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[PMID]:29364942
[Au] Autor:Yuan X; Wen B
[Ad] Endereço:Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, the Chinese Academy of Sciences, Mengla, Yunnan, China.
[Ti] Título:Seed germination response to high temperature and water stress in three invasive Asteraceae weeds from Xishuangbanna, SW China.
[So] Source:PLoS One;13(1):e0191710, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Crassocephalum crepidioides, Conyza canadensis, and Ageratum conyzoides are alien annuals naturalized in China, which produce a large number of viable seeds every year. They widely grow in Xishuangbanna, becoming troublesome weeds that compete with crops for water and nutrients. As seed germination is among the most important life-stages which contribute to plant distribution and invasiveness, its adaptation to temperature and water stress were investigated in these three species. Results showed that: (1) These three species have wide temperature ranges to allow seed germination, i.e., high germination and seedling percentages were achieved between 15°C and 30°C, but germination was seriously inhibited at 35°C; only A. conyzoides demonstrated relative preference for warmer temperatures with approximately 25% germination and seedling percentage at 35°C; (2) light was a vital germination prerequisite for C. crepidioides and A. conyzoides, whereas most C. canadensis seeds germinated in full darkness; (3) Although all three species have good adaptation to bare ground habitat characterized by high temperatures and water stress, including their tolerance to soil surface temperatures of 70°C in air-dried seeds, A. conyzoides seeds exhibited higher tolerance to both continuous and daily periodic high-temperature treatment at 40°C, and to water restriction (e.g., ca. 65% seeds germinated to -0.8 MPa created by NaCl), which is consistent with their field behavior in Xishuangbanna. This study suggests that seed high-temperature tolerance contributes to the weed attributes of these three species, and that adaptation to local micro-habitats is a critical determinant for invasiveness of an alien plant.
[Mh] Termos MeSH primário: Asteraceae/fisiologia
Germinação
Temperatura Alta
Plantas Daninhas/fisiologia
Sementes/fisiologia
Estresse Fisiológico
Água
[Mh] Termos MeSH secundário: Asteraceae/embriologia
China
Espécies Introduzidas
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
059QF0KO0R (Water)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180125
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0191710


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[PMID]:29351549
[Au] Autor:García-Ruiz E; Loureiro Í; Farinós GP; Gómez P; Gutiérrez E; Sánchez FJ; Escorial MC; Ortego F; Chueca MC; Castañera P
[Ad] Endereço:Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Departamento de Protección Vegetal, Laboratorio de Malherbología, Madrid, Spain.
[Ti] Título:Weeds and ground-dwelling predators' response to two different weed management systems in glyphosate-tolerant cotton: A farm-scale study.
[So] Source:PLoS One;13(1):e0191408, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The use of glyphosate, as a post-emergence broad-spectrum herbicide in genetically modified glyphosate-tolerant (GT) cotton, supposes a big change in weed management programs with respect to a conventional regime. Thus, alterations in arable flora and arthropod fauna must be considered when evaluating their potential impacts. A 3-year farm-scale study was conducted in a 2-ha GT cotton crop, in southern Spain, to compare the effects of conventional and glyphosate herbicide regimes on weed abundance and diversity and their consequences for ground-dwelling predators. Surveys reveal that weed density was relatively low within all treatments with a few dominant species, with significantly higher weed densities and modifications of the floristic composition in glyphosate-treated plots that led to an increase in the abundance of Portulaca oleracea and to a reduction in plant diversity. The activity-density of the main predatory arthropod taxa (spiders, ground beetles, rove beetles and earwigs) varied among years, but no significant differences were obtained between conventional and glyphosate herbicide regimes. However, significant differences between treatments were obtained for ground beetles species richness and diversity, being higher under the glyphosate herbicide regime, and a positive correlation with weed density could be established for both parameters. The implications of these findings to weed control in GT cotton are discussed.
[Mh] Termos MeSH primário: Glicina/análogos & derivados
Gossypium/efeitos dos fármacos
Herbicidas/farmacologia
Plantas Daninhas/efeitos dos fármacos
Controle de Plantas Daninhas/métodos
[Mh] Termos MeSH secundário: Animais
Artrópodes/efeitos dos fármacos
Biodiversidade
Coleópteros/efeitos dos fármacos
Produtos Agrícolas/efeitos dos fármacos
Produtos Agrícolas/genética
Produtos Agrícolas/crescimento & desenvolvimento
Ecossistema
Cadeia Alimentar
Glicina/farmacologia
Gossypium/genética
Gossypium/crescimento & desenvolvimento
Resistência a Herbicidas/genética
Insetos/efeitos dos fármacos
Plantas Geneticamente Modificadas
Espanha
Aranhas/efeitos dos fármacos
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Herbicides); 4632WW1X5A (glyphosate); TE7660XO1C (Glycine)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180305
[Lr] Data última revisão:
180305
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180120
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0191408


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[PMID]:28745382
[Au] Autor:Cala A; Molinillo JMG; Fernández-Aparicio M; Ayuso J; Álvarez JA; Rubiales D; Macías FA
[Ad] Endereço:Allelopathy Group, Department of Organic Chemistry, Campus CEIA3, School of Science, University of Cadiz, C/ Republica Saharaui, 7, 11510-Puerto Real, Cádiz, Spain. famacias@uca.es.
[Ti] Título:Complexation of sesquiterpene lactones with cyclodextrins: synthesis and effects on their activities on parasitic weeds.
[So] Source:Org Biomol Chem;15(31):6500-6510, 2017 Aug 09.
[Is] ISSN:1477-0539
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Allelochemicals are safer, more selective and more active alternatives than synthetic agrochemicals for weed control. However, the low solubility of these compounds in aqueous media limits their use as agrochemicals. Herein, we propose the application of α-, ß- and γ-cyclodextrins to improve the physicochemical properties and biological activities of three sesquiterpene lactones: dehydrocostuslactone, costunolide and (-)-α-santonin. Complexation was achieved by kneading and coprecipitation methods. Aqueous solubility was increased in the range 100-4600% and the solubility-phase diagrams suggested that complex formation had been successful. The results of the PM3 semiempirical calculations were consistent with the experimental results. The activities on etiolated wheat coleoptiles, Standard Target Species and parasitic weeds were improved. Cyclodextrins preserved or enhanced the activity of the three sesquiterpene lactones. Free cyclodextrins did not show significant activity and therefore the enhancement in activity was due to complexation. These results are promising for applications in agrochemical design.
[Mh] Termos MeSH primário: Ciclodextrinas/química
Lactonas/química
Plantas Daninhas/efeitos dos fármacos
Santonina/análogos & derivados
Sesquiterpenos/química
[Mh] Termos MeSH secundário: Ciclodextrinas/síntese química
Ciclodextrinas/toxicidade
Lactonas/síntese química
Lactonas/toxicidade
Modelos Moleculares
Santonina/síntese química
Santonina/toxicidade
Sesquiterpenos/síntese química
Sesquiterpenos/toxicidade
Solubilidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Cyclodextrins); 0 (Lactones); 0 (Sesquiterpenes); 1VL8J38ERO (Santonin); 477-43-0 (dehydrocostus lactone); 4IK578SA7Z (costunolide)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180226
[Lr] Data última revisão:
180226
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170727
[St] Status:MEDLINE
[do] DOI:10.1039/c7ob01394a


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[PMID]:28503740
[Au] Autor:Karkanis A; Lykas C; Liava V; Bezou A; Petropoulos S; Tsiropoulos N
[Ad] Endereço:Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Volos, Greece.
[Ti] Título:Weed interference with peppermint (Mentha x piperita L.) and spearmint (Mentha spicata L.) crops under different herbicide treatments: effects on biomass and essential oil yield.
[So] Source:J Sci Food Agric;98(1):43-50, 2018 Jan.
[Is] ISSN:1097-0010
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: 'Minor crops' such as spearmint and peppermint are high added value crops, despite the fact that their production area is comparably small worldwide. The main limiting factor in mint commercial cultivation is weed competition. Thus, field experiments were carried out to evaluate the effects of weed interference on growth, biomass and essential oil yield in peppermint and spearmint under different herbicide treatments. RESULTS: The application of pendimethalin and oxyfluorfen provided better control of annual weeds resulting in higher crop yield. Additionally, when treated with herbicides both crops were more competitive against annual weeds in the second year than in the first year. All pre-emergence herbicides increased biomass yield, since pendimethalin, linuron and oxyfluorfen reduced the density of annual weeds by 71-92%, 63-74% and 86-95%, respectively. Weed interference and herbicide application had no effect on essential oil content; however, a relatively strong impact on essential oil production per cultivated area unit was observed, mainly due to the adverse effect of weed interference on plant growth. CONCLUSION: Considering that pendimethalin and oxyfluorfen were effective against annual weeds in both spearmint and peppermint crops, these herbicides should be included in integrated weed management systems for better weed management in mint crops. © 2017 Society of Chemical Industry.
[Mh] Termos MeSH primário: Herbicidas/farmacologia
Mentha piperita/crescimento & desenvolvimento
Mentha spicata/crescimento & desenvolvimento
Óleos Voláteis/análise
Extratos Vegetais/análise
Plantas Daninhas/efeitos dos fármacos
[Mh] Termos MeSH secundário: Compostos de Anilina/farmacologia
Cruzamento
Éteres Difenil Halogenados/farmacologia
Mentha piperita/química
Mentha piperita/efeitos dos fármacos
Mentha piperita/genética
Mentha spicata/química
Mentha spicata/efeitos dos fármacos
Mentha spicata/genética
Plantas Daninhas/crescimento & desenvolvimento
Controle de Plantas Daninhas
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Aniline Compounds); 0 (Halogenated Diphenyl Ethers); 0 (Herbicides); 0 (Oils, Volatile); 0 (Plant Extracts); 46GY4Y6567 (oxyfluorofen); VL6L14C06U (pendimethalin)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180102
[Lr] Data última revisão:
180102
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170516
[St] Status:MEDLINE
[do] DOI:10.1002/jsfa.8435


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[PMID]:29040272
[Au] Autor:Jones IL; Peres CA; Benchimol M; Bunnefeld L; Dent DH
[Ad] Endereço:Biological and Environmental Sciences, University of Stirling, Stirling, United Kingdom.
[Ti] Título:Woody lianas increase in dominance and maintain compositional integrity across an Amazonian dam-induced fragmented landscape.
[So] Source:PLoS One;12(10):e0185527, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Tropical forest fragmentation creates insular biological communities that undergo species loss and changes in community composition over time, due to area- and edge-effects. Woody lianas thrive in degraded and secondary forests, due to their competitive advantage over trees in these habitats. Lianas compete both directly and indirectly with trees, increasing tree mortality and turnover. Despite our growing understanding of liana-tree dynamics, we lack detailed knowledge of the assemblage-level responses of lianas themselves to fragmentation, particularly in evergreen tropical forests. We examine the responses of both sapling and mature liana communities to landscape-scale forest insularization induced by a mega hydroelectric dam in the Brazilian Amazon. Detailed field inventories were conducted on islands created during reservoir filling, and in nearby mainland continuous forest. We assess the relative importance of variables associated with habitat fragmentation such as area, isolation, surrounding forest cover, fire and wind disturbance, on liana community attributes including abundance, basal area, diversity, and composition. We also explore patterns of liana dominance relative to tree saplings and adults ≥10 cm diameter at breast height. We find that 1) liana community composition remains remarkably similar across mainland continuous forest and islands, regardless of extreme area- and edge- effects and the loss of vertebrate dispersers in the latter; and 2) lianas are increasing in dominance relative to trees in the sapling layer in the most degraded islands, with both the amount of forest cover surrounding islands and fire disturbance history predicting liana dominance. Our data suggest that liana communities persist intact in isolated forests, regardless of extreme area- and edge-effects; while in contrast, tree communities simultaneously show evidence of increased turnover and supressed recruitment. These processes may lead to lianas becoming a dominant component of this dam-induced fragmented landscape in the future, due to their competitive advantage over trees in degraded forest habitats. Additional loss of tree biomass and diversity brought about through competition with lianas, and the concurrent loss of carbon storage, should be accounted for in impact assessments of future dam development.
[Mh] Termos MeSH primário: Conservação dos Recursos Naturais
Plantas Daninhas/fisiologia
Centrais Elétricas/ética
Árvores/fisiologia
[Mh] Termos MeSH secundário: Biomassa
Brasil
Ecossistema
Florestas
Seres Humanos
Rios
Especificidade da Espécie
Clima Tropical
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171031
[Lr] Data última revisão:
171031
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171018
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0185527


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[PMID]:29016604
[Au] Autor:Malmstrom CM; Butterfield HS; Planck L; Long CW; Eviner VT
[Ad] Endereço:Department of Plant Biology, Michigan State University, East Lansing, Michigan, United States of America.
[Ti] Título:Novel fine-scale aerial mapping approach quantifies grassland weed cover dynamics and response to management.
[So] Source:PLoS One;12(10):e0181665, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Invasive weeds threaten the biodiversity and forage productivity of grasslands worldwide. However, management of these weeds is constrained by the practical difficulty of detecting small-scale infestations across large landscapes and by limits in understanding of landscape-scale invasion dynamics, including mechanisms that enable patches to expand, contract, or remain stable. While high-end hyperspectral remote sensing systems can effectively map vegetation cover, these systems are currently too costly and limited in availability for most land managers. We demonstrate application of a more accessible and cost-effective remote sensing approach, based on simple aerial imagery, for quantifying weed cover dynamics over time. In California annual grasslands, the target communities of interest include invasive weedy grasses (Aegilops triuncialis and Elymus caput-medusae) and desirable forage grass species (primarily Avena spp. and Bromus spp.). Detecting invasion of annual grasses into an annual-dominated community is particularly challenging, but we were able to consistently characterize these two communities based on their phenological differences in peak growth and senescence using maximum likelihood supervised classification of imagery acquired twice per year (in mid- and end-of season). This approach permitted us to map weed-dominated cover at a 1-m scale (correctly detecting 93% of weed patches across the landscape) and to evaluate weed cover change over time. We found that weed cover was more pervasive and persistent in management units that had no significant grazing for several years than in those that were grazed, whereas forage cover was more abundant and stable in the grazed units. This application demonstrates the power of this method for assessing fine-scale vegetation transitions across heterogeneous landscapes. It thus provides means for small-scale early detection of invasive species and for testing fundamental questions about landscape dynamics.
[Mh] Termos MeSH primário: Ecossistema
Pradaria
Espécies Introduzidas
Plantas Daninhas/fisiologia
[Mh] Termos MeSH secundário: Biodiversidade
Bromus/fisiologia
California
Conservação dos Recursos Naturais
Elymus/fisiologia
Monitoramento Ambiental
Estações do Ano
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171031
[Lr] Data última revisão:
171031
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171011
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0181665


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[PMID]:28889573
[Au] Autor:Dick M; Erlenkamp G; Nguyen GTT; Förster K; Groth G; Gohlke H
[Ad] Endereço:Institute of Pharmaceutical and Medicinal Chemistry and Bioeconomy Science Center (BioSC), Heinrich-Heine-Universität Düsseldorf, Germany.
[Ti] Título:Pyrazolidine-3,5-dione-based inhibitors of phosphoenolpyruvate carboxylase as a new class of potential C plant herbicides.
[So] Source:FEBS Lett;591(20):3369-3377, 2017 Oct.
[Is] ISSN:1873-3468
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Phosphoenolpyruvate carboxylase (PEPC) is a key enzyme in the C photosynthetic pathway of many of the world's worst weeds and a valuable target to develop C plant-selective herbicides. By virtual screening, analog synthesis, and in vitro validation, we identified pyrazolidine-3,5-diones as a new class of small molecules with inhibitory potential down to the submicromolar range against C PEPC and a selectivity factor of up to 16 over C PEPC. No other biological activity has yet been reported for the best compound, (3-bromophenyl)-4-(3-hydroxybenzylidene)-pyrazolidine-3,5-dione. A systematic variation in the substituents allowed the derivation of a qualitative structure-activity relationship. These findings make this compound class highly interesting for further investigations toward generating potent, C plant-selective herbicides with a low potential for unwanted effects.
[Mh] Termos MeSH primário: Herbicidas/química
Fosfoenolpiruvato Carboxilase/antagonistas & inibidores
Proteínas de Plantas/antagonistas & inibidores
Pirazóis/química
[Mh] Termos MeSH secundário: Asteraceae/efeitos dos fármacos
Asteraceae/enzimologia
Asteraceae/crescimento & desenvolvimento
Clonagem Molecular
Desenho de Drogas
Ensaios Enzimáticos
Escherichia coli/genética
Escherichia coli/metabolismo
Expressão Gênica
Herbicidas/síntese química
Herbicidas/farmacologia
Ensaios de Triagem em Larga Escala
Isoenzimas/antagonistas & inibidores
Isoenzimas/química
Isoenzimas/genética
Isoenzimas/metabolismo
Simulação de Acoplamento Molecular
Fosfoenolpiruvato Carboxilase/química
Fosfoenolpiruvato Carboxilase/genética
Fosfoenolpiruvato Carboxilase/metabolismo
Fotossíntese/efeitos dos fármacos
Proteínas de Plantas/química
Proteínas de Plantas/genética
Proteínas de Plantas/metabolismo
Plantas Daninhas/efeitos dos fármacos
Plantas Daninhas/enzimologia
Plantas Daninhas/crescimento & desenvolvimento
Pirazóis/síntese química
Pirazóis/farmacologia
Proteínas Recombinantes de Fusão/química
Proteínas Recombinantes de Fusão/genética
Proteínas Recombinantes de Fusão/metabolismo
Relação Estrutura-Atividade
Interface Usuário-Computador
[Pt] Tipo de publicação:LETTER
[Nm] Nome de substância:
0 (Herbicides); 0 (Isoenzymes); 0 (Plant Proteins); 0 (Pyrazoles); 0 (Recombinant Fusion Proteins); 0 (pyrazolidine-3,5-dione); EC 4.1.1.31 (Phosphoenolpyruvate Carboxylase)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171031
[Lr] Data última revisão:
171031
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170911
[St] Status:MEDLINE
[do] DOI:10.1002/1873-3468.12842


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[PMID]:28796821
[Au] Autor:Martínez-Ghersa MA; Menéndez AI; Gundel PE; Folcia AM; Romero AM; Landesmann JB; Ventura L; Ghersa CM
[Ad] Endereço:IFEVA, Facultad de Agronomía, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina.
[Ti] Título:Legacy of historic ozone exposure on plant community and food web structure.
[So] Source:PLoS One;12(8):e0182796, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Information on whole community responses is needed to predict direction and magnitude of changes in plant and animal abundance under global changes. This study quantifies the effect of past ozone exposure on a weed community structure and arthropod colonization. We used the soil seed bank resulting from a long-term ozone exposure to reestablish the plant community under a new low-pollution environment. Two separate experiments using the same original soil seed bank were conducted. Plant and arthropod richness and species abundance was assessed during two years. We predicted that exposure to episodic high concentrations of ozone during a series of growing cycles would result in plant assemblies with lower diversity (lower species richness and higher dominance), due to an increase in dominance of the stress tolerant species and the elimination of the ozone-sensitive species. As a consequence, arthropod-plant interactions would also be changed. Species richness of the recruited plant communities from different exposure histories was similar (≈ 15). However, the relative abundance of the dominant species varied according to history of exposure, with two annual species dominating ozone enriched plots (90 ppb: Spergula arvensis, and 120 ppb: Calandrinia ciliata). Being consistent both years, the proportion of carnivore species was significantly higher in plots with history of higher ozone concentration (≈3.4 and ≈7.7 fold higher in 90 ppb and 120 ppb plots, respectively). Our study provides evidence that, past history of pollution might be as relevant as management practices in structuring agroecosystems, since we show that an increase in tropospheric ozone may influence biotic communities even years after the exposure.
[Mh] Termos MeSH primário: Poluentes Atmosféricos/toxicidade
Ozônio/toxicidade
Plantas Daninhas/efeitos dos fármacos
[Mh] Termos MeSH secundário: Animais
Argentina
Artrópodes/fisiologia
Atmosfera
Biodiversidade
Cadeia Alimentar
Dispersão Vegetal
Plantas Daninhas/crescimento & desenvolvimento
Plantas Daninhas/parasitologia
Dinâmica Populacional
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Air Pollutants); 66H7ZZK23N (Ozone)
[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:170811
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0182796


  9 / 682 MEDLINE  
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[PMID]:28791544
[Au] Autor:Kyallo M; Ateka EM; Sseruwagi P; Ascencio-Ibáñez JT; Ssemakula MO; Skilton R; Ndunguru J
[Ad] Endereço:Biosciences eastern and central Africa-International Livestock Research Institute (BecA-ILRI) Hub, P.O. Box 30709-00100, Nairobi, Kenya. m.kyalo@cgiar.org.
[Ti] Título:Infectivity of Deinbollia mosaic virus, a novel weed-infecting begomovirus in East Africa.
[So] Source:Arch Virol;162(11):3439-3445, 2017 Nov.
[Is] ISSN:1432-8798
[Cp] País de publicação:Austria
[La] Idioma:eng
[Ab] Resumo:Weed-infecting begomoviruses play an important role in the epidemiology of crop diseases because they can potentially infect crops and contribute to the genetic diversity of crop-infecting begomoviruses. Despite the important epidemiological role that weed-infecting begomoviruses play, they remain insufficiently studied in Africa. Recently, we identified Deinbollia mosaic virus (DMV), a distinct begomovirus found naturally infecting the weed host Deinbollia borbonica (Sapindaceae) in Kenya and Tanzania. In this study, we investigated the capacity of DMV to infect a restricted host range of Solanaceae and Euphorbiaceae species. Biolistic inoculation of Nicotiana benthamiana with concatemeric DNAs resulted in systemic infection associated with yellow mosaic symptoms, while DNA partial dimers caused asymptomatic systemic infection. DMV was not infectious to cassava (Manihot esculenta Crantz), suggesting host resistance to the virus. Here, we demonstrate the first experimental infectivity analysis of DMV in N. benthamiana and cassava.
[Mh] Termos MeSH primário: Begomovirus/fisiologia
Euphorbiaceae/virologia
Doenças das Plantas/virologia
Plantas Daninhas/virologia
Solanaceae/virologia
[Mh] Termos MeSH secundário: África Oriental
Folhas de Planta/virologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171027
[Lr] Data última revisão:
171027
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170810
[St] Status:MEDLINE
[do] DOI:10.1007/s00705-017-3495-x


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[PMID]:28683548
[Au] Autor:Cao YY; Mao DJ; Wang WW; Du XH
[Ad] Endereço:Catalytic Hydrogenation Research Center, Zhejiang University of Technology , Zhejiang Key Laboratory of Green Pesticides and Cleaner Production Technology, Zhejiang Green Pesticide Collaborative Innovation Center, Hangzhou 310014, PR China.
[Ti] Título:Kresoxim-methyl Derivatives: Synthesis and Herbicidal Activities of (Pyridinylphenoxymethylene)phenyl Methoxyiminoacetates.
[So] Source:J Agric Food Chem;65(30):6114-6121, 2017 Aug 02.
[Is] ISSN:1520-5118
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:A series of new kresoxim-methyl derivatives, (pyridinylphenoxymethylene)phenyl methoxyiminoacetates, were synthesized and their structures were confirmed by NMR and high-resolution mass spectrometry (HRMS). Although derived from a fungicide, the bioassays indicated that several new compounds had good herbicidal activities. At 37.5 g a.i./ha, compound 5c showed 100% inhibition against Abutilon theophrasti, Amaranthus retroflexus, and Eclipta prostrata, which was better than mesotrione. Compound 5e had a broad herbicidal spectrum against broadleaf weeds. The present work indicates that 5c and 5e may serve as new candidates for potential herbicides.
[Mh] Termos MeSH primário: Herbicidas/síntese química
Herbicidas/farmacologia
Fenilacetatos/química
[Mh] Termos MeSH secundário: Herbicidas/química
Metacrilatos/síntese química
Metacrilatos/química
Metacrilatos/farmacologia
Estrutura Molecular
Fenilacetatos/síntese química
Fenilacetatos/farmacologia
Plantas Daninhas/efeitos dos fármacos
Plantas Daninhas/crescimento & desenvolvimento
Estrobilurinas
Relação Estrutura-Atividade
Controle de Plantas Daninhas
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Herbicides); 0 (Methacrylates); 0 (Phenylacetates); 0 (Strobilurins); 0LXZ062TTB (kresoxim-methyl)
[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:170708
[St] Status:MEDLINE
[do] DOI:10.1021/acs.jafc.7b02710



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