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| 3. |  | BODDEY, L. H.; HUNGRIA, M. Classificacao das estirpes de soja utilizadas em estudos e/ou inoculantes brasileiros nas especies Bradyrhizobium japonicum e Bradyrhizobium elkanii. In: SIMPOSIO BRASILEIRO SOBRE MICROBIOLOGIA DO SOLO, 3.; REUNIAO DE LABORATORIOS PARA RECOMENDACAO DE ESTIRPES DE RHIZOBIUM E BRADYRHIZOBIUM, 6., 1994, Londrina. Microbiologia do solo: desafios para o seculo XXI - anais. Londrina: IAPAR/EMBRAPA-CNPSo, 1995. p.332-339. Editado por Mariangela Hungria, Elcio Liborio Balota, Arnaldo Colozzi Filho, Diva de S. Andrade.| Biblioteca(s): Embrapa Soja. |
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| 4. | | BODDEY, L. H.; HUNGRIA, M. Classificacao das estirpes de soja utilizadas em estudos e/ou inoculantes brasileiros nas especies Bradyrhizobium japonicum e Bradyrhizobium elkanii. In: SIMPOSIO BRASILEIRO SOBRE MICROBIOLOGIA DO SOLO, 3.; REUNIAO DE LABORATORIOS PARA RECOMENDACAO DE ESTIRPES DE RHIZOBIUM E BRADYRHIZOBIUM, 6., 1994, Londrina. Microbiologia do solo: desafios para o seculo XXI - anais. Londrina: IAPAR/EMBRAPA-CNPSo, 1995. p.332-339. Editado por Mariangela Hungria, Elcio Liborio Balota, Arnaldo Colozzi Filho, Diva de S. Andrade.| Biblioteca(s): Embrapa Agrobiologia. |
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| 13. | | BODDEY, L. H.; BARRADAS, C. A. A.; HUNGRIA, M. Selecao de cultivares de feijao e estirpes de Rhizobium para nodulacao precoce, senescencia tardia e maior eficiencia de fixacao do N2. In: CONGRESSO E FEIRA NACIONAL DE BIOTECNOLOGIA, 1, Rio de Janeiro. Programa e resumos... Rio de Janeiro, Associacao Brasileira das Empresas de Biotecnologia, 1988. n.p., v., p.-, 1988.| Biblioteca(s): Embrapa Agrobiologia. |
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| 19. | | HUNGRIA, M.; VARGAS, M. A. T.; BODDEY, L. H.; SANTOS, M. A. Characterization of soybean Bradyrhizobia strains adapted to the Brazilian savannas. In: INTERNATIONAL CONGRESS ON NITROGEN FIXATION, 12., 1999, Foz do Iguacu. Nitrogen fixation: from molecules to crop productivity - proceedings. Dordrechet: Kluwer, 2000. p.194. (Current Plant Science and Biotechnology in Agriculture, v.38). Editado por Fabio O. Pedrosa, Mariangela Hungria, Geoffrey Yates, William E. Newton.| Biblioteca(s): Embrapa Cerrados. |
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| 20. | | HUNGRIA, M.; VARGAS, M. A. T.; BODDEY, L. H.; SANTOS, M. A. Characterization of soybean bradyrhizobia strains adapted to the Brazilian savannas. In: INTERNATIONAL CONGRESS ON NITROGEN FIXATION, 12., 1999, Foz do Iguacu. Nitrogen fixation: from molecules to crop productivity: proceedings. Dordrechet: Kluwer, 2000. p. 194. (Current Plant Science and Biotechnology in Agriculture, 38). Editado por Fabio O. Pedrosa, Mariangela Hungria, Geoffrey Yates, William E. Newton.| Biblioteca(s): Embrapa Soja. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
30/03/1999 |
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Data da última atualização: |
30/03/1999 |
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Autoria: |
HUNGRIA, M.; BODDEY, L. H.; SANTOS, M. A.; VARGAS, M. A. T. |
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Título: |
Nitrogen fixation capacity and nodule ocupancy by Bradyrhizobium japonicum and B. elkanii strains. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Biology and Fertility of Soils, Berlin, v.27, p.393-399, 1998. |
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Idioma: |
Inglês |
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Conteúdo: |
In a previous study soybeans Bradyrhizobium strains, used in Brazilian studies and inoculants over the last 30 years, and strains adapted to the Brazilian Cerrados, a region frequently submitted to environmental and nutritional stress, were analyzed for 32 morphological and physiological parameters in vivo and in vitro. A cluster analysis allowed the subdivision of these strains into species Bradyrhizobium japonicum, Bradyrhizobium elkanii and a mixed genotype. In this study, the bacteria were analyzed fore nodulation. N2 fixation capacity nodule occupancy and the ability to increase yield. The goal was to find a relationship between the strain groups and the symbiotic performance. Two strains of Brazilian B. japonicum showed highet rates of N2 fixation and nodule efficiency (mg of N mg of nodules) under axenic conditions. These strains also showed greater yield increases in field experiments when compared to B. elkanii strains. However no differences were detected between B japonicum and B. elkanii strains when comparing nodule occupancy capacity. The adapted strains belonging to the serogroup B. elkanii SEMIA 566, most clustered in a mixed genotype were more competitive than the parental strain and some showed a higher capacity of N2 fixation. Some of the adapted strains, such as S-370 and S-372, have shown similar N2 fixation ratews and nodulation competitiveness to two Brazilian strains of B. japonicum. This similarity the possibility of enchancing N2 fixing ability, after local adaptation, even within B. elkanii species. Differences in the DNA profiles were also detected between the parental SEMIA 566 and adapted strains by analyses with the ERIC and REP-PCR techniques. Consequently, genetic, morphological and physiological changes can be a result of adaptation of rhizobia to the soil. This variability can be use to select strains capable of increasing the contribution of N2 fixation to soybeans nutrition. MenosIn a previous study soybeans Bradyrhizobium strains, used in Brazilian studies and inoculants over the last 30 years, and strains adapted to the Brazilian Cerrados, a region frequently submitted to environmental and nutritional stress, were analyzed for 32 morphological and physiological parameters in vivo and in vitro. A cluster analysis allowed the subdivision of these strains into species Bradyrhizobium japonicum, Bradyrhizobium elkanii and a mixed genotype. In this study, the bacteria were analyzed fore nodulation. N2 fixation capacity nodule occupancy and the ability to increase yield. The goal was to find a relationship between the strain groups and the symbiotic performance. Two strains of Brazilian B. japonicum showed highet rates of N2 fixation and nodule efficiency (mg of N mg of nodules) under axenic conditions. These strains also showed greater yield increases in field experiments when compared to B. elkanii strains. However no differences were detected between B japonicum and B. elkanii strains when comparing nodule occupancy capacity. The adapted strains belonging to the serogroup B. elkanii SEMIA 566, most clustered in a mixed genotype were more competitive than the parental strain and some showed a higher capacity of N2 fixation. Some of the adapted strains, such as S-370 and S-372, have shown similar N2 fixation ratews and nodulation competitiveness to two Brazilian strains of B. japonicum. This similarity the possibility of enchancing N2 fixing ability, aft... Mostrar Tudo |
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Thesagro: |
Bradyrhizobium Japonicum; Cerrado; Fixação de Nitrogênio; Glycine Max; Soja. |
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Thesaurus NAL: |
Bradyrhizobium elkanii; nitrogen fixation; soybeans. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02672naa a2200253 a 4500
001 1554775
005 1999-03-30
008 1998 bl --- 0-- u #d
100 1 $aHUNGRIA, M.
245 $aNitrogen fixation capacity and nodule ocupancy by Bradyrhizobium japonicum and B. elkanii strains.
260 $c1998
520 $aIn a previous study soybeans Bradyrhizobium strains, used in Brazilian studies and inoculants over the last 30 years, and strains adapted to the Brazilian Cerrados, a region frequently submitted to environmental and nutritional stress, were analyzed for 32 morphological and physiological parameters in vivo and in vitro. A cluster analysis allowed the subdivision of these strains into species Bradyrhizobium japonicum, Bradyrhizobium elkanii and a mixed genotype. In this study, the bacteria were analyzed fore nodulation. N2 fixation capacity nodule occupancy and the ability to increase yield. The goal was to find a relationship between the strain groups and the symbiotic performance. Two strains of Brazilian B. japonicum showed highet rates of N2 fixation and nodule efficiency (mg of N mg of nodules) under axenic conditions. These strains also showed greater yield increases in field experiments when compared to B. elkanii strains. However no differences were detected between B japonicum and B. elkanii strains when comparing nodule occupancy capacity. The adapted strains belonging to the serogroup B. elkanii SEMIA 566, most clustered in a mixed genotype were more competitive than the parental strain and some showed a higher capacity of N2 fixation. Some of the adapted strains, such as S-370 and S-372, have shown similar N2 fixation ratews and nodulation competitiveness to two Brazilian strains of B. japonicum. This similarity the possibility of enchancing N2 fixing ability, after local adaptation, even within B. elkanii species. Differences in the DNA profiles were also detected between the parental SEMIA 566 and adapted strains by analyses with the ERIC and REP-PCR techniques. Consequently, genetic, morphological and physiological changes can be a result of adaptation of rhizobia to the soil. This variability can be use to select strains capable of increasing the contribution of N2 fixation to soybeans nutrition.
650 $aBradyrhizobium elkanii
650 $anitrogen fixation
650 $asoybeans
650 $aBradyrhizobium Japonicum
650 $aCerrado
650 $aFixação de Nitrogênio
650 $aGlycine Max
650 $aSoja
700 1 $aBODDEY, L. H.
700 1 $aSANTOS, M. A.
700 1 $aVARGAS, M. A. T.
773 $tBiology and Fertility of Soils, Berlin$gv.27, p.393-399, 1998.
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