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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
13/09/2021 |
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Data da última atualização: |
10/06/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OCAMPOS, F. M. M.; SOUZA, A. J. B. de; ANTAR, G. M.; WOUTERS, F. C.; COLNAGO, L. A. |
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Afiliação: |
LUIZ ALBERTO COLNAGO, CNPDIA. |
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Título: |
Phytotoxicity of Schiekia timida seed extracts, a mixture of phenylphenalenones. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Molecules, v. 26, 4197. 2021. |
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Páginas: |
1 - 13 |
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ISSN: |
1433-1373 |
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Idioma: |
Inglês |
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Conteúdo: |
: Phenylphenalenones, metabolites found in Schiekia timida (Haemodoraceae), are a class of specialized metabolites with many biological activities, being phytoalexins in banana plants. In the constant search to solve the problem of glyphosate and to avoid resistance to commercial herbicides, this work aimed to investigate the phytotoxic effect of the methanolic extract of S. timida seeds. The chemical composition of the seed extract was directly investigated by NMR and UPLC-QToF MS and the pre- and post-emergence phytotoxic effect on a eudicotyledonous model (Lactuca sativa) and a monocotyledonous model (Allium cepa) was evaluated through germination and seedling growth tests. Three concentrations of the extract (0.25, 0.50, and 1.00 mg/mL) were prepared, and four replicates for each of them were analyzed. Three major phenylphenalenones were identified by NMR spectroscopy: 4-hydroxy-anigorufone, methoxyanigorufone, and anigorufone, two of those reported for the first time in S. timida. The presence of seven other phenylphenalenones was suggested by the LC-MS analyses. The phenylphenalenone mixture did not affect the germination rate, but impaired radicle and hypocotyl growth on both models. The effect in the monocotyledonous model was statistically similar to glyphosate in the lowest concentration (0.25 mg/mL). Therefore, although more research on this topic is required to probe this first report, this investigation suggests for the first time that phenylphenalenone compounds may be post-emergence herbicides Menos: Phenylphenalenones, metabolites found in Schiekia timida (Haemodoraceae), are a class of specialized metabolites with many biological activities, being phytoalexins in banana plants. In the constant search to solve the problem of glyphosate and to avoid resistance to commercial herbicides, this work aimed to investigate the phytotoxic effect of the methanolic extract of S. timida seeds. The chemical composition of the seed extract was directly investigated by NMR and UPLC-QToF MS and the pre- and post-emergence phytotoxic effect on a eudicotyledonous model (Lactuca sativa) and a monocotyledonous model (Allium cepa) was evaluated through germination and seedling growth tests. Three concentrations of the extract (0.25, 0.50, and 1.00 mg/mL) were prepared, and four replicates for each of them were analyzed. Three major phenylphenalenones were identified by NMR spectroscopy: 4-hydroxy-anigorufone, methoxyanigorufone, and anigorufone, two of those reported for the first time in S. timida. The presence of seven other phenylphenalenones was suggested by the LC-MS analyses. The phenylphenalenone mixture did not affect the germination rate, but impaired radicle and hypocotyl growth on both models. The effect in the monocotyledonous model was statistically similar to glyphosate in the lowest concentration (0.25 mg/mL). Therefore, although more research on this topic is required to probe this first report, this investigation suggests for the first time that phenylphenalenone compound... Mostrar Tudo |
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Palavras-Chave: |
Phenylphenalenones; Schiekia timida; UPLC-HRMS. |
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Categoria do assunto: |
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Marc: |
LEADER 02161naa a2200229 a 4500
001 2134309
005 2022-06-10
008 2021 bl uuuu u00u1 u #d
022 $a1433-1373
100 1 $aOCAMPOS, F. M. M.
245 $aPhytotoxicity of Schiekia timida seed extracts, a mixture of phenylphenalenones.$h[electronic resource]
260 $c2021
300 $a1 - 13
520 $a: Phenylphenalenones, metabolites found in Schiekia timida (Haemodoraceae), are a class of specialized metabolites with many biological activities, being phytoalexins in banana plants. In the constant search to solve the problem of glyphosate and to avoid resistance to commercial herbicides, this work aimed to investigate the phytotoxic effect of the methanolic extract of S. timida seeds. The chemical composition of the seed extract was directly investigated by NMR and UPLC-QToF MS and the pre- and post-emergence phytotoxic effect on a eudicotyledonous model (Lactuca sativa) and a monocotyledonous model (Allium cepa) was evaluated through germination and seedling growth tests. Three concentrations of the extract (0.25, 0.50, and 1.00 mg/mL) were prepared, and four replicates for each of them were analyzed. Three major phenylphenalenones were identified by NMR spectroscopy: 4-hydroxy-anigorufone, methoxyanigorufone, and anigorufone, two of those reported for the first time in S. timida. The presence of seven other phenylphenalenones was suggested by the LC-MS analyses. The phenylphenalenone mixture did not affect the germination rate, but impaired radicle and hypocotyl growth on both models. The effect in the monocotyledonous model was statistically similar to glyphosate in the lowest concentration (0.25 mg/mL). Therefore, although more research on this topic is required to probe this first report, this investigation suggests for the first time that phenylphenalenone compounds may be post-emergence herbicides
653 $aPhenylphenalenones
653 $aSchiekia timida
653 $aUPLC-HRMS
700 1 $aSOUZA, A. J. B. de
700 1 $aANTAR, G. M.
700 1 $aWOUTERS, F. C.
700 1 $aCOLNAGO, L. A.
773 $tMolecules$gv. 26, 4197. 2021.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Territorial. |
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Data corrente: |
19/12/2014 |
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Data da última atualização: |
19/12/2014 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
NOGUEIRA, S. F.; MACEDO, M. C. M.; POCCARD-CHAPUIS, R.; SILVA, G. B. S. da; VICTORIA, D. de C.; ANDRADE, R. G.; AGUIAR, D. A. DE.; BOLFE, E. L. |
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Afiliação: |
SANDRA FURLAN NOGUEIRA, CNPM; MANUEL CLAUDIO MOTTA MACEDO, CNPGC; RENÉ POCCARD-CHAPUIS, CIRAD; GUSTAVO BAYMA SIQUEIRA DA SILVA, CNPM; DANIEL DE CASTRO VICTORIA, CNPM; RICARDO GUIMARAES ANDRADE, CNPM; DANIEL A. DE AGUIAR, AGROSATÉLITE; EDSON LUIS BOLFE, CNPM. |
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Título: |
Geotechnologies for monitoring pasture degradation levels in Brazil. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 51., 2014, Barra dos Coqueiros. A produção animal frente às mudanças climáticas e tecnológicas - anais. Barra dos coqueiros: Sociedade Brasileira de Zootecnia, 2014. |
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Páginas: |
1 p. |
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Idioma: |
Inglês |
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Conteúdo: |
Extensive livestock represents around 93% of cattle production in Brazil and pasture is its main food source. For this reason, the sector considers pasture degradation an important problem, being responsible for economic and environmental losses. Several sources indicate that more than 60% of the 160 million hectare of Brazilian pastures shows some level of degradation. The need for precise information about degraded pasture levels, localization and quantities leaded to the GEODEGRADE project. More details and results can be found at the website: http://www.geodegrade.cnpm.embrapa.br. |
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Palavras-Chave: |
Geotechnologies; MODIS; SPOT vegetation. |
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Thesaurus NAL: |
Degradation; Pastures; Remote sensing. |
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Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/114164/1/4291.pdf
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Marc: |
LEADER 01538nam a2200277 a 4500
001 2003339
005 2014-12-19
008 2014 bl uuuu u00u1 u #d
100 1 $aNOGUEIRA, S. F.
245 $aGeotechnologies for monitoring pasture degradation levels in Brazil.$h[electronic resource]
260 $aIn: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 51., 2014, Barra dos Coqueiros. A produção animal frente às mudanças climáticas e tecnológicas - anais. Barra dos coqueiros: Sociedade Brasileira de Zootecnia$c2014
300 $a1 p.
520 $aExtensive livestock represents around 93% of cattle production in Brazil and pasture is its main food source. For this reason, the sector considers pasture degradation an important problem, being responsible for economic and environmental losses. Several sources indicate that more than 60% of the 160 million hectare of Brazilian pastures shows some level of degradation. The need for precise information about degraded pasture levels, localization and quantities leaded to the GEODEGRADE project. More details and results can be found at the website: http://www.geodegrade.cnpm.embrapa.br.
650 $aDegradation
650 $aPastures
650 $aRemote sensing
653 $aGeotechnologies
653 $aMODIS
653 $aSPOT vegetation
700 1 $aMACEDO, M. C. M.
700 1 $aPOCCARD-CHAPUIS, R.
700 1 $aSILVA, G. B. S. da
700 1 $aVICTORIA, D. de C.
700 1 $aANDRADE, R. G.
700 1 $aAGUIAR, D. A. DE.
700 1 $aBOLFE, E. L.
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