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Registro Completo |
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
06/08/1992 |
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Data da última atualização: |
06/08/1992 |
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Autoria: |
BONUMA, P. R.; CAMPOS, A. E.; SOUZA, F. C. A. |
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Afiliação: |
1-2 Secretaria da Agricultura.; 3 FECOTRIGO. |
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Título: |
Relação dos cultivares do 'bloco de cruzamentos' resistentes a P. graminis tritici no verão de 1969/70. |
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Ano de publicação: |
1970 |
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Fonte/Imprenta: |
[S.l.: s.n., 1970]. |
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Páginas: |
6 p. |
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Idioma: |
Português |
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Notas: |
Trabalho apresentado na II Reunião Anual Conjunta de Pesquisa de Trigo, Porto Alegre, 1970. |
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Thesagro: |
Doença; Ferrugem do Colmo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00559nam a2200169 a 4500
001 1843402
005 1992-08-06
008 1970 bl uuuu u0uu1 u #d
100 1 $aBONUMA, P. R.
245 $aRelação dos cultivares do 'bloco de cruzamentos' resistentes a P. graminis tritici no verão de 1969/70.
260 $a[S.l.: s.n.$c1970
300 $a6 p.
500 $aTrabalho apresentado na II Reunião Anual Conjunta de Pesquisa de Trigo, Porto Alegre, 1970.
650 $aDoença
650 $aFerrugem do Colmo
700 1 $aCAMPOS, A. E.
700 1 $aSOUZA, F. C. A.
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Registro original: |
Embrapa Trigo (CNPT) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
08/09/2023 |
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Data da última atualização: |
08/09/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
CASTANHA, R. F.; PEREIRA, A. do E. S.; VILLARREAL, G. P. U.; VALLIM, J. H.; PERTRINI, F. S.; JONSSON, C. M.; FRACETO, L. F.; CASTRO, V. L. S. S. de. |
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Afiliação: |
RODRIGO FERNANDES CASTANHA; ANDERSON DO ESPÍRITO SANTO PEREIRA, UNIVERSIDADE ESTADUAL PAULISTA; GABRIELA PATRICIA UNIGARRO VILLARREAL, UNIVERSIDADE ESTADUAL PAULISTA; JOSÉ HENRIQUE VALLIM; FERNANDA SANA PERTRINI, UNIVERSIDADE ESTADUAL PAULISTA; CLAUDIO MARTÍN JONSSON; LEONARDO FERNANDES FRACETO, UNIVERSIDADE ESTADUAL PAULISTA; VERA LÚCIA SCHERHOLZ SALGADO DE CASTRO. |
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Título: |
Ecotoxicity studies of two atrazine nanoformulations: from the evaluation of stability in media to the effects on aquatic organisms. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Environmental Pollution, v. 335, p. 122235, 2023. |
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ISSN: |
0269-7491 |
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DOI: |
https://doi.org/10.1016/j.envpol.2023.122235 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: In the field of agriculture, nanopesticides have been developed as an alternative to the conventional pesticides, being more efficient for pest control. However, before their widespread application it is essential to evaluate their safe application and no environmental impacts. In this paper, we evaluated the toxicological effects of two kinds of atrazine nanoformulations (ATZ NPs) in different biological models (Raphidocelis subcapitata, Danio rerio, Lemna minor, Artemia salina, Lactuca sativa and Daphnia magna) and compared the results with nanoparticle stability over time and the presence of natural organic matter (NOM). The systems showed different characteristics for Zein (ATZ NPZ) (184 ± 2 nm with a PDI of 0.28 ± 0.04 and zeta potential of (30.4 ± 0.05 mV) and poly(epsilon-caprolactone (ATZ PCL) (192 ± 3 nm, polydispersity (PDI) of 0.28 ± 0.28 and zeta potential of −18.8 ± 1.2 mV) nanoparticles. The results showed that there is a correlation between nanoparticles stability and the presence of NOM in the medium and Environmental Concentrations (EC) values. The stability loss or an increase in nanoparticle size result in low toxicity for R. subcapitata and L. minor. For D. magna and D. rerio, the presence of NOM in the medium reduces the ecotoxic effects for ATZ NPZ nanoparticles, but not for ATZ NPs, showing that the nanoparticles characteristics and their interaction with NOM can modulate toxic effects. Nanoparticle stability throughout the evaluation must be considered and become an integral part of toxicity protocol guidelines for nanopesticides, to ensure test quality and authentic results regarding nanopesticide effects in target and non-target organisms. MenosAbstract: In the field of agriculture, nanopesticides have been developed as an alternative to the conventional pesticides, being more efficient for pest control. However, before their widespread application it is essential to evaluate their safe application and no environmental impacts. In this paper, we evaluated the toxicological effects of two kinds of atrazine nanoformulations (ATZ NPs) in different biological models (Raphidocelis subcapitata, Danio rerio, Lemna minor, Artemia salina, Lactuca sativa and Daphnia magna) and compared the results with nanoparticle stability over time and the presence of natural organic matter (NOM). The systems showed different characteristics for Zein (ATZ NPZ) (184 ± 2 nm with a PDI of 0.28 ± 0.04 and zeta potential of (30.4 ± 0.05 mV) and poly(epsilon-caprolactone (ATZ PCL) (192 ± 3 nm, polydispersity (PDI) of 0.28 ± 0.28 and zeta potential of −18.8 ± 1.2 mV) nanoparticles. The results showed that there is a correlation between nanoparticles stability and the presence of NOM in the medium and Environmental Concentrations (EC) values. The stability loss or an increase in nanoparticle size result in low toxicity for R. subcapitata and L. minor. For D. magna and D. rerio, the presence of NOM in the medium reduces the ecotoxic effects for ATZ NPZ nanoparticles, but not for ATZ NPs, showing that the nanoparticles characteristics and their interaction with NOM can modulate toxic effects. Nanoparticle stability throughout the evaluation m... Mostrar Tudo |
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Palavras-Chave: |
Ecotoxicological assay; Nanoherbicide. |
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Thesagro: |
Herbicida; Impacto Ambiental; Toxidez. |
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Thesaurus NAL: |
Aquatic environment; Ecotoxicology; Herbicides. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02720naa a2200325 a 4500
001 2156515
005 2023-09-08
008 2023 bl uuuu u00u1 u #d
022 $a0269-7491
024 7 $ahttps://doi.org/10.1016/j.envpol.2023.122235$2DOI
100 1 $aCASTANHA, R. F.
245 $aEcotoxicity studies of two atrazine nanoformulations$bfrom the evaluation of stability in media to the effects on aquatic organisms.$h[electronic resource]
260 $c2023
520 $aAbstract: In the field of agriculture, nanopesticides have been developed as an alternative to the conventional pesticides, being more efficient for pest control. However, before their widespread application it is essential to evaluate their safe application and no environmental impacts. In this paper, we evaluated the toxicological effects of two kinds of atrazine nanoformulations (ATZ NPs) in different biological models (Raphidocelis subcapitata, Danio rerio, Lemna minor, Artemia salina, Lactuca sativa and Daphnia magna) and compared the results with nanoparticle stability over time and the presence of natural organic matter (NOM). The systems showed different characteristics for Zein (ATZ NPZ) (184 ± 2 nm with a PDI of 0.28 ± 0.04 and zeta potential of (30.4 ± 0.05 mV) and poly(epsilon-caprolactone (ATZ PCL) (192 ± 3 nm, polydispersity (PDI) of 0.28 ± 0.28 and zeta potential of −18.8 ± 1.2 mV) nanoparticles. The results showed that there is a correlation between nanoparticles stability and the presence of NOM in the medium and Environmental Concentrations (EC) values. The stability loss or an increase in nanoparticle size result in low toxicity for R. subcapitata and L. minor. For D. magna and D. rerio, the presence of NOM in the medium reduces the ecotoxic effects for ATZ NPZ nanoparticles, but not for ATZ NPs, showing that the nanoparticles characteristics and their interaction with NOM can modulate toxic effects. Nanoparticle stability throughout the evaluation must be considered and become an integral part of toxicity protocol guidelines for nanopesticides, to ensure test quality and authentic results regarding nanopesticide effects in target and non-target organisms.
650 $aAquatic environment
650 $aEcotoxicology
650 $aHerbicides
650 $aHerbicida
650 $aImpacto Ambiental
650 $aToxidez
653 $aEcotoxicological assay
653 $aNanoherbicide
700 1 $aPEREIRA, A. do E. S.
700 1 $aVILLARREAL, G. P. U.
700 1 $aVALLIM, J. H.
700 1 $aPERTRINI, F. S.
700 1 $aJONSSON, C. M.
700 1 $aFRACETO, L. F.
700 1 $aCASTRO, V. L. S. S. de
773 $tEnvironmental Pollution$gv. 335, p. 122235, 2023.
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