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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
09/10/2013 |
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Data da última atualização: |
07/03/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, A. P.; BABUJIA, L. S.; MATSUMOTO, M. F.; GUIMARÃES, M. F.; HUNGRIA, M. |
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Afiliação: |
UEL; UEM; UENP; UEL; MARIANGELA HUNGRIA DA CUNHA, CNPSO. |
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Título: |
Bacterial diversity under different tillage and crop rotation systems in an oxisol of Southern Brazil. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
The Open Agriculture Journal, v. 7, Suppl 1-M6, p. 40-47, 2013. |
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Idioma: |
Inglês |
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Conteúdo: |
Microbial diversity can be used to assess the impact of agricultural practices on the long-term sustainability of cropping systems. The aim of this study was to investigate changes in soil bacterial diversity as a result of the impact of different soil tillage and crop rotation systems in an oxisol of southern Brazil. Bacterial diversity was examined in the 0-10 cm layer in two field experiments by analyzing soil DNA using 16S rDNA-DGGE profiles. Experiment one consisted of a long-term 26-year trial with four soil tillage management systems: (1) no-tillage (NT), (2) disc plow (DP), (3) field cultivator (FC), and (4) heavy-disc harrow (DH), all under soybean (summer)/wheat (winter) crop succession. Experiment two consisted of a short-term 10-year trial with DP and NT and three crop rotations (CR) including grasses, legumes and green manures. Cluster analysis of the 16S rDNA sequences revealed that the main effect on clustering was attributed to differences in soil tillage management systems. The Shannon index confirmed greater bacterial diversity under NT, followed by the FC, DH and DP. Therefore, diversity decreased as tillage practices intensified. The evenness index demonstrated uniformity of the profiles of the bacterial communities, with dominance of a few communities, regardless of soil tillage and crop rotation. Different crop rotations had only minor effects on bacterial diversity, what could be related to a previous fallow period. The results suggest that bacterial diversity analyzed by DGGE may be useful as bioindicator of the changes caused by soil tillage. MenosMicrobial diversity can be used to assess the impact of agricultural practices on the long-term sustainability of cropping systems. The aim of this study was to investigate changes in soil bacterial diversity as a result of the impact of different soil tillage and crop rotation systems in an oxisol of southern Brazil. Bacterial diversity was examined in the 0-10 cm layer in two field experiments by analyzing soil DNA using 16S rDNA-DGGE profiles. Experiment one consisted of a long-term 26-year trial with four soil tillage management systems: (1) no-tillage (NT), (2) disc plow (DP), (3) field cultivator (FC), and (4) heavy-disc harrow (DH), all under soybean (summer)/wheat (winter) crop succession. Experiment two consisted of a short-term 10-year trial with DP and NT and three crop rotations (CR) including grasses, legumes and green manures. Cluster analysis of the 16S rDNA sequences revealed that the main effect on clustering was attributed to differences in soil tillage management systems. The Shannon index confirmed greater bacterial diversity under NT, followed by the FC, DH and DP. Therefore, diversity decreased as tillage practices intensified. The evenness index demonstrated uniformity of the profiles of the bacterial communities, with dominance of a few communities, regardless of soil tillage and crop rotation. Different crop rotations had only minor effects on bacterial diversity, what could be related to a previous fallow period. The results suggest that bacterial d... Mostrar Tudo |
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Thesagro: |
Solo. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/90739/1/bacterial-diversity.pdf
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Marc: |
LEADER 02151naa a2200181 a 4500
001 1968218
005 2014-03-07
008 2013 bl uuuu u00u1 u #d
100 1 $aSILVA, A. P.
245 $aBacterial diversity under different tillage and crop rotation systems in an oxisol of Southern Brazil.$h[electronic resource]
260 $c2013
520 $aMicrobial diversity can be used to assess the impact of agricultural practices on the long-term sustainability of cropping systems. The aim of this study was to investigate changes in soil bacterial diversity as a result of the impact of different soil tillage and crop rotation systems in an oxisol of southern Brazil. Bacterial diversity was examined in the 0-10 cm layer in two field experiments by analyzing soil DNA using 16S rDNA-DGGE profiles. Experiment one consisted of a long-term 26-year trial with four soil tillage management systems: (1) no-tillage (NT), (2) disc plow (DP), (3) field cultivator (FC), and (4) heavy-disc harrow (DH), all under soybean (summer)/wheat (winter) crop succession. Experiment two consisted of a short-term 10-year trial with DP and NT and three crop rotations (CR) including grasses, legumes and green manures. Cluster analysis of the 16S rDNA sequences revealed that the main effect on clustering was attributed to differences in soil tillage management systems. The Shannon index confirmed greater bacterial diversity under NT, followed by the FC, DH and DP. Therefore, diversity decreased as tillage practices intensified. The evenness index demonstrated uniformity of the profiles of the bacterial communities, with dominance of a few communities, regardless of soil tillage and crop rotation. Different crop rotations had only minor effects on bacterial diversity, what could be related to a previous fallow period. The results suggest that bacterial diversity analyzed by DGGE may be useful as bioindicator of the changes caused by soil tillage.
650 $aSolo
700 1 $aBABUJIA, L. S.
700 1 $aMATSUMOTO, M. F.
700 1 $aGUIMARÃES, M. F.
700 1 $aHUNGRIA, M.
773 $tThe Open Agriculture Journal$gv. 7, Suppl 1-M6, p. 40-47, 2013.
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Registro original: |
Embrapa Soja (CNPSO) |
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| 222. |  | CRUZ, J. C.; VIANA, J. H. M.; ALVARENGA, R. C.; PEREIRA FILHO, I. A.; SANTANA, D. P.; PEREIRA, F. T. F.; HERNANI, L. C. Manejo de solos: sistema plantio direto. In: CRUZ, J. C. (Ed.). Cultivo do milho. 4. ed. Sete Lagoas: Embrapa Milho e Sorgo, 2008. (Embrapa Milho e Sorgo. Sistema de produção, 1).| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 224. | | CARDOSO, M. A.; SOUZA, R. A. C. de; FERNANDES, A. H. B. M.; FERNANDES, F. A.; MONTEIRO, H. de C. Mineralização e nitrificação líquidas de nitrogênio do solo sob pastagens no Pantanal, MS. In: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA PANTANAL, 4.; SEMANA DA BIOLOGIA, 9., 2010, Corumbá. Resumos ... Corumbá: Embrapa Pantanal, 2010. p.30. (Embrapa Pantanal. Documentos, 108).| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pantanal. |
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| 225. | | BRINATTI, A. M.; MASCARENHAS, Y. P.; PEREIRA, V. P.; PARTITI, C. S. de M.; MACEDO, A. Mineralogical characterization of a highly-weathered soil by the rietveld method. Scientia Agricola, Piracicaba, v. 67, n. 4, p. 454-464, 2010.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Instrumentação. |
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| 226. | | MORAES, M. T. de; DEBIASI, H.; FRANCHINI, J. C.; LEVIEN, R.; BENGOUGH, A. G. Modelagem do crescimento radicular em função da dinâmica da água e resistência do solo. In: REUNIÃO BRASILEIRA DE MANEJO E CONSERVAÇÃO DO SOLO E DA ÁGUA, 20., 2016, Foz do Iguaçu. O solo sob ameaça: conexões necessárias ao manejo e conservação do solo e água: anais. Curitiba: SBCS-NEPAR; Londrina: IAPAR, 2016. p. 564-566. Livro digital. Editado por Arnaldo Colozzi Filho, João Henrique Caviglione, Graziela Moraes de Cesare Barbosa, Luciano Grillo Gil, Tiago Santos Telles.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 229. | | MACEDO, S. C.; NEVES, A. A. O.; NEVES, A. P.; PAULA, R. Q.; OLIVEIRA, A. C. de; ANDRADE, R. F.; COELHO, A. M.; MARRIEL, I. E. Impacto da aplicação de rochas silicáticas sobre a qualidade do solo determinada através da atividade da urease. In: CONGRESSO BRASILEIRO DE MICROBIOLOGIA, 24.; SIMPÓSIO BRASILEIRO DE MICROBACTÉRIAS, 12.; SIMPÓSIO DE COLEÇÕES DE CULTURA, 2.; ENCONTRO DE ENSINO EM MICROBIOLOGIA, 4., 2007, Brasília, DF. Anais. [São Paulo]: SBM, 2007. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 232. | | SMYTH, T. J.; CRAVO, M. D. S. Nutrient dynamics. In: CAUDLE, N. (Ed.). Tropsoils technical report 1986-1987. Raleigh: North Carolina State University, 1989. p. 148.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Amazônia Ocidental. |
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| 239. | | CECCON, G.; KURIHARA, C. H. Oportunidades e desafios do consórcio milho-braquiária na ILP. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 30.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 14.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 12.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 9.; SIMPÓSIO SOBRE SELÊNIO NO BRASIL, 1., 2012, Maceió. A responsabilidade socioambiental da pesquisa agrícola: anais. Viçosa: SBCS, 2012. Fertbio. Organizado por Leila Cruz da Silva, Gilson Moura Filho, Adriano Barboza Moura, Abel Washington de Albuquerque.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Agropecuária Oeste. |
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