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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura; Embrapa Tabuleiros Costeiros. |
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Data corrente: |
24/05/1993 |
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Data da última atualização: |
26/08/1998 |
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Autoria: |
BERGE, O.; HEULIN, T.; BALANDREAU, J. |
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Título: |
Diversity of diazotroph populations in the rhizosphere of maize (Zea mays L.) growing on different french soils. |
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Ano de publicação: |
1991 |
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Fonte/Imprenta: |
Biology and Fertility of Soils, v.11, p.210-215, 1991. |
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Idioma: |
Inglês |
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Conteúdo: |
We studied the dominant diazotrophs associated with maize roots and rhizosphere soil originating from three different locations in France. An aseptically grown maize plantlet, the "spermosphere model", was used to isolate N2-fixing (acetylene-reducing) bacteria. Bacillus circulans was the dominant N2-fixing bacterium in the rhizosphere of maize-growing soils from Ramonville and Trogny, but was not found in maize-growing sandy soil from Pissos. In The latter soil, Enterobacter cloacae, Klebsiella terrigena, and Pseudomonas sp. were the most abundant diazotrophs. Azospirillum sp., which has been freguently reported as an important diazotroph accociated with the maize rhizosphere, was not isolated from any of these soils. The strains were compared for their acetylene-reducing activity in the spermosphere model. The Bacillus circulans strains, which were more frequently isolated, also exhibited significantly greater acetylene-reducing activity (3100 nmol ethylene day -1 plant -1) than the Enterobacteriaceae strains (180 nmol ethylene day -1 plant -1). This work indicates for the first time that Bacillus circulans is an important maize-rhizosphere-associated bacterium and a potential plant growth-promoting rhizobacterium. |
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Palavras-Chave: |
Diazotroph populations; Diversificacao; Diversity; Fixacao; Maize; Populacao diazotropica. |
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Thesagro: |
Milho; Nitrogênio; Zea Mays. |
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Thesaurus Nal: |
Bacillus circulans; Enterobacteriaceae; nitrogen fixation; rhizosphere. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02068naa a2200301 a 4500
001 1369909
005 1998-08-26
008 1991 bl --- 0-- u #d
100 1 $aBERGE, O.
245 $aDiversity of diazotroph populations in the rhizosphere of maize (Zea mays L.) growing on different french soils.
260 $c1991
520 $aWe studied the dominant diazotrophs associated with maize roots and rhizosphere soil originating from three different locations in France. An aseptically grown maize plantlet, the "spermosphere model", was used to isolate N2-fixing (acetylene-reducing) bacteria. Bacillus circulans was the dominant N2-fixing bacterium in the rhizosphere of maize-growing soils from Ramonville and Trogny, but was not found in maize-growing sandy soil from Pissos. In The latter soil, Enterobacter cloacae, Klebsiella terrigena, and Pseudomonas sp. were the most abundant diazotrophs. Azospirillum sp., which has been freguently reported as an important diazotroph accociated with the maize rhizosphere, was not isolated from any of these soils. The strains were compared for their acetylene-reducing activity in the spermosphere model. The Bacillus circulans strains, which were more frequently isolated, also exhibited significantly greater acetylene-reducing activity (3100 nmol ethylene day -1 plant -1) than the Enterobacteriaceae strains (180 nmol ethylene day -1 plant -1). This work indicates for the first time that Bacillus circulans is an important maize-rhizosphere-associated bacterium and a potential plant growth-promoting rhizobacterium.
650 $aBacillus circulans
650 $aEnterobacteriaceae
650 $anitrogen fixation
650 $arhizosphere
650 $aMilho
650 $aNitrogênio
650 $aZea Mays
653 $aDiazotroph populations
653 $aDiversificacao
653 $aDiversity
653 $aFixacao
653 $aMaize
653 $aPopulacao diazotropica
700 1 $aHEULIN, T.
700 1 $aBALANDREAU, J.
773 $tBiology and Fertility of Soils$gv.11, p.210-215, 1991.
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Registro original: |
Embrapa Tabuleiros Costeiros (CPATC) |
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| 1. |  | REIS, V. M.; SANTOS, P. E. -de los; TENORIO-SALGADO, S.; VOGEL, J.; STOFFELS, M.; GUYON, S.; MAVINGUI, P.; BALDANI, V. L. D.; SCHMID, M.; BALDANI, J. I.; BALANDREAU, J.; HARTMANN, A.; CABALLERO-MELLADO, J. Burkholderia tropica sp. nov., a novel nitrogen-fixing, plant-associated bacterium. International Journal of Systematic and Evolutionary Microbiology, Reading, v. 54, p. 2155-2162, 2004.| Biblioteca(s): Embrapa Agrobiologia. |
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