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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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Registro original: |
Embrapa Solos (CNPS) |
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
10/11/2005 |
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Data da última atualização: |
20/12/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
LIMA, M. S. de; ALÉCIO, M. R.; FAZOLIN, M. |
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Afiliação: |
MARILENE DE S. LIMA, Universidade Federal do Acre (Ufac); MÁRCIO RODRIGO ALÉCIO, Universidade Federal do Acre (Ufac); MURILO FAZOLIN, CPAF-AC. |
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Título: |
Avaliação do potencial inseticida do óleo de Piper hispidinervum para Sitophilus zeamais Mots. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA PIBIC/CNPq/UFAC, 13., 2004, Rio Branco, AC. Anais... Rio Branco, AC: Ufac, 2004. |
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Páginas: |
1 p. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Conteúdo: |
O objetivo deste trabalho foi avaliar o potencial de inseticida do óleo essencial rico em safrol extraído da pimenta longa (Piper hispidinervum) no controle alternativo do gorgulho-do-milho, Sitophilus zeamais, em condições de laboratório. |
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Palavras-Chave: |
Aceites esenciales; Acre; Amazonia Occidental; Amazônia Ocidental; Embrapa Acre; Insecticidas botánicos; Maize weevil; Mortalidad; Plagas de almacén; Rio Branco (AC); Safrol; Western Amazon. |
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Thesagro: |
Gorgulho do Milho; Inseticida de Origem Vegetal; Inseto; Milho; Mortalidade Animal; Óleo Essencial; Pimenta Longa; Piper Hispidinervum; Praga de Produto Armazenado; Sitophilus Zeamais; Zea Mays. |
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Thesaurus NAL: |
Botanical insecticides; Corn; Essential oils; Mortality; Piper longum; Safrole; Storage pests. |
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Categoria do assunto: |
O Insetos e Entomologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/502909/1/11757.pdf
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Marc: |
LEADER 01715nam a2200505 a 4500
001 1502909
005 2023-12-20
008 2004 bl uuuu u00u1 u #d
100 1 $aLIMA, M. S. de
245 $aAvaliação do potencial inseticida do óleo de Piper hispidinervum para Sitophilus zeamais Mots.$h[electronic resource]
260 $aIn: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA PIBIC/CNPq/UFAC, 13., 2004, Rio Branco, AC. Anais... Rio Branco, AC: Ufac$c2004
300 $a1 p.$c1 CD-ROM.
520 $aO objetivo deste trabalho foi avaliar o potencial de inseticida do óleo essencial rico em safrol extraído da pimenta longa (Piper hispidinervum) no controle alternativo do gorgulho-do-milho, Sitophilus zeamais, em condições de laboratório.
650 $aBotanical insecticides
650 $aCorn
650 $aEssential oils
650 $aMortality
650 $aPiper longum
650 $aSafrole
650 $aStorage pests
650 $aGorgulho do Milho
650 $aInseticida de Origem Vegetal
650 $aInseto
650 $aMilho
650 $aMortalidade Animal
650 $aÓleo Essencial
650 $aPimenta Longa
650 $aPiper Hispidinervum
650 $aPraga de Produto Armazenado
650 $aSitophilus Zeamais
650 $aZea Mays
653 $aAceites esenciales
653 $aAcre
653 $aAmazonia Occidental
653 $aAmazônia Ocidental
653 $aEmbrapa Acre
653 $aInsecticidas botánicos
653 $aMaize weevil
653 $aMortalidad
653 $aPlagas de almacén
653 $aRio Branco (AC)
653 $aSafrol
653 $aWestern Amazon
700 1 $aALÉCIO, M. R.
700 1 $aFAZOLIN, M.
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