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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
28/09/2007 |
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Data da última atualização: |
26/07/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LOUREIRO, M. de F.; KASCHUK, G.; ALBERTON, O.; HUNGRIA, M. |
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Afiliação: |
MARIA DE FÁTIMA LOUREIRO, Faculdade de Agronomia e Medicina Veterinária/Universidade Federal do Mato Grosso; GLACIELA KASCHUK, Plant Production Systems Group; ODAIR ALBERTON, Department of Soil Quality; MARIANGELA HUNGRIA DA CUNHA, CNPSO. |
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Título: |
Soybean [Glycine max (L.) Merrill] rhizobial diversity in Brazilian oxisols under various soil, cropping, and inoculation managements. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Biology and Fertility of Soils, Berlin, v. 43, n. 6. p. 665-674, Aug. 2007. |
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ISSN: |
0178-2762 |
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DOI: |
10.1007/s00374-006-0146-x |
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Idioma: |
Inglês |
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Conteúdo: |
In this study, soybean nodules were collected from 12 sites in the State of Mato Grosso, in the Brazilian Cerrados, where both exotic soybean [Glycine max (L.) Merrill] and bradyrhizobial strains have been introduced from 1 to 18 years before. All soils were originally devoid of rhizobia capable of effectively nodulating soybean and varied in terms of chemical and physical properties, inoculation procedures, and cropping systems. Rhizobial genetic diversity was assessed on 240 isolates by rep-PCR fingerprinting with BOX primer, and indices of diversity (abundance-based coverage estimator and traditional and modified Shannon indices) were applied to the profiles obtained. The genetic diversity was much greater than expected, as after the introduction of a maximum of four strains, up to 13 profiles were identified, some sharing many similar bands with the inoculant strains, but others quite distinct from the putative parental genotypes. The increase in the number of rep-PCR profiles could be attributed to genetic variability due to the stressful tropical environmental conditions, but also might indicate that indigenous rhizobia become capable of nodulating the host legume. After the third year of cropping with the host legume, inoculation did not affect rhizobial diversity. A high content of clay decreased diversity in comparison with that seen in a sandy soil, probably due to reduced aeration. Diversity was higher under the no-tillage system when compared to the conventional tillage management, highlighting the importance of maintaining crop residues in tropical soils. Understanding the ecology of exotic rhizobia after being introduced into new cropping areas represents a first step towards the establishment of better strategies of inoculation, which in turn may result in sustainability and higher plant yields. MenosIn this study, soybean nodules were collected from 12 sites in the State of Mato Grosso, in the Brazilian Cerrados, where both exotic soybean [Glycine max (L.) Merrill] and bradyrhizobial strains have been introduced from 1 to 18 years before. All soils were originally devoid of rhizobia capable of effectively nodulating soybean and varied in terms of chemical and physical properties, inoculation procedures, and cropping systems. Rhizobial genetic diversity was assessed on 240 isolates by rep-PCR fingerprinting with BOX primer, and indices of diversity (abundance-based coverage estimator and traditional and modified Shannon indices) were applied to the profiles obtained. The genetic diversity was much greater than expected, as after the introduction of a maximum of four strains, up to 13 profiles were identified, some sharing many similar bands with the inoculant strains, but others quite distinct from the putative parental genotypes. The increase in the number of rep-PCR profiles could be attributed to genetic variability due to the stressful tropical environmental conditions, but also might indicate that indigenous rhizobia become capable of nodulating the host legume. After the third year of cropping with the host legume, inoculation did not affect rhizobial diversity. A high content of clay decreased diversity in comparison with that seen in a sandy soil, probably due to reduced aeration. Diversity was higher under the no-tillage system when compared to the conventional ... Mostrar Tudo |
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Thesagro: |
Soja. |
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Categoria do assunto: |
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Marc: |
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024 7 $a10.1007/s00374-006-0146-x$2DOI
100 1 $aLOUREIRO, M. de F.
245 $aSoybean [Glycine max (L.) Merrill] rhizobial diversity in Brazilian oxisols under various soil, cropping, and inoculation managements.
260 $c2007
520 $aIn this study, soybean nodules were collected from 12 sites in the State of Mato Grosso, in the Brazilian Cerrados, where both exotic soybean [Glycine max (L.) Merrill] and bradyrhizobial strains have been introduced from 1 to 18 years before. All soils were originally devoid of rhizobia capable of effectively nodulating soybean and varied in terms of chemical and physical properties, inoculation procedures, and cropping systems. Rhizobial genetic diversity was assessed on 240 isolates by rep-PCR fingerprinting with BOX primer, and indices of diversity (abundance-based coverage estimator and traditional and modified Shannon indices) were applied to the profiles obtained. The genetic diversity was much greater than expected, as after the introduction of a maximum of four strains, up to 13 profiles were identified, some sharing many similar bands with the inoculant strains, but others quite distinct from the putative parental genotypes. The increase in the number of rep-PCR profiles could be attributed to genetic variability due to the stressful tropical environmental conditions, but also might indicate that indigenous rhizobia become capable of nodulating the host legume. After the third year of cropping with the host legume, inoculation did not affect rhizobial diversity. A high content of clay decreased diversity in comparison with that seen in a sandy soil, probably due to reduced aeration. Diversity was higher under the no-tillage system when compared to the conventional tillage management, highlighting the importance of maintaining crop residues in tropical soils. Understanding the ecology of exotic rhizobia after being introduced into new cropping areas represents a first step towards the establishment of better strategies of inoculation, which in turn may result in sustainability and higher plant yields.
650 $aSoja
700 1 $aKASCHUK, G.
700 1 $aALBERTON, O.
700 1 $aHUNGRIA, M.
773 $tBiology and Fertility of Soils, Berlin$gv. 43, n. 6. p. 665-674, Aug. 2007.
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Embrapa Soja (CNPSO) |
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| Registros recuperados : 34 | |
| 8. |  | LOUREIRO, M. de F.; KASCHUK, G.; ALBERTON, O.; HUNGRIA, M. Soybean [Glycine max (L.) Merrill] rhizobial diversity in Brazilian oxisols under various soil, cropping, and inoculation managements. Biology and Fertility of Soils, Berlin, v. 43, n. 6. p. 665-674, Aug. 2007.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
| Biblioteca(s): Embrapa Soja. |
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| 12. | | LOUREIRO, M. de F.; KASCHUK, G.; ALBERTON, O.; HUNGRIA, M.; CORREA, F. Diferenças qualitativas na microbiota do solo relacionadas ao manejo do solo e das culturas. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 25.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 9.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 7.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 4., 2002, Rio de Janeiro. Fertbio 2002: agricultura: bases ecológicas para o desenvolvimento social e econômico sustentado. Rio de Janeiro, 2002. p. 172. Guia do congressista e em CD-ROM.| Biblioteca(s): Embrapa Soja. |
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| 14. | | LOUREIRO, M, de F.; MARIANOWSKI, T.; NICOLÁS, M. F.; ELIAS NETO, N.; HUNGRIA, M. Uso de marcadores moleculares para la identificación de especies de Discolobium nativas del Pantanal Matogrosense de Brasil. In: REUNIÓN LATINOAMERICANA DE RHIZOBIOLOGIA, 21.; CONGRESO NACIONAL DE LA FIJACIÓN BIOLÓGICA DE NITRÓGENO, 6., 2002. Cocoyoc. Memorias... [S.l.]: Centro de Investigación sobre Fijación de Nitrógeno; Universidade Nacional Autónoma de México, 2002. p. 91.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 15. | | ELIAS NETO, N.; LOUREIRO, M. de F.; NICOLÁS, M. F.; MARIANOWSKI, T.; TORRES, A. R.; HUNGRIA, M. Identification of Discolobium species indigenous to the Brazilian Pantanal ecosystem by microsatellite (SSRs) markers. Semina, Ciência Agrárias, Londrina, v. 33, Supl. 1, p. 3017-3022, 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Soja. |
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| 16. | | HUNGRIA, M.; CAMPO, R. J.; CHUEIRE, L. M. O.; MENDES, I. C.; FRANCHINI, J. C.; ANDRADE, D. S.; NICOLÁS, M. F.; GRANGE, L.; LOUREIRO, M. de F. Aspectos agronômicos da fixação simbiótica do nitrogênio no Brazil. In: REUNIÓN LATINOAMERICANA DE RHIZOBIOLOGIA, 21.; CONGRESO NACIONAL DE LA FIJACIÓN BIOLÓGICA DE NITRÓGENO, 6., 2002. Cocoyoc. Memorias... [S.l.]: Centro de Investigación sobre Fijación de Nitrógeno; Universidade Nacional Autónoma de México, 2002. p. 53.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 17. | | CRISPINO, C. C.; FRANCHINI, J. C.; MORAES, J. Z.; SIBALDELLE, R. N. R.; LOUREIRO, M. de F.; SANTOS, E. N. dos; CAMPO, R. J.; HUNGRIA, M. Adubação nitrogenada na cultura da soja. Londrina: Embrapa Soja, 2001. 6 p. (Embrapa Soja. Comunicado Técnico, 75).| Biblioteca(s): Embrapa Soja. |
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| 18. | | HUNGRIA, M.; CAMPO, R. J.; CRISPINO, C. C.; FRANCHINI, J. C.; SIBALDELLI, R. N. R.; MORAES, J. Z.; SANTOS, E. N. dos; LOUREIRO, M de F. Identificação de estirpes de Bradyrhizobium japonicum (B. elkanii) mais eficientes e competitivas para a cultura da soja e avaliação de respostas à inoculação (04.2001.338.01). In: HOFFMANN-CAMPO, C .B.; SARAIVA, O. F. (Org.). Resultados de pesquisa da Embrapa Soja - 2001: microbiologia de solos. Londrina: Embrapa Soja, 2002. p. 16-20. (Embrapa Soja. Documentos, 197).| Biblioteca(s): Embrapa Soja. |
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| 19. | | LOUREIRO, M. de F.; HUNGRIA, M.; SILVA NETO, J. L. da; CHUEIRE, L. M. de O.; SAMPAIO, M. J. A.; FRANCO, A. A. Habilidade fotossintética e fixadora de N2 de isolados do caule e das raízes de Aeschynomene fluminensis. In: SIMPÓSIO BRASILEIRO SOBRE MICROBIOLOGIA DO SOLO, 3.; REUNIÃO DE LABORATÓRIOS PARA RECOMENDAÇÃO DE ESTIRPES DE RHIZOBIUM E BRADYRHIZOBIUM, 6., 1994, Londrina. Resumos... Londrina: IAPAR, 1994. Não paginado. Trabalho n. 69.| Biblioteca(s): Embrapa Soja. |
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| 20. | | JAMES, E. K.; LOUREIRO, M. de F.; POTT, A.; POTT, V. J.; MARTINS, C. M.; FRANCO, A. A.; SPRENT, J. I. Flooding-tolerant legume symbioses from the Brazilian Pantanal. New Phytologist, Oxford, v. 150, n. 3, p. 723-738, jun. 2001.| Biblioteca(s): Embrapa Agrobiologia. |
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| Registros recuperados : 34 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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