Atenção: Todas as denúncias são sigilosas e sua identidade será preservada.
Os campos nome e e-mail são de preenchimento opcional
Metadados | Descrição | Idioma |
---|---|---|
Autor(es): dc.contributor | Universidade Estadual de Mato Grosso do Sul (UEMS) | - |
Autor(es): dc.contributor | Universidade Estadual Paulista (Unesp) | - |
Autor(es): dc.contributor | Universidade de São Paulo (USP) | - |
Autor(es): dc.contributor | Universidade Federal de Mato Grosso do Sul (UFMS) | - |
Autor(es): dc.contributor | University of Essex Colchester | - |
Autor(es): dc.creator | Pontes, Montcharles S. | - |
Autor(es): dc.creator | Antunes, Débora R. [UNESP] | - |
Autor(es): dc.creator | Oliveira, Ivan P. | - |
Autor(es): dc.creator | Forini, Mariana M. L. [UNESP] | - |
Autor(es): dc.creator | Santos, Jaqueline S. | - |
Autor(es): dc.creator | Arruda, Gilberto J. | - |
Autor(es): dc.creator | Caires, Anderson R. L. | - |
Autor(es): dc.creator | Santiago, Etenaldo F. | - |
Autor(es): dc.creator | Grillo, Renato [UNESP] | - |
Data de aceite: dc.date.accessioned | 2022-02-22T00:46:59Z | - |
Data de disponibilização: dc.date.available | 2022-02-22T00:46:59Z | - |
Data de envio: dc.date.issued | 2021-06-25 | - |
Data de envio: dc.date.issued | 2021-06-25 | - |
Data de envio: dc.date.issued | 2021-05-21 | - |
Fonte completa do material: dc.identifier | http://dx.doi.org/10.1039/d0en01128b | - |
Fonte completa do material: dc.identifier | http://hdl.handle.net/11449/206396 | - |
Fonte: dc.identifier.uri | http://educapes.capes.gov.br/handle/11449/206396 | - |
Descrição: dc.description | Despite the wide range of possible applications of nanopesticides, the mechanisms involved in their enhanced action remain largely unknown. Understanding the interaction between nanopesticides and plants is crucial for evaluating their potential safety application. Using an experimental and theoretical approach, this study aimed to investigate the target effect of paraquat-loaded chitosan/tripolyphosphate nanoparticles (ca. 200 nm) on photosystem I (PSI). Electrochemical analysis showed distinct electroactivity behaviour between the encapsulated and non-encapsulated herbicide. The amount of lipid peroxidation, photooxidizable P700 reaction centre content, and NADPH/NADP+ ratio levels were significantly decreased in spinach leaf tissue exposed to the nanoherbicide compared to those with the non-encapsulated herbicide. The data also revealed that the nanoformulation might promote oxidative stress based on changes observed in antioxidant enzymes. Also, molecular docking results showed a preferential disposition of the herbicide paraquat and paraquat-tripolyphosphate complex (TPP:PQ) in the ligand domain close to FAD and Glu312. Due to the inhibitor's strategic position in the catalytic pocket, a model of electron-capture is proposed, where the herbicide disturbs the redox process NADP+ ⇌ NADPH by capturing electrons to reduce itself. Finally, our findings provide important insights where the redox behaviour of paraquat may play a key role in the enhanced efficiency of nanoherbicides to the target binding site. | - |
Descrição: dc.description | Plant Resources Study Group Natural Resources Program Center for Natural Resources Study (CERNA) Mato Grosso Do sul State University (UEMS) | - |
Descrição: dc.description | São Paulo State University (UNESP) Department of Physics and Chemistry Faculty of Engineering | - |
Descrição: dc.description | Department of Pharmacology Institute of Biomedical Sciences University of São Paulo (USP) | - |
Descrição: dc.description | Optics and Photonics Group Institute of Physics Federal University of Mato Grosso Do sul (UFMS) | - |
Descrição: dc.description | School of Life Science University of Essex Colchester | - |
Descrição: dc.description | São Paulo State University (UNESP) Department of Physics and Chemistry Faculty of Engineering | - |
Formato: dc.format | 1336-1351 | - |
Idioma: dc.language | en | - |
Relação: dc.relation | Environmental Science: Nano | - |
???dc.source???: dc.source | Scopus | - |
Título: dc.title | Chitosan/tripolyphosphate nanoformulation carrying paraquat: Insights on its enhanced herbicidal activity | - |
Tipo de arquivo: dc.type | livro digital | - |
Aparece nas coleções: | Repositório Institucional - Unesp |
O Portal eduCAPES é oferecido ao usuário, condicionado à aceitação dos termos, condições e avisos contidos aqui e sem modificações. A CAPES poderá modificar o conteúdo ou formato deste site ou acabar com a sua operação ou suas ferramentas a seu critério único e sem aviso prévio. Ao acessar este portal, você, usuário pessoa física ou jurídica, se declara compreender e aceitar as condições aqui estabelecidas, da seguinte forma: