Potential impacts of silver nanoparticles on bacteria in the aquatic environment.

It is inevitable that nano-silver will be released into the environment. Therefore, there is an urgent need to better understand the effects of silver nanoparticles (Ag-NPs) on microbes in natural and engineered environments. The most remarkable gap in our knowledge on this lies on the low Ag-NPs dose side. This review summarized studies on the effects of Ag-NPs on bacteria from simple to complicated aquatic systems. A hormetic model with a narrow stimulatory zone has been proposed based on both experimental phenomenon and the potential mechanisms of the observed effects. Spectrum of the stimulating zone depends on Ag-NP properties, bacterial types and environmental conditions tested. This may become a concern in terms of Ag-NP disposal, and further research is required to build a sophisticated toxicity model for Ag-NPs. Copyright © 2017 Elsevier Ltd. All rights reserved.

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Zhiya Sheng, Yang Liu. Potential impacts of silver nanoparticles on bacteria in the aquatic environment. Journal of environmental management. 2017 Apr 15;191:290-296

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PMID: 28129561

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