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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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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 |
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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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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
03/05/2011 |
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Data da última atualização: |
31/07/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 2 |
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Autoria: |
OLIVEIRA, J. P.; GALLI-TERASAWA. L. V.; ENKE, C. G.; CORDEIRO, V. K.; ARMSTRONG, L. C. T.; HUNGRIA, M. |
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Afiliação: |
JOSIELE POLZIN OLIVEIRA, UFPR; LYGIA VITORIA GALLI-TERASAWA, UFPR; CHIRLEI GLI ENKE, UFPR; VANESSA KAVA CORDEIRO, UFPR; LARICE CAROLINA TAVARES ARMSTRONG, UFPR; MARIANGELA HUNGRIA DA CUNHA, CNPSO. |
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Título: |
Genetic diversity of rhizobia in a Brazilian oxisol nodulating Mesoamerican and Andean genotypes of common bean (Phaseolus vulgaris L.). |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
World Journal of Microbiology and Biotechnology, Oxford, v. 27, n. 3, p. 643-650, 2011. |
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Páginas: |
8 p. |
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DOI: |
10.1007/s11274-010-0501-9 |
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Idioma: |
Inglês |
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Conteúdo: |
Brazil is the largest producer and consumer of common bean worldwide, and the crop can benefit from its symbiosis with a variety of rhizobia by means of biological nitrogen fixation in root nodules. In this study, the role of Mesoamerican and Andean genotypes of common bean in trapping rhizobia directly from a Brazilian oxisol in the field or in pots in greenhouse conditions with unaltered or diluted soil solutions was investigated. Genetic diversity was evaluated by the profiles of BOX-PCR obtained, and by estimates of Shannon and Abundance-based Coverage Estimator (ACE) indices. Rhizobia trapped by Mesomaerican genotypes had greater diversity, reinforcing the hypothesis of an important and long-time contribution of this genetic center to the establishment of common bean in Brazil. Greater diversity was also seen in rhizobia trapped straight from the soil than from plants inoculated with diluted soil solutions, emphasizing a highly diverse and competitive rhizobial indigenous population. Studies on genetic diversity of common bean rhizobia are important not only for helping to understand the evolution of the legume-rhizobia symbiosis, but also to devise strategies to increase the contribution of the biological nitrogen-fixation process. |
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Thesagro: |
Fixação de nitrogênio. |
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Thesaurus NAL: |
Nitrogen fixation. |
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Categoria do assunto: |
S Ciências Biológicas |
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Marc: |
LEADER 02011naa a2200229 a 4500
001 1887395
005 2017-07-31
008 2011 bl uuuu u00u1 u #d
024 7 $a10.1007/s11274-010-0501-9$2DOI
100 1 $aOLIVEIRA, J. P.
245 $aGenetic diversity of rhizobia in a Brazilian oxisol nodulating Mesoamerican and Andean genotypes of common bean (Phaseolus vulgaris L.).
260 $c2011
300 $a8 p.
520 $aBrazil is the largest producer and consumer of common bean worldwide, and the crop can benefit from its symbiosis with a variety of rhizobia by means of biological nitrogen fixation in root nodules. In this study, the role of Mesoamerican and Andean genotypes of common bean in trapping rhizobia directly from a Brazilian oxisol in the field or in pots in greenhouse conditions with unaltered or diluted soil solutions was investigated. Genetic diversity was evaluated by the profiles of BOX-PCR obtained, and by estimates of Shannon and Abundance-based Coverage Estimator (ACE) indices. Rhizobia trapped by Mesomaerican genotypes had greater diversity, reinforcing the hypothesis of an important and long-time contribution of this genetic center to the establishment of common bean in Brazil. Greater diversity was also seen in rhizobia trapped straight from the soil than from plants inoculated with diluted soil solutions, emphasizing a highly diverse and competitive rhizobial indigenous population. Studies on genetic diversity of common bean rhizobia are important not only for helping to understand the evolution of the legume-rhizobia symbiosis, but also to devise strategies to increase the contribution of the biological nitrogen-fixation process.
650 $aNitrogen fixation
650 $aFixação de nitrogênio
700 1 $aGALLI-TERASAWA. L. V.
700 1 $aENKE, C. G.
700 1 $aCORDEIRO, V. K.
700 1 $aARMSTRONG, L. C. T.
700 1 $aHUNGRIA, M.
773 $tWorld Journal of Microbiology and Biotechnology, Oxford$gv. 27, n. 3, p. 643-650, 2011.
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