Effects of mycogenic silver nanoparticles on organisms of different trophic levels

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversity of Aveiro-
Autor(es): dc.contributor(SAASP) - Governo do Estado de São Paulo-
Autor(es): dc.contributorMacau University of Science and Technology (MUST)-
Autor(es): dc.contributorMacau Center for Space Exploration and Science-
Autor(es): dc.contributorUniversidade de Lisboa-
Autor(es): dc.creatorAssis da Silva, Carolina-
Autor(es): dc.creatorRibeiro, Bruna Marques-
Autor(es): dc.creatorTrotta, Caterina do Valle-
Autor(es): dc.creatorPerina, Fernando Cesar-
Autor(es): dc.creatorMartins, Roberto-
Autor(es): dc.creatorMoledo de Souza Abessa, Denis-
Autor(es): dc.creatorBarbieri, Edison-
Autor(es): dc.creatorSimões, Marta Filipa-
Autor(es): dc.creatorOttoni, Cristiane Angélica-
Data de aceite: dc.date.accessioned2025-08-21T16:40:38Z-
Data de disponibilização: dc.date.available2025-08-21T16:40:38Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2022-11-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.chemosphere.2022.136540-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/247684-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/247684-
Descrição: dc.descriptionBiogenic silver nanoparticles (AgNPs) are considered a promising alternative to their synthetic versions. However, the environmental impact of such nanomaterials is still scarcely understood. Thus, the present study aims at assessing the antimicrobial action and ecotoxicity of AgNPs biosynthesized by the fungus Aspergillus niger IBCLP20 towards three freshwater organisms: Chlorella vulgaris, Daphnia similis, and Danio rerio (zebrafish). AgNPs IBCLP20 showed antibacterial action against Klebsiella pneumoniae between 5 and 100 μg mL−1, and antifungal action against Trichophyton mentagrophytes in concentrations ranging from 20 to 100 μg mL−1. The cell density of the microalgae Chlorella vulgaris decreased 40% after 96 h of exposure to AgNPs IBCLP20, at the highest concentration analysed (100 μg L−1). The 48 h median lethal concentration for Daphnia similis was estimated as 4.06 μg L−1 (2.29–6.42 μg L−1). AgNPs IBCLP20 and silver nitrate (AgNO3) caused no acute toxicity on adult zebrafish, although they did induce several physiological changes. Mycosynthetized AgNPs caused a significant increase (p < 0.05) in oxygen consumption at the highest concentration studied (75 μg L−1) and an increase in the excretion of ammonia at the lower concentrations, followed by a reduction at the higher concentrations. Such findings are comparable with AgNO3, which increased the oxygen consumption on low exposure concentrations, followed by a decrease at the high tested concentrations, while impairing the excretion of ammonia in all tested concentrations. The present results show that AgNPs IBCLP20 have biocidal properties. Mycogenic AgNPs induce adverse effects on organisms of different trophic levels and understanding their impact is detrimental to developing countermeasures aimed at preventing any negative environmental effects of such novel materials.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionBiosciences Institute São Paulo State University (UNESP), São Vicente/SP-
Descrição: dc.descriptionInstitute of Advanced Sea Studies (IEAMar) São Paulo State University (UNESP), São Vicente-
Descrição: dc.descriptionCentre for Environmental and Marine Studies (CESAM) and Department of Biology University of Aveiro-
Descrição: dc.descriptionInstituto de Pesca Agência Paulista de Tecnologia dos Agronegócios (APTA) Secretaria de Agricultura e Abastecimento (SAASP) - Governo do Estado de São Paulo-
Descrição: dc.descriptionState Key Laboratory of Lunar and Planetary Sciences (SKLPlanets) Macau University of Science and Technology (MUST), Avenida Wai Long, Taipa-
Descrição: dc.descriptionChina National Space Administration (CNSA) Macau Center for Space Exploration and Science, Avenida Wai Long, Taipa-
Descrição: dc.descriptionLinking Landscape Environment Agriculture and Food (LEAF) Instituto Superior de Agronomia Universidade de Lisboa, Tapada da Ajuda-
Descrição: dc.descriptionBiosciences Institute São Paulo State University (UNESP), São Vicente/SP-
Descrição: dc.descriptionInstitute of Advanced Sea Studies (IEAMar) São Paulo State University (UNESP), São Vicente-
Descrição: dc.descriptionFAPESP: 2020/12867-2-
Idioma: dc.languageen-
Relação: dc.relationChemosphere-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAspergillus niger-
Palavras-chave: dc.subjectChlorella vulgaris-
Palavras-chave: dc.subjectDanio rerio.-
Palavras-chave: dc.subjectDaphnia similis-
Palavras-chave: dc.subjectKlebsiella pneumoniae-
Palavras-chave: dc.subjectMycogenic silver nanoparticles-
Título: dc.titleEffects of mycogenic silver nanoparticles on organisms of different trophic levels-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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