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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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| Registros recuperados : 155 | |
| 21. |  | BALBINO, L.; BRUAND, A.; BROSSARD, M.; GUIMARAES, M. F.; QUETIN, P. Degradation de la structure de latosols sous paturage dans les savanes bresiliennes (Cerrados). In: JOURNEES NATIONALES DE l'ETUDE DES SOLS, 6., 2000, Nancy, France. Les enjeux actuels de l'anthropisation des sols: programme & resumes. Nancy: AFES, 2000. p.16.| Biblioteca(s): Embrapa Cerrados. |
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| 22. | | BALBINO, L.; BRUAND, A.; BROSSARD, M.; GUIMARÃES, M. F.; QUÉTIN, P. Degradation de la structure de latosols sous paturage dans les savanes bresiliennes (Cerrados). In: JOURNEES NATIONALES DE L'ETUDE DES SOLS, 6., 2000, Nancy, Franca. Les enjeux actuels de l'anthropisation des sols: programme & resumes. Nancy: Association Francaise pour L'Etude des Sols, 2000. p. 16.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 28. | | MARCELINO, F. C.; BARROS, E. G. de; GUIMARÃES, M. F. C. Detection and quantificiation of Roundup Ready soybean residues in sausage samples by conventional and real-time PCR. In: CONGRESSO BRASILEIRO DE BIOSSEGURANÇA, 5.; SIMPÓSIO LATINO AMERICANO DE PRODUTOS TRANSGÊNICOS, 5.; SEMINÁRIO DE BIOENERGIA, 1.; SIMPÓSIO DE POPULARIZAÇÃO DA BIOTECNOLOGIA, 2.; MOSTRA DE BIOTECNOLOGIA PARA A SOCIEDADE, 1., 2007, Ouro Preto, MG. Anais dos eventos... Rio de Janeiro: Associação Nacional de Biossegurança, 2007. p. 122.| Tipo: Resumo em Anais de Congresso | Circulação/Nível: -- - -- |
| Biblioteca(s): Embrapa Soja. |
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| 31. | | SILVA, A. P.; BABUJIA, L.; NOGUEIRA, M. A.; HUNGRIA, M.; GUIMARÃES, M. F. Efeito de diferentes sistemas de manejo do solo e de culturas na qualidade do solo. In: CONGRESSO BRASILEIRO MICROBIOLOGIA, 27., SIMPÓSIO IBEROAMERICANO SOBRE MICRO-ORGANISMOS FOTOSSINTETIZANTES, 2.; SIMPÓSIO BRASILEIRO DE MICOBACTÉRIAS, 15.; SIMPÓSIO DE FERMENTAÇÃO ALCOÓLICA, 2.; BRAZILIAN MICROBIOME WORKSHOP; BRAZILIAN MICROBIOME PROJECT MEETING, 1.; SIMPÓSIO DE COLEÇÕES DE CULTURA, 4.; MINI-SIMPÓSIO SOBRE NEW DELHI METALO-BETA-LACTAMASE-1 (NDM-1); 2013, NATAL. Anais... [São Paulo]: Sociedade Brasileira de Microbiologia, 2013.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 33. | | JORGE, L. A. C.; GUIMARÃES, M. F.; TAVARES FILHO, J.; CRESTANA, S. Estudo de lâminas delgadas de solo: porosidade, agregados e fissuras, com o auxílio de processamento de imagens digitais. In: SIMPOSIO NACIONAL DE INSTRUMENTACAO AGROPECUARIA, 1., 1996, Sao Carlos. Anais do I SIAGRO. Brasilia: EMBRAPA-SPI, 1997. p. 284-289.| Biblioteca(s): Embrapa Instrumentação. |
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| 36. | | BROWN, G. G.; BENITO, N. P.; PASINI, A.; SAUTTER, K. D.; GUIMARÃES, M. F.; TORRES, E. Sistemas de uso e manejo do solo e as populações de minhocas na Região de Londrina, Paraná. In: CONGRESSO BRASILEIRO DE SOJA, 2.; MERCOSOJA 2002, 2002, Foz do Iguaçu. Perspectivas do agronegócio da soja: resumos. Londrina: Embrapa Soja, 2002. p. 132. (Embrapa Soja. Documentos, 181). Organizado por Odilon Ferreira Saraiva, Clara Beatriz Hoffmann-Campo.| Biblioteca(s): Embrapa Soja. |
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| Registros recuperados : 155 | |
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