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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
07/08/2013 |
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Data da última atualização: |
08/11/2021 |
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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.; PICCOLO, M. C.; CHAER, G. M.; ROSADO, A. S. |
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Afiliação: |
UFRJ; FABIANO DE CARVALHO BALIEIRO, CNPS; UFRJ; UFRJ; EMBRAPA AGROBIOLOGIA; UNIVERSIDADE DE SÃO PAULO; A. S. ROSADO, UFRJ. |
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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, Nov. 2013. |
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DOI: |
https://doi.org/10.1016/j.soilbio.2013.07.005 |
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Idioma: |
Inglês |
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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: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 03095naa a2200277 a 4500
001 1963443
005 2021-11-08
008 2013 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.soilbio.2013.07.005$2DOI
100 1 $aRACHID, C. T. C. C.
245 $aMixed plantations can promote microbial integration and soil nitrate increases with changes in the N cycling genes.$h[electronic resource]
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 $aPICCOLO, M. C.
700 1 $aCHAER, G. M.
700 1 $aROSADO, A. S.
773 $tSoil Biology & Biochemistry$gv. 66, p. 146-153, Nov. 2013.
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| 10. |  | MOREIRA, J. M. M. A. P.; TEIXEIRA, L. P.; SOUSA, T. C. R. de. Desempenho agronômico e análise econômica do sistema de produção do maracujá-azedo BRS Gigante Amarelo: estudo de caso para o Distrito Federal. In: CONGRESSO DA SOCIEDADE BRASILEIRA DE SISTEMAS DE PRODUÇÃO, 9., 2012, Luziânia. Ciência, tecnologia e inovação para o desenvolvimento rural sustentável: anais. Brasília, DF: Embrapa; Planaltina, DF: Embrapa Cerrados, 2012. 1 CD-ROM. Editores técnicos José Humberto Valadares Xavier, Marcelo Leite Gastal, Suênia Cibeli Ramos de Almeida (CPAC).| Tipo: Artigo em Anais de Congresso |
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| 12. | | SOUSA, T. R. de; SILVA NETO, S. P. da; PELÁ, A. Desempenho agronômico de dois híbridos de milho safrinha, na presença de Pratylenchus sp., em Ipameri, Goiás. In: SEMINÁRIO NACIONAL DE MILHO SAFRINHA, 12., 2013, Dourados. Estabilidade e produtividade: anais. Brasília, DF: Embrapa, 2013. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
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| 16. | | SOUSA, T. F.; QUEIROZ, C. A. de; SOUSA, S. B. de; SILVA, G. F. da. Diferenciação genética entre as formas homotálicas e heterotálicas de Fusarium decemcellulare por meio de marcadores moleculares. In: OLIVEIRA, L. A. de; BENTES, J. L. da S.; JESUS, M. A. de; ROCHA, L. C. da; FERNANDES, O. C. C.; ANDRADE, S. L. de; SOUZA, A. Q. L. de (Ed.). Diversidade microbiana da Amazônia. Manaus: Inpa, 2017. v. 2. p. 305-311.| Tipo: Capítulo em Livro Técnico-Científico |
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| 17. | | AMORIM, A. B. A.; SOUSA, T. F.; SILVA, G. F. da. Mineração genômica de Bacillus velezensis MPUR 51.6 voltada a identificação de genes relacionados ao biocontrole e promoção de crescimento vegetal. In: OLIVEIRA, L. A. de; OLIVEIRA, J. G. de S.; GASPAROTTO, L.; BENTES, J. L. da S.; ROCHA, L. C. da; JESUS, M. A. de; ANDRADE, S. L. de; CRUZ, K. S.; SOUZA, A. Q. L. de (ed.). Diversidade microbiana da Amazônia. Manaus: Editora do INPA, 2024. v. 4, p. 282-291.| Tipo: Capítulo em Livro Técnico-Científico |
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| 19. | | MOREIRA, J. M. M. A. P.; SOUSA, T. C. R. de. Macaúba: oportunidades e desafios. Agronline, 30 dez. 2009. Publicado também em: Maxpress Net, 30 dez. 2009; Agrolink, 30 dez. 2009; Portal Grupo Cultivar, dez. 2009; Guias Web, 05 jan. 2010; Portal Procitropicos, 05 fev. 2010; Portal Brasilagro, 05 fev. 2010; Rede dos Macaubeiros, 04 jun. 2010;...| Tipo: Artigo de Divulgação na Mídia |
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