Impact of silver nanoparticles on natural marine biofilm bacteria
Fabrega, Julia and Zhang, Rui and Renshaw, Joanna C. and Liu, Wen Tso and Lead, Jamie R. (2011) Impact of silver nanoparticles on natural marine biofilm bacteria. Chemosphere, 85 (6). pp. 961-966. ISSN 1879-1298 (https://doi.org/10.1016/j.chemosphere.2011.06.066)
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There has been a recent increase in the use of silver nanoparticles (Ag NPs) in a wide range of consumer products due to their highly effective antimicrobial properties. However, Ag NPs give cause for concern since their wide use makes them likely to be released into aquatic ecosystems and potentially affect natural bacterial communities. In this study marine biofilms were grown in situ in a coastal site (Singapore Harbour) and exposed in the laboratory for a further 24h to 0-2000μgL -1 of well characterised Ag NPs. Increasing concentrations of Ag NPs caused a significant decrease in biofilm volume and biomass, and Ag uptake by biofilms per unit of volume was also dependent on concentration. Terminal fragment length polymorphisms and subsequent cluster and phylogenetic analysis showed the presence of major bacterial groups in biofilms irrespective of treatment with Ag NPs. This implies that even at the highest concentrations studied these taxonomic groups were not displaced. Nevertheless, biofilm succession was impeded on Ag NP treated biofilms, affecting the relative abundance of major bacterial groups in the biofilm community, with potential longer term effects on biofilm development and function.
ORCID iDs
Fabrega, Julia, Zhang, Rui, Renshaw, Joanna C. ORCID: https://orcid.org/0000-0003-2073-3239, Liu, Wen Tso and Lead, Jamie R.;-
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Item type: Article ID code: 48205 Dates: DateEvent1 October 2011PublishedSubjects: Science > Chemistry
Technology > Engineering (General). Civil engineering (General)Department: Faculty of Engineering > Civil and Environmental Engineering Depositing user: Pure Administrator Date deposited: 21 May 2014 15:48 Last modified: 11 Nov 2024 10:41 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/48205