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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
16/09/1996 |
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Data da última atualização: |
16/09/1996 |
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Autoria: |
BODDEY, R. M.; OLIVEIRA, O. C. de; URQUIAGA, S.; REIS, V. M.; OLIVARES, F. L. de; BALDANI, V. L. D.; DOBEREINER, Johanna. |
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Título: |
Biological nitrogen fixation associated with sugar cane and rice: Contributions and prospects for improvement. |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
Plant and Soil, Netherlands, v. 174, p. 195-209, 1995. |
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Idioma: |
Inglês |
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Conteúdo: |
15N isotope and N balance studies performed over the last few years have shown that several Brazilian varieties of sugarcane are capable of obtaining over 60% of their nitrogen (>150 kg N ha-1 year-1) from biological nitrogen fixation (BNF). This may be due to the fact that this crop in Brazil has been systematically bred for high yields with low fertilizer N inputs. In the case of wetland rice, N balance experiments performed both in the field and in pots suggest that 30 to 60 N ha-1 crop-1 may be obtained from plant-associated BNF and that different varieties have different capacities to obtain N from this source. 15N2 incorporation studies have proved that wetland rice can obtain at least some N from BNF and acetylene reduction (AR) assays also indicate differences in N2-fixing ability between different rice varieties. However in situ AR field estimates suggest plant-associated BNF inputs to be less than 8 kg N ha-1 crop-1. The problems associated with the use of the 15N dilution technique for BNF quantification are discussed and illustrated with data from a recent study performed at EMBRAPA-CNPAB. Although many species of diazotrophs have been isolated from the rhizosphere of both sugarcane and wetland rice, the recent discovery of endophytic N2-fixing bacteria within roots, shoots and leaves of both crops suggests, at least in the case of sugarcane, that these bacteria may be the most important contributors to the observed BNF contributions. In sugarcane both Acetobacter diazotrophicus and ... Menos15N isotope and N balance studies performed over the last few years have shown that several Brazilian varieties of sugarcane are capable of obtaining over 60% of their nitrogen (>150 kg N ha-1 year-1) from biological nitrogen fixation (BNF). This may be due to the fact that this crop in Brazil has been systematically bred for high yields with low fertilizer N inputs. In the case of wetland rice, N balance experiments performed both in the field and in pots suggest that 30 to 60 N ha-1 crop-1 may be obtained from plant-associated BNF and that different varieties have different capacities to obtain N from this source. 15N2 incorporation studies have proved that wetland rice can obtain at least some N from BNF and acetylene reduction (AR) assays also indicate differences in N2-fixing ability between different rice varieties. However in situ AR field estimates suggest plant-associated BNF inputs to be less than 8 kg N ha-1 crop-1. The problems associated with the use of the 15N dilution technique for BNF quantification are discussed and illustrated with data from a recent study performed at EMBRAPA-CNPAB. Although many species of diazotrophs have been isolated from the rhizosphere of both sugarcane and wetland rice, the recent discovery of endophytic N2-fixing bacteria within roots, shoots and leaves of both crops suggests, at least in the case of sugarcane, that these bacteria may be the most important contributors to the observed BNF contributions. In sugarcane both Acetoba... Mostrar Tudo |
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Palavras-Chave: |
Acetobacter diazotrophicus; BNF; FBN; Fixacao biologica de nitrogenio; Nitrogen fixing bacteria. |
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Thesagro: |
Arroz; Cana de Açúcar. |
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Thesaurus Nal: |
Herbaspirillum; rice; sugarcane. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02419naa a2200313 a 4500
001 1600502
005 1996-09-16
008 1995 bl --- 0-- u #d
100 1 $aBODDEY, R. M.
245 $aBiological nitrogen fixation associated with sugar cane and rice$bContributions and prospects for improvement.
260 $c1995
520 $a15N isotope and N balance studies performed over the last few years have shown that several Brazilian varieties of sugarcane are capable of obtaining over 60% of their nitrogen (>150 kg N ha-1 year-1) from biological nitrogen fixation (BNF). This may be due to the fact that this crop in Brazil has been systematically bred for high yields with low fertilizer N inputs. In the case of wetland rice, N balance experiments performed both in the field and in pots suggest that 30 to 60 N ha-1 crop-1 may be obtained from plant-associated BNF and that different varieties have different capacities to obtain N from this source. 15N2 incorporation studies have proved that wetland rice can obtain at least some N from BNF and acetylene reduction (AR) assays also indicate differences in N2-fixing ability between different rice varieties. However in situ AR field estimates suggest plant-associated BNF inputs to be less than 8 kg N ha-1 crop-1. The problems associated with the use of the 15N dilution technique for BNF quantification are discussed and illustrated with data from a recent study performed at EMBRAPA-CNPAB. Although many species of diazotrophs have been isolated from the rhizosphere of both sugarcane and wetland rice, the recent discovery of endophytic N2-fixing bacteria within roots, shoots and leaves of both crops suggests, at least in the case of sugarcane, that these bacteria may be the most important contributors to the observed BNF contributions. In sugarcane both Acetobacter diazotrophicus and ...
650 $aHerbaspirillum
650 $arice
650 $asugarcane
650 $aArroz
650 $aCana de Açúcar
653 $aAcetobacter diazotrophicus
653 $aBNF
653 $aFBN
653 $aFixacao biologica de nitrogenio
653 $aNitrogen fixing bacteria
700 1 $aOLIVEIRA, O. C. de
700 1 $aURQUIAGA, S.
700 1 $aREIS, V. M.
700 1 $aOLIVARES, F. L. de
700 1 $aBALDANI, V. L. D.
700 1 $aDOBEREINER, Johanna.
773 $tPlant and Soil, Netherlands$gv. 174, p. 195-209, 1995.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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Origem |
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Cutter |
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URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
10/11/2016 |
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Data da última atualização: |
02/12/2016 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
MOREIRA, E. D. S.; LANA, A. L. M. Q.; GONTIJO NETO, M.; SOUSA, J. C. da C. de; MELO, I. G.; REIS, D. P. dos; MARRIEL, I. E. |
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Afiliação: |
ELWIRA DAPHINN SILVA MOREIRA, UFMG, Belo Horizonte, MG.; ANGELA LANA MARIA QUINTAO LANA, UFMG, Belo Horizonte, MG.; MIGUEL MARQUES GONTIJO NETO, CNPMS; JAINE CRISTINE DA COSTA DE SOUSA, UNIFEMM, Sete Lagoas, MG.; IZABELLE GONÇALVES MELO, UFSJ, Campus de Sete Lagoas, MG.; DENISE PACHECO DOS REIS, UFSJ, Campus de Sete Lagoas, MG.; IVANILDO EVODIO MARRIEL, CNPMS. |
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Título: |
Alterações das enzimas urease e arginase em solo do cerrado sob sistema de Integração Lavoura Pecuária e Floresta. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 32.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 16.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 14.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 11., 2016, Goiânia. Rumo aos novos desafios: [anais]. Viçosa, MG: Sociedade Brasileira de Ciência do Solo, 2016. |
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Páginas: |
p. 1040. |
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Idioma: |
Português |
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Notas: |
FertBio 2016. |
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Palavras-Chave: |
Capim piatã; Perfil ureolítico; Sistema integrado. |
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Thesaurus NAL: |
arginase. |
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Categoria do assunto: |
S Ciências Biológicas |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/149929/1/Alteracoes-enzimas.pdf
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Marc: |
LEADER 01033nam a2200241 a 4500
001 2056204
005 2016-12-02
008 2016 bl uuuu u00u1 u #d
100 1 $aMOREIRA, E. D. S.
245 $aAlterações das enzimas urease e arginase em solo do cerrado sob sistema de Integração Lavoura Pecuária e Floresta.$h[electronic resource]
260 $aIn: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 32.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 16.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 14.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 11., 2016, Goiânia. Rumo aos novos desafios: [anais]. Viçosa, MG: Sociedade Brasileira de Ciência do Solo$c2016
300 $ap. 1040.
500 $aFertBio 2016.
650 $aarginase
653 $aCapim piatã
653 $aPerfil ureolítico
653 $aSistema integrado
700 1 $aLANA, A. L. M. Q.
700 1 $aGONTIJO NETO, M.
700 1 $aSOUSA, J. C. da C. de
700 1 $aMELO, I. G.
700 1 $aREIS, D. P. dos
700 1 $aMARRIEL, I. E.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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