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Registro Completo |
Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Cerrados. |
Data corrente: |
15/09/2010 |
Data da última atualização: |
15/09/2010 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
PEIXOTO, R. S.; CHAER, G. M.; FRANCO, N.; REIS JUNIOR, F. B. dos; MENDES, I. de C.; ROSADO, A. S. |
Afiliação: |
RAQUEL. S. PEIXOTO, UFRJ; GUILHERME MONTANDON CHAER, CNPAB; N. FRANCO, UFRJ; FABIO BUENO DOS REIS JUNIOR, CPAC; IEDA DE CARVALHO MENDES, CPAC; A. S. ROSADO, UFRJ. |
Título: |
A decade of land use contributes to changes in the chemistry, biochemistry and bacterial community structures of soils in the Cerrado. |
Ano de publicação: |
2010 |
Fonte/Imprenta: |
Antonie van Leeuwenhoek, v. 98, n. 3, p. 403-413, 2010. |
Idioma: |
Inglês |
Conteúdo: |
The bacterial community structures (BCSs) of Cerrado soils cultivated under conventional tillage (CT), no-tillage (NT) and under native Cerrado (NC) vegetation were evaluated using PCR/DGGE of bacterial 16S rRNA (rrs) and rpoB genes and of Pseudomonas group genes. Soil chemical analysis, microbial biomass and the enzyme activities were also evaluated and correlated with the BCS measurements. The multivariate ordinations of DGGE profiles showed differences between the BCS of the NC area and those from cultivated areas. The BCSs of the CT and NT areas also differed in all DGGE fingerprints, including changes in the profile of Pseudomonas populations, indicating that agricultural systems can also be responsible for changes within specific microbial niches, although the clearest differences were found in the rpoB profiles. The MRPP analysis demonstrated significant differences between the BCSs from different soil layers of NT areas based on all gene fingerprints and those of NC areas based on bacterial 16S rRNA and rpoB genes fingerprints. No differences were observed in the microbial fingerprints of CT samples from different depths, indicating that ploughing affected the original BCS stratification. The BCS from NC areas, based on all gene fingerprints, could be related to higher levels of soil acidity and higher amounts of MBC and of phosphatase activity. In contrast, the BCSs from cultivated areas were related to higher levels of Ca + Mg, P and K, likely as a result of a history of chemical fertilisation in these areas. The relationships between rpoB and Pseudomonas BCSs and all chemical and biochemical properties of soils were significant, according to a Mantel test (P < 0.05), indicating that the different changes in soil properties induced by soil use or management may drive the formation of the soil BCS. MenosThe bacterial community structures (BCSs) of Cerrado soils cultivated under conventional tillage (CT), no-tillage (NT) and under native Cerrado (NC) vegetation were evaluated using PCR/DGGE of bacterial 16S rRNA (rrs) and rpoB genes and of Pseudomonas group genes. Soil chemical analysis, microbial biomass and the enzyme activities were also evaluated and correlated with the BCS measurements. The multivariate ordinations of DGGE profiles showed differences between the BCS of the NC area and those from cultivated areas. The BCSs of the CT and NT areas also differed in all DGGE fingerprints, including changes in the profile of Pseudomonas populations, indicating that agricultural systems can also be responsible for changes within specific microbial niches, although the clearest differences were found in the rpoB profiles. The MRPP analysis demonstrated significant differences between the BCSs from different soil layers of NT areas based on all gene fingerprints and those of NC areas based on bacterial 16S rRNA and rpoB genes fingerprints. No differences were observed in the microbial fingerprints of CT samples from different depths, indicating that ploughing affected the original BCS stratification. The BCS from NC areas, based on all gene fingerprints, could be related to higher levels of soil acidity and higher amounts of MBC and of phosphatase activity. In contrast, the BCSs from cultivated areas were related to higher levels of Ca + Mg, P and K, likely as a result of a hist... Mostrar Tudo |
Thesagro: |
Bactéria; Cerrado; Plantio; Solo; Uso da Terra. |
Categoria do assunto: |
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Marc: |
LEADER 02536naa a2200241 a 4500 001 1862292 005 2010-09-15 008 2010 bl --- 0-- u #d 100 1 $aPEIXOTO, R. S. 245 $aA decade of land use contributes to changes in the chemistry, biochemistry and bacterial community structures of soils in the Cerrado. 260 $c2010 520 $aThe bacterial community structures (BCSs) of Cerrado soils cultivated under conventional tillage (CT), no-tillage (NT) and under native Cerrado (NC) vegetation were evaluated using PCR/DGGE of bacterial 16S rRNA (rrs) and rpoB genes and of Pseudomonas group genes. Soil chemical analysis, microbial biomass and the enzyme activities were also evaluated and correlated with the BCS measurements. The multivariate ordinations of DGGE profiles showed differences between the BCS of the NC area and those from cultivated areas. The BCSs of the CT and NT areas also differed in all DGGE fingerprints, including changes in the profile of Pseudomonas populations, indicating that agricultural systems can also be responsible for changes within specific microbial niches, although the clearest differences were found in the rpoB profiles. The MRPP analysis demonstrated significant differences between the BCSs from different soil layers of NT areas based on all gene fingerprints and those of NC areas based on bacterial 16S rRNA and rpoB genes fingerprints. No differences were observed in the microbial fingerprints of CT samples from different depths, indicating that ploughing affected the original BCS stratification. The BCS from NC areas, based on all gene fingerprints, could be related to higher levels of soil acidity and higher amounts of MBC and of phosphatase activity. In contrast, the BCSs from cultivated areas were related to higher levels of Ca + Mg, P and K, likely as a result of a history of chemical fertilisation in these areas. The relationships between rpoB and Pseudomonas BCSs and all chemical and biochemical properties of soils were significant, according to a Mantel test (P < 0.05), indicating that the different changes in soil properties induced by soil use or management may drive the formation of the soil BCS. 650 $aBactéria 650 $aCerrado 650 $aPlantio 650 $aSolo 650 $aUso da Terra 700 1 $aCHAER, G. M. 700 1 $aFRANCO, N. 700 1 $aREIS JUNIOR, F. B. dos 700 1 $aMENDES, I. de C. 700 1 $aROSADO, A. S. 773 $tAntonie van Leeuwenhoek$gv. 98, n. 3, p. 403-413, 2010.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
18/09/2015 |
Data da última atualização: |
10/03/2016 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
SILVA, E. da; VELASQUEZ, E.; SANTOS, A.; BARTZ, M. L. C.; LAVELLE, P.; BROWN, G. G. |
Afiliação: |
Elodie da Silva, Pós-doutoranda CNPF; Elena Velasquez, Universidad Nacional de Colombia; Alessandra Santos, Mestranda UFPR; Marie Luise Carolina Bartz, UFPR; Patrick Lavelle, Institut de Recherche pour le Développement; GEORGE GARDNER BROWN, CNPF. |
Título: |
Evaluation of soil quality in different land-use systems of South Brazil. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
In: ENCONTRO LATINO-AMERICANO DE ECOLOGIA E TAXONOMIA DE OLIGOQUETAS, 5; SIMPÓSIO ENGENHEIROS EDÁFICOS, FERTILIDADE DO SOLO E TERRA PRETA DE ÍNDIO (TPI), 2015, Curitiba. Anais. [S.l.]: Federação Brasileira de plantio direto de irrigação, 2015. |
Páginas: |
p. 34. |
Descrição Física: |
Disponível online. |
Idioma: |
Inglês |
Notas: |
Resumo. 5° ELAETAO. |
Palavras-Chave: |
Brasil; Qualidade do solo; Sistema de uso da terra. |
Thesagro: |
Solo. |
Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/129977/1/2015-GeorgeB-ELAETAO-Evaluation.pdf
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Marc: |
LEADER 00875nam a2200229 a 4500 001 2024402 005 2016-03-10 008 2015 bl uuuu u00u1 u #d 100 1 $aSILVA, E. da 245 $aEvaluation of soil quality in different land-use systems of South Brazil.$h[electronic resource] 260 $aIn: ENCONTRO LATINO-AMERICANO DE ECOLOGIA E TAXONOMIA DE OLIGOQUETAS, 5; SIMPÓSIO ENGENHEIROS EDÁFICOS, FERTILIDADE DO SOLO E TERRA PRETA DE ÍNDIO (TPI), 2015, Curitiba. Anais. [S.l.]: Federação Brasileira de plantio direto de irrigação$c2015 300 $ap. 34.$cDisponível online. 500 $aResumo. 5° ELAETAO. 650 $aSolo 653 $aBrasil 653 $aQualidade do solo 653 $aSistema de uso da terra 700 1 $aVELASQUEZ, E. 700 1 $aSANTOS, A. 700 1 $aBARTZ, M. L. C. 700 1 $aLAVELLE, P. 700 1 $aBROWN, G. G.
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Embrapa Florestas (CNPF) |
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