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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
13/08/2007 |
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Data da última atualização: |
08/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ARAÚJO, G. C. L.; LEMOS, S. G.; FERREIRA, A. G.; FREITAS, H.; NOGUEIRA, A. R. de A. |
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Afiliação: |
G. C. L. ARAÚJO, UFSCar; SERLAN G. LEMOS, UFSCar; ANTONIO GILBERTO FERREIRA, UFSCar; H. FREITAS, UFSCar; ANA RITA DE ARAUJO NOGUEIRA, CPPSE. |
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Título: |
Effect of pre-treatment and supporting media on Ni(II), Cu(II), Al(III) and Fe(III) sorption by plant root material. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Chemosphere, v. 68, n. 3, p. 537-545, jun. 2007. |
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DOI: |
10.1016/j.chemosphere.2006.12.054 |
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Idioma: |
Inglês |
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Conteúdo: |
In this work Paspalum notatum root material was used to elucidate the influence of acid leaching pre-treatment and of sorption medium on metal adsorption. Ground P. notatum root was leached with 0.14 M HNO3. Leached root material (LRM) and non-leached root material (NLRM) were employed to flow sorption of Ni(II), Cu(II), Al(III) and Fe(III) in 0.5 M CH3COONH4 medium at pH 6.5. For LRM the sorption was also studied in 0.5 M KNO3 medium. The acid pre-treatment increased the sorption capacity (SC) for all ions studied. For the KNO3 medium, Cu(II) and Fe(III) sorption was higher than in CH3COONH4 and the type of the Ni(II) isotherm?s model changed. The Freundlich model was the most representative isotherm model to describe metallic ions sorption. The 1H NMR spectra showed differences between LRM and NLRM and the acid-basic potentiometric titration elucidated that acid-leaching procedure affected the root material sorption sites once only two predominant sorption sites were found for LRM (phenolic and amine, both able cations sorption) and five sorption sites (two carboxylic, amine and two phenolic) were founded for NLRM. |
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Palavras-Chave: |
Pre treatment effect; Sorption sites investigation; Supporting media. |
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Thesaurus Nal: |
biosorption. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
LEADER 01874naa a2200229 a 4500
001 1032566
005 2023-03-08
008 2007 bl uuuu u00u1 u #d
024 7 $a10.1016/j.chemosphere.2006.12.054$2DOI
100 1 $aARAÚJO, G. C. L.
245 $aEffect of pre-treatment and supporting media on Ni(II), Cu(II), Al(III) and Fe(III) sorption by plant root material.$h[electronic resource]
260 $c2007
520 $aIn this work Paspalum notatum root material was used to elucidate the influence of acid leaching pre-treatment and of sorption medium on metal adsorption. Ground P. notatum root was leached with 0.14 M HNO3. Leached root material (LRM) and non-leached root material (NLRM) were employed to flow sorption of Ni(II), Cu(II), Al(III) and Fe(III) in 0.5 M CH3COONH4 medium at pH 6.5. For LRM the sorption was also studied in 0.5 M KNO3 medium. The acid pre-treatment increased the sorption capacity (SC) for all ions studied. For the KNO3 medium, Cu(II) and Fe(III) sorption was higher than in CH3COONH4 and the type of the Ni(II) isotherm?s model changed. The Freundlich model was the most representative isotherm model to describe metallic ions sorption. The 1H NMR spectra showed differences between LRM and NLRM and the acid-basic potentiometric titration elucidated that acid-leaching procedure affected the root material sorption sites once only two predominant sorption sites were found for LRM (phenolic and amine, both able cations sorption) and five sorption sites (two carboxylic, amine and two phenolic) were founded for NLRM.
650 $abiosorption
653 $aPre treatment effect
653 $aSorption sites investigation
653 $aSupporting media
700 1 $aLEMOS, S. G.
700 1 $aFERREIRA, A. G.
700 1 $aFREITAS, H.
700 1 $aNOGUEIRA, A. R. de A.
773 $tChemosphere$gv. 68, n. 3, p. 537-545, jun. 2007.
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
17/02/2016 |
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Data da última atualização: |
17/02/2016 |
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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: |
PEREIRA, R.; SOUZA, E. A.; BARCELOS, Q. L.; ABREU, A. F. B.; LIBRELON, S. S. |
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Afiliação: |
R. PEREIRA, UFLA; E. A. SOUZA, UFLA; Q. L. BARCELOS, UFMT, Sinop-MT; ANGELA DE FATIMA BARBOSA ABREU, CNPAF; S. S. LIBRELON, UFLA. |
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Título: |
Aggressiveness of Pseudocercospora griseola strains in common bean genotypes and implications for genetic improvement. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Genetics and Molecular Research, Ribeirão Preto, v. 14, n. 2, p. 5044-5053, 2015. |
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ISSN: |
1676-5680 |
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DOI: |
10.4238/2015.May.12.7 |
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Idioma: |
Inglês |
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Conteúdo: |
The fungus Pseudocercospora griseola, the causal agent of angular leaf spot in the common bean (Phaseolus vulgaris L.), exhibits a broad pathogenic variability that complicates the development of resistant cultivars. For breeding programs to successfully obtain common bean cultivars with durable resistance, knowing the aggressiveness of different strains, as well as the mechanisms of genetic resistance, is important. The aims of this study were to study the variation within race 63.63 by evaluating the aggressiveness of different strains, to analyze the genetic resistance of common bean lines to P. griseola , and to ascertain the implications for genetic improvement in obtaining resistance in this pathosystem. Four strains, collected from different locations, were inoculated in three groups of common bean lines in a greenhouse, and the severity of the disease was subsequently evaluated. Statistical analyses were carried out using the diallel method, which provided information on the vertical and horizontal resistance of host plants, in addition to information regarding the aggressiveness of the strains. The aggressiveness of P. griseola differed between the strains of race 63.63. The diallel method proved to be promising for the identification of horizontal and vertical resistance in the common bean-P. griseola pathosystem, with a predominance of horizontal resistance. Gene pyramiding, using marker-assisted selection, may not be the most effective strategy for obtaining durable resistance. MenosThe fungus Pseudocercospora griseola, the causal agent of angular leaf spot in the common bean (Phaseolus vulgaris L.), exhibits a broad pathogenic variability that complicates the development of resistant cultivars. For breeding programs to successfully obtain common bean cultivars with durable resistance, knowing the aggressiveness of different strains, as well as the mechanisms of genetic resistance, is important. The aims of this study were to study the variation within race 63.63 by evaluating the aggressiveness of different strains, to analyze the genetic resistance of common bean lines to P. griseola , and to ascertain the implications for genetic improvement in obtaining resistance in this pathosystem. Four strains, collected from different locations, were inoculated in three groups of common bean lines in a greenhouse, and the severity of the disease was subsequently evaluated. Statistical analyses were carried out using the diallel method, which provided information on the vertical and horizontal resistance of host plants, in addition to information regarding the aggressiveness of the strains. The aggressiveness of P. griseola differed between the strains of race 63.63. The diallel method proved to be promising for the identification of horizontal and vertical resistance in the common bean-P. griseola pathosystem, with a predominance of horizontal resistance. Gene pyramiding, using marker-assisted selection, may not be the most effective strategy for obtaining dura... Mostrar Tudo |
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Palavras-Chave: |
Melhoramento genético; Pseudocercospora griseola. |
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Thesagro: |
Feijão; Fungo; Phaseolus vulgaris. |
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Thesaurus NAL: |
Genetic improvement. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/139215/1/CNPAF-2015-gmrafba.pdf
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Marc: |
LEADER 02351naa a2200265 a 4500
001 2037340
005 2016-02-17
008 2015 bl uuuu u00u1 u #d
022 $a1676-5680
024 7 $a10.4238/2015.May.12.7$2DOI
100 1 $aPEREIRA, R.
245 $aAggressiveness of Pseudocercospora griseola strains in common bean genotypes and implications for genetic improvement.$h[electronic resource]
260 $c2015
520 $aThe fungus Pseudocercospora griseola, the causal agent of angular leaf spot in the common bean (Phaseolus vulgaris L.), exhibits a broad pathogenic variability that complicates the development of resistant cultivars. For breeding programs to successfully obtain common bean cultivars with durable resistance, knowing the aggressiveness of different strains, as well as the mechanisms of genetic resistance, is important. The aims of this study were to study the variation within race 63.63 by evaluating the aggressiveness of different strains, to analyze the genetic resistance of common bean lines to P. griseola , and to ascertain the implications for genetic improvement in obtaining resistance in this pathosystem. Four strains, collected from different locations, were inoculated in three groups of common bean lines in a greenhouse, and the severity of the disease was subsequently evaluated. Statistical analyses were carried out using the diallel method, which provided information on the vertical and horizontal resistance of host plants, in addition to information regarding the aggressiveness of the strains. The aggressiveness of P. griseola differed between the strains of race 63.63. The diallel method proved to be promising for the identification of horizontal and vertical resistance in the common bean-P. griseola pathosystem, with a predominance of horizontal resistance. Gene pyramiding, using marker-assisted selection, may not be the most effective strategy for obtaining durable resistance.
650 $aGenetic improvement
650 $aFeijão
650 $aFungo
650 $aPhaseolus vulgaris
653 $aMelhoramento genético
653 $aPseudocercospora griseola
700 1 $aSOUZA, E. A.
700 1 $aBARCELOS, Q. L.
700 1 $aABREU, A. F. B.
700 1 $aLIBRELON, S. S.
773 $tGenetics and Molecular Research, Ribeirão Preto$gv. 14, n. 2, p. 5044-5053, 2015.
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Embrapa Arroz e Feijão (CNPAF) |
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