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Registro Completo |
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Biblioteca(s): |
Embrapa Agropecuária Oeste; Embrapa Soja. |
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Data corrente: |
04/10/2007 |
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Data da última atualização: |
25/11/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PINTO, F. G. S.; HUNGRIA, M.; MERCANTE, F. M. |
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Afiliação: |
Fabiana Gisele Silva Pinto, Universidade Estadual de Londrina; Mariângela Hungria, Embrapa Soja; Fábio Martins Mercante, Embrapa Agropecuária Oeste. |
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Título: |
Polyphasic characterization of brazilian Rhizobium tropici strains effective in fixing N2 with common bean (Phaseolus vulgaris L.). |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Soil Biology & Biochemistry, v. 39, n. 8, p. 1851-1864, Aug. 2007. |
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DOI: |
10.1016/J.SOIBIO20007.01.001 |
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Idioma: |
Inglês |
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Conteúdo: |
Common bean (Phaseolus vulgaris) is native to the Americas, and Rhizobium etli is the dominant microsymbiont in both the Mesoamerican and the Andean centers of genetic diversification. Wild common beans are not found in Brazil, although the legume has been cropped in the country throughout time and all but one of the rhizobial species that nodulate it (Rhizobium gallicum) have been broadly detected in Brazilian soils. However, the majority of the effective rhizobial strains isolated so far from field-grown plants belong to R. tropici. This study describes the analysis of symbiotic and non-symbiotic genes of 15 effective R. tropici strains, isolated from four geographically distant regions in Brazil. With RFLP-PCR of the 16S and 23S rRNA genes and sequence analysis of 16S rRNA, two clusters were observed, one related to R. tropici type A and another to type B strains. Diversity in ribosomal genes was high, indicating that type A strains might represent a new species. High intraspecies diversity was also observed in the rep-PCR analysis with BOX, ERIC and REP primers. However, in the RFLP-PCR analysis of nifH and nodC genes, all R. tropici showed unique combinations of profiles, which might reflect an evolutionary strategy to maximize N2 fixation. |
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Palavras-Chave: |
Fixação biológica. |
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Thesagro: |
Feijão; Fixação de Nitrogênio; Nitrogênio. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/48045/1/01.pdf
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Marc: |
LEADER 01928naa a2200205 a 4500
001 1254697
005 2011-11-25
008 2007 bl uuuu u00u1 u #d
024 7 $a10.1016/J.SOIBIO20007.01.001$2DOI
100 1 $aPINTO, F. G. S.
245 $aPolyphasic characterization of brazilian Rhizobium tropici strains effective in fixing N2 with common bean (Phaseolus vulgaris L.).
260 $c2007
520 $aCommon bean (Phaseolus vulgaris) is native to the Americas, and Rhizobium etli is the dominant microsymbiont in both the Mesoamerican and the Andean centers of genetic diversification. Wild common beans are not found in Brazil, although the legume has been cropped in the country throughout time and all but one of the rhizobial species that nodulate it (Rhizobium gallicum) have been broadly detected in Brazilian soils. However, the majority of the effective rhizobial strains isolated so far from field-grown plants belong to R. tropici. This study describes the analysis of symbiotic and non-symbiotic genes of 15 effective R. tropici strains, isolated from four geographically distant regions in Brazil. With RFLP-PCR of the 16S and 23S rRNA genes and sequence analysis of 16S rRNA, two clusters were observed, one related to R. tropici type A and another to type B strains. Diversity in ribosomal genes was high, indicating that type A strains might represent a new species. High intraspecies diversity was also observed in the rep-PCR analysis with BOX, ERIC and REP primers. However, in the RFLP-PCR analysis of nifH and nodC genes, all R. tropici showed unique combinations of profiles, which might reflect an evolutionary strategy to maximize N2 fixation.
650 $aFeijão
650 $aFixação de Nitrogênio
650 $aNitrogênio
653 $aFixação biológica
700 1 $aHUNGRIA, M.
700 1 $aMERCANTE, F. M.
773 $tSoil Biology & Biochemistry$gv. 39, n. 8, p. 1851-1864, Aug. 2007.
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Registro original: |
Embrapa Agropecuária Oeste (CPAO) |
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| 4. |  | BENDAHAN, A. B.; MOURÃO JUNIOR, M.; MATTOS, P. S.; MEDEIROS, R. D. de; FERREIRA, G. B. Adaptabilidade e monitoramento de genótipos de cana-de-açúcar em solo de cerrado do estado de Roraima. In: SIMPÓSIO BRASILEIRO DE ECOFISIOLOGIA, MATURAÇÃO E MATURADORES EM CANA-DE-AÇÚCAR, 1., 2008, Botucatu. Anais... Botucatu: UNESP, 2008.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Roraima. |
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| 8. | | BENDAHAN, A. B.; MATTOS, P. S. R.; MEDEIROS, R. D.; FERREIRA, G. B.; COSTA, N. L. Avaliação de dois clones de Cana-de-Açúcar em Savana em Roraima. In: ENCONTRO DE PESQUISA E INICIAÇÃO CIENTÍFICA, 7, 2008, Boa Vista, Roraima. Anais.... Boa Vista, Roraima : UFRR, 2008.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Roraima. |
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| Registros recuperados : 94 | |
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