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| Registros recuperados : 609 | |
| Registros recuperados : 609 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
03/02/2006 |
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Data da última atualização: |
27/10/2009 |
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Autoria: |
REIS JÚNIOR, F. B. dos; TEIXEIRA, K. R. dos S.; REIS, V. M. |
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Título: |
Análises de restrição do DNA Ribossomal Amplificado (ARDRA) em estudos de diversidade intra-específica de Azospirillum amazonense isolado de diferentes espécies de brachiaria. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Planaltina, DF: Embrapa Cerrados, 2004. |
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Páginas: |
41 p. |
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Série: |
(Embrapa Cerrados. Documentos, 117). |
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Idioma: |
Português |
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Conteúdo: |
ABSTRACT: The limitation of nitrogen is considered one of the most important factors for the Brazilian pastures degradation. However there are evidences that pastures formed by some species of Brachiaria could be benefited by the biological nitrogen fixation (BNF) guaranteeing a higer longevity to these pastures. Previus studies showed that the diazotrophic bacteria found inassociation with Brachiaria were mainly from the Azospirillum amazonense specie. Since associations between these microorganisms and plants are generally conditioned by the vegetation, it is possible that different Brachiaria genotypes can exercise a selective effect on the Azospirillum populations. The aim of this work was to study the intra-specific diversity of A. amazonense isolates and to establish possible influences of different Brachiaria species and edaphoclimatic conditions. The characterisation of the diversity among these isolates was conducted using restriction analysis of different portions of the rDNA. This methodology was capable to show important information regarding the diversity among the studied isolates of A. amazonense, showing possible effects of the environment and Brachiaria species. |
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Palavras-Chave: |
Diazotropic bacteria; Feed grasses. |
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Thesagro: |
Bactéria; Capim Brachiaria; Fixação de Nitrogênio; Gramínea Forrageira; Microbiologia do Solo; Solo. |
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Thesaurus NAL: |
Azospirillum amazonense; microbial ecology; microbiology; nitrogen fixation; pastures; soil. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPAC-2009/26773/1/doc_117.pdf
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Marc: |
LEADER 02215nam a2200325 a 4500
001 1569406
005 2009-10-27
008 2004 bl uuuu u0uu1 u #d
100 1 $aREIS JÚNIOR, F. B. dos
245 $aAnálises de restrição do DNA Ribossomal Amplificado (ARDRA) em estudos de diversidade intra-específica de Azospirillum amazonense isolado de diferentes espécies de brachiaria.
260 $aPlanaltina, DF: Embrapa Cerrados$c2004
300 $a41 p.
490 $a(Embrapa Cerrados. Documentos, 117).
520 $aABSTRACT: The limitation of nitrogen is considered one of the most important factors for the Brazilian pastures degradation. However there are evidences that pastures formed by some species of Brachiaria could be benefited by the biological nitrogen fixation (BNF) guaranteeing a higer longevity to these pastures. Previus studies showed that the diazotrophic bacteria found inassociation with Brachiaria were mainly from the Azospirillum amazonense specie. Since associations between these microorganisms and plants are generally conditioned by the vegetation, it is possible that different Brachiaria genotypes can exercise a selective effect on the Azospirillum populations. The aim of this work was to study the intra-specific diversity of A. amazonense isolates and to establish possible influences of different Brachiaria species and edaphoclimatic conditions. The characterisation of the diversity among these isolates was conducted using restriction analysis of different portions of the rDNA. This methodology was capable to show important information regarding the diversity among the studied isolates of A. amazonense, showing possible effects of the environment and Brachiaria species.
650 $aAzospirillum amazonense
650 $amicrobial ecology
650 $amicrobiology
650 $anitrogen fixation
650 $apastures
650 $asoil
650 $aBactéria
650 $aCapim Brachiaria
650 $aFixação de Nitrogênio
650 $aGramínea Forrageira
650 $aMicrobiologia do Solo
650 $aSolo
653 $aDiazotropic bacteria
653 $aFeed grasses
700 1 $aTEIXEIRA, K. R. dos S.
700 1 $aREIS, V. M.
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