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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
10/10/2013 |
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Data da última atualização: |
04/04/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SOUZA, R. A.; BABUJIA, L. C.; SILVA, A. P.; GUIMARÃES, M. de F.; ARIAS, C. A.; HUNGRIA, M. |
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Afiliação: |
ROSINEI APARECIDA SOUZA, UEL; LETÍCIA CARLOS BABUJIA, UEM; ADRIANA PEREIRA SILVA, UEL; MARIA DE FÁTIMA GUIMARÃES, UEL; CARLOS ALBERTO ARRABAL ARIAS, CNPSO; MARIANGELA HUNGRIA DA CUNHA, CNPSO. |
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Título: |
Impact of the ahas transgene and of herbicides associated with the soybean crop on soil microbial communities. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Transgenic Research, v. 22, n. 5, p. 877-892, Oct. 2013. |
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DOI: |
DOI 10.1007/s11248-013-9691-x |
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Idioma: |
Inglês |
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Conteúdo: |
Although Brazil has recently reached the position as the second largest producer of genetically modified soybean [Glycine max (L.) Merr.], there are few reports on the effects of transgenic crops and the associated use of specific herbicides on soil microbial communities, both under the edaphoclimatic conditions in Brazil, and in other producer regions in the southern hemisphere. The aim of this study was to evaluate the effects of transgenic soybean containing the ahas gene conferring resistance to herbicides of the imidazolinone group, and of the herbicides associated with transgenic soybeans on the soil microbial community. Twenty field experiments were carried out during three growing seasons (summer of 2006/2007, short-season of 2007 and summer of 2007/2008), in nine municipalities located in six Brazilian states and in the Federal District. The experiments were conducted using a completely randomized block design with four replicates and three treatments: (1) conventional (non-transgenic) soybean cultivar Conquista with conventional herbicides (bentazone + acifluorfen-sodium and other herbicides, depending on the level of infestation in each region); (2) near-isogenic transgenic Cultivance (CV127) containing the ahas gene, with conventional herbicides; (3) transgenic Cultivance with specific herbicide of the imidazolinone group (imazapyr). As the objective of the study was to verify impacts of the transgene and herbicides on the soil microbial community of the whole area and not only a punctual rhizospheric effects, samples were taken at the 0?10 cm layer prior to cropping and at R2 soybean growth stage, between plant rows. Quantitative (microbial biomass C and N, MB-C and MB-N) and qualitative (DGGE of the 16S rDNA region) parameters of soil microbial community were evaluated. No qualitative or quantitative differences were found that could be attributed to the transgene ahas. A comparison of Cultivance soybean with conventional and imidazolinone-group herbicides applications also failed to reveal differences that could be attributed to the specific use of imazapyr, even after three consecutive croppings at the same site. Finally, no differences were detected between conventional (Conquista and conventional herbicides) and transgenic soybean managements (Cultivance and imazapyr). However, marked differences were observed in MB-C and MB-N between the different sites and times of year and, for the 16S rDNA-DGGE profiles, between different sites. In conclusion, microbial community evaluations were found to be sensitive and viable for monitoring different technologies and agricultural management methods, but no differences could be attributed to the ahas transgene for three consecutive cropping seasons. MenosAlthough Brazil has recently reached the position as the second largest producer of genetically modified soybean [Glycine max (L.) Merr.], there are few reports on the effects of transgenic crops and the associated use of specific herbicides on soil microbial communities, both under the edaphoclimatic conditions in Brazil, and in other producer regions in the southern hemisphere. The aim of this study was to evaluate the effects of transgenic soybean containing the ahas gene conferring resistance to herbicides of the imidazolinone group, and of the herbicides associated with transgenic soybeans on the soil microbial community. Twenty field experiments were carried out during three growing seasons (summer of 2006/2007, short-season of 2007 and summer of 2007/2008), in nine municipalities located in six Brazilian states and in the Federal District. The experiments were conducted using a completely randomized block design with four replicates and three treatments: (1) conventional (non-transgenic) soybean cultivar Conquista with conventional herbicides (bentazone + acifluorfen-sodium and other herbicides, depending on the level of infestation in each region); (2) near-isogenic transgenic Cultivance (CV127) containing the ahas gene, with conventional herbicides; (3) transgenic Cultivance with specific herbicide of the imidazolinone group (imazapyr). As the objective of the study was to verify impacts of the transgene and herbicides on the soil microbial community of the whole ar... Mostrar Tudo |
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Thesagro: |
Soja. |
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Categoria do assunto: |
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Marc: |
LEADER 03393naa a2200205 a 4500
001 1968271
005 2022-04-04
008 2013 bl uuuu u00u1 u #d
024 7 $aDOI 10.1007/s11248-013-9691-x$2DOI
100 1 $aSOUZA, R. A.
245 $aImpact of the ahas transgene and of herbicides associated with the soybean crop on soil microbial communities.$h[electronic resource]
260 $c2013
520 $aAlthough Brazil has recently reached the position as the second largest producer of genetically modified soybean [Glycine max (L.) Merr.], there are few reports on the effects of transgenic crops and the associated use of specific herbicides on soil microbial communities, both under the edaphoclimatic conditions in Brazil, and in other producer regions in the southern hemisphere. The aim of this study was to evaluate the effects of transgenic soybean containing the ahas gene conferring resistance to herbicides of the imidazolinone group, and of the herbicides associated with transgenic soybeans on the soil microbial community. Twenty field experiments were carried out during three growing seasons (summer of 2006/2007, short-season of 2007 and summer of 2007/2008), in nine municipalities located in six Brazilian states and in the Federal District. The experiments were conducted using a completely randomized block design with four replicates and three treatments: (1) conventional (non-transgenic) soybean cultivar Conquista with conventional herbicides (bentazone + acifluorfen-sodium and other herbicides, depending on the level of infestation in each region); (2) near-isogenic transgenic Cultivance (CV127) containing the ahas gene, with conventional herbicides; (3) transgenic Cultivance with specific herbicide of the imidazolinone group (imazapyr). As the objective of the study was to verify impacts of the transgene and herbicides on the soil microbial community of the whole area and not only a punctual rhizospheric effects, samples were taken at the 0?10 cm layer prior to cropping and at R2 soybean growth stage, between plant rows. Quantitative (microbial biomass C and N, MB-C and MB-N) and qualitative (DGGE of the 16S rDNA region) parameters of soil microbial community were evaluated. No qualitative or quantitative differences were found that could be attributed to the transgene ahas. A comparison of Cultivance soybean with conventional and imidazolinone-group herbicides applications also failed to reveal differences that could be attributed to the specific use of imazapyr, even after three consecutive croppings at the same site. Finally, no differences were detected between conventional (Conquista and conventional herbicides) and transgenic soybean managements (Cultivance and imazapyr). However, marked differences were observed in MB-C and MB-N between the different sites and times of year and, for the 16S rDNA-DGGE profiles, between different sites. In conclusion, microbial community evaluations were found to be sensitive and viable for monitoring different technologies and agricultural management methods, but no differences could be attributed to the ahas transgene for three consecutive cropping seasons.
650 $aSoja
700 1 $aBABUJIA, L. C.
700 1 $aSILVA, A. P.
700 1 $aGUIMARÃES, M. de F.
700 1 $aARIAS, C. A.
700 1 $aHUNGRIA, M.
773 $tTransgenic Research$gv. 22, n. 5, p. 877-892, Oct. 2013.
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Embrapa Soja (CNPSO) |
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| 138. |  | SILVA, E. H. da; CARVALHO, M. P. de; OLIVEIRA, S. T. de; LINS, L. C. P.; ALMEIDA, G. Q. de; HIROSE, E. Avaliação da desfolha no inicio do desenvolvimento da soja. In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 24., 2012, Curitiba. SEB-40 anos de avanços da Ciência Entomológica Brasileira: anais. [Curitiba]: SEB, 2012. Disponível em: .| Tipo: Resumo em Anais de Congresso |
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| 139. | | BENITES, V. M.; BETTA, M.; ROJAS, E. P.; SOARES, L. C. S.; FRANCHINI, J. C.; HERNANI, L. C.; TAVARES, S.; ESCALADEIRA, V. Avaliação do efeito de aplicação foliar de soluções contendo ácidos húmicos sobre a produtividade e a absorção de nutrientes pela soja. In: REUNIÃO DE PESQISA DE SOJA DA REGIÃO CENTRAL DO BRASIL, 30., 2008, Londrina. Resumos... Londrina: Embrapa Soja, 2008. (Embrapa Soja. Documentos, 304). Organizado por: Organizado por Odilon Ferreira Saraiva, César de Castro, Regina Maria Villas Bôas de Campos Leite, Fábio Alvares de Oliveira. 290-293| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agropecuária Oeste. |
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| 140. | | BENITES, V. de M.; BETTA, M.; ROJAS, E. P.; SOARES, L. C. S.; FRANCHINI, J. C.; HERNANI, L. C.; TAVARES, S. R. de L.; ESCALEIRA, V. Avaliação do efeito de aplicação foliar de soluções contendo ácidos húmicos sobre a produtividade e a absorção de nutrientes pela soja. In: REUNIÃO DE PESQUISA DE SOJA DA REGIÃO CENTRAL DO BRASIL, 30., 2008, Rio Verde. Resumos... Londrina: Embrapa Soja, 2008. p. 290-292. (Embrapa Soja. Documentos, 304).| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Solos. |
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