Base de dados : MEDLINE
Pesquisa : J01.040.947 [Categoria DeCS]
Referências encontradas : 291 [refinar]
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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]: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]: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


  4 / 291 MEDLINE  
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[PMID]:28605187
[Au] Autor:da Silva BP; Nepomuceno MP; Varela RM; Torres A; Molinillo JMG; Alves PLCA; Macías FA
[Ad] Endereço:Department of Applied Biology to Agropecuary, São Paulo State University, UNESP , 14884-900 Jaboticabal, Brazil.
[Ti] Título:Phytotoxicity Study on Bidens sulphurea Sch. Bip. as a Preliminary Approach for Weed Control.
[So] Source:J Agric Food Chem;65(25):5161-5172, 2017 Jun 28.
[Is] ISSN:1520-5118
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Farmers of the Franca region in Brazil observed that Bidens sulphurea was able to eliminate the Panicum maximum weed, which infected coffee plantations, without affecting the crop. In an effort to determine if the inhibitory effects observed were due to the presence of phytotoxic compounds from leaves and roots, a biodirected isolation and spectroscopic characterization has been carried out. The leaf dichloromethane and root acetone extracts were the most active, and the former appeared to be more phytotoxic to the target species, including four weeds. A total of 26 compounds were isolated from leaves and roots, and four of them are described here for the first time. The major compounds in the leaf extract are the sesquiterpene lactones costunolide, reynosin, and santamarine, and these showed marked inhibition. Amaranthus viridis and Panicum maximum were the most sensitive species of the weeds tested. These three phytotoxic lactones were also evaluated on A. viridis and P. maximum under hydroponic conditions. A. viridis was the most affected species with the three lactones, and santamarine was the most phytotoxic compound on both. This is the first time that the phytotoxicity of sesquiterpene lactones has been evaluated on hydroponic culture. The work described here is a preliminary approach for the use of B. sulphurea for weed control in agriculture, both as a cover crop and by use of its components as natural herbicide leads.
[Mh] Termos MeSH primário: Bidens/química
Herbicidas/toxicidade
Extratos Vegetais/toxicidade
Plantas Daninhas/efeitos dos fármacos
[Mh] Termos MeSH secundário: Amaranthus/efeitos dos fármacos
Asteraceae/efeitos dos fármacos
Brasil
Herbicidas/química
Herbicidas/isolamento & purificação
Estrutura Molecular
Extratos Vegetais/química
Extratos Vegetais/isolamento & purificação
Folhas de Planta/química
Raízes de Plantas/química
Controle de Plantas Daninhas
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Herbicides); 0 (Plant Extracts)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170707
[Lr] Data última revisão:
170707
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170613
[St] Status:MEDLINE
[do] DOI:10.1021/acs.jafc.7b01922


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[PMID]:28386883
[Au] Autor:Colbach N; Darmency H; Fernier A; Granger S; Le Corre V; Messéan A
[Ad] Endereço:Agroécologie, AgroSup Dijon, INRA, University Bourgogne Franche-Comté, F-21000, Dijon, France. Nathalie.Colbach@inra.fr.
[Ti] Título:Simulating changes in cropping practices in conventional and glyphosate-resistant maize. II. Weed impacts on crop production and biodiversity.
[So] Source:Environ Sci Pollut Res Int;24(14):13121-13135, 2017 May.
[Is] ISSN:1614-7499
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Overreliance on the same herbicide mode of action leads to the spread of resistant weeds, which cancels the advantages of herbicide-tolerant (HT) crops. Here, the objective was to quantify, with simulations, the impact of glyphosate-resistant (GR) weeds on crop production and weed-related wild biodiversity in HT maize-based cropping systems differing in terms of management practices. We (1) simulated current conventional and probable HT cropping systems in two European regions, Aquitaine and Catalonia, with the weed dynamics model FLORSYS; (2) quantified how much the presence of GR weeds contributed to weed impacts on crop production and biodiversity; (3) determined the effect of cultural practices on the impact of GR weeds and (4) identified which species traits most influence weed-impact indicators. The simulation study showed that during the analysed 28 years, the advent of glyphosate resistance had little effect on plant biodiversity. Glyphosate-susceptible populations and species were replaced by GR ones. Including GR weeds only affected functional biodiversity (food offer for birds, bees and carabids) and weed harmfulness when weed effect was initially low; when weed effect was initially high, including GR weeds had little effect. The GR effect also depended on cultural practices, e.g. GR weeds were most detrimental for species equitability when maize was sown late. Species traits most harmful for crop production and most beneficial for biodiversity were identified, using RLQ analyses. None of the species presenting these traits belonged to a family for which glyphosate resistance was reported. An advice table was built; the effects of cultural practices on crop production and biodiversity were synthesized, explained, quantified and ranked, and the optimal choices for each management technique were identified.
[Mh] Termos MeSH primário: Controle de Plantas Daninhas
Zea mays/efeitos dos fármacos
[Mh] Termos MeSH secundário: Agricultura
Animais
Biodiversidade
Produção Agrícola
Produtos Agrícolas/efeitos dos fármacos
Glicina/análogos & derivados
Glicina/farmacologia
Resistência a Herbicidas
Herbicidas/farmacologia
Plantas Geneticamente Modificadas/efeitos dos fármacos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Herbicides); 4632WW1X5A (glyphosate); TE7660XO1C (Glycine)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:171103
[Lr] Data última revisão:
171103
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170408
[St] Status:MEDLINE
[do] DOI:10.1007/s11356-017-8796-9


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[PMID]:28257454
[Au] Autor:Tardy F; Damour G; Dorel M; Moreau D
[Ad] Endereço:CIRAD, UPR GECO, Capesterre-Belle-Eau, Guadeloupe, France.
[Ti] Título:Trait-based characterisation of soil exploitation strategies of banana, weeds and cover plant species.
[So] Source:PLoS One;12(3):e0173066, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Cover plants can be introduced in cropping systems to provide agroecosystem services, including weed control via competition for resources. There is currently no consensus on how to identify the best cover plant species, while trait-based approaches are promising for screening plant species due to their agroecosystem service provision potential. This study was carried out to characterize soil exploitation strategies of cover plant species in banana agroecosystems using a trait-based approach, and in turn identify cover plant species with a high weed control potential via competition for soil resources in banana cropping systems. A field experiment was conducted on 17 cover plant species, two weed species and two banana cultivars grown individually. Four functional traits were measured. Two of them (i.e., the size of the zone explored by roots and the root impact density) were used to characterize root system soil exploration patterns. Two other traits (i.e., specific root length and root diameter) were used to characterize resource acquisition within the soil zone explored by the roots. All studied traits exhibited marked variations among species. The findings suggested a trade-off between the abilities of species to develop a limited number of large diameter roots exploring a large soil zone versus many thin roots exploring a smaller soil zone. Three soil-resource exploitation strategies were identified among species: (i) with large diameter roots that explore a large soil zone; (ii) with small diameter roots and a high specific length that explore a smaller soil zone; and (iii) with a high total root-impact density and an intermediate specific root length that explore the uppermost soil layers. Interestingly, in our panel of species, no correlations with regard to belowground and aboveground strategies were noted: species with an acquisitive belowground strategy could display an acquisitive or a conservative aboveground strategy. The findings of this study illustrated that a trait-based approach could be used to identify plant species with potential for competing with weeds, while minimising competition with banana. Six of the 17 studied cover crop species were identified as having this potential. The next step will be to assess them for their weed control performances in banana cropping systems with low reliance on herbicides.
[Mh] Termos MeSH primário: Fabaceae/fisiologia
Musa/fisiologia
Raízes de Plantas/fisiologia
Poaceae/fisiologia
[Mh] Termos MeSH secundário: Plantas Daninhas/crescimento & desenvolvimento
Plantas Daninhas/parasitologia
Característica Quantitativa Herdável
Solo/química
Controle de Plantas Daninhas/métodos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Soil)
[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:170304
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0173066


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[PMID]:28185156
[Au] Autor:Ureta MS; Torres Carbonell F; Pandolfo C; Presotto AD; Cantamutto MA; Poverene M
[Ad] Endereço:Departamento de Agronomía, Universidad Nacional del Sur and CERZOS-CCT, 8000, Bahía Blanca, Argentina. msureta@uns.edu.ar.
[Ti] Título:IMI resistance associated to crop-weed hybridization in a natural Brassica rapa population: characterization and fate.
[So] Source:Environ Monit Assess;189(3):101, 2017 Mar.
[Is] ISSN:1573-2959
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Wild turnip (Brassica rapa) is a common weed and a close relative to oilseed rape (Brassica napus). The Clearfield® production system is a highly adopted tool which provides an alternative solution for weed management, but its efficiency is threatened by gene transfer from crop to weed relatives. Crop-weed hybrids with herbicide resistance were found in the progeny of a B. rapa population gathered from a weedy stand on the borders of an oilseed rape (B. napus) imidazolinone (IMI)-resistant crop. Interspecific hybrids were confirmed by morphological traits in the greenhouse and experimental field, survival after imazethapyr applications, DNA content through flow cytometry, and pollen viability. The transference of herbicide resistance was demonstrated even in a particular situation of pollen competition between both an herbicide-resistant crop and a non-resistant crop. However, IMI resistance was not found in further generations collected at the same location. These results verify gene transmission from oilseed rape to B. rapa in the main crop area in Argentina where resistant and susceptible varieties are found and seed loss and crop volunteers are common. Hybridization, introgression, and herbicide selection would be associated with the loss of effectiveness of IMI technology.
[Mh] Termos MeSH primário: Brassica napus/efeitos dos fármacos
Brassica napus/genética
Brassica rapa/efeitos dos fármacos
Brassica rapa/genética
Resistência a Herbicidas/genética
Herbicidas/toxicidade
Hibridização Genética
Imidazolinas/toxicidade
[Mh] Termos MeSH secundário: Argentina
DNA de Plantas/análise
Monitoramento Ambiental
Citometria de Fluxo
Fenótipo
Plantas Geneticamente Modificadas
Pólen/efeitos dos fármacos
Sementes/efeitos dos fármacos
Controle de Plantas Daninhas/métodos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Plant); 0 (Herbicides); 0 (Imidazolines)
[Em] Mês de entrada:1703
[Cu] Atualização por classe:171020
[Lr] Data última revisão:
171020
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170211
[St] Status:MEDLINE
[do] DOI:10.1007/s10661-016-5760-y


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[PMID]:28166269
[Au] Autor:Schmithals A; Kühn N
[Ad] Endereço:Department of Landscape Architecture and Environmental Planning, Technische Universität Berlin, Berlin, Germany.
[Ti] Título:To mulch or not to mulch? Effects of gravel mulch toppings on plant establishment and development in ornamental prairie plantings.
[So] Source:PLoS One;12(2):e0171533, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:In recent years, North American prairie vegetation has served as a design model for highly attractive, low-cost and low-maintenance plantings in German urban green spaces. Where mixed-planting techniques, gravel mulch toppings and non-selective maintenance techniques such as mowing are used, prairie plantings are considered to be cost-effective alternative design concepts for public green space management. In this study, we investigated the establishment success of different mixtures of prairie species plantings on two sites with different soil conditions: topsoil and topsoil with graywacke gravel topping. We documented significantly higher average mortality rates on gravel mulch sites in the first year after establishment. Further development of mortality was not significantly different between sites. Weed species were always more numerous on topsoil sites and had an obvious effect on the visual impact of the plantings. The mulch created an effective barrier for wind-dispersed germinators. Soil temperatures down to 30 cm were significantly higher on gravel mulch sites throughout the year, stimulating more vital plant growth and a prolonged growing season. Our results emphasize the importance of considering these kinds of practical issues during the planning process as they are critical to the success or failure of the design.
[Mh] Termos MeSH primário: Desenvolvimento Vegetal
Solo
[Mh] Termos MeSH secundário: Clima
Conservação dos Recursos Naturais
Pradaria
Estações do Ano
Controle de Plantas Daninhas/métodos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Soil)
[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:170207
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0171533


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[PMID]:28160348
[Au] Autor:Razaghi P; Zafari D
[Ad] Endereço:Plant Protection Department, Faculty of Agriculture, University of Bu-Ali Sina, Hamedan, Iran.
[Ti] Título:Phoma crystallifera with phytotoxic effects and pathogenic potential against field bindweed (Convolvulus arvensis L.) in Iran.
[So] Source:J Appl Microbiol;122(5):1275-1285, 2017 May.
[Is] ISSN:1365-2672
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:AIMS: To identify a potential pathogenic isolate of fungus on Convolvulus arvensis and to determine its phytotoxic activity, which revealed the presence of toxic metabolites responsible for the toxicity against the target weed. METHODS AND RESULTS: A high virulent isolate of the fungus, Phoma crystallifera was isolated from symptomatic field bindweed in the west of Iran and was screened for the production of phytotoxins, which promoted necrosis on the detached leaves and seedlings of field bindweed in the bioassays. The isolate was distinct from other isolates of the fungi on the basis of morphological characteristics and the combined sequence database of the ITS region, partial LSU rDNA and ß-tubulin gene. Isolate P. crystalifera P6 produced the highest amount of phytotoxins after 21 days in a shacked culture of Richard's broth. The active metabolites were isolated from a cell-free culture filtrate by ethyl-acetate and purified by thin layer chromatography. The result indicated that six out of nine spots had phytotoxic activity in the bioassays, with R values of 0·16, 0·30, 0·36, 0·43, 0·57 and 0·81. CONCLUSIONS: Phoma crystallifera P6 and its active metabolites showed significant phytotoxic effects on the detached leaves of C. arvensis. SIGNIFICANCE AND IMPACT OF THE STUDY: To date, there are no reports of possible biocontrol agent(s) on C. arvensis in Iran. Thus, P. crystallifera P6 is introduced here as a severe pathogenic fungus and which can be used as a biocontrol agent against C. arvensis.
[Mh] Termos MeSH primário: Ascomicetos/isolamento & purificação
Ascomicetos/metabolismo
Convolvulus/microbiologia
Micotoxinas/metabolismo
Doenças das Plantas/microbiologia
[Mh] Termos MeSH secundário: Ascomicetos/genética
Ascomicetos/patogenicidade
Convolvulus/efeitos dos fármacos
Irã (Geográfico)
Micotoxinas/farmacologia
Folhas de Planta/microbiologia
Plantas Daninhas/efeitos dos fármacos
Plantas Daninhas/microbiologia
Virulência
Controle de Plantas Daninhas
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Mycotoxins)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170703
[Lr] Data última revisão:
170703
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170205
[St] Status:MEDLINE
[do] DOI:10.1111/jam.13411


  10 / 291 MEDLINE  
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[PMID]:28132659
[Au] Autor:Mitra S; Sarkar N; Barik A
[Ad] Endereço:Ecology Research Laboratory,Department of Zoology,The University of Burdwan,Burdwan - 713 104,West Bengal,India.
[Ti] Título:Long-chain alkanes and fatty acids from Ludwigia octovalvis weed leaf surface waxes as short-range attractant and ovipositional stimulant to Altica cyanea (Weber) (Coleoptera: Chrysomelidae).
[So] Source:Bull Entomol Res;107(3):391-400, 2017 Jun.
[Is] ISSN:1475-2670
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The importance of leaf surface wax compounds from the rice-field weed Ludwigia octovalvis (Jacq.) Raven (Onagraceae) was determined in the flea beetle Altica cyanea (Weber) (Coleoptera: Chrysomelidae). Extraction, thin layer chromatography and GC-MS and GC-FID analyses of surface waxes of young, mature and senescent leaves revealed 20, 19 and 19 n-alkanes between n-C15 and n-C35, respectively; whereas 14, 14 and 12 free fatty acids between C12:0 and C22:0 fatty acids were identified in young, mature and senescent leaves, respectively. Tricosane was predominant n-alkane in young and mature leaves, whilst eicosane predominated in senescent leaves. Heneicosanoic acid, palmitic acid and docosanoic acid were the most abundant free fatty acids in young, mature and senescent leaves, respectively. A. cyanea females showed attraction to 0.25 mature leaf equivalent surface waxes compared with young or senescent leaves in a short glass Y-tube olfactometer bioassay. The insects were attracted to a synthetic blend of 0.90, 1.86, 1.83, 1.95, 0.50 and 0.18 µg ml-1 petroleum ether of hexadecane, octadecane, eicosane, tricosane, palmitic acid and alpha-linolenic acid, respectively, comparable with the proportions as present in 0.25 mature leaf equivalent surface waxes. A. cyanea also laid eggs on a filter paper moistened with 0.25 mature leaf equivalent surface waxes or a synthetic blend of 0.90, 1.86, 1.83, 1.95, 0.50 and 0.18 µg ml-1 petroleum ether of hexadecane, octadecane, eicosane, tricosane, palmitic acid and alpha-linolenic acid, respectively. This finding could provide a basis for monitoring of the potential biocontrol agent in the field.
[Mh] Termos MeSH primário: Alcanos/farmacologia
Quimiotaxia
Coleópteros/fisiologia
Ácidos Graxos/farmacologia
Onagraceae/química
Oviposição/efeitos dos fármacos
[Mh] Termos MeSH secundário: Animais
Feminino
Olfatometria
Extratos Vegetais/farmacologia
Folhas de Planta/química
Controle de Plantas Daninhas
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Alkanes); 0 (Fatty Acids); 0 (Plant Extracts)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170131
[St] Status:MEDLINE
[do] DOI:10.1017/S0007485316001012



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