Chemical Structure of Stabilizing Layers of Negatively Charged Silver Nanoparticles as an Effector of Shifts in Soil Bacterial Microbiome under Short-Term Exposure

Sebastian Wojciech Przemieniecki, Magdalena Oćwieja, Sławomir Ciesielski, Wiktor Halecki (), Ewelina Matras and Anna Gorczyca ()
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Sebastian Wojciech Przemieniecki: Department of Entomology, Phytopathology and Molecular Diagnostics, University of Warmia and Mazury in Olsztyn, Prawochenskiego 17, PL-10721 Olsztyn, Poland
Magdalena Oćwieja: Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences, Niezapominajek 8, PL-30239 Krakow, Poland
Sławomir Ciesielski: Department of Environmental Biotechnology, University of Warmia and Mazury in Olsztyn, Słoneczna 45G, PL-10719 Olsztyn, Poland
Wiktor Halecki: Institute of Nature Conservation, Polish Academy of Sciences, Mickiewicza 33, PL-31120 Kraków, Poland
Ewelina Matras: Department of Microbiology and Biomonitoring, University of Agriculture in Krakow, Mickiewicza 21, PL-31120 Krakow, Poland
Anna Gorczyca: Department of Microbiology and Biomonitoring, University of Agriculture in Krakow, Mickiewicza 21, PL-31120 Krakow, Poland

IJERPH, 2022, vol. 19, issue 21, 1-29

Abstract: In this work, we have assessed the exposure of soil bacteria from potato monoculture to three types of silver nanoparticles (AgNPs) as well as silver ions (Ag + ions) delivered in the form of silver nitrate and a commercially available fungicide. The diversity of the soil microbial community, enzymatic activity, and carbon source utilization were evaluated. It was found that only the fungicide significantly limited the abundance and activity of soil bacteria. Silver ions significantly reduced bacterial metabolic activity. In turn, one type of AgNPs prepared with the use of tannic acid (TA) increased bacterial load and activity. There was found in all AgNPs treated soils (1) a greater proportion of all types of persistent bacteria, i.e., Bacillus , Paenibacillus, and Clostridium ; (2) a visible decrease in the proportion of Nocardioides , Arthrobacter, and Candidatus Solibacter; (3) almost complete depletion of Pseudomonas ; (4) increase in the number of low-frequency taxa and decrease in dominant taxa compared to the control soil. Despite the general trend of qualitative changes in the bacterial community, it was found that the differences in the chemical structure of the AgNP stabilizing layers had a significant impact on the specific metabolic activity resulting from qualitative changes in the microbiome.

Keywords: silver nanoparticles; surface properties; fungicide; soil bacteria; biochemical activity (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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