Flavonoids from leaves of Derris urucu: assessment of potential effects on seed germination and development of weeds
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...
| Autor principal: | SILVA, Ewerton Afonso Silva da |
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| Outros Autores: | LÔBO, Lívia Trindade, SILVA, Geilson Alcantara da, SOUZA FILHO, Antonio Pedro da Silva, SILVA, Milton Nascimento da, ARRUDA, Alberto Cardoso, GUILHON, Giselle Maria Skelding Pinheiro, SANTOS, Lourivaldo da Silva, ARRUDA, Mara Silvia Pinheiro |
| Grau: | Artigo |
| Idioma: | eng |
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2014
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http://repositorio.ufpa.br/jspui/handle/2011/4552 |
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ir-2011-4552 |
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ir-2011-45522019-05-23T13:25:54Z Flavonoids from leaves of Derris urucu: assessment of potential effects on seed germination and development of weeds SILVA, Ewerton Afonso Silva da LÔBO, Lívia Trindade SILVA, Geilson Alcantara da SOUZA FILHO, Antonio Pedro da Silva SILVA, Milton Nascimento da ARRUDA, Alberto Cardoso GUILHON, Giselle Maria Skelding Pinheiro SANTOS, Lourivaldo da Silva ARRUDA, Mara Silvia Pinheiro Alelopatia Derris urucu Flavonóides Germinação vegetal Sementes Desenvolvimento vegetal Amazônia brasileira 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. Em estudos anteriores descrevemos o isolamento de nove substâncias, a partir das folhas de Derris urucu, uma espécie encontrada amplamente na floresta Amazônica, as quais foram identificadas como cinco estilbenos e quatro diidroflavonóis. Neste trabalho, três desses diidroflavonóis [urucuol A (1), urucuol B (2) e isotirumalina (3)] foram avaliados para identificar seus potenciais como aleloquímicos. Estamos relatando também, o isolamento e a determinação estrutural de um novo flavonóide [5,3′-diidroxi-4′-metoxi-(7,6:5″,6″)-2″,2″-dimetilpiranoflavanona (4)]. Investigamos os efeitos dos diidroflavonóis 1-3 sobre a germinação de sementes e desenvolvimento da radícula e do hipocótilo da planta daninha Mimosa pudica, usando soluções a 150 mg.L–1. Urucuol B, isoladamente, foi quem apresentou o maior potencial para inibir a germinação de sementes (26%), por sua vez, isotirulamina exibiu maior capacidade para reduzir o desenvolvimento do hipocótilo (25%), porém nenhuma das três substâncias mostrou potencial para inibir o desenvolvimento da radícula. Quando combinadas aos pares, as substâncias mostraram sinergismo ao desenvolvimento da radícula e do hipocótilo e efeitos, na germinação de sementes, que poderiam ser atribuídos a antagonismo. Quando testadas separadamente, as substâncias apresentaram maior tendência para inibir a germinação de sementes, enquanto que, quando testadas aos pares, observou-se aumento no efeito de inibição do desenvolvimento da planta daninha. 2014-01-02T13:03:40Z 2014-01-02T13:03:40Z 2013-09 Artigo de Periódico SILVA, Ewerton A. S. da et al. Flavonoids from leaves of Derris urucu: assessment of potential effects on seed germination and development of weeds. Anais da Academia Brasileira de Ciências, Rio de Janeiro, v. 85, n. 3, p. 881-889, set. 2013. Disponível em: <http://www.scielo.br/pdf/aabc/v85n3/0001-3765-aabc-85-03-881.pdf>. Acesso em: 18 dez. 2013. <http://dx.doi.org/10.1590/S0001-37652013000300004>. 0101-8175 http://repositorio.ufpa.br/jspui/handle/2011/4552 eng Acesso Aberto application/pdf |
| institution |
Repositório Institucional - Universidade Federal do Pará |
| collection |
RI-UFPA |
| language |
eng |
| topic |
Alelopatia Derris urucu Flavonóides Germinação vegetal Sementes Desenvolvimento vegetal Amazônia brasileira |
| spellingShingle |
Alelopatia Derris urucu Flavonóides Germinação vegetal Sementes Desenvolvimento vegetal Amazônia brasileira SILVA, Ewerton Afonso Silva da Flavonoids from leaves of Derris urucu: assessment of potential effects on seed germination and development of weeds |
| topic_facet |
Alelopatia Derris urucu Flavonóides Germinação vegetal Sementes Desenvolvimento vegetal Amazônia brasileira |
| description |
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. |
| format |
Artigo |
| author |
SILVA, Ewerton Afonso Silva da |
| author2 |
LÔBO, Lívia Trindade SILVA, Geilson Alcantara da SOUZA FILHO, Antonio Pedro da Silva SILVA, Milton Nascimento da ARRUDA, Alberto Cardoso GUILHON, Giselle Maria Skelding Pinheiro SANTOS, Lourivaldo da Silva ARRUDA, Mara Silvia Pinheiro |
| author2Str |
LÔBO, Lívia Trindade SILVA, Geilson Alcantara da SOUZA FILHO, Antonio Pedro da Silva SILVA, Milton Nascimento da ARRUDA, Alberto Cardoso GUILHON, Giselle Maria Skelding Pinheiro SANTOS, Lourivaldo da Silva ARRUDA, Mara Silvia Pinheiro |
| title |
Flavonoids from leaves of Derris urucu: assessment of potential effects on seed germination and development of weeds |
| title_short |
Flavonoids from leaves of Derris urucu: assessment of potential effects on seed germination and development of weeds |
| title_full |
Flavonoids from leaves of Derris urucu: assessment of potential effects on seed germination and development of weeds |
| title_fullStr |
Flavonoids from leaves of Derris urucu: assessment of potential effects on seed germination and development of weeds |
| title_full_unstemmed |
Flavonoids from leaves of Derris urucu: assessment of potential effects on seed germination and development of weeds |
| title_sort |
flavonoids from leaves of derris urucu: assessment of potential effects on seed germination and development of weeds |
| publishDate |
2014 |
| url |
http://repositorio.ufpa.br/jspui/handle/2011/4552 |
| _version_ |
1832603433403678720 |
| score |
11.755432 |