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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
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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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| Registros recuperados : 9 | |
| 1. |  | SILVA, S. D. dos A. e; GUIDOLIN, A. F.; SCHLEDER, M. F.; GALON, G. Composição das subunidades de gluteninas de alto peso molecular associadas com a qualidade de panificação das cultivares de trigo brasileiras. In: ENCONTRO BRASILEIRO DE BIOTECNOLOGIA VEGETAL, 1., 1993, Brasília, DF. Programa e resumos... Poster 179. [Brasília, DF: EMBRAPA-CENARGEN, 1993]. Não paginado| Biblioteca(s): Embrapa Trigo. |
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| 3. | | STIVAL, A.; HAAS, J. C.; ARIAS, G.; FERREIRA, A.; GALON, G. Preliminary results on barley anther culture: comparison of 11 genotypes on two culture media. In: ENCONTRO BRASILEIRO DE BIOTECNOLOGIA VEGETAL, 1., 1993, Brasília, DF. Programas e resumos... [Brasília, DF: EMBRAPA-CENARGEN, 1993]. Não paginado.| Biblioteca(s): Embrapa Trigo. |
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| 4. | | SILVA, S. D. A.; STIVAL, A. L.; FERNANDES, M. I. B. de M.; GALON, G.; SCHLEDER, M.; CARDOSO, E. Produção de haploides de trigo através da hibridação trigo X milho no CNPT. In: ENCONTRO BRASILEIRO DE BIOTECNOLOGIA VEGETAL, 1., 1993, Brasília, DF. Programa e resumos... [Brasília, DF: EMBRAPA-CENARGEN, 1993]. Não paginado| Biblioteca(s): Embrapa Trigo. |
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| 5. | | SCHEEREN, P. L.; MORAES-FERNANDES, M. I. B. de; BRAMMER, S. P.; HAAS, J. C.; SCHLEDER, M. de F.; GALON, G. Haplodiploidização e eletroforese de gluteninas no melhoramento genético de trigo. Revista Brasileira de Genética, v. 20, n. 3, p. 143, Aug. 1997. Supplement. Resumo C.31.| Biblioteca(s): Embrapa Trigo. |
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| 8. | | PRESTES, A. M.; HAAS, J. C.; FERNANDES, M. I. B. de M.; SILVA, S. D. dos A. e; CARDOSO, E.; GALON, G.; FASSINI, J.; SCHLEDER, M.; BONFANTE, R.; GUIDOLIN, A.; TAUNOUS, I.; BARBOSA, M. M.; BRAMMER, S. P.; STIVAL, A.; ANGRA, D.; VASCONCELLOS, N.; PANDOLFI, V.; MULLER, J. E.; D'AGOSTINI, J.; FERREIRA, A. G.; VIEGAS, J. Técnicas de biologia celular e molecular como apoio ao melhoramento de cereais de inverno no Centro Nacional de Pesquisa de Trigo/EMBRAPA. In: REUNIÃO ESTADUAL DE BIOTECNOLOGIA VEGETAL, 7., 1994, Bento Gonçalves. Programa e resumos... [Porto Alegre]: Grupo Integrado de Biotecnologia Vegetal do Rio Grande do Sul, [1994]. p. 37-38 Cont. autores: VASCONCELLOS, N.; PANDOLFI, V.; MULLER, J. E.; D'AGOSTINI, J.; FERREIRA, A. G.; VIEGAS, J.| Biblioteca(s): Embrapa Trigo. |
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| 9. | | MORAES-FERNANDES, M. I. B. de; ARIAS, G.; CAETANO, V.; SCHEEREN, P.; SILVA, S.; SÓ e SILVA, M.; PRESTES, A. M.; BARCELOS, A.; STIVAL, A. L.; HAAS, J. C.; BRAMMER, S. P.; ANGRA, D.; BONATO, A. L.; GALON, G.; SCHLEDER, M.; MÜLLER, G.; RODRIGUES DA SILVA, V.; JORGE, N. Wheat and barley haplodiploidization by androgenesis and gimnogenesis at EMBRAPA-CNPT breeding programs. In: ENCONTRO BRASILEIRO DE BIOTECNOLOGIA VEGETAL, 2., 1997, Gramado. Programa e resumos... [S.l.]: REDBIO-Sul-região Brasil, [1997]. p. 118| Biblioteca(s): Embrapa Trigo. |
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| Registros recuperados : 9 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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