Direct and indirect effects of silver nanoparticles on freshwater and marine microalgae (Chlamydomonas reinhardtii and Phaeodactylum tricornutum). Sendra, M., Yeste, M., Gatica, J., Moreno-Garrido, I., & Blasco, J. Chemosphere, 179:279-289, 2017. cited By 41
Direct and indirect effects of silver nanoparticles on freshwater and marine microalgae (Chlamydomonas reinhardtii and Phaeodactylum tricornutum) [link]Paper  doi  abstract   bibtex   
The last decade has seen a considerable increase in the use of silver nanoparticles (AgNPs), which are found in many every-day consumer products including textiles, plastics, cosmetics, household sprays and paints. The release of those AgNPs into aquatic environments could be causing ecological damage. In this study we assess the toxicity of AgNPs of different sizes to two species of microalgae, from freshwater and marine environment (Chlamydomonas reinhardtii and Phaeodactylum tricornutum respectively). Dissolution processes affect the form and concentration of AgNPs in both environments. Dissolution of Ag from AgNPs was around 25 times higher in marine water. Nevertheless, dissolution of AgNPs in both culture media seems to be related to the small size and higher surface area of NPs. In marine water, the main chemical species were AgCl2− (53.7%) and AgCl3−2 (45.2%). In contrast, for freshwater, the main chemical species were Ag+ (26.7%) and AgCl− (4.3%). The assessment of toxicological responses, specifically growth, cell size, cell complexity, chlorophyll a, reactive oxygen species, cell membrane damage and effective quantum yield of PSII, corroborated the existence of different toxicity mechanisms for microalgae. Indirect effects, notably dissolved Ag ions, seem to control toxicity to freshwater microalgae, whereas direct effects, notably attachment onto the cell surface and the internalization of AgNPs inside cells, seem to determine toxicity to the marine species studied. This research contributes to knowledge on the role of intrinsic and extrinsic factors in determining the behavior of NPs in different aquatic environments and the interaction with microalgae. © 2017 Elsevier Ltd
@ARTICLE{Sendra2017279,
author={Sendra, M. and Yeste, M.P. and Gatica, J.M. and Moreno-Garrido, I. and Blasco, J.},
title={Direct and indirect effects of silver nanoparticles on freshwater and marine microalgae (Chlamydomonas reinhardtii and Phaeodactylum tricornutum)},
journal={Chemosphere},
year={2017},
volume={179},
pages={279-289},
doi={10.1016/j.chemosphere.2017.03.123},
note={cited By 41},
url={https://www.scopus.com/inward/record.uri?eid=2-s2.0-85016500748&doi=10.1016%2fj.chemosphere.2017.03.123&partnerID=40&md5=8867f115ace64ade15ef1614772f6e3b},
abstract={The last decade has seen a considerable increase in the use of silver nanoparticles (AgNPs), which are found in many every-day consumer products including textiles, plastics, cosmetics, household sprays and paints. The release of those AgNPs into aquatic environments could be causing ecological damage. In this study we assess the toxicity of AgNPs of different sizes to two species of microalgae, from freshwater and marine environment (Chlamydomonas reinhardtii and Phaeodactylum tricornutum respectively). Dissolution processes affect the form and concentration of AgNPs in both environments. Dissolution of Ag from AgNPs was around 25 times higher in marine water. Nevertheless, dissolution of AgNPs in both culture media seems to be related to the small size and higher surface area of NPs. In marine water, the main chemical species were AgCl2− (53.7%) and AgCl3−2 (45.2%). In contrast, for freshwater, the main chemical species were Ag+ (26.7%) and AgCl− (4.3%). The assessment of toxicological responses, specifically growth, cell size, cell complexity, chlorophyll a, reactive oxygen species, cell membrane damage and effective quantum yield of PSII, corroborated the existence of different toxicity mechanisms for microalgae. Indirect effects, notably dissolved Ag ions, seem to control toxicity to freshwater microalgae, whereas direct effects, notably attachment onto the cell surface and the internalization of AgNPs inside cells, seem to determine toxicity to the marine species studied. This research contributes to knowledge on the role of intrinsic and extrinsic factors in determining the behavior of NPs in different aquatic environments and the interaction with microalgae. © 2017 Elsevier Ltd},
keywords={Algae;  Cell membranes;  Consumer products;  Cytology;  Damage detection;  Dissolution;  Metal nanoparticles;  Microorganisms;  Seawater;  Silver halides;  Toxicity;  Water, Chlamydomonas reinhardtii;  Freshwater;  Freshwater microalgae;  Micro-algae;  Phaeodactylum tricornutum;  Reactive oxygen species;  Silver nanoparticles (AgNps);  Toxicological response, Silver nanoparticles, chemical compound;  chlorophyll a;  cyanocobalamin;  fresh water;  reactive oxygen metabolite;  sea water;  silver;  silver chloride;  silver nanoparticle;  fresh water;  ion;  metal nanoparticle;  silver;  water;  water pollutant, aquatic environment;  chlorophyll;  diatom;  ecotoxicology;  freshwater environment;  green alga;  marine environment;  microalga;  reactive oxygen species;  seawater;  silver;  toxicity, aquatic environment;  Article;  cell density;  cell membrane;  cell size;  Chlamydomonas reinhardtii;  controlled study;  culture medium;  dissolution;  internalization;  membrane damage;  nonhuman;  particle size;  Phaeodactylum tricornutum;  photosystem II;  quantum yield;  surface area;  chemistry;  Chlamydomonas reinhardtii;  drug effects;  microalga;  solubility;  toxicity;  water pollutant, Chlamydomonas reinhardtii;  Phaeodactylum tricornutum, Chlamydomonas reinhardtii;  Fresh Water;  Ions;  Metal Nanoparticles;  Microalgae;  Seawater;  Silver;  Solubility;  Water;  Water Pollutants, Chemical},
document_type={Article},
source={Scopus},
}
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