Abstract
In this study we examined the influence of silver nanoparticles (SNP) on the bacterial community and microbial processes in two soils from Thailand, a Ayutthaya (Ay) and Kamphaengsaen soil series (Ks). Results of this analysis revealed that SNP did not affect to pH, electrical conductivity, cation exchange capacity, and organic matter in both the Ay and Ks series. Automated ribosomal intergenic spacer analysis (ARISA) analysis profiles showed that bacterial community decreased with increasing SNP concentration. Pearson's correlation coefficient and multidimensional scaling analyses indicated that the effects of SNP on the bacterial community structure depended more on soil types than SNP application rates and incubation periods. Additionally, the results showed that SNP application rates affected on amount of CO2 emissions, while SNP application rates had no effect on N mineralization in both soil types. This study is the first investigation of the effects of SNP on bacterial community using ARISA analysis. Our results might be useful to evaluate the risk associated with the applications of SNP for consumer products and agricultural practices.
Original language | English (US) |
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Pages (from-to) | 2119-2124 |
Number of pages | 6 |
Journal | World Journal of Microbiology and Biotechnology |
Volume | 30 |
Issue number | 7 |
DOIs | |
State | Published - Jun 2014 |
Bibliographical note
Funding Information:Acknowledgments This work was supported by a grant from the Graduate School, Kasetsart University and Center for Advanced Studies in Agriculture and Food, KU Institute for Advanced Studies, Kasetsart University, and The Commission on Higher Education.
Keywords
- Bacterial community structure
- Microbial activity
- Silver nanoparticles
- Thai soil