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Registro Completo |
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
11/04/2024 |
Data da última atualização: |
11/04/2024 |
Autoria: |
SILVA, M. R. S. S. da; BRESOLIN, J. D.; KRUGER, R. H.; BUSTAMANTE, M. M. C.; REIS JUNIOR, F. B. dos. |
Afiliação: |
MARIA REGINA SILVEIRA SARTORI DA SILVA, UNIVERSIDADE DE BRASÍLIA; JOANA DIAS BRESOLIN, UNIVERSIDADE DE BRASÍLIA; RICARDO HENRIQUE KRUGER, UNIVERSIDADE CATÓLICA DE BRASÍLIA; MERCEDES MARIA CUNHA BUSTAMANTE, UNIVERSIDADE DE BRASÍLIA; FABIO BUENO DOS REIS JUNIOR, CPAC. |
Título: |
Effects of land use changes on soil microbial communities in the Cerrado region. |
Ano de publicação: |
2004 |
Fonte/Imprenta: |
In: CONFERÊNCIA CIENTÍFICA DO LBA, 3., 2004, Brasília, DF. Anais de trabalhos completos. Brasília, DF: LBA, 2004. |
Páginas: |
1 p. |
Idioma: |
Inglês |
Conteúdo: |
The composition and activity of soil microbial communities largely determine biogeochemical cycles, the turnover process of organic matter, and the fertility and quality of solis. Plant communities can influence associated soil microbial communities through the types and amounts of C and nutrients inputs by altering the temperature and water content of the soil. The intensification of agricultural activities in the Cerrado region (savannas of Central Brazil) results in the replacement of native vegetation cover, changes in fire regime and soil physical and chemical properties. As most of soil microorganisms cannot be characterized by conventional cultivation techniques, after soil DNA extraction we used DGGE (Denaturing Gradient Gel Electrophoresis) to investigate soil microbial communities through the comparison of band patterns. Soil samples were taken from 0-5 cm depth in native Cerrado areas (campo sujo and cerrado restricted sense) and in pasture areas. The burned and unburned plots of the two native vegetation types were sampled 2, 10 and 30 days after burning. The samples were collected during the wet and dry season as well as during the transition wet to dry season. Soil DNA was obtained by direct DNA extraction and was amplified by PCr using 16S primers, U968f and L1401r. The comparison of band patterns (amount, position and intensity of bands) indicates significant differences between native and pasture sites and between seasons (wet and dry) and between unburned native áreas. MenosThe composition and activity of soil microbial communities largely determine biogeochemical cycles, the turnover process of organic matter, and the fertility and quality of solis. Plant communities can influence associated soil microbial communities through the types and amounts of C and nutrients inputs by altering the temperature and water content of the soil. The intensification of agricultural activities in the Cerrado region (savannas of Central Brazil) results in the replacement of native vegetation cover, changes in fire regime and soil physical and chemical properties. As most of soil microorganisms cannot be characterized by conventional cultivation techniques, after soil DNA extraction we used DGGE (Denaturing Gradient Gel Electrophoresis) to investigate soil microbial communities through the comparison of band patterns. Soil samples were taken from 0-5 cm depth in native Cerrado areas (campo sujo and cerrado restricted sense) and in pasture areas. The burned and unburned plots of the two native vegetation types were sampled 2, 10 and 30 days after burning. The samples were collected during the wet and dry season as well as during the transition wet to dry season. Soil DNA was obtained by direct DNA extraction and was amplified by PCr using 16S primers, U968f and L1401r. The comparison of band patterns (amount, position and intensity of bands) indicates significant differences between native and pasture sites and between seasons (wet and dry) and between unburned n... Mostrar Tudo |
Thesaurus Nal: |
Cerrado soils; Land; Microbial communities. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1163509/1/Effects-of-land-use-changes-on-soil.pdf
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Marc: |
LEADER 02190nam a2200205 a 4500 001 2163509 005 2024-04-11 008 2004 bl uuuu u00u1 u #d 100 1 $aSILVA, M. R. S. S. da 245 $aEffects of land use changes on soil microbial communities in the Cerrado region.$h[electronic resource] 260 $aIn: CONFERÊNCIA CIENTÍFICA DO LBA, 3., 2004, Brasília, DF. Anais de trabalhos completos. Brasília, DF: LBA$c2004 300 $a1 p. 520 $aThe composition and activity of soil microbial communities largely determine biogeochemical cycles, the turnover process of organic matter, and the fertility and quality of solis. Plant communities can influence associated soil microbial communities through the types and amounts of C and nutrients inputs by altering the temperature and water content of the soil. The intensification of agricultural activities in the Cerrado region (savannas of Central Brazil) results in the replacement of native vegetation cover, changes in fire regime and soil physical and chemical properties. As most of soil microorganisms cannot be characterized by conventional cultivation techniques, after soil DNA extraction we used DGGE (Denaturing Gradient Gel Electrophoresis) to investigate soil microbial communities through the comparison of band patterns. Soil samples were taken from 0-5 cm depth in native Cerrado areas (campo sujo and cerrado restricted sense) and in pasture areas. The burned and unburned plots of the two native vegetation types were sampled 2, 10 and 30 days after burning. The samples were collected during the wet and dry season as well as during the transition wet to dry season. Soil DNA was obtained by direct DNA extraction and was amplified by PCr using 16S primers, U968f and L1401r. The comparison of band patterns (amount, position and intensity of bands) indicates significant differences between native and pasture sites and between seasons (wet and dry) and between unburned native áreas. 650 $aCerrado soils 650 $aLand 650 $aMicrobial communities 700 1 $aBRESOLIN, J. D. 700 1 $aKRUGER, R. H. 700 1 $aBUSTAMANTE, M. M. C. 700 1 $aREIS JUNIOR, F. B. dos
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Embrapa Cerrados (CPAC) |
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Registro Completo
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
11/07/1994 |
Data da última atualização: |
11/07/1994 |
Autoria: |
SOUSA, D. M. G. de; REIN, T. A.; LOBATO, E.; RITCHEY, K. D. |
Título: |
Sugestoes para diagnose e recomendacao em solos de cerrado. |
Ano de publicação: |
1992 |
Fonte/Imprenta: |
In: SEMINARIO SOBRE O USO DO GESSO NA AGRICULTURA, 2., 1992, Uberaba. [Anais]. Uberaba: IBRAFOS, 1992. |
Páginas: |
p.138-158. |
Idioma: |
Português |
Palavras-Chave: |
Diagnose; Diagnosis; Recomendacao. |
Thesagro: |
Adubação; Cerrado; Gesso; Solo Ácido. |
Thesaurus NAL: |
acid soils; fertilizer application; gypsum. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00756naa a2200277 a 4500 001 1548908 005 1994-07-11 008 1992 bl uuuu u00u1 u #d 100 1 $aSOUSA, D. M. G. de 245 $aSugestoes para diagnose e recomendacao em solos de cerrado. 260 $c1992 300 $ap.138-158. 650 $aacid soils 650 $afertilizer application 650 $agypsum 650 $aAdubação 650 $aCerrado 650 $aGesso 650 $aSolo Ácido 653 $aDiagnose 653 $aDiagnosis 653 $aRecomendacao 700 1 $aREIN, T. A. 700 1 $aLOBATO, E. 700 1 $aRITCHEY, K. D. 773 $tIn: SEMINARIO SOBRE O USO DO GESSO NA AGRICULTURA, 2., 1992, Uberaba. [Anais]. Uberaba: IBRAFOS, 1992.
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