Silver nanoparticles (AgNPs) are used in a wide range of consumer products because of theirexcellent antimicrobial properties. AgNPs released into the environment are prone to transformationssuch as aggregation, oxidation, or dissolution so they are often stabilised by coatings that affect their physico-chemical properties and change their effect on living organisms. In this study weinvestigated the stability of polyvinylpyrrolidone (PVP) and cetyltrimethylammonium bromide(CTAB) coated AgNPs in an exposure medium, as well as their effect on tobacco germination andearly growth. AgNP-CTAB was found to be more stable in the solid Murashige and Skoog (MS)medium compared to AgNP-PVP. The uptake and accumulation of silver in seedlings was equally effcient after exposure to both types of AgNPs. However, AgNP-PVP induced only mild toxicity onseedlings growth, while AgNP-CTAB caused severe negative effects on all parameters, even comparedto AgNO3. Moreover, CTAB coating itself exerted negative effects on growth. Cysteine additiongenerally alleviated AgNP-PVP-induced negative effects, while it failed to improve germinationand growth parameters after exposure to AgNP-CTAB. These results suggest that the toxic effects ofAgNP-PVP are mainly a consequence of release of Ag+ ions, while phytotoxicity of AgNP-CTAB canrather be ascribed to surface coating itself.
ASJC Scopus subject areas
- Materials Science(all)
Fields of Expertise
- Advanced Materials Science
Treatment code (Nähere Zuordnung)
- Basic - Fundamental (Grundlagenforschung)
Biba, R., Matic, D., Lyons, D. M., Peharec Stefanic, P., Cvjetko, P., Tkalec, M., ... Balen, B. (2020). Coating-Dependent Effects of Silver Nanoparticles on Tobacco Seed Germination and Early Growth. International Journal of Molecular Sciences , 21(10), . https://doi.org/10.3390/ijms21103441