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| Registros recuperados : 6 | |
| 1. |  | RAMOS, H. J. O.; RONCATO-MACCARI, L. D. B.; SOUZA, E. M.; SOARES-RAMOS, J. R. L.; HUNGRIA, M.; PEDROSA, F. O. Monitoring Azospirillum - wheat interactions using the gfp and gusA genes constitutivel expressed from a new broad-host range plamid. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE BIOQUÍMICA E BIOLOGIA MOLECULAR, 31., 2002, Caxambu. Programa e resumos. São Paulo : SBBq, 2002. p.68.| Biblioteca(s): Embrapa Soja. |
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| 2. | | RAMOS, H. J. O.; RONCATO-MACCARI, L.D.B.; SOUZA, E. M.; SOARES-RAMOS, J.R.L.; HUNGRIA, M.; PEDROSA, F. O. Monitoring Azospirillum-wheat interactions using the gfp and gusA genes constitutively expressed from a new broad-host range vector. Journal of Biotechnology, Amsterdam, v. 97, n. 3, p. 243-252, Aug. 2002.| Biblioteca(s): Embrapa Soja. |
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| 3. | | RAMOS, H. J. O.; SOUZA, E. M.; SOARES-RAMOS, J. R. L.; HUNGRIA, M.; VARGAS, M. A. T.; PEDROSA, F. O. Nodulation competitiveness of Bradyrhizobium strains harbouring an additional heterologous nifA gene. In: INTERNATIONAL CONGRESS ON NITROGEN FIXATION, 12., 1999, Foz do Iguacu. Nitrogen fixation: from molecules to crop productivity: proceedings. Dordrechet: Kluwer, 2000. p. 627. (Current Plant Science and Biotechnology in Agriculture, 38). Editado por Fabio O. Pedrosa, Mariangela Hungria, Geoffrey Yates, William E. Newton.| Biblioteca(s): Embrapa Soja. |
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| 4. | | RAMOS, H. J. O.; SOUZA, E. M.; SOARES-RAMOS, J.R.L.; HUNGRIA, M.; VARGAS, M. A. T.; PEDROSA, F. O. Nodulation competitiveness os Bradyrhizobium strains harbouring an additional heterologous nif A gene. In: INTERNATIONAL CONGRESS ON NITROGEN FIXATION, 12., 1999, Foz do Iguacu. Nitrogen fixation: from molecules to crop productivity - proceedings. Dordrechet: Kluwer, 2000. p.627. (Current Plant Science and Biotechnology in Agriculture, v.38). Editado por Fabio O. Pedrosa, Mariangela Hungria, Geoffrey Yates, William E. Newton.| Biblioteca(s): Embrapa Cerrados. |
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| 5. | | RAMOS, H. J. O.; SOUZA, E. M.; SOARES-RAMOS, J. R. L.; HUNGRIA, M.; VARGAS, M. A. T.; PEDROSA, F. O. Nodulation competitiveness of Bradyrhizobium strains harbouring an addtional heterologous nifA gene in plasmids and chromosome. In: INTERNATIONAL CONGRESS ON NITROGEN FIXATION, 12., 1999, Foz do Iguacu, PR. Book of abstracts. p. 66.| Biblioteca(s): Embrapa Cerrados. |
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| 6. | | VALENTE, M. A. S.; FARIA, J. A. Q. A.; SOARES-RAMOS, J. R. L.; REIS, P. A. B.; PINHEIRO, G. L.; PIOVESAN, N. D.; MORAIS, A. T.; MENEZES, C. C.; CANO, M. A. O.; FIETTO, L. G.; LOUREIRO, M. E.; ARAGAO, F. J. L.; FONTES, E. P. B. The ER luminal binding protein (BiP) mediates an increase in drought tolerance in soybean and delays drought-induced leaf senescence in soybean and tobacco. Journal of Experimental Botany, v.60, n.2, p. 533-546, 2009.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| Registros recuperados : 6 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
12/11/2018 |
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Data da última atualização: |
12/11/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
BITTENCOURT, H. von H.; TREZZI, M. M.; TEIXEIRA, S. D.; BONOME, L. da S.; VARGAS, A. G. de; SOUZA FILHO, A. P. da S.; OLDONI, T. C. |
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Afiliação: |
Henrique von Hertwig Bittencourt, Federal University of Fronteira Sul; Michelangelo Muzell Trezzi, Technological Federal University of Paraná; Sirlei Dias Teixeira, Technological Federal University of Paraná; Lisandro da Silva Bonome, Federal University of Fronteira Sul; Aline Garcias de Vargas, São Paulo State University; ANTONIO PEDRO DA SILVA SOUZA FILHO, CPATU; Tatiane Cadorin Oldoni, Technological Federal University of Paraná. |
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Título: |
Chemical ecology of Eragrostis plana helps understanding of the species' invasiveness in an agroecosystem community. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Crop & Pasture Science, v. 69, n. 10, p. 1050-1060, Oct. 2018. |
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DOI: |
10.1071/CP18339 |
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Idioma: |
Inglês |
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Conteúdo: |
South African lovegrass (Eragrostis plana Nees) is an aggressive and difficult-to-control species in grazing areas of the south of South America, whose invasion capacity is increased by its phytotoxic capability. The objectives of this work were to identify and quantify chemicals produced by the plant shoots, to evaluate the inhibitory capability of plant extracts on development of lucerne (Medicago sativa L.) and wheat (Triticum aestivum L.), and to determine the spatial distribution of phenolics in rhizosphere soil in an infested field. Extracts were obtained by exhaustive extraction of dry shoot biomass, using solvents in increasing order of polarity. Soil samples contained in the rhizosphere were collected from an infested field. Bioassays for determination of phytotoxicity of extracts on lucerne and wheat seedlings were conducted in a completely randomised design with four replicates. The extracts showed suppressive, stimulating or neutral effects on the development of the radicle, shoots, and total lucerne and wheat seedlings, with greater phytotoxicity, generally, of ethyl acetate and methyl alcohol extracts. In the shoot extracts, nine phenolic compounds were identified and quantified: caffeic acid, coumaric acid, ferulic acid, gallic acid, vanillic acid, catechin, epicatechin, resveratrol, rutin. Of these, four were identified in the soil: catechin, epicatechin, coumaric acid, ferulic acid. Catechin, epicatechin and ferulic acid showed similar distribution patterns in the soil profile, with higher concentrations detected on the surface and on the side opposite the plant crown, which indicates release by the decomposition of tissues deposited on the soil surface. Coumaric acid showed higher concentrations on the surface and in the deeper layer of the soil next to the plant, indicating release both from decomposition of the shoots and from the root system. Future work may explore the phytotoxicity of the analytes identified, either isolated or in admixture, using dose curves and an inhibitory response to target plant species. MenosSouth African lovegrass (Eragrostis plana Nees) is an aggressive and difficult-to-control species in grazing areas of the south of South America, whose invasion capacity is increased by its phytotoxic capability. The objectives of this work were to identify and quantify chemicals produced by the plant shoots, to evaluate the inhibitory capability of plant extracts on development of lucerne (Medicago sativa L.) and wheat (Triticum aestivum L.), and to determine the spatial distribution of phenolics in rhizosphere soil in an infested field. Extracts were obtained by exhaustive extraction of dry shoot biomass, using solvents in increasing order of polarity. Soil samples contained in the rhizosphere were collected from an infested field. Bioassays for determination of phytotoxicity of extracts on lucerne and wheat seedlings were conducted in a completely randomised design with four replicates. The extracts showed suppressive, stimulating or neutral effects on the development of the radicle, shoots, and total lucerne and wheat seedlings, with greater phytotoxicity, generally, of ethyl acetate and methyl alcohol extracts. In the shoot extracts, nine phenolic compounds were identified and quantified: caffeic acid, coumaric acid, ferulic acid, gallic acid, vanillic acid, catechin, epicatechin, resveratrol, rutin. Of these, four were identified in the soil: catechin, epicatechin, coumaric acid, ferulic acid. Catechin, epicatechin and ferulic acid showed similar distribution patterns ... Mostrar Tudo |
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Palavras-Chave: |
Ecologia química. |
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Thesagro: |
Alfafa; Erva Daninha; Pastagem. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02849naa a2200253 a 4500
001 2099211
005 2018-11-12
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1071/CP18339$2DOI
100 1 $aBITTENCOURT, H. von H.
245 $aChemical ecology of Eragrostis plana helps understanding of the species' invasiveness in an agroecosystem community.$h[electronic resource]
260 $c2018
520 $aSouth African lovegrass (Eragrostis plana Nees) is an aggressive and difficult-to-control species in grazing areas of the south of South America, whose invasion capacity is increased by its phytotoxic capability. The objectives of this work were to identify and quantify chemicals produced by the plant shoots, to evaluate the inhibitory capability of plant extracts on development of lucerne (Medicago sativa L.) and wheat (Triticum aestivum L.), and to determine the spatial distribution of phenolics in rhizosphere soil in an infested field. Extracts were obtained by exhaustive extraction of dry shoot biomass, using solvents in increasing order of polarity. Soil samples contained in the rhizosphere were collected from an infested field. Bioassays for determination of phytotoxicity of extracts on lucerne and wheat seedlings were conducted in a completely randomised design with four replicates. The extracts showed suppressive, stimulating or neutral effects on the development of the radicle, shoots, and total lucerne and wheat seedlings, with greater phytotoxicity, generally, of ethyl acetate and methyl alcohol extracts. In the shoot extracts, nine phenolic compounds were identified and quantified: caffeic acid, coumaric acid, ferulic acid, gallic acid, vanillic acid, catechin, epicatechin, resveratrol, rutin. Of these, four were identified in the soil: catechin, epicatechin, coumaric acid, ferulic acid. Catechin, epicatechin and ferulic acid showed similar distribution patterns in the soil profile, with higher concentrations detected on the surface and on the side opposite the plant crown, which indicates release by the decomposition of tissues deposited on the soil surface. Coumaric acid showed higher concentrations on the surface and in the deeper layer of the soil next to the plant, indicating release both from decomposition of the shoots and from the root system. Future work may explore the phytotoxicity of the analytes identified, either isolated or in admixture, using dose curves and an inhibitory response to target plant species.
650 $aAlfafa
650 $aErva Daninha
650 $aPastagem
653 $aEcologia química
700 1 $aTREZZI, M. M.
700 1 $aTEIXEIRA, S. D.
700 1 $aBONOME, L. da S.
700 1 $aVARGAS, A. G. de
700 1 $aSOUZA FILHO, A. P. da S.
700 1 $aOLDONI, T. C.
773 $tCrop & Pasture Science$gv. 69, n. 10, p. 1050-1060, Oct. 2018.
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