Influence of microplastics on the toxicity of chlorpyrifos and mercury on the marine microalgae Rhodomonas lens

The growing use of plastics, including microplastics (MPs), has enhanced their potential release into aquatic environments, where microalgae represent the basis of food webs. Due to their physicochemical properties, MPs may act as carriers of organic and inorganic pollutants. The present study aimed...

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Detalles Bibliográficos
Autores: Pinto, E., Paredes, E., Bellas, Juan
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/309589
Acceso en línea:http://hdl.handle.net/10261/309589
Access Level:acceso abierto
Palabra clave:Microplastic
Mercury
Chlorpyrifos
Microalgae
Toxicity
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spelling Influence of microplastics on the toxicity of chlorpyrifos and mercury on the marine microalgae Rhodomonas lensPinto, E.Paredes, E.Bellas, JuanMicroplasticMercuryChlorpyrifosMicroalgaeToxicityThe growing use of plastics, including microplastics (MPs), has enhanced their potential release into aquatic environments, where microalgae represent the basis of food webs. Due to their physicochemical properties, MPs may act as carriers of organic and inorganic pollutants. The present study aimed to determine the toxicity of polyethylene MPs (plain and oxidized) and the model pollutants chlorpyrifos (CPF) and mercury (Hg) on the red microalgae Rhodomonas lens, to contribute to the understanding of the effects of MPs and associated pollutants on marine ecosystems, including the role of MPs as vectors of potentially harmful pollutants to marine food webs. R. lens cultures were exposed to MPs (1–1000 μg/L; 25–24,750 particles/mL), CPF (1–4900 μg/L), Hg (1–500 μg/L), and to CPF- and Hg-loaded MPs, for 96 h. Average specific growth rate (ASGR, day), cellular viability and pigment concentration (chlorophyll a, c2 and carotenoids) were measured at 48 and 96 h. No significant effects were observed on the growth pattern of the microalgae after 96-h exposure to plain and oxidized MPs. However, a significant increase in cell concentration was detected after 48-h exposure to plain MPs. A decrease of the ASGR was noticed after exposure to CPF, Hg and to CPF/Hg-loaded MPs, whereas viability was affected by exposure to MPs, CPF and Hg, alone and in combination. Chlorophyll a and c2 significantly decreased when microalgae were exposed to plain MPs and CPF, while both pigments significantly increased when exposed to CPF-loaded MPs. Similarly, chlorophyll and carotenoids content significantly decreased after exposure to Hg, whereas a significant increase in chlorophyll a was observed after 48-h exposure to Hg-loaded MPs, at the higher tested concentration. Overall, the presence of MPs modulates the toxicity of Hg and CPF to these microalgae, decreasing the toxic effects on R. lens, probably due to a lower bioavailability of the contaminants.We acknowledge Arantxa Martínez, Pedro Pousa and Dolores Pampillón for their technical support and Dr. Diego Rial for his guidance in the optimization of microalgae viability determination. This study has been completed within the framework of the PLASMED Project. Funding for the development of the predoctoral stage was provided by Xunta de Galicia (Spain) under the European social fund for Galicia (2014–2020) for 2020. Universidade de Vigo/CISUG provides funding for open access charge.ElsevierXunta de GaliciaUniversidad de VigoConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2023202320232023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/309589reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.scitotenv.2022.159605Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3095892026-05-22T06:33:51Z
dc.title.none.fl_str_mv Influence of microplastics on the toxicity of chlorpyrifos and mercury on the marine microalgae Rhodomonas lens
title Influence of microplastics on the toxicity of chlorpyrifos and mercury on the marine microalgae Rhodomonas lens
spellingShingle Influence of microplastics on the toxicity of chlorpyrifos and mercury on the marine microalgae Rhodomonas lens
Pinto, E.
Microplastic
Mercury
Chlorpyrifos
Microalgae
Toxicity
title_short Influence of microplastics on the toxicity of chlorpyrifos and mercury on the marine microalgae Rhodomonas lens
title_full Influence of microplastics on the toxicity of chlorpyrifos and mercury on the marine microalgae Rhodomonas lens
title_fullStr Influence of microplastics on the toxicity of chlorpyrifos and mercury on the marine microalgae Rhodomonas lens
title_full_unstemmed Influence of microplastics on the toxicity of chlorpyrifos and mercury on the marine microalgae Rhodomonas lens
title_sort Influence of microplastics on the toxicity of chlorpyrifos and mercury on the marine microalgae Rhodomonas lens
dc.creator.none.fl_str_mv Pinto, E.
Paredes, E.
Bellas, Juan
author Pinto, E.
author_facet Pinto, E.
Paredes, E.
Bellas, Juan
author_role author
author2 Paredes, E.
Bellas, Juan
author2_role author
author
dc.contributor.none.fl_str_mv Xunta de Galicia
Universidad de Vigo
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Microplastic
Mercury
Chlorpyrifos
Microalgae
Toxicity
topic Microplastic
Mercury
Chlorpyrifos
Microalgae
Toxicity
description The growing use of plastics, including microplastics (MPs), has enhanced their potential release into aquatic environments, where microalgae represent the basis of food webs. Due to their physicochemical properties, MPs may act as carriers of organic and inorganic pollutants. The present study aimed to determine the toxicity of polyethylene MPs (plain and oxidized) and the model pollutants chlorpyrifos (CPF) and mercury (Hg) on the red microalgae Rhodomonas lens, to contribute to the understanding of the effects of MPs and associated pollutants on marine ecosystems, including the role of MPs as vectors of potentially harmful pollutants to marine food webs. R. lens cultures were exposed to MPs (1–1000 μg/L; 25–24,750 particles/mL), CPF (1–4900 μg/L), Hg (1–500 μg/L), and to CPF- and Hg-loaded MPs, for 96 h. Average specific growth rate (ASGR, day), cellular viability and pigment concentration (chlorophyll a, c2 and carotenoids) were measured at 48 and 96 h. No significant effects were observed on the growth pattern of the microalgae after 96-h exposure to plain and oxidized MPs. However, a significant increase in cell concentration was detected after 48-h exposure to plain MPs. A decrease of the ASGR was noticed after exposure to CPF, Hg and to CPF/Hg-loaded MPs, whereas viability was affected by exposure to MPs, CPF and Hg, alone and in combination. Chlorophyll a and c2 significantly decreased when microalgae were exposed to plain MPs and CPF, while both pigments significantly increased when exposed to CPF-loaded MPs. Similarly, chlorophyll and carotenoids content significantly decreased after exposure to Hg, whereas a significant increase in chlorophyll a was observed after 48-h exposure to Hg-loaded MPs, at the higher tested concentration. Overall, the presence of MPs modulates the toxicity of Hg and CPF to these microalgae, decreasing the toxic effects on R. lens, probably due to a lower bioavailability of the contaminants.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/309589
url http://hdl.handle.net/10261/309589
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.scitotenv.2022.159605
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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