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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
05/11/2013 |
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Data da última atualização: |
02/03/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RACHID, C. T. C. C.; BALIEIRO, F. de C.; PEIXOTO, R. S.; PINHEIRO, Y, A. S.; PICOLLO, M. C.; CHAER, G. M. |
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Afiliação: |
FABIANO DE CARVALHO BALIEIRO, CNPS; GUILHERME MONTANDON CHAER, CNPAB. |
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Título: |
Mixed plantations can promote microbial integration and soil nitrate increases with changes in the N cycling genes. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Soil Biology & Biochemistry, v. 66, p. 146-153, 2013. |
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Idioma: |
Português |
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Conteúdo: |
Mixed-species plantations of Eucalyptus and legume trees can symbiotically fix nitrogen and potentially improve the soil quality and biomass productivity compared with a conventional Eucalyptus monoculture. In this study, we evaluated changes in the structure and abundance of different microbial groups and nitrogen cycle genes in mixed and pure plantations of Acacia mangium and Eucalyptus urograndis in an experimental area in southeastern Brazil. Soil samples (0e10 cm) collected in two- and three-year-old stands were submitted to chemical characterization and molecular analyses using DGGE and real time- PCR for bacteria (16S rRNA), fungi (ITS), and genes involved in nitrogen cycling (nirK, amoA, nifH). The mixed plantation did not significantly change general soil fertility or total soil C and N content compared with the Eucalyptus monoculture. However, there was a significant increase in available phosphorus and soil nitrate content in both the A. mangium and mixed-species treatments. The multivariate ordination of the DGGE profiles of bacteria, fungi and archaea groups showed distinct community structures in each treatment. Significant differences in the abundance of copies of the target genes were found for fungi, with higher values in the Eucalyptus followed by the mixed and A. mangium plantations. The analysis of nitrogen cycle genes showed no clear difference in the communities of nitrogen fixing bacteria or nitrifying archaea among treatments. The nitrification activity was dominated by archaea because it was not possible to detect the presence of bacterial nitrifiers; the denitrifier community had a distinct profile in the Eucalyptus monoculture. The abundance of archaeal amoA and nirK genes suggests that the A. mangium treatment had higher nitrification and lower denitrification than the other treatments, which would explain the higher soil nitrate levels found in pure A. mangium treatments. Our data suggest that mixed plantations of E. urograndis and A. mangium result in a distinct microbial community relative to the respective monocultures with positive effects on soil phosphorus and nitrate content, which potentially reduces the need for anthropogenic fertilization. MenosMixed-species plantations of Eucalyptus and legume trees can symbiotically fix nitrogen and potentially improve the soil quality and biomass productivity compared with a conventional Eucalyptus monoculture. In this study, we evaluated changes in the structure and abundance of different microbial groups and nitrogen cycle genes in mixed and pure plantations of Acacia mangium and Eucalyptus urograndis in an experimental area in southeastern Brazil. Soil samples (0e10 cm) collected in two- and three-year-old stands were submitted to chemical characterization and molecular analyses using DGGE and real time- PCR for bacteria (16S rRNA), fungi (ITS), and genes involved in nitrogen cycling (nirK, amoA, nifH). The mixed plantation did not significantly change general soil fertility or total soil C and N content compared with the Eucalyptus monoculture. However, there was a significant increase in available phosphorus and soil nitrate content in both the A. mangium and mixed-species treatments. The multivariate ordination of the DGGE profiles of bacteria, fungi and archaea groups showed distinct community structures in each treatment. Significant differences in the abundance of copies of the target genes were found for fungi, with higher values in the Eucalyptus followed by the mixed and A. mangium plantations. The analysis of nitrogen cycle genes showed no clear difference in the communities of nitrogen fixing bacteria or nitrifying archaea among treatments. The nitrification activi... Mostrar Tudo |
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Palavras-Chave: |
Forest microbiology; Microbial diversity; Mixed plantation; N cycling genes. |
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Thesaurus Nal: |
Acacia mangium; Eucalyptus. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02970naa a2200253 a 4500
001 1970359
005 2015-03-02
008 2013 bl uuuu u00u1 u #d
100 1 $aRACHID, C. T. C. C.
245 $aMixed plantations can promote microbial integration and soil nitrate increases with changes in the N cycling genes.
260 $c2013
520 $aMixed-species plantations of Eucalyptus and legume trees can symbiotically fix nitrogen and potentially improve the soil quality and biomass productivity compared with a conventional Eucalyptus monoculture. In this study, we evaluated changes in the structure and abundance of different microbial groups and nitrogen cycle genes in mixed and pure plantations of Acacia mangium and Eucalyptus urograndis in an experimental area in southeastern Brazil. Soil samples (0e10 cm) collected in two- and three-year-old stands were submitted to chemical characterization and molecular analyses using DGGE and real time- PCR for bacteria (16S rRNA), fungi (ITS), and genes involved in nitrogen cycling (nirK, amoA, nifH). The mixed plantation did not significantly change general soil fertility or total soil C and N content compared with the Eucalyptus monoculture. However, there was a significant increase in available phosphorus and soil nitrate content in both the A. mangium and mixed-species treatments. The multivariate ordination of the DGGE profiles of bacteria, fungi and archaea groups showed distinct community structures in each treatment. Significant differences in the abundance of copies of the target genes were found for fungi, with higher values in the Eucalyptus followed by the mixed and A. mangium plantations. The analysis of nitrogen cycle genes showed no clear difference in the communities of nitrogen fixing bacteria or nitrifying archaea among treatments. The nitrification activity was dominated by archaea because it was not possible to detect the presence of bacterial nitrifiers; the denitrifier community had a distinct profile in the Eucalyptus monoculture. The abundance of archaeal amoA and nirK genes suggests that the A. mangium treatment had higher nitrification and lower denitrification than the other treatments, which would explain the higher soil nitrate levels found in pure A. mangium treatments. Our data suggest that mixed plantations of E. urograndis and A. mangium result in a distinct microbial community relative to the respective monocultures with positive effects on soil phosphorus and nitrate content, which potentially reduces the need for anthropogenic fertilization.
650 $aAcacia mangium
650 $aEucalyptus
653 $aForest microbiology
653 $aMicrobial diversity
653 $aMixed plantation
653 $aN cycling genes
700 1 $aBALIEIRO, F. de C.
700 1 $aPEIXOTO, R. S.
700 1 $aPINHEIRO, Y, A. S.
700 1 $aPICOLLO, M. C.
700 1 $aCHAER, G. M.
773 $tSoil Biology & Biochemistry$gv. 66, p. 146-153, 2013.
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Embrapa Agrobiologia (CNPAB) |
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| 9. |  | ARAÚJO, A. P.; COSTA, O. A. D.; ROÇA, R. O.; GUIDONI, A. L.; ATHAYDE, N. B.; CIOCCA, J. R. P. Condições do transporte e desembarque de suínos na região sul do Brasil. In: FÓRUM INTERNACIONAL DE SUINOCULTURA, 5., 2010, Curitiba. Anais. Curitiba: Animalword, 2010. p. 525-526. 1 CD-Rom. Pork Expo. Projeto/Plano de Ação: 02.06.10.100-01| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Suínos e Aves. |
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| 13. | | ATHAYDE, N. B.; DALLA COSTA, O. A.; ROÇA, R. de O; GUIDONI, A. L.; JOAQUIM, S. F.; HOMEM, J. M. Influência do uso de ractopamina na dieta de suínos em terminação sobre a concentração de lactato e cortisol sanguíneos. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 48., 2011, Belém. Anais... Belém: UFRA, 2011. 1 CD-ROM. Projeto: 02.06.01.001.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Suínos e Aves. |
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| 15. | | ARAÚJO, A. P.; DALLA COSTA, O. A.; ROÇA, R. O.; GUIDONI, A. L.; ATHAYDE, N. B.; CIOCCA, J. R. Incidência de carnes PSE e DFD em suínos abatidos em frigoríficos da região sul do Brasil. In: FÓRUM INTERNACIONAL DE SUINOCULTURA, 5., 2010, Curitiba. Anais. Curitiba: Animalword, 2010. p. 528-529. 1 CD-Rom. Pork Expo. Projeto/Plano de Ação: 02.06.10.100-04.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Suínos e Aves. |
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| 18. | | DALLA COSTA, O. A.; ATHAYDE, N. B.; ROÇA, R. de O.; GUIDONI, A. L.; LIMA, G. J. M. M. de; LORENZETTI, A. M. Desempenho dos suínos de diferentes categorias de castração suplementados com ractopamina. In: SEMINÁRIO INTERNACIONAL DE AVES E SUÍNOS, 15.; SEMINÁRIO TÉCNICO CIENTÍFICO DE AVES E SUÍNOS; FEIRA DA INDÚSTRIA LATINO-AMERICANA DE AVES E SUÍNOS, 2014, Florianópolis. Anais... Florianópolis: Gessulli, 2014. AVESUI 2014.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Suínos e Aves. |
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| 19. | | DALLA COSTA, O. A.; ARAÙJO, A. P. de; CIOCCA, J. R. P.; ATHAYDE, N. B. LUDTKE, C. B.; SCHEUERMANN, G. N.; COSTA, M. J. R. P. Avaliação do bem-estar durante o manejo pré-abate de suínos na região oeste de Santa Catarina. In: CONGRESSO INTERNACIONAL DE CONCEITOS EM BEM-ESTAR ANIMAL, 2., 2007, Rio de Janeiro. Anais... Rio de Janeiro: WSPA, 2007. p. 73-74 Projeto n. 02.06.10.100-04.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Suínos e Aves. |
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| 20. | | DALLA COSTA, O. A.; ARAÚJO, A. P. de; CIOCCA, J. R.; ATHAYDE, N. B.; COSTA, M. J. R. P. da; KLEIN, E. L.; LUDTKE, C.; BAGGIO, E. E. Avaliação das condições de transporte, desembarque e ocorrência de quedas dos suínos na perspectiva do bem-estar animal. Concórdia: Embrapa Suínos e Aves, 2007. 5 p. (Embrapa Suínos e Aves. Comunicado Técnico, 459). Projeto n. 02.06.10.100-03.| Tipo: Comunicado Técnico/Recomendações Técnicas |
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| Registros recuperados : 55 | |
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