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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Soja. |
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Data corrente: |
15/04/1992 |
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Data da última atualização: |
17/04/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
HUNGRIA, M.; RUSCHEL, A. P. |
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Afiliação: |
MARIANGELA HUNGRIA DA CUNHA, CNPSO; ALAIDES PUPPIN RUSCHEL, CNPAF. |
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Título: |
Acetylene reduction, hydrogen evolution and nodule respiration in Phaseolus vulgaris. |
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Ano de publicação: |
1989 |
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Fonte/Imprenta: |
Biology and Fertility of Soils, v. 7, n. 4, p. 351-358, 1989. |
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Idioma: |
Inglês |
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Conteúdo: |
In an experiment performed under greenhouse conditions, four cultivars of Phaseolus vulgaris L. (Venezuela-350; Aroana; Moruna; Carioca) were inoculated with three Rhizobium leguminosarum biovar phaseoli strains (C-05; C-40 = CIAT 255; C-89 = CIAT 55) and were fertilized with an N-free mineral nutrient solution. The plants were harvested 25, 40, and 55 days after emergence and the following paramenters were evaluated: Nitrogenase activity of nodulated roots, H2 evolution by the nodules; relative efficiency of nitrogenase; respiration rates of nodulated roots and detached nodules; dry weight and total N of stems, leaves, pods, roots, and nodules. Generally the bean cultivar, Rhizobium strain, had an effect and there was an interaction effect with both symbiotic partners, on all parameters. On average, nodules represented 23% of total root respiration but the best symbiotic combinations showed lower ratios of C respired to N fixed. The maximum N-assimilation rate (between 40 and 55 days after emergence) of 11.93 mg N plant-1 day-1 occurred with the symbiotic combination of Carioca × C-05, while the poorest rate of 0.55 mg N plant-1 day-1 was recorded with Venezuela-350 × C-89. The best symbiotic combinations always showed the highest relative nitrogenase efficiency, but the differences in N2-fixation rates cannot be explained solely in terms of conservation of energy by recycling of H2. This requires further investigation. |
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Palavras-Chave: |
Acetylene reducion assay; Feijoeiro; Hydrogenase. |
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Thesagro: |
Feijão; Fixação de Nitrogênio; Nitrogenase; Nitrogênio; Nodulação; Phaseolus Vulgaris; Rhizobium. |
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Thesaurus Nal: |
acetylene; Ara; beans; nodulation. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02245naa a2200301 a 4500
001 1457760
005 2024-04-17
008 1989 bl uuuu u00u1 u #d
100 1 $aHUNGRIA, M.
245 $aAcetylene reduction, hydrogen evolution and nodule respiration in Phaseolus vulgaris.
260 $c1989
520 $aIn an experiment performed under greenhouse conditions, four cultivars of Phaseolus vulgaris L. (Venezuela-350; Aroana; Moruna; Carioca) were inoculated with three Rhizobium leguminosarum biovar phaseoli strains (C-05; C-40 = CIAT 255; C-89 = CIAT 55) and were fertilized with an N-free mineral nutrient solution. The plants were harvested 25, 40, and 55 days after emergence and the following paramenters were evaluated: Nitrogenase activity of nodulated roots, H2 evolution by the nodules; relative efficiency of nitrogenase; respiration rates of nodulated roots and detached nodules; dry weight and total N of stems, leaves, pods, roots, and nodules. Generally the bean cultivar, Rhizobium strain, had an effect and there was an interaction effect with both symbiotic partners, on all parameters. On average, nodules represented 23% of total root respiration but the best symbiotic combinations showed lower ratios of C respired to N fixed. The maximum N-assimilation rate (between 40 and 55 days after emergence) of 11.93 mg N plant-1 day-1 occurred with the symbiotic combination of Carioca × C-05, while the poorest rate of 0.55 mg N plant-1 day-1 was recorded with Venezuela-350 × C-89. The best symbiotic combinations always showed the highest relative nitrogenase efficiency, but the differences in N2-fixation rates cannot be explained solely in terms of conservation of energy by recycling of H2. This requires further investigation.
650 $aacetylene
650 $aAra
650 $abeans
650 $anodulation
650 $aFeijão
650 $aFixação de Nitrogênio
650 $aNitrogenase
650 $aNitrogênio
650 $aNodulação
650 $aPhaseolus Vulgaris
650 $aRhizobium
653 $aAcetylene reducion assay
653 $aFeijoeiro
653 $aHydrogenase
700 1 $aRUSCHEL, A. P.
773 $tBiology and Fertility of Soils$gv. 7, n. 4, p. 351-358, 1989.
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Embrapa Soja (CNPSO) |
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| 1. |  | WANTZEN, K. M.; NUNES DA CUNHA, C.; JUNK, W. J.; GIRARD, P.; ROSSETTO, O. C.; PENHA, J. M.; COUTO, E. G.; BECKER, M.; PRIANTE, G.; TOMAS, W. M.; SANTOS, S. A.; MARTA, J.; DOMINGOS, I.; SONODA, F.; CURVO, M.; CALLIL, C. Towards a sustainable management concept for ecosystem services of the Pantanal wetland. Ecohydrology & Hydrobiology, v. 8, n. 2-4, p. 115-138, 2008. 24 p. também In: JUNK, W. J.; SILVA, C. J. da.; NUNES DA CUNHA, C.; WANTZEN, K. M. (Ed.) The Pantanal: ecology, biodiversity and sustainable management of a large neotropical seasonal wetland. Sofia: Pensoft Publishers, 2011, p. -.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
| Biblioteca(s): Embrapa Pantanal. |
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