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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
06/06/2005 |
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Data da última atualização: |
06/06/2005 |
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Autoria: |
PURCELL, L. C.; SINCLAIR, T. R. |
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Título: |
Soybean (Glycine max) nodule physical traits associated with permeability responses to oxygen. |
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Ano de publicação: |
1993 |
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Fonte/Imprenta: |
Plant Physiology, Bethesda, v. 103, n. 1, p. 149-156, 1993. |
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Idioma: |
Inglês |
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Conteúdo: |
The hypothesis that modulation of water volume in the intercellular spaces of the nodule cortex changes the effective thickness of a diffusion barrier and accounts for changes in nodule permeability (P) was examined by evaluating physical traits of soyabean nodules. The density of nodules exposed to 21 kPa O2 increased as the time after detachment from the plant increased from 5 to 60 min. Nodules from plants shaded for 48 h had a lower fractional air space content than nodules from unshaded plants. P was decreased by nodule detachment and plant shading; in association with the changes in density and fractional air space, this supported the proposed hypothesis. Pressure-volume analysis determined that the intrinsic capacitance of nodules was 0.29 MPa-1, indicating that the tissue can release relatively large amounts of water from the symplast with only small changes in total nodule water potential. Estimates of the bulk modulus of elasticity ranged from 0.91 to 2.60 MPa and indicated a high degree of elasticity. It was concluded that the physical properties of nodules were consistent with P modulation by the release and uptake of intercellular water in the nodule cortex. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01599naa a2200133 a 4500
001 1468009
005 2005-06-06
008 1993 bl --- 0-- u #d
100 1 $aPURCELL, L. C.
245 $aSoybean (Glycine max) nodule physical traits associated with permeability responses to oxygen.
260 $c1993
520 $aThe hypothesis that modulation of water volume in the intercellular spaces of the nodule cortex changes the effective thickness of a diffusion barrier and accounts for changes in nodule permeability (P) was examined by evaluating physical traits of soyabean nodules. The density of nodules exposed to 21 kPa O2 increased as the time after detachment from the plant increased from 5 to 60 min. Nodules from plants shaded for 48 h had a lower fractional air space content than nodules from unshaded plants. P was decreased by nodule detachment and plant shading; in association with the changes in density and fractional air space, this supported the proposed hypothesis. Pressure-volume analysis determined that the intrinsic capacitance of nodules was 0.29 MPa-1, indicating that the tissue can release relatively large amounts of water from the symplast with only small changes in total nodule water potential. Estimates of the bulk modulus of elasticity ranged from 0.91 to 2.60 MPa and indicated a high degree of elasticity. It was concluded that the physical properties of nodules were consistent with P modulation by the release and uptake of intercellular water in the nodule cortex.
700 1 $aSINCLAIR, T. R.
773 $tPlant Physiology, Bethesda$gv. 103, n. 1, p. 149-156, 1993.
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Embrapa Soja (CNPSO) |
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| Registros recuperados : 14 | |
| 2. |  | PÍPOLO, A. E.; SINCLAIR, T. R.; CÂMARA, G. M. S. Effect of temperature on protein and oil concentrations in soybean (Glycine max (L.) Merr.) in field conditions. In: WORLD SOYBEAN RESEARCH CONFERENCE, 7.; INTERNATIONAL SOYBEAN PROCESSING AND UTILIZATION CONFERENCE, 4.; CONGRESSO BRASILEIRO DE SOJA, 3., 2004, Foz do Iguassu. Abstracts of contributed papers and posters. Londrina: Embrapa Soybean, 2004. p. 327. (Embrapa Soja. Documentos, 228). Editado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi.| Biblioteca(s): Embrapa Soja. |
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| 8. | | FARIAS, J. R. B.; NEUMAIER, N.; SINCLAIR, T. R.; NEPOMUCENO, A. L. Respostas de cultivares de soja ao termofotoperíodo. In: REUNIÃO DE PESQUISA DE SOJA DA REGIÃO CENTRAL DO BRASIL, 27., 2005. Cornélio Procópio. Resumos... Londrina: Embrapa Soja, 2005. p. 84-85. (Embrapa Soja. Documentos, 257). Organizado por Odilon Ferreira Saraiva, Janete Lasso Ortiz, Simone Ery Grosskopf.| Biblioteca(s): Embrapa Soja. |
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| 9. | | PRADHAN, D.; BERTIN, D.; SINCLAIR, T. R.; NOGUEIRA, M. A.; LIVINGSTON, D.; CARTER, T. Microsphere stem blockage as a screen for nitrogen-fixation drought tolerance in soybean. Physiologia Plantarum, v. 172, n. 2, p. 1376-1381, 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Soja. |
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| 13. | | FARIAS, J. R. B.; NEPOMUCENO, A. L.; NEUMAIER, N.; SINCLAIR, T. R.; ZOTARELLI, L.; OYA, T.; ALMEIDA, I. R. de. Modelos de simulação do desenvolvimento da cultura da soja em resposta às variáveis do ambiente (04.2000.331-06). In: HOFFMANN-CAMPO, C. B.; SARAIVA, O. F. (Org.). Resultados de pesquisa da Embrapa Soja - 2002: ecofisiologia e biologia molecular. Londrina: Embrapa Soja, 2003. p. 81-85. (Embrapa Soja. Documentos, 217).| Biblioteca(s): Embrapa Soja. |
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| 14. | | FARIAS, J. R. B.; SINCLAIR, T. R.; NEPOMUCENO, A. L.; NEUMAIER, N.; OYA, T.; ALMEIDA, I. R. de. Modelos de simulação do desenvolvimento da cultura da soja em resposta às variáveis do ambiente. In: HOFFMANN-CAMPO, C. B.; SARAIVA, O. F. (Org.). Resultados de pesquisa da Embrapa Soja - 2001: ecofisiologia e biologia molecular. Londrina: Embrapa Soja, 2002. p. 24-27. (Embrapa Soja. Documentos, 198).| Biblioteca(s): Embrapa Soja. |
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| Registros recuperados : 14 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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