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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
17/01/2018 |
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Data da última atualização: |
27/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MUNK, M.; BRANDAO, H. de M.; YEPREMIAN, C.; LADEIRA, L. O.; RAPOSO, N. R. B.; BRAYNER, R. |
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Afiliação: |
Michele Munk, UFJF; HUMBERTO DE MELLO BRANDAO, CNPGL; Claude Yéprémian, National Museum of Natural History, Paris, France; Luiz O. Ladeira, UFMG; Nádia R. B. Raposo, UFJF; Roberta Brayner, University of Paris Diderot. |
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Título: |
Effect of Multi-walled Carbon Nanotubes on Metabolism and Morphology of Filamentous Green Microalgae. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Archives of Environmental Contamination and Toxicology, v. 73 n. 4, p. 649-658, 2017. |
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DOI: |
10.1007/s00244-017-0429-2 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract Multi-walled carbon nanotubes (MWCNTs) have potential applications in the industrial, agricultural, pharmaceutical, medical, and environmental remediation fields. However, many uncertainties exist regarding the environmental implications of engineered nanomaterials. This study examined the effect of the MWCNTs on metabolic status and morphology of filamentous green microalgae Klebsormidium flaccidum. Appropriate concentrations of MWCNT (1, 50, and 100 μg mL-1) were added to a microalgal culture in the exponential growth phase and incubated for 24, 48, 72, and 96 h. Exposure to MWCNT led to reductions in algal growth after 48 h and decreased on cell viability for all experimental endpoints except for 1 µg mL-1 at 24 h and 100 µg mL-1 after 72 h. At 100 µg mL-1, MWCNTs induced reactive oxygen species (ROS) production and had an effect on intracellular adenosine triphosphate (ATP) content depending on concentration and time. No photosynthetic activity variation was observed. Observations by scanning transmission electron microscopy showed cell damage. In conclusion, we have demonstrated that exposure to MWCNTs affects cell metabolism and microalgal cell morphology. To our best knowledge, this is the first case in which MWCNTs exhibit adverse effects on filamentous green microalgae K. flaccidum. These results contribute to elucidate the mechanism of MWCNT nanotoxicity in the bioindicator organism of terrestrial and freshwater habitats. |
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Palavras-Chave: |
MWCNT; ROS. |
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Thesaurus Nal: |
carbon nanotubes. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02178naa a2200229 a 4500
001 2085649
005 2023-01-27
008 2017 bl uuuu u00u1 u #d
024 7 $a10.1007/s00244-017-0429-2$2DOI
100 1 $aMUNK, M.
245 $aEffect of Multi-walled Carbon Nanotubes on Metabolism and Morphology of Filamentous Green Microalgae.$h[electronic resource]
260 $c2017
520 $aAbstract Multi-walled carbon nanotubes (MWCNTs) have potential applications in the industrial, agricultural, pharmaceutical, medical, and environmental remediation fields. However, many uncertainties exist regarding the environmental implications of engineered nanomaterials. This study examined the effect of the MWCNTs on metabolic status and morphology of filamentous green microalgae Klebsormidium flaccidum. Appropriate concentrations of MWCNT (1, 50, and 100 μg mL-1) were added to a microalgal culture in the exponential growth phase and incubated for 24, 48, 72, and 96 h. Exposure to MWCNT led to reductions in algal growth after 48 h and decreased on cell viability for all experimental endpoints except for 1 µg mL-1 at 24 h and 100 µg mL-1 after 72 h. At 100 µg mL-1, MWCNTs induced reactive oxygen species (ROS) production and had an effect on intracellular adenosine triphosphate (ATP) content depending on concentration and time. No photosynthetic activity variation was observed. Observations by scanning transmission electron microscopy showed cell damage. In conclusion, we have demonstrated that exposure to MWCNTs affects cell metabolism and microalgal cell morphology. To our best knowledge, this is the first case in which MWCNTs exhibit adverse effects on filamentous green microalgae K. flaccidum. These results contribute to elucidate the mechanism of MWCNT nanotoxicity in the bioindicator organism of terrestrial and freshwater habitats.
650 $acarbon nanotubes
653 $aMWCNT
653 $aROS
700 1 $aBRANDAO, H. de M.
700 1 $aYEPREMIAN, C.
700 1 $aLADEIRA, L. O.
700 1 $aRAPOSO, N. R. B.
700 1 $aBRAYNER, R.
773 $tArchives of Environmental Contamination and Toxicology$gv. 73 n. 4, p. 649-658, 2017.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
04/11/2010 |
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Data da última atualização: |
28/03/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SILVA, T. A L.; FONTENELE, R. S.; FARIA, J. C.; ARAGAO, F. J. L.; RIBEIRO, S. G. |
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Afiliação: |
T. A. L. SILVA; R. S. FONTENELE; JOSIAS CORREA DE FARIA, CNPAF; FRANCISCO JOSE LIMA ARAGAO, CENARGEN; SIMONE DA GRACA RIBEIRO, CENARGEN. |
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Título: |
Diversidade genética de begomovirus infectando feijoeiro no Brasil. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Tropical Plant Pathology, v. 35, p. S184, ago. 2010. Suplemento, ref. 05.087. Edição dos resumos do XLIII Congresso Brasileiro de Fitopatologia, Cuiabá, ago. 2010. |
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Idioma: |
Português |
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Thesagro: |
Bemisia tabaci; Feijão; Mosaico dourado; Phaseolus vulgaris. |
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Thesaurus NAL: |
Begomovirus. |
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Categoria do assunto: |
H Saúde e Patologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/23465/1/CBF10.pdf
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Marc: |
LEADER 00726nam a2200205 a 4500
001 1866018
005 2023-03-28
008 2010 bl uuuu u00u1 u #d
100 1 $aSILVA, T. A L.
245 $aDiversidade genética de begomovirus infectando feijoeiro no Brasil.$h[electronic resource]
260 $aTropical Plant Pathology, v. 35, p. S184, ago. 2010. Suplemento, ref. 05.087. Edição dos resumos do XLIII Congresso Brasileiro de Fitopatologia, Cuiabá, ago. 2010.$c2010
650 $aBegomovirus
650 $aBemisia tabaci
650 $aFeijão
650 $aMosaico dourado
650 $aPhaseolus vulgaris
700 1 $aFONTENELE, R. S.
700 1 $aFARIA, J. C.
700 1 $aARAGAO, F. J. L.
700 1 $aRIBEIRO, S. G.
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