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| 2. |  | KOLLER, W. W.; BARROS, A. T. M. de; GOMES, A.; MADRUGA, C. R.; ARAUJO, C. P. de; UMAKI, A.; ISMAEL, A. P. K. Sazonalidade tabanideos (Diptera: Tabanidae) em area de transicao entre cerrado e Pantanal, no Mato Grosso do Sul, Brasil. In: CONGRESSO BRASILEIRO DE PARASITOLOGIA VETERINARIA, 12.,; SEMINARIO DE PARASITOSES NA CLINICA DE PEQUENOS ANIMAIS, 1.,; SEMINARIO DE COCCIDIOS E COCCIDIOSES, 1; SEMINARIO DE MANEJO INTEGRADO DA RESISTENCIA, 1.; CURSO DE GEOPROCESSAMENTO E SEU USO EM ESTUDOS EPIDEMIOLOGICOS, 2002, Rio de Janeiro. [Anais...] Rio de Janeiro: UFRRJ: Colegio Brasileiro de Parasitologia Veterinaria, 2002. CD-Rom.| Biblioteca(s): Embrapa Pantanal. |
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| 3. | | MADRUGA, C. R.; MARQUES, A. P. C.; ARAUJO, F. R.; MIGUITA, M.; CARVALHO, C. M. E.; ARAUJO, F. S.; UMAKI, A. C. S.; CROCCI, A. J.; QUEIROZ, R. A. Evaluation of an ELISA for detection of antibodies to Babesia bigemin in cattle and it's application in an epidemiological survey in Brazil. Pesquisa Veterinaria Brasileira, Rio de Janeiro, v.21, n.2, p.72-76, abr. / jun. 2001. CNPGC.| Biblioteca(s): Embrapa Gado de Corte. |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
13/11/2013 |
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Data da última atualização: |
04/07/2022 |
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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: |
SILVA, E. A. S. da; LÔBO, L. T.; SILVA, G. A. da; SOUZA FILHO, A. P. da S.; SILVA, M. N. da; ARRUDA, A. C.; GUILHON, G. M. S. P.; SANTOS, L. S.; ARRUDA, M. S. P. |
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Afiliação: |
EWERTON A. S. DA SILVA, PÓS-GRADUANDA UFPA; LIVIA T. LÔBO, PÓS-GRADUANDA UFPA; GEILSON A. DA SILVA, PÓS-GRADUANDA UFPA; ANTONIO PEDRO DA SILVA SOUZA FILHO, CPATU; MILTON N. DA SILVA, PÓS-GRADUANDA UFPA; ALBERTO C. ARRUDA, PÓS-GRADUANDA UFPA; GISELLE M. S. P. GUILHON, PÓS-GRADUANDA UFPA; LOURIVALDO S. SANTOS, PÓS-GRADUANDA UFPA; MARA S. P. ARRUDA, PÓS-GRADUANDA UFPA. |
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Título: |
Flavonoids from leaves of Derris urucu: assessment of potential effects on seed germination and development of weeds. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Anais da Academia Brasileira de Ciências, v. 85, n. 3, p. 881-889, 2013. |
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Idioma: |
Inglês |
|
Conteúdo: |
In some previous studies, we described the isolation of nine compounds from leaves of Derris urucu, a species found widely in the Amazon rainforest, identified as five stilbenes and four dihydroflavonols. In this work, three of these dihydroflavonols [urucuol A (1), urucuol B (2) and isotirumalin (3)] were evaluated to identify their potential as allelochemicals, and we are also reporting the isolation and structural determination of a new flavonoid [5,3′-dihydroxy-4′-methoxy-(7,6:5′′,6′′)-2′′,2′′-dimethylpyranoflavanone (4)]. We investigated the effects of the dihydroflavonols 1-3 on seed germination and radicle and hypocotyl growth of the weed Mimosa pudica, using solutions at 150 mg.L-1. Urucuol B, alone, was the substance with the greatest potential to inhibit seed germination (26%), while isotirumalin showed greater ability to reduce the development of the hypocotyl (25%), but none of the three substances showed the potential to inhibit radicle. When combined in pairs, the substances showed synergism for the development of root and hypocotyl and effects on seed germination that could be attributed to antagonism. When tested separately, the trend has become more intense effects on seed germination, while for the substances tested in pairs, the intensity of the effect was greater on development of weed. |
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Palavras-Chave: |
Derris urucu; Germinação de sementes. |
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Thesagro: |
Alelopatia; Flavonóide. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/92512/1/0001-3765-aabc-85-03-881.pdf
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|
Marc: |
LEADER 02218naa a2200265 a 4500
001 1971153
005 2022-07-04
008 2013 bl uuuu u00u1 u #d
100 1 $aSILVA, E. A. S. da
245 $aFlavonoids from leaves of Derris urucu$bassessment of potential effects on seed germination and development of weeds.$h[electronic resource]
260 $c2013
520 $aIn some previous studies, we described the isolation of nine compounds from leaves of Derris urucu, a species found widely in the Amazon rainforest, identified as five stilbenes and four dihydroflavonols. In this work, three of these dihydroflavonols [urucuol A (1), urucuol B (2) and isotirumalin (3)] were evaluated to identify their potential as allelochemicals, and we are also reporting the isolation and structural determination of a new flavonoid [5,3′-dihydroxy-4′-methoxy-(7,6:5′′,6′′)-2′′,2′′-dimethylpyranoflavanone (4)]. We investigated the effects of the dihydroflavonols 1-3 on seed germination and radicle and hypocotyl growth of the weed Mimosa pudica, using solutions at 150 mg.L-1. Urucuol B, alone, was the substance with the greatest potential to inhibit seed germination (26%), while isotirumalin showed greater ability to reduce the development of the hypocotyl (25%), but none of the three substances showed the potential to inhibit radicle. When combined in pairs, the substances showed synergism for the development of root and hypocotyl and effects on seed germination that could be attributed to antagonism. When tested separately, the trend has become more intense effects on seed germination, while for the substances tested in pairs, the intensity of the effect was greater on development of weed.
650 $aAlelopatia
650 $aFlavonóide
653 $aDerris urucu
653 $aGerminação de sementes
700 1 $aLÔBO, L. T.
700 1 $aSILVA, G. A. da
700 1 $aSOUZA FILHO, A. P. da S.
700 1 $aSILVA, M. N. da
700 1 $aARRUDA, A. C.
700 1 $aGUILHON, G. M. S. P.
700 1 $aSANTOS, L. S.
700 1 $aARRUDA, M. S. P.
773 $tAnais da Academia Brasileira de Ciências$gv. 85, n. 3, p. 881-889, 2013.
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Embrapa Amazônia Oriental (CPATU) |
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