Harmful effects of the semiconductor copper tungstate (CuWO4) on multiple photosynthetic parameters of the green microalga Raphidocelis subcapitata

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.contributorEscola Tècnica Superior d'Enginyeria Química-
Autor(es): dc.contributorCatholic University of Valencia San Vicente Mártir (UCV)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-
Autor(es): dc.contributorUniversidade Federal de Alfenas (UNIFAL-MG)-
Autor(es): dc.creatorGebara, Renan Castelhano-
Autor(es): dc.creatorde Abreu, Cínthia Bruno-
Autor(es): dc.creatorRocha, Giseli Swerts-
Autor(es): dc.creatorMansano, Adrislaine da Silva-
Autor(es): dc.creatorAssis, Marcelo-
Autor(es): dc.creatorMoreira, Ailton José-
Autor(es): dc.creatorSantos, Mykaelli Andrade-
Autor(es): dc.creatorPereira, Thalles Maranesi-
Autor(es): dc.creatorVirtuoso, Luciano Sindra-
Autor(es): dc.creatorMelão, Maria da Graça Gama-
Autor(es): dc.creatorLongo, Elson-
Data de aceite: dc.date.accessioned2025-08-21T23:28:38Z-
Data de disponibilização: dc.date.available2025-08-21T23:28:38Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2025-01-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.aquatox.2025.107245-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/298033-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/298033-
Descrição: dc.descriptionThe semiconductor copper tungstate (CuWO4) may end up in aquatic ecosystems since it has the potential for water decontamination. The toxic effects of CuWO4 are totally unknown for eukaryotic organisms. In view of this, we aimed to evaluate the toxicity of CuWO4 particles (size of 161.5 nm) on the cosmopolitan green microalga Raphidocelis subcapitata (a standardized test-organism for ecotoxicological assays), analyzing the growth and multiple photosynthetic parameters obtained by pulse amplitude modulated (PAM) fluorometry. At 1.2 mg L-1, the growth was affected, and there was an increase in reactive oxygen species (ROS) after 72 h The effective efficiency (ɸM’) of photosystem II (PSII) was affected at 13.1 mg L-1, while the efficiency of the oxygen-evolving complex (OEC), responsible for the water-splitting process, decayed at 5.6 mg L-1. According to quenching parameters, energy allocated to photosynthetic processes (qP) decreased, indicating a malfunctioning of the PSII. We also observed a 50 % increase in the non-regulated energy dissipation by heat and fluorescence (Y(NO)), and a 50 % decrease in the regulated energy dissipation (NPQ), suggesting difficulties for algae to cope with light. Rapid light curves (RLC) were the second most sensitive parameter, as we observed a decay of the relative maximum electron transport rate (rETRmax) at 2.8 mg L-1. Therefore, since the microalga R. subcapitata was affected by concentrations up to 1.2 mg L-1 (0.01 mg L-1 dissolved Cu), it is important to evaluate carefully the use of CuWO4 to decontaminate natural waters, considering the protection of the aquatic biota.-
Descrição: dc.descriptionCenter for the Development of Functional Materials (CDMF) Universidade Federal de São Carlos (UFSCar) Rodovia Washington Luís, Km 235, SP-
Descrição: dc.descriptionUniversitat Rovira i Virgili Escola Tècnica Superior d'Enginyeria Química Departament d'Enginyeria Química, Av. Països Catalans, 26, Tarragona-
Descrição: dc.descriptionDepartment of Hydrobiology (DHb) Universidade Federal de São Carlos (UFSCar), Rodovia Washington Luís, Km 235, SP-
Descrição: dc.descriptionBiomaterials and Bioengineering Lab Translational Research Centre San Alberto Magno Catholic University of Valencia San Vicente Mártir (UCV)-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry, SP-
Descrição: dc.descriptionEmbrapa Pecuária Sudeste, P.O. Box 339, SP-
Descrição: dc.descriptionChemistry Institute Universidade Federal de Alfenas (UNIFAL-MG), Gabriel Monteiro da Silva, 700, Centro, MG-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry, SP-
Idioma: dc.languageen-
Relação: dc.relationAquatic Toxicology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectChlorophyceae-
Palavras-chave: dc.subjectCopper-
Palavras-chave: dc.subjectEcotoxicology-
Palavras-chave: dc.subjectNanoparticle-
Palavras-chave: dc.subjectPhysiology-
Palavras-chave: dc.subjectToxicity-
Título: dc.titleHarmful effects of the semiconductor copper tungstate (CuWO4) on multiple photosynthetic parameters of the green microalga Raphidocelis subcapitata-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.