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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite; Embrapa Instrumentação. |
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Data corrente: |
02/02/2015 |
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Data da última atualização: |
31/08/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PEREIRA, M. M; MOUTON, L.; YÉPRÉMIAN, C.; COUTÉ, A.; LO, J.; MARCONCINI, J. M.; LADEIRA, L. O.; RAPOSO, N. RB; BRANDÃO, H. M.; BRAYNER, R. |
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Afiliação: |
JOSE MANOEL MARCONCINI, CNPDIA. |
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Título: |
Ecotoxicological effects of carbon nanotubes and cellulose nanofibers in Chlorella vulgaris. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Journal of Nanobiotechnology, Londres, v. 12, n. 15, p. 1-13, 2014. |
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DOI: |
10.1186/1477-3155-12-15 |
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Idioma: |
Inglês |
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Conteúdo: |
Background- MWCNT and CNF are interesting NPs that possess great potential for applications in various fields such as water treatment, reinforcement materials and medical devices. However, the rapid dissemination of NPs can impact the environment and in the human health. Thus, the aim of this study was to evaluate the MWCNT and cotton CNF toxicological effects on freshwater green microalgae Chlorella vulgaris. Results- Exposure to MWCNT and cotton CNF led to reductions on algal growth and cell viability. NP exposure induced reactive oxygen species (ROS) production and a decreased of intracellular ATP levels. Addition of NPs further induced ultrastructural cell damage. MWCNTs penetrate the cell membrane and individual MWCNTs are seen in the cytoplasm while no evidence of cotton CNFs was found inside the cells. Cellular uptake of MWCNT was observed in algae cells cultured in BB medium, but cells cultured in Seine river water did not internalize MWCNTs. Conclusions- Under the conditions tested, such results confirmed that exposure to MWCNTs and to cotton CNFs affects cell viability and algal growth. |
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Palavras-Chave: |
Bioindicador; Nanopartícula; Nanotoxicologia; Uptake. |
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Thesagro: |
Microalga. |
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Categoria do assunto: |
--
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/182230/1/Ecotoxicological-effects-of-carbon-nanotubes-and-cellulose-nanofibers-in-Chlorella-vulgaris..pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/119830/1/Journal-of-Nanobiotechnology-Volume-12-issue-1-2014-doi-10.1186-1477-3155-12-15-Pereira-Michele-M-Mouton-Ludovic-Yepremian-Claude-Coute-Ecotoxicological-effects-of-carbon-nanotubes-and-ce.pdf
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Marc: |
LEADER 01969naa a2200301 a 4500
001 2007487
005 2018-08-31
008 2014 bl uuuu u00u1 u #d
024 7 $a10.1186/1477-3155-12-15$2DOI
100 1 $aPEREIRA, M. M
245 $aEcotoxicological effects of carbon nanotubes and cellulose nanofibers in Chlorella vulgaris.$h[electronic resource]
260 $c2014
520 $aBackground- MWCNT and CNF are interesting NPs that possess great potential for applications in various fields such as water treatment, reinforcement materials and medical devices. However, the rapid dissemination of NPs can impact the environment and in the human health. Thus, the aim of this study was to evaluate the MWCNT and cotton CNF toxicological effects on freshwater green microalgae Chlorella vulgaris. Results- Exposure to MWCNT and cotton CNF led to reductions on algal growth and cell viability. NP exposure induced reactive oxygen species (ROS) production and a decreased of intracellular ATP levels. Addition of NPs further induced ultrastructural cell damage. MWCNTs penetrate the cell membrane and individual MWCNTs are seen in the cytoplasm while no evidence of cotton CNFs was found inside the cells. Cellular uptake of MWCNT was observed in algae cells cultured in BB medium, but cells cultured in Seine river water did not internalize MWCNTs. Conclusions- Under the conditions tested, such results confirmed that exposure to MWCNTs and to cotton CNFs affects cell viability and algal growth.
650 $aMicroalga
653 $aBioindicador
653 $aNanopartícula
653 $aNanotoxicologia
653 $aUptake
700 1 $aMOUTON, L.
700 1 $aYÉPRÉMIAN, C.
700 1 $aCOUTÉ, A.
700 1 $aLO, J.
700 1 $aMARCONCINI, J. M.
700 1 $aLADEIRA, L. O.
700 1 $aRAPOSO, N. RB
700 1 $aBRANDÃO, H. M.
700 1 $aBRAYNER, R.
773 $tJournal of Nanobiotechnology, Londres$gv. 12, n. 15, p. 1-13, 2014.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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Biblioteca |
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Origem |
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Cutter |
Registro |
Volume |
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URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
13/12/2023 |
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Data da última atualização: |
13/12/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 4 |
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Autoria: |
SILVA, M. A.; NASCENTE, A. S.; FRASCA, L. L. de M.; LANNA, A. C.; LACERDA, M. C.; SILVA, C. B. da. |
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Afiliação: |
MARIANA AGUIAR SILVA, UFG; ADRIANO STEPHAN NASCENTE, CNPAF; LAYLLA LUANNA DE MELLO FRASCA, UFG; ANNA CRISTINA LANNA, CNPAF; MABIO CHRISLEY LACERDA, CNPAF; CRISTIANO B. DA SILVA, BS Biosollus, Piracanjuba-GO. |
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Título: |
Biomass, nutrient accumulation, and weed suppression by mix of cover crops. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Revista Caatinga, v. 36, n. 4, p. 757-764, out./dez. 2023. |
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ISSN: |
1983-2125 |
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DOI: |
https://doi.org/10.1590/1983-21252023v36n403rc |
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Idioma: |
Inglês |
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Conteúdo: |
Cover crops, isolated or mixed, provide several benefits to agricultural systems, such as nutrient cycling and weed control. The present study aimed to determine the biomass production and nutrient accumulation of a cover crop mix and its effects on weed suppression (biomass production), in the off-season, in a no-tillage area in the Cerrado region. The experimental design was in randomized blocks with six treatments and eight replications. Treatments comprised five cover crop mixes plus the control treatment (fallow). Mixes of cover crops, cultivated between grain harvests in a no-tillage system in the Cerrado region, efficiently reduced weed shoot biomass in the three evaluation periods, 30, 70, and 210 days after sowing. Additionally, it is concluded that the mixes 5 (Black oats, Buckwheat, Millet, Piatã grass, and Crotalaria ochroleuca) and 4 (C. spectabilis, Buckwheat, Pearl millet, and Crotalaria breviflora) are the best among those evaluated for Cerrado conditions because they produce more biomass in the offseason, due to the greater availability of nutrients to the soil, in addition to providing less biomass of weeds compared to fallow. |
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Palavras-Chave: |
Planta daninha. |
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Thesagro: |
Biomassa; Cerrado; Desenvolvimento Sustentável; Entressafra; Planta de Cobertura. |
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Thesaurus NAL: |
Ground cover plants; Intercropping; Sustainable development. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1159656/1/rev-caatinga-2023.pdf
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Marc: |
LEADER 02091naa a2200313 a 4500
001 2159656
005 2023-12-13
008 2023 bl uuuu u00u1 u #d
022 $a1983-2125
024 7 $ahttps://doi.org/10.1590/1983-21252023v36n403rc$2DOI
100 1 $aSILVA, M. A.
245 $aBiomass, nutrient accumulation, and weed suppression by mix of cover crops.$h[electronic resource]
260 $c2023
520 $aCover crops, isolated or mixed, provide several benefits to agricultural systems, such as nutrient cycling and weed control. The present study aimed to determine the biomass production and nutrient accumulation of a cover crop mix and its effects on weed suppression (biomass production), in the off-season, in a no-tillage area in the Cerrado region. The experimental design was in randomized blocks with six treatments and eight replications. Treatments comprised five cover crop mixes plus the control treatment (fallow). Mixes of cover crops, cultivated between grain harvests in a no-tillage system in the Cerrado region, efficiently reduced weed shoot biomass in the three evaluation periods, 30, 70, and 210 days after sowing. Additionally, it is concluded that the mixes 5 (Black oats, Buckwheat, Millet, Piatã grass, and Crotalaria ochroleuca) and 4 (C. spectabilis, Buckwheat, Pearl millet, and Crotalaria breviflora) are the best among those evaluated for Cerrado conditions because they produce more biomass in the offseason, due to the greater availability of nutrients to the soil, in addition to providing less biomass of weeds compared to fallow.
650 $aGround cover plants
650 $aIntercropping
650 $aSustainable development
650 $aBiomassa
650 $aCerrado
650 $aDesenvolvimento Sustentável
650 $aEntressafra
650 $aPlanta de Cobertura
653 $aPlanta daninha
700 1 $aNASCENTE, A. S.
700 1 $aFRASCA, L. L. de M.
700 1 $aLANNA, A. C.
700 1 $aLACERDA, M. C.
700 1 $aSILVA, C. B. da
773 $tRevista Caatinga$gv. 36, n. 4, p. 757-764, out./dez. 2023.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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Biblioteca |
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Origem |
Tipo/Formato |
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Registro |
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