|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
10/10/2013 |
Data da última atualização: |
04/04/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SOUZA, R. A.; BABUJIA, L. C.; SILVA, A. P.; GUIMARÃES, M. de F.; ARIAS, C. A.; HUNGRIA, M. |
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. |
Título: |
Impact of the ahas transgene and of herbicides associated with the soybean crop on soil microbial communities. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
Transgenic Research, v. 22, n. 5, p. 877-892, Oct. 2013. |
DOI: |
DOI 10.1007/s11248-013-9691-x |
Idioma: |
Inglês |
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 |
Thesagro: |
Soja. |
Categoria do assunto: |
-- |
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.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Soja (CNPSO) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registro Completo
Biblioteca(s): |
Embrapa Algodão; Embrapa Recursos Genéticos e Biotecnologia; Embrapa Unidades Centrais. |
Data corrente: |
18/09/2014 |
Data da última atualização: |
23/01/2015 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
PIRES, C. S. S.; SILVEIRA, F. A.; CARDOSO, C. F.; SUJII, E. R.; PAULA, D. P.; FONTES, E. M. G.; SILVA, J. P. da; RODRIGUES, S. M. M.; ANDOW, D. A. |
Afiliação: |
CARMEN SILVIA SOARES PIRES, CENARGEN; FERNANDO AMARAL SILVEIRA, UFMG; CAROLINA FERREIRA CARDOSO, UFMG; EDISON RYOITI SUJII, CENARGEN; DEBORA PIRES PAULA, CENARGEN; ELIANA MARIA GOUVEIA FONTES, CENARGEN; JOSEANE PADILHA DA SILVA, CENARGEN; SANDRA MARIA MORAIS RODRIGUES, CNPA; DAVID ALAN ANDOW, University of Minnesota. |
Título: |
Selection of bee species for environmental risk assessment of GM cotton in the brazilian Cerrado. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 49, n. 8, p. 573-586, ago. 2014. |
Idioma: |
Inglês Português |
Conteúdo: |
The objective of this work was to list potential candidate bee species for environmental risk assessment (ERA) of genetically modified (GM) cotton and to identify the most suited bee species for this task, according to their abundance and geographical distribution. Field inventories of bee on cotton flowers were performed in the states of Bahia and Mato Grosso, and in Distrito Federal, Brazil. During a 344 hour sampling, 3,470 bees from 74 species were recovered, at eight sites. Apis mellifera dominated the bee assemblages at all sites. Sampling at two sites that received no insecticide application was sufficient to identify the three most common and geographically widespread wild species: Paratrigona lineata , Melissoptila cnecomola and Trigona spinipes , which could be useful indicators of pollination services in the ERA. Indirect ordination of common wild species revealed that insecticides reduced the number of native bee species and that interannual variation in bee assemblages may be low. Accumulation curves of rare bee species did not saturate, as expected in tropical and megadiverse regions. Species?based approaches are limited to analyze negative impacts of GM cotton on pollinator biological diversity. The accumulation rate of rare bee species, however, may be useful for evaluating possible negative effects of GM cotton on bee diversity. |
Palavras-Chave: |
Abelha silvestre; Avaliação de risco ambiental; Biological diversity; Cultura trangênica; Diversidade biológica; Ecological risk assessment; Pollination services; Serviços de polinização; Transgenic crops; Wild bees. |
Thesagro: |
Gossypium Hirsutum. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/108791/1/Selection-of-bee-species.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/112379/1/19095-88623-2-PB.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/108699/1/Selection-of-bee-species.pdf
|
Marc: |
LEADER 02435naa a2200349 a 4500 001 1995463 005 2015-01-23 008 2014 bl uuuu u00u1 u #d 100 1 $aPIRES, C. S. S. 245 $aSelection of bee species for environmental risk assessment of GM cotton in the brazilian Cerrado. 260 $c2014 520 $aThe objective of this work was to list potential candidate bee species for environmental risk assessment (ERA) of genetically modified (GM) cotton and to identify the most suited bee species for this task, according to their abundance and geographical distribution. Field inventories of bee on cotton flowers were performed in the states of Bahia and Mato Grosso, and in Distrito Federal, Brazil. During a 344 hour sampling, 3,470 bees from 74 species were recovered, at eight sites. Apis mellifera dominated the bee assemblages at all sites. Sampling at two sites that received no insecticide application was sufficient to identify the three most common and geographically widespread wild species: Paratrigona lineata , Melissoptila cnecomola and Trigona spinipes , which could be useful indicators of pollination services in the ERA. Indirect ordination of common wild species revealed that insecticides reduced the number of native bee species and that interannual variation in bee assemblages may be low. Accumulation curves of rare bee species did not saturate, as expected in tropical and megadiverse regions. Species?based approaches are limited to analyze negative impacts of GM cotton on pollinator biological diversity. The accumulation rate of rare bee species, however, may be useful for evaluating possible negative effects of GM cotton on bee diversity. 650 $aGossypium Hirsutum 653 $aAbelha silvestre 653 $aAvaliação de risco ambiental 653 $aBiological diversity 653 $aCultura trangênica 653 $aDiversidade biológica 653 $aEcological risk assessment 653 $aPollination services 653 $aServiços de polinização 653 $aTransgenic crops 653 $aWild bees 700 1 $aSILVEIRA, F. A. 700 1 $aCARDOSO, C. F. 700 1 $aSUJII, E. R. 700 1 $aPAULA, D. P. 700 1 $aFONTES, E. M. G. 700 1 $aSILVA, J. P. da 700 1 $aRODRIGUES, S. M. M. 700 1 $aANDOW, D. A. 773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 49, n. 8, p. 573-586, ago. 2014.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Recursos Genéticos e Biotecnologia (CENARGEN) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|