Using single-species and algal communities to determine long-term adverse effects of silver nanoparticles on freshwater phytoplankton

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dc.contributor.authorCortés Téllez, Alondra A.
dc.contributor.authorD'Ors De Blas, Ana
dc.contributor.authorSánchez Fortún, A.
dc.contributor.authorFajardo, C.
dc.contributor.authorMengs, G.
dc.contributor.authorNande Barbeitos, María Del Mar
dc.contributor.authorMartín, C.
dc.contributor.authorCosta Buitrago, Gonzalo Antonio
dc.contributor.authorMartín, M.
dc.contributor.authorBartolomé Camacho, María del Carmen
dc.contributor.authorSánchez-Fortún Rodríguez, Sebastián
dc.contributor.editorBarceló, Damià
dc.date.accessioned2024-04-25T17:55:41Z
dc.date.available2024-04-25T17:55:41Z
dc.date.issued2024-04-18
dc.descriptionCRediT authorship contribution statement: A.A. Cortes-Tellez: Writing – original draft, Visualization, Investigation, Formal analysis. A. D’ors: Visualization, Investigation, Formal analysis. C. Fajardo: Visualization, Supervision, Investigation. G. Mengs: Software, Investigation. M. Nande: Software, Investigation. C. Martín: Visualization, Investigation. G. Costa: Visualization, Investigation. M. Martín: Visualization, Supervision, Investigation, Funding acquisition. M.C. Bartolome-Camacho: Writing – original draft, Supervision, Investigation. S. Sanchez-Fortún: Writing – original draft, Investigation, Formal analysis.
dc.description.abstractThe physical and chemical properties of silver nanoparticles (AgNPs) have led to their increasing use in various fields such as medicine, food, and industry. Evidence has proven that AgNPs cause adverse effects in aquatic ecosystems, especially when the release of Ag is prolonged in time. Several studies have shown short-term adverse effects of AgNPs on freshwater phytoplankton, but few studies have analysed the impact of long-term exposures on these populations. Our studies were carried out to assess the effects of AgNPs on growth rate, photosynthesis activity, and reactive oxygen species (ROS) generation on the freshwater green algae Scenedesmus armatus and the cyanobacteria Microcystis aeruginosa, and additionally on microcystin (MC-LR) generation from these cyanobacteria. The tests were conducted both in single-species cultures and in phytoplanktonic communities exposed to 1 ngL-1 AgNPs for 28 days. The results showed that cell growth rate of both single-species cultures decreased significantly at the beginning and progressively reached control-like values at 28 days post-exposure. This effect was similar for the community-cultured cyanobacteria, but not for the green algae, which maintained a sustained decrease in growth rate. While gross photosynthesis (Pg) increased in both strains exposed in single cultures, dark respiration (R) and net photosynthesis (Pn) decreased in S. armatus and M. aeruginosa, respectively. These effects were mitigated when both strains were exposed under community culture conditions. Similarly, the ROS generation shown by both strains exposed in single-species cultures was mitigated when exposure occurred in community cultures. MC-LR production and release were significantly decreased in both single-species and community exposures. These results can supply helpful information to further investigate the potential risks of AgNPs and ultimately help policymakers make better-informed decisions about their utilization for environmental restoration.
dc.description.departmentSección Deptal. de Fisiología (Veterinaria)
dc.description.departmentDepto. de Farmacología y Toxicología
dc.description.departmentDepto. de Bioquímica y Biología Molecular
dc.description.facultyFac. de Veterinaria
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Ciencia, Innovación y Universidades (España)
dc.description.statuspub
dc.identifier.doi10.1016/j.scitotenv.2024.172500
dc.identifier.essn1879-1026
dc.identifier.issn0048-9697
dc.identifier.officialurlhttps://doi.org/10.1016/j.scitotenv.2024.172500
dc.identifier.urihttps://hdl.handle.net/20.500.14352/103539
dc.issue.number172500
dc.journal.titleScience of The Total Environment
dc.language.isoeng
dc.publisherElsevier
dc.relation.projectIDinfo:eu-repo/grantAgreement/MCIU/CTM2017-82424-P
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internationalen
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.cdu636.09:612
dc.subject.keywordAgNP
dc.subject.keywordFreshwater phytoplankton
dc.subject.keywordGrowth cell rate
dc.subject.keywordPhotosynthesis activity
dc.subject.keywordROS
dc.subject.keywordMicrocystin
dc.subject.ucmFisiología veterinaria
dc.subject.unesco3109.09 Fisiología
dc.titleUsing single-species and algal communities to determine long-term adverse effects of silver nanoparticles on freshwater phytoplankton
dc.typejournal article
dc.type.hasVersionVoR
dc.volume.number928
dspace.entity.typePublication
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relation.isAuthorOfPublication242709fa-ff35-4b05-a411-a8e2292841fa
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relation.isAuthorOfPublication.latestForDiscovery0df45535-59cb-4207-8db9-f4ca81b3d52c
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