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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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Registro original: |
Embrapa Solos (CNPS) |
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Registro Completo
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
11/11/2021 |
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Data da última atualização: |
11/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
OLIVEIRA, V. F. de; BUSANELLO, C.; VIANA, V. E.; STAFEN, C. F.; PEDROLO, A. M.; PANIZ, F. P.; PEDRON, T.; PEREIRA, R. M.; ROSA, S. A.; MAGALHAES JUNIOR, A. M. de; OLIVEIRA, A. C. de; BATISTA, B. L.; PEGORARO, C. |
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Afiliação: |
VICTORIA FREITAS DE OLIVEIRA, UFPEL; CARLOS BUSANELLO; VÍVIAN EBELING VIANA; CÁSSIA FERNANDA STAFEN; ANA MARINA PEDROLO; FERNANDA POLLO PANIZ; TATIANA PEDRON; RODRIGO MENDES PEREIRA; SILVANA ALVES ROSA; ARIANO MARTINS DE MAGALHAES JUNIOR, CPACT; ANTONIO COSTA DE OLIVEIRA; BRUNO LEMOS BATISTA; CAMILA PEGORARO. |
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Título: |
Assessing mineral and toxic elements content in rice grains grown in southern Brazil. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Journal of Food Composition and Analysis, v. 100, 103914, July 2021. |
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DOI: |
https://doi.org/10.1016/j.jfca.2021.103914 |
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Idioma: |
Inglês |
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Conteúdo: |
The development of rice genotypes with higher mineral content and less accumulation of toxic elements can help to mitigate problems related to mineral deficiency and insure consumption of safe foods. However, genetic improvement depends on the presence of genetic diversity. Therefore, here we characterize a rice panel, grown in southern Brazil, regarding iron (Fe), zinc (Zn), selenium (Se), manganese (Mn), copper (Cu), arsenic (As), cadmium (Cd) and lead (Pb) content in irrigated system with permanent flooding. The environment of each harvest season significantly influenced Cu, Zn, Se, Fe and Mn content in rice grains. None of the analyzed rice genotypes can meet the daily recommendation of Fe and Zn, being the highest contents detected for these mineral of ∼17 and ∼27 mg kg−1, respectively. We detected genotypes able to supply Mn, Cu and Se demand, and genotypes accumulating ∼37, ∼5, ∼0.200 mg kg−1 were detected, respectively. None of the analyzed genotypes showed Cd and Pb accumulation above the Brazilian allowed limits. However, As content was above of the allowed limit for most of the studied accessions, and some genotypes reached 1 mg kg−1of As in their grains. Among the genotypes, low genetic diversity was detected for the evaluated elements. |
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Thesagro: |
Arroz. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02216naa a2200289 a 4500
001 2136090
005 2021-11-11
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.jfca.2021.103914$2DOI
100 1 $aOLIVEIRA, V. F. de
245 $aAssessing mineral and toxic elements content in rice grains grown in southern Brazil.$h[electronic resource]
260 $c2021
520 $aThe development of rice genotypes with higher mineral content and less accumulation of toxic elements can help to mitigate problems related to mineral deficiency and insure consumption of safe foods. However, genetic improvement depends on the presence of genetic diversity. Therefore, here we characterize a rice panel, grown in southern Brazil, regarding iron (Fe), zinc (Zn), selenium (Se), manganese (Mn), copper (Cu), arsenic (As), cadmium (Cd) and lead (Pb) content in irrigated system with permanent flooding. The environment of each harvest season significantly influenced Cu, Zn, Se, Fe and Mn content in rice grains. None of the analyzed rice genotypes can meet the daily recommendation of Fe and Zn, being the highest contents detected for these mineral of ∼17 and ∼27 mg kg−1, respectively. We detected genotypes able to supply Mn, Cu and Se demand, and genotypes accumulating ∼37, ∼5, ∼0.200 mg kg−1 were detected, respectively. None of the analyzed genotypes showed Cd and Pb accumulation above the Brazilian allowed limits. However, As content was above of the allowed limit for most of the studied accessions, and some genotypes reached 1 mg kg−1of As in their grains. Among the genotypes, low genetic diversity was detected for the evaluated elements.
650 $aArroz
700 1 $aBUSANELLO, C.
700 1 $aVIANA, V. E.
700 1 $aSTAFEN, C. F.
700 1 $aPEDROLO, A. M.
700 1 $aPANIZ, F. P.
700 1 $aPEDRON, T.
700 1 $aPEREIRA, R. M.
700 1 $aROSA, S. A.
700 1 $aMAGALHAES JUNIOR, A. M. de
700 1 $aOLIVEIRA, A. C. de
700 1 $aBATISTA, B. L.
700 1 $aPEGORARO, C.
773 $tJournal of Food Composition and Analysis$gv. 100, 103914, July 2021.
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