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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Inhibitory effects of silver nanoparticles in two green algae, Chlorella vulgaris and Dunaliella tertiolecta
Ecotoxicology and Environmental Safety, Volume 78, Year 2012
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Description
Freshwater microalga Chlorella vulgaris and marine microalga Dunaliella tertiolecta were used to investigate toxic effects induced by 50. nm silver nanoparticles (AgNPs). To induce AgNPs effect, we exposed Chlorella vulgaris and Dunaliella tertiolecta for 24. h to 0-10. mg/L. We showed that growth media had different effects in AgNPs agglomerates' formation. Cellular viability, reactive oxygen species (ROS) formation and lipids peroxidation were employed to assess the toxic effects of AgNPs. AgNPs were able to interact directly with the Chlorella vulgaris cells surface and large aggregates were observed. AgNPs have a negative effect on Chlorella vulgaris and Dunaliella tertiolecta, as manifested by a strong decrease in chlorophyll content, viable algal cells, increased ROS formation and lipids peroxidation. The variability in sensitivity of both algae towards AgNPs was observed. We conclude that AgNPs have a negative effect on aquatic algae and these alterations might have serious consequences on structure and function of aquatic plant communities. © 2011 Elsevier Inc.
Authors & Co-Authors
Oukarroum, Abdallah
Canada, Montreal
Université du Québec à Montréal
Perreault, François
Canada, Montreal
Université du Québec à Montréal
Popovic, Radovan B.
Canada, Montreal
Université du Québec à Montréal
Statistics
Citations: 312
Authors: 3
Affiliations: 2
Identifiers
Doi:
10.1016/j.ecoenv.2011.11.012
ISSN:
10902414
Research Areas
Environmental