Effects of silver-graphene oxide nanocomposites on soil microbial communities
- Authors
- Kim, Min-Ji; Ko, Daegeun; Ko, Kwanyoung; Kim, Dawon; Lee, Ji-Yeon; Woo, Sang Myeong; Kim, Woong; Chung, Haegeun
- Issue Date
- 15-3월-2018
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Nanomaterial; Microbial biomass; Soil incubation; Soil enzyme; Pyrosequencing
- Citation
- JOURNAL OF HAZARDOUS MATERIALS, v.346, pp.93 - 102
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF HAZARDOUS MATERIALS
- Volume
- 346
- Start Page
- 93
- End Page
- 102
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/76716
- DOI
- 10.1016/j.jhazmat.2017.11.032
- ISSN
- 0304-3894
- Abstract
- Due to the application of silver-graphene oxide (Ag-GO) in diverse fields, it is important to investigate its potential impacts on the environment including soils. In this study, the response of microbial communities in soils treated with Ag-GO synthesized by glucose reduction was determined by analyzing enzyme activities, biomass, and inorganic N concentrations and by pyrosequencing. In soils treated with 0.1-1 mg Ag-GO g(-1) soil, the activities of P-glucosidase, cellobiohydrolase, and xylosidase decreased up to 80% and NO3- concentration decreased up to 82% indicating inhibited nitrification. Within the bacterial community, the relative abundance of Acidobacteria and Cyanobacteria in soils treated with Ag-GO were lower than that in control soil. Meanwhile, the relative abundance of AD3 and Firmicutes tended to increase under Ag-GO treatments. These changes in bacterial community composition reflected lowered activities associated with C and N cycling. On the other hand, microbial biomass showed no distinct change in response to Ag-GO treatment. Our study can serve as important basis in establishing guidelines for regulating the release of nanocomposites such as Ag-GO to the soil environment. (C) 2017 Elsevier B.V. All rights reserved.
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