Chemistry, Ecology and Environmental Education Group, Hildesheim, Germany.
[Ti] Título:Reading the Leaves' Palm: Leaf Traits and Herbivory along the Microclimatic Gradient of Forest Layers.
[So] Source:PLoS One;12(1):e0169741, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Microclimate in different positions on a host plant has strong direct effects on herbivores. But little is known about indirect effects due to changes of leaf traits. We hypothesized that herbivory increases from upper canopy to lower canopy and understory due to a combination of direct and indirect pathways. Furthermore, we hypothesized that herbivory in the understory differs between tree species in accordance with their leaf traits. We investigated herbivory by leaf chewing insects along the vertical gradient of mixed deciduous forest stands on the broad-leaved tree species Fagus sylvatica L. (European beech) with study sites located along a 140 km long transect. Additionally, we studied juvenile Acer pseudoplatanus L. (sycamore maple) and Carpinus betulus L. (hornbeam) individuals within the understory as a reference of leaf traits in the same microclimate. Lowest levels of herbivory were observed in upper canopies, where temperatures were highest. Temperature was the best predictor for insect herbivory across forest layers in our study. However, the direction was opposite to the generally known positive relationship. Herbivory also varied between the three tree species with lowest levels for F. sylvatica. Leaf carbon content was highest for F. sylvatica and probably indicates higher amounts of phenolic defense compounds. We conclude that the effect of temperature must have been indirect, whereby the expected higher herbivory was suppressed due to unfavorable leaf traits (lower nitrogen content, higher toughness and carbon content) of upper canopy leaves compared to the understory.
[Mh] Termos MeSH primário: Herbivoria/fisiologia
Insetos/fisiologia
Folhas de Planta/fisiologia
[Mh] Termos MeSH secundário: Acer/fisiologia
Animais
Betulaceae/fisiologia
Carbono/metabolismo
Ecossistema
Fagus/fisiologia
Florestas
Alemanha
Microclima
Nitrogênio/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
7440-44-0 (Carbon); N762921K75 (Nitrogen)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170119
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0169741


  4 / 95 MEDLINE  
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[PMID]:27720547
[Au] Autor:Brackx M; Van Wittenberghe S; Verhelst J; Scheunders P; Samson R
[Ad] Endereço:Lab. of Environmental and Urban Ecology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium; iMinds, Vision Lab, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium. Electronic address: Melanka.Brackx@uantwerp.be.
[Ti] Título:Hyperspectral leaf reflectance of Carpinus betulus L. saplings for urban air quality estimation.
[So] Source:Environ Pollut;220(Pt A):159-167, 2017 Jan.
[Is] ISSN:1873-6424
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:In urban areas, the demand for local assessment of air quality is high. The existing monitoring stations cannot fulfill the needs. This study assesses the potential of hyperspectral tree leaf reflectance for monitoring traffic related air pollution. Hereto, 29 Carpinus betulus saplings were exposed to an environment with either high or low traffic intensity. The local air quality was estimated by leaf saturation isothermal remanent magnetization (SIRM). The VIS-NIR leaf reflectance spectrum (350-2500 nm) was measured using a handheld AgriSpec spectroradiometer (ASD Inc.). Secondary, leaf chlorophyll content index (CCI), specific leaf area (SLA) and water content (WC) were determined. To gain insight in the link between leaf reflectance and air quality, the correlation between SIRM and several spectral features was determined. The spectral features that were tested are plain reflectance values, derivative of reflectance, two-band indices using the NDVI formula and PCA components. Spectral reflectance for wavelength bands in the red and short wave IR around the red edge, were correlated to SIRM with Pearson correlations of up to R = -0.85 (R = 0.72). Based on the spectral features and combinations thereof, binomial logistic regression models were trained to classify trees into high or low traffic pollution exposure, with classification accuracies up to 90%. It can be concluded that hyperspectral reflectance of C. betulus leaves can be used to detect different levels of air pollution within an urban environment.
[Mh] Termos MeSH primário: Poluição do Ar/análise
Betulaceae/química
Clorofila/análise
Monitoramento Ambiental/métodos
Folhas de Planta/química
[Mh] Termos MeSH secundário: Cidades
Análise Espectral Raman
Emissões de Veículos/análise
Água/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Vehicle Emissions); 059QF0KO0R (Water); 1406-65-1 (Chlorophyll)
[Em] Mês de entrada:1703
[Cu] Atualização por classe:170817
[Lr] Data última revisão:
170817
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161011
[St] Status:MEDLINE


  5 / 95 MEDLINE  
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[PMID]:27112786
[Au] Autor:Jamshidi M; Ghanati F
[Ad] Endereço:Department of Plant Biology, Faculty of Biological Science, Tarbiat Modares University (TMU), POB 14115-154, Tehran, Iran.
[Ti] Título:Taxanes content and cytotoxicity of hazel cells extract after elicitation with silver nanoparticles.
[So] Source:Plant Physiol Biochem;110:178-184, 2017 Jan.
[Is] ISSN:1873-2690
[Cp] País de publicação:France
[La] Idioma:eng
[Ab] Resumo:The toxicity of silver nanoparticles (AgNPs) has been attributed to the generation of Ag ions as well as production of ROS. The latter can elicit defensive response of plant cells in different ways e.g., enhancement of secondary metabolite productions. In the present study this hypothesis was evaluated by assessment of taxanes production by suspension-cultured hazel (Corylus avellana L.) cells after treatment with AgNPs. The cells were treated with different concentrations of AgNPs (0, 2.5, 5, and 10 ppm), in their logarithmic growth phase (d7) and were harvested after 1 weak. The growth of cells and their membrane integrity decreased but extracellular electro conductivity and total dissolved solids increase by AgNPs (probably due to loosening of cell membrane). Treatment of hazel cells with AgNPs (in particular of 5 ppm) rapidly and remarkably increased the yields of two major taxanes, i.e., Taxol and baccatin III; so that 24 h of the treatment their contents reached to 378% and 163% of the control, respectively. Increase of Taxanes was accompanied by the increase of total soluble phenols. The extracts of AgNPs-treated cells were able to inhibit the growth of cancerous HeLa cells and reduce their viability to 60% of the control. The results suggest the elicitation of suspension-cultured hazel cells with AgNPs as a procedure for rapid enhancement of anticancer taxanes biosynthesis by the cells.
[Mh] Termos MeSH primário: Betulaceae/efeitos dos fármacos
Nanopartículas Metálicas/administração & dosagem
Prata/farmacologia
Taxoides/metabolismo
[Mh] Termos MeSH secundário: Betulaceae/citologia
Betulaceae/metabolismo
Extratos Celulares/química
Membrana Celular/química
Membrana Celular/efeitos dos fármacos
Membrana Celular/metabolismo
Proliferação Celular/efeitos dos fármacos
Sobrevivência Celular/efeitos dos fármacos
Células Cultivadas
Relação Dose-Resposta a Droga
Condutividade Elétrica
Flavonoides/metabolismo
Células HeLa
Seres Humanos
Nanopartículas Metálicas/química
Nanopartículas Metálicas/ultraestrutura
Microscopia Eletrônica de Transmissão
Células Vegetais/efeitos dos fármacos
Células Vegetais/metabolismo
Células Vegetais/fisiologia
Extratos Vegetais/metabolismo
Prata/química
Fatores de Tempo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Cell Extracts); 0 (Flavonoids); 0 (Plant Extracts); 0 (Taxoids); 3M4G523W1G (Silver)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170418
[Lr] Data última revisão:
170418
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160427
[St] Status:MEDLINE


  6 / 95 MEDLINE  
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[PMID]:27671342
[Au] Autor:Morali U; Yavuzel N; Sensöz S
[Ad] Endereço:Department of Chemical Engineering, Faculty of Engineering and Architecture, Eskisehir Osmangazi University, Meselik Campus, 26480 Eskisehir, Turkey. Electronic address: umorali@ogu.edu.tr.
[Ti] Título:Pyrolysis of hornbeam (Carpinus betulus L.) sawdust: Characterization of bio-oil and bio-char.
[So] Source:Bioresour Technol;221:682-685, 2016 Dec.
[Is] ISSN:1873-2976
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Slow pyrolysis of hornbeam (Carpinus betulus L.) sawdust was performed to produce bio-oil and bio-char. The operational variables were as follows: pyrolysis temperature (400-600°C), heating rate (10-50°Cmin ) and nitrogen flow rate (50-150cm min ). Physicochemical and thermogravimetric characterizations of hornbeam sawdust were performed. The characteristics of bio-oil and bio-char were analyzed on the basis of various spectroscopic and chromatographic techniques such as FTIR, GC-MS, 1H NMR, SEM, BET. Higher heating value, density and kinematic viscosity of the bio-oil with maximum yield of 35.28% were 23.22MJkg , 1289kgm and 0.6mm s , respectively. The bio-oil with relatively high fuel potential can be obtained from the pyrolysis of the hornbeam sawdust and the bio-char with a calorific value of 32.88MJkg is a promising candidate for solid fuel applications that also contributes to the preservation of the environment.
[Mh] Termos MeSH primário: Betulaceae/química
Biocombustíveis/análise
Carvão Vegetal/química
[Mh] Termos MeSH secundário: Carvão Vegetal/análise
Cromatografia Gasosa-Espectrometria de Massas
Calefação
Espectroscopia de Ressonância Magnética
Microscopia Eletrônica de Varredura
Nitrogênio/análise
Espectroscopia de Infravermelho com Transformada de Fourier
Temperatura Ambiente
Termogravimetria
Madeira/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Biofuels); 0 (biochar); 16291-96-6 (Charcoal); N762921K75 (Nitrogen)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170923
[Lr] Data última revisão:
170923
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160928
[St] Status:MEDLINE


  7 / 95 MEDLINE  
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[PMID]:27498493
[Au] Autor:Ozel HB
[Ti] Título:The effects of selected pre-treatments on germination of seeds of Oriental hornbeam (Carpinus orientalis).
[So] Source:J Environ Biol;37(4):503-8, 2016 Jul.
[Is] ISSN:0254-8704
[Cp] País de publicação:India
[La] Idioma:eng
[Ab] Resumo:In the present study, the effect of some pre-treatments implemented on seeds of Oriental hornbeam (Carpinus orientalis), which has wide geographical variation along Turkey on germination percentage values were investigated. For this purpose, 13 different pre-treatments were implemented to seeds obtained from 17 different populations. According to the obtained results (except control seeds), pre-treatments leading to lowest germination percentage value (8.1%) in Oriental hornbeam seeds was PT10: Keeping seeds for 90 min in sulfuric acid, while highest germination percentage (86.58%) has been obtained with pre-treatment PT13: Implementation of 40% dose of Baikal EM1 + Biohoumous mixture to the seeds, while lowest germination percentage (40.50%) was observed on seeds collected from P7 (Bartin-Kozcagiz) population, highest germination percentage was observed in seeds obtained from P17 (Artvin-Hopa) population.
[Mh] Termos MeSH primário: Betulaceae/crescimento & desenvolvimento
Germinação
Sementes/crescimento & desenvolvimento
[Mh] Termos MeSH secundário: Turquia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1608
[Cu] Atualização por classe:170203
[Lr] Data última revisão:
170203
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160809
[St] Status:MEDLINE


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[PMID]:27183333
[Au] Autor:Zloch M; Thiem D; Gadzala-Kopciuch R; Hrynkiewicz K
[Ad] Endereço:Department of Microbiology, Faculty of Biology and Environmental Protection, Nicolaus Copernicus University, Lwowska 1, 87-100 Torun, Poland; Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Wilenska 4, 87-100 Torun, Poland.
[Ti] Título:Synthesis of siderophores by plant-associated metallotolerant bacteria under exposure to Cd(2.).
[So] Source:Chemosphere;156:312-325, 2016 Aug.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Rhizosphere and endophytic bacteria are well known producers of siderophores, organic compounds that chelate ferric iron (Fe(3+)), and therefore play an important role in plant growth promotion in metalliferous areas, thereby improving bioremediation processes. However, in addition to their primary function in iron mobilization, siderophores also have the capacity to chelate other heavy metals, such as Al(3+), Zn(2+), Cu(2+), Pb(2+) and Cd(2+), that can affect homeostasis and the heavy metal tolerance of microorganisms. The main goal of our study was to select the most efficient siderophore-producing bacterial strains isolated from the roots (endophytes) and rhizosphere of Betula pendula L. and Alnus glutinosa L. growing at two heavy metal contaminated sites in southern Poland. Siderophore biosynthesis of these strains in the presence of increasing concentrations of Cd(2+) (0, 0.5, 1, 2 and 3 mM) under iron-deficiency conditions was analysed using spectrophotometric chemical tests for hydroxamates, catecholates and phenolates, as well as the separation of bacterial siderophores by HPLC and characterization of their structure by UHPLC-QTOF/MS. We proved that (i) siderophore-producing bacterial strains seems to be more abundant in the rhizosphere (47%) than in root endophytes (18%); (ii) the strains most effective at siderophore synthesis belonged to the genus Streptomyces and were able to secrete three types of siderophores under Cd(2+) stress: hydroxamates, catecholates and phenolates; (iii) in general, the addition of Cd(2+) enhanced siderophore synthesis, particularly ferrioxamine B synthesis, which may indicate that siderophores play a significant role in tolerance to Cd(2+) in Streptomyces sp.
[Mh] Termos MeSH primário: Betulaceae/microbiologia
Cádmio/farmacologia
Metais Pesados/química
Raízes de Plantas/microbiologia
Sideróforos/metabolismo
Streptomyces/metabolismo
[Mh] Termos MeSH secundário: Betulaceae/metabolismo
Biodegradação Ambiental
Desferroxamina/metabolismo
Endófitos/metabolismo
Compostos Férricos/metabolismo
Metais Pesados/análise
Raízes de Plantas/metabolismo
Polônia
Rizosfera
Streptomyces/crescimento & desenvolvimento
Streptomyces/isolamento & purificação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Ferric Compounds); 0 (Metals, Heavy); 0 (Siderophores); 00BH33GNGH (Cadmium); 4A0UG9NR9K (ferrioxamine B); J06Y7MXW4D (Deferoxamine)
[Em] Mês de entrada:1702
[Cu] Atualização por classe:170817
[Lr] Data última revisão:
170817
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160517
[St] Status:MEDLINE


  9 / 95 MEDLINE  
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[PMID]:27126226
[Au] Autor:Klein T; Vitasse Y; Hoch G
[Ad] Endereço:Institute of Botany, University of Basel, Schönbeinstrasse 6, 4056 Basel, Switzerland; Present address: Institute of Soil, Water and Environmental Sciences, ARO Volcani Center, Beit Dagan 50250, Israel tamirkl@volcani.agri.gov.il.
[Ti] Título:Coordination between growth, phenology and carbon storage in three coexisting deciduous tree species in a temperate forest.
[So] Source:Tree Physiol;36(7):847-55, 2016 Jul.
[Is] ISSN:1758-4469
[Cp] País de publicação:Canada
[La] Idioma:eng
[Ab] Resumo:In deciduous trees growing in temperate forests, bud break and growth in spring must rely on intrinsic carbon (C) reserves. Yet it is unclear whether growth and C storage occur simultaneously, and whether starch C in branches is sufficient for refoliation. To test in situ the relationships between growth, phenology and C utilization, we monitored stem growth, leaf phenology and stem and branch nonstructural carbohydrate (NSC) dynamics in three deciduous species: Carpinus betulus L., Fagus sylvatica L. and Quercus petraea (Matt.) Liebl. To quantify the role of NSC in C investment into growth, a C balance approach was applied. Across the three species, >95% of branchlet starch was consumed during bud break, confirming the importance of C reserves for refoliation in spring. The C balance calculation showed that 90% of the C investment in foliage (7.0-10.5 kg tree(-1) and 5-17 times the C needed for annual stem growth) was explained by simultaneous branchlet starch degradation. Carbon reserves were recovered sooner than expected, after leaf expansion, in parallel with stem growth. Carpinus had earlier leaf phenology (by ∼25 days) but delayed cambial growth (by ∼15 days) than Fagus and Quercus, the result of a competitive strategy to flush early, while having lower NSC levels.
[Mh] Termos MeSH primário: Betulaceae/fisiologia
Metabolismo dos Carboidratos
Fagus/fisiologia
Florestas
Meristema/fisiologia
Quercus/fisiologia
Estações do Ano
[Mh] Termos MeSH secundário: Betulaceae/crescimento & desenvolvimento
Betulaceae/metabolismo
Carbono/metabolismo
Ecologia
Fagus/crescimento & desenvolvimento
Fagus/metabolismo
Meristema/crescimento & desenvolvimento
Meristema/metabolismo
Fotossíntese
Folhas de Planta/crescimento & desenvolvimento
Folhas de Planta/metabolismo
Caules de Planta/crescimento & desenvolvimento
Caules de Planta/metabolismo
Quercus/crescimento & desenvolvimento
Quercus/metabolismo
Amido/metabolismo
Árvores/crescimento & desenvolvimento
Árvores/metabolismo
Árvores/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
7440-44-0 (Carbon); 9005-25-8 (Starch)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171003
[Lr] Data última revisão:
171003
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160430
[St] Status:MEDLINE
[do] DOI:10.1093/treephys/tpw030


  10 / 95 MEDLINE  
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[PMID]:27112162
[Au] Autor:Sheng Q; Fang X; Zhu Z; Xiao W; Wang Z; Ding G; Zhao L; Li Y; Yu P; Ding Z; Sun Q
[Ad] Endereço:College of Landscape Architecture, Nanjing Forestry University, Nanjing, 210037, China.
[Ti] Título:Seasonal variation of pheophorbide a and flavonoid in different organs of two Carpinus species and its correlation with immunosuppressive activity.
[So] Source:In Vitro Cell Dev Biol Anim;52(6):654-61, 2016 Jun.
[Is] ISSN:1543-706X
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:The genus Carpinus of Betulaceae is the most widely distributed in the European landscape. This study reports a comparative study based on the pheophorbide a and flavonoid content from the two main species of the genus Carpinus, Carpinus betulus and Carpinus turczaninowii, respectively, in Nanjing, China. The pheophorbide a and flavonoid content depends on the organ, species, and season. HPLC analysis showed that the pheophorbide a and flavonoid levels were the highest in May and June, respectively, from the leaves of C. betulus 'Fastigiata.' In contrast, the content of pheophorbide a and flavonoid in the stems of C. betulus 'Fastigiata' or in other species was low. The immunosuppressive effects of the ethyl acetate extracts and methanol extracts from the two Carpinus species were also evaluated. The ethyl acetate extracts of C. betulus 'Fastigiata' in May and the methanol extracts of C. betulus 'Fastigiata' in June showed better immunosuppressive activity than in other seasons, which coincided with the content of pheophorbide a and flavonoid, respectively. Our findings indicated that C. betulus 'Fastigiata' can serve as a medicinal plant against inflammation because of its pheophorbide a and flavonoid content.
[Mh] Termos MeSH primário: Betulaceae/metabolismo
Clorofila/análogos & derivados
Flavonoides/metabolismo
Imunossupressores/farmacologia
Estações do Ano
Linfócitos T/efeitos dos fármacos
[Mh] Termos MeSH secundário: Animais
Betulaceae/química
Linhagem Celular
Sobrevivência Celular
China
Clorofila/metabolismo
Clorofila/farmacologia
Cromatografia Líquida de Alta Pressão
Flavonoides/farmacologia
Imunossupressores/isolamento & purificação
Imunossupressores/metabolismo
Ativação Linfocitária/efeitos dos fármacos
Camundongos Endogâmicos BALB C
Extratos Vegetais/química
Extratos Vegetais/farmacologia
Especificidade da Espécie
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Flavonoids); 0 (Immunosuppressive Agents); 0 (Plant Extracts); 1406-65-1 (Chlorophyll); IA2WNI2HO2 (pheophorbide a)
[Em] Mês de entrada:1702
[Cu] Atualização por classe:171105
[Lr] Data última revisão:
171105
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160427
[St] Status:MEDLINE
[do] DOI:10.1007/s11626-016-0041-1



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