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| Registros recuperados : 25 | |
| Registros recuperados : 25 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
27/06/2013 |
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Data da última atualização: |
01/07/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
FONSECA, R. R. da; ORTIZ-RAMÍREZ, F. A.; CAVALCANTI, D. N.; RAMOS, C. J. B.; TEIXEIRA, V. L.; SOUSA FILHO, A. P. da S. |
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Afiliação: |
Rainiomar Raimundo da Fonseca, PÓS-GRADUANDO Universidade Federal Fluminense; Fredy A. Ortiz-Ramírez, PÓS-GRADUANDO Universidade Federal Fluminense; Diana N. Cavalcanti, PÓS-GRADUANDA Universidade Federal Fluminense; Carlos José B. Ramos, UFF; Valéria L. Teixeira, UFF; ANTONIO PEDRO DA SILVA SOUZA FILHO, CPATU. |
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Título: |
Allelopathic potential of extracts the from marine macroalga Plocamium brasiliense and their effects on pasture weed. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Revista Brasileira de Farmacognosia, v. 22, n. 4, p. 850-853, July/Aug. 2012. |
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DOI: |
http://dx.doi.org/10.1590/S0102-695X2012005000065 |
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Idioma: |
Inglês |
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Conteúdo: |
Four extracts from the marine red alga Plocamium brasiliense (Greville) M.A.Howe & W.R.Taylor were prepared to identify and characterize their potential allelopathic effects on seed germination, radicle elongation and hypocotyl development of the weeds Mimosa pudica L. and Senna obtusifolia (L.) Irwin & Barneby. The four extracts were prepared in a sequence of solvents of increasing polarity: n-hexane, dichloromethane, ethyl acetate and ethanol/water (7:3). The germination bioassay was carried out at 25 °C with a 12 h photoperiod and the radicle elongation and hypocotyl development at 25 °C with a 24 h photoperiod. The dichloromethane extract showed inhibitory effects on seed germination of both plants (35 and 14%, respectively, in M. pudica and S. obtusifolia), radical germination (52 and 41.7%, respectively) and hypocotyl development (17.1 and 25.5%, respectively). Given the high sensitivity of this parameter to the potential allelopathic effects and the insufficient number of references found in the literature, these results are expected to stimulate new tests with other species of marine algae. Given the high sensitivity of the method for the detection of allelopathic potential, the species P. brasiliense emerges as a possible source of allelopathic substances against weed species. The results are attributed to the chemical composition, especially in relation to the presence of halogenated monoterpenes. |
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Palavras-Chave: |
Plocamium brasiliens. |
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Thesagro: |
Alelopatia; Germinação. |
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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/84883/1/aop07012.pdf
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Marc: |
LEADER 02218naa a2200229 a 4500
001 1960699
005 2022-07-01
008 2012 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1590/S0102-695X2012005000065$2DOI
100 1 $aFONSECA, R. R. da
245 $aAllelopathic potential of extracts the from marine macroalga Plocamium brasiliense and their effects on pasture weed.$h[electronic resource]
260 $c2012
520 $aFour extracts from the marine red alga Plocamium brasiliense (Greville) M.A.Howe & W.R.Taylor were prepared to identify and characterize their potential allelopathic effects on seed germination, radicle elongation and hypocotyl development of the weeds Mimosa pudica L. and Senna obtusifolia (L.) Irwin & Barneby. The four extracts were prepared in a sequence of solvents of increasing polarity: n-hexane, dichloromethane, ethyl acetate and ethanol/water (7:3). The germination bioassay was carried out at 25 °C with a 12 h photoperiod and the radicle elongation and hypocotyl development at 25 °C with a 24 h photoperiod. The dichloromethane extract showed inhibitory effects on seed germination of both plants (35 and 14%, respectively, in M. pudica and S. obtusifolia), radical germination (52 and 41.7%, respectively) and hypocotyl development (17.1 and 25.5%, respectively). Given the high sensitivity of this parameter to the potential allelopathic effects and the insufficient number of references found in the literature, these results are expected to stimulate new tests with other species of marine algae. Given the high sensitivity of the method for the detection of allelopathic potential, the species P. brasiliense emerges as a possible source of allelopathic substances against weed species. The results are attributed to the chemical composition, especially in relation to the presence of halogenated monoterpenes.
650 $aAlelopatia
650 $aGerminação
653 $aPlocamium brasiliens
700 1 $aORTIZ-RAMÍREZ, F. A.
700 1 $aCAVALCANTI, D. N.
700 1 $aRAMOS, C. J. B.
700 1 $aTEIXEIRA, V. L.
700 1 $aSOUSA FILHO, A. P. da S.
773 $tRevista Brasileira de Farmacognosia$gv. 22, n. 4, p. 850-853, July/Aug. 2012.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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