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Cao H, Zhang X, Wang H, Ding B, Ge S, Zhao J. Effects of Graphene-Based Nanomaterials on Microorganisms and Soil Microbial Communities. Microorganisms 2024; 12:814. [PMID: 38674758 PMCID: PMC11051958 DOI: 10.3390/microorganisms12040814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 04/15/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
The past decades have witnessed intensive research on the biological effects of graphene-based nanomaterials (GBNs) and the application of GBNs in different fields. The published literature shows that GBNs exhibit inhibitory effects on almost all microorganisms under pure culture conditions, and that this inhibitory effect is influenced by the microbial species, the GBN's physicochemical properties, the GBN's concentration, treatment time, and experimental surroundings. In addition, microorganisms exist in the soil in the form of microbial communities. Considering the complex interactions between different soil components, different microbial communities, and GBNs in the soil environment, the effects of GBNs on soil microbial communities are undoubtedly intertwined. Since bacteria and fungi are major players in terrestrial biogeochemistry, this review focuses on the antibacterial and antifungal performance of GBNs, their antimicrobial mechanisms and influencing factors, as well as the impact of this effect on soil microbial communities. This review will provide a better understanding of the effects of GBNs on microorganisms at both the individual and population scales, thus providing an ecologically safe reference for the release of GBNs to different soil environments.
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Affiliation(s)
- Huifen Cao
- College of Agriculture and Life Science, Shanxi Datong University, Datong 037009, China;
| | - Xiao Zhang
- Engineering Research Center of Coal-Based Ecological Carbon Sequestration Technology of the Ministry of Education, Key Laboratory of Graphene Forestry Application of National Forest and Grass Administration, Shanxi Datong University, Datong 037009, China; (B.D.); (J.Z.)
| | - Haiyan Wang
- College of Chemistry and Chemical Engineering, Shanxi Datong University, Datong 037009, China
| | - Baopeng Ding
- Engineering Research Center of Coal-Based Ecological Carbon Sequestration Technology of the Ministry of Education, Key Laboratory of Graphene Forestry Application of National Forest and Grass Administration, Shanxi Datong University, Datong 037009, China; (B.D.); (J.Z.)
| | - Sai Ge
- Center of Academic Journal, Shanxi Datong University, Datong 037009, China;
| | - Jianguo Zhao
- Engineering Research Center of Coal-Based Ecological Carbon Sequestration Technology of the Ministry of Education, Key Laboratory of Graphene Forestry Application of National Forest and Grass Administration, Shanxi Datong University, Datong 037009, China; (B.D.); (J.Z.)
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2
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Simeonova DD, Pollmann K, Bianco A, Lièvremont D. Graphene oxide and bacteria interactions: what is known and what should we expect? mSphere 2024; 9:e0071523. [PMID: 38197645 PMCID: PMC10826346 DOI: 10.1128/msphere.00715-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2024] Open
Abstract
Graphene oxide (GO) and graphene-based materials (GBMs) have gained over the last two decades considerable attention due to their intrinsic physicochemical properties and their applications. Besides, a lot of concern regarding the potential toxicity of GBMs has emerged. One of the aspects of concern is the interactions between GBMs and different environmental compartments, especially indigenous microbial and, in particular, bacterial communities. Recent research showed that GO and GBMs impacted bacterial pure culture or bacterial communities; therefore, these interactions have to be further studied to better understand and assess the fate of these materials in the environment. Here, we present our opinion and hypotheses related to possible degradation mechanisms of GO that can be used by environmental bacteria. This work is the first attempt to deduce and summarize plausible degradation pathways of GO, from structurally similar recalcitrant and toxic compounds, such as polyaromatic hydrocarbons.
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Affiliation(s)
- Diliana D. Simeonova
- The Stephan Angeloff Institute of Microbiology, BAS, Atelier Pasteur, Sofia, Bulgaria
| | - Katrin Pollmann
- Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Dresden, Germany
| | - Alberto Bianco
- CNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR 3572, ISIS, University of Strasbourg, Strasbourg, France
| | - Didier Lièvremont
- Chemistry and Biochemistry of Bioactive Molecules, University of Strasbourg/CNRS, UMR 7177, Strasbourg Institute of Chemistry, Strasbourg, France
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3
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Das P, Penton CR, Bi Y, Westerhoff P. Unraveling mechanisms behind reduced nitrate leaching with graphite nanomaterials addition with fertilizers in soil column experiments. Chemosphere 2023:139417. [PMID: 37419157 DOI: 10.1016/j.chemosphere.2023.139417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 07/02/2023] [Accepted: 07/03/2023] [Indexed: 07/09/2023]
Abstract
Overuse or mistimed application of nitrogen fertilizer can cause nitrate contamination in groundwater and surrounding surface waters. Previous greenhouse studies have explored the use of graphene nanomaterials, including graphite nano additive (GNA), to reduce nitrate leaching in an agricultural soil while growing lettuce crops. To investigate the mechanism of GNA addition in suppressing nitrate leaching, we conducted soil column experiments using native agricultural soils under saturated or unsaturated flow conditions to simulate varied irrigation. We investigated the effects of temperature (4 °C compared with 20 °C) on microbial activity and dose effect of GNA was also explored (165 mg/kg soil and 1650 mg/kg soil) for biotic soil column experiments whereas a single temperature condition (20 °C) and GNA dose (165 mg/kg soil) was employed for abiotic (autoclaved) soil column experiments. Results showed GNA addition had minimal effects on nitrate leaching in saturated flow soil columns due to short hydraulic residence times (∼3.5 h). In comparison, longer residence times (∼3 d) in unsaturated soil columns reduced nitrate leaching by 25-31% relative to control soil columns without GNA addition. Furthermore, nitrate retention in the soil column was found to be suppressed at 4 °C compared with 20 °C, suggesting a bio-mediated mechanism for GNA addition to reduce nitrate leaching. In addition, the soil dissolved organic matter was found to be associated with nitrate leaching, where less nitrate leaching occurring when higher dissolved organic carbon (DOC) was measured in leachate water. Following studies of adding soil-derived organic carbon (SOC) resulted in greater nitrogen retention in the unsaturated soil columns only when GNA was present. Overall, the results suggest that GNA-amended soil reduces nitrate loss through increased N immobilization in the microbial biomass or loss of N in gaseous phase through enhanced nitrification and denitrification process.
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Affiliation(s)
- Partho Das
- School of Sustainable Engineering and the Built Environment, Ira A. Fulton Schools of Engineering, Arizona State University, Tempe, AZ, USA
| | - C Ryan Penton
- College of Integrative Sciences and Arts, Arizona State University, Mesa, AZ, USA; Center for Fundamental and Applied Microbiomics, Biodesign Institute, Arizona State University, Tempe, AZ, USA
| | - Yuqiang Bi
- School of Sustainable Engineering and the Built Environment, Ira A. Fulton Schools of Engineering, Arizona State University, Tempe, AZ, USA.
| | - Paul Westerhoff
- School of Sustainable Engineering and the Built Environment, Ira A. Fulton Schools of Engineering, Arizona State University, Tempe, AZ, USA.
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He G, Yang Y, Liu G, Zhang Q, Liu W. Global analysis of the perturbation effects of metal-based nanoparticles on soil nitrogen cycling. Glob Chang Biol 2023; 29:4001-4017. [PMID: 37082828 DOI: 10.1111/gcb.16735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 04/01/2023] [Accepted: 04/17/2023] [Indexed: 05/03/2023]
Abstract
Although studies have investigated the effects of metal-based nanoparticles (MNPs) on soil biogeochemical processes, the results obtained thus far are highly variable. Moreover, we do not yet understand how the impact of MNPs is affected by experimental design and environmental conditions. Herein, we conducted a global analysis to synthesize the effects of MNPs on 17 variables associated with soil nitrogen (N) cycling from 62 studies. Our results showed that MNPs generally exerted inhibitory effects on N-cycling process rates, N-related enzyme activities, and microbial variables. The response of soil N cycling varied with MNP type, and exposure dose was the most decisive factor for the variations in the responses of N-cycling process rates and enzyme activities. Notably, Ag/Ag2 S and CuO had dose-dependent inhibitory effects on ammonia oxidation rates, while CuO and Zn/ZnO showed hormetic effects on nitrification and denitrification rates, respectively. Other experimental design factors (e.g., MNP size and exposure duration) also regulated the effect of MNPs on soil N cycling, and specific MNPs, such as Ag/Ag2 S, exerted stronger effects during long-term (>28 days) exposure. Environmental conditions, including soil pH, organic carbon, texture, and presence/absence of plants, significantly influenced MNP toxicity. For instance, the effects of Ag/Ag2 S on the ammonia oxidation rate and the activity of leucine aminopeptidase were more potent in acid (pH <6), organic matter-limited (organic carbon content ≤10 g kg-1 ), and coarser soils. Overall, these results provide new insights into the general mechanisms by which MNPs alter soil N processes in different environments and underscore the urgent need to perform multivariate and long-term in situ trials in simulated natural environments.
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Affiliation(s)
- Gang He
- CAS Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yuyi Yang
- CAS Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China
| | - Guihua Liu
- CAS Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China
| | - Quanfa Zhang
- CAS Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China
| | - Wenzhi Liu
- CAS Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China
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5
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Ko K, Chung H, Kim W, Kim MJ. Effects of different sizes of polystyrene micro(nano)plastics on soil microbial communities. NanoImpact 2023; 30:100460. [PMID: 37004806 DOI: 10.1016/j.impact.2023.100460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/22/2023] [Accepted: 03/28/2023] [Indexed: 06/03/2023]
Abstract
Micro(nano)plastic (MNP) pollution in soil environments is a major concern, but the effects of different sizes of MNPs on soil microbial communities, which are crucial in nutrient cycling, has not been well investigated. In this study, we aimed to determine the effects of polystyrene (PS) MNPs of different sizes (0.05-, 0.5-, and 5-μm) on soil microbial activity and community composition. Changes in inorganic N concentration, microbial biomass, and extracellular enzyme activities were determined in soils treated with 100 and 1000 μg PS MNPs g-1 soil during a 40-d incubation experiment. Soil microbial biomass was significantly lowered when soils were treated with 0.5- or 5-μm MNPs at 100 and 1000 μg PS MNPs g-1 soil. NH4+ concentration was higher in soils treated with 5-μm MNPs at 100 and 1000 μg g-1 soil than in the control soils at day 1, suggesting that MNPs inhibited the soil nitrification in short term. In contrast, extracellular enzyme activity was not altered by MNPs. The composition of microbial communities analyzed by Illumina MiSeq sequencing changed; particularly, the relative abundance of several bacteria related to N cycling, such as the genus Rhizomicrobium belonging to Alphaproteobacteria was decreased by 0.5- and 5-μm MNPs. Our study shows that the size of MNPs is an important factor that can determine their effects on soil microbial communities. Therefore, the size effects need to be considered in assessing the environmental impacts of MNPs.
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Affiliation(s)
- Kwanyoung Ko
- Department of Environmental Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Haegeun Chung
- Department of Environmental Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Woong Kim
- Department of Materials Science and Engineering, Korea University, Seoul 02473, Republic of Korea
| | - Min-Ji Kim
- Department of Materials Science and Engineering, Korea University, Seoul 02473, Republic of Korea.
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6
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Fang J, Weng Y, Li B, Liu H, Liu L, Tian Z, Du S. Graphene oxide decreases the abundance of nitrogen cycling microbes and slows nitrogen transformation in soils. Chemosphere 2022; 309:136642. [PMID: 36202372 DOI: 10.1016/j.chemosphere.2022.136642] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/24/2022] [Accepted: 09/26/2022] [Indexed: 06/16/2023]
Abstract
Graphene oxide (GO) has been widely used in many applications due to its excellent properties. Given the extensive production and use of this nanomaterial, its release into the environment is inevitable. However, little is known about the effects of GO on microbial nitrogen transformation and the related processes after GO enters the soil environment. The present study showed that GO significantly reduced soil microbial biomass and caused a decline in microbial diversity after the soils were subjected to various GO concentrations (10, 100, and 1000 mg kg-1) for 4 months. Among them, the abundances of nitrogen transformation related bacteria such as Firmicutes, Nitrospirota, Proteobacteria, Planctomycetota, and Cyanobacteria were significantly decreased with GO incubation. Among the enzymes that are related to nitrogen transformation, nitrate reductase was the most sensitive even at low concentrations of GO, followed by ammonia monooxygenase and urease, which were reduced by 13-31%, 5-26%, and 9-19% respectively, than those of the control. We found that high concentrations of GO significantly increased the retention of soil urea by 32-59%, and the contents of ammonium and nitrate were 22-28% and 55-69% lower compared to those of the control, respectively. Moreover, the response of most of the indicators in the above process to multilayer GO was more significant than that to single layer GO. Overall, this study provides new insights into the comprehensive understanding of GO's impacts on the soil nitrogen cycle.
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Affiliation(s)
- Jin Fang
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Yineng Weng
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Beier Li
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China
| | - Huijun Liu
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Lijuan Liu
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China
| | - Zhongling Tian
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China
| | - Shaoting Du
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China.
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7
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Jin M, Liu J, Wu W, Zhou Q, Fu L, Zare N, Karimi F, Yu J, Lin CT. Relationship between graphene and pedosphere: A scientometric analysis. Chemosphere 2022; 300:134599. [PMID: 35427662 DOI: 10.1016/j.chemosphere.2022.134599] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 04/04/2022] [Accepted: 04/10/2022] [Indexed: 06/14/2023]
Abstract
The mass production and application of graphene have gradually expanded from academic research to industrial applications, which will inevitably lead to graphene entering the soil actively and passively. Therefore, the relationship between graphene and the pedosphere has attracted a lot of attention in the last decade. The most important question is whether graphene will harm soil health. Fortunately, the evidence is that graphene can alter soil physicochemical properties and microbial communities to some extent, but not dramatically. On this basis, the role of graphene in soil has been investigated in all directions. This review summarizes the literature on the relationship between graphene and soils. Topics include remediation and sensing of soil using graphene materials, the effects of graphene on soil, and the effects of graphene in soil on plant growth. At the same time, this review also uses bibliometrics to review the history of the topic. The number of papers published each year, participating countries, participating institutions and important articles were analyzed in detail. Finally, based on the published literature, we described the future perspectives of graphene and the pedosphere.
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Affiliation(s)
- Meiqing Jin
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China
| | - Jinsong Liu
- Zhejiang Key Laboratory of Ecological and Environmental Monitoring, Forewarning and Quality Control, Zhejiang Ecological and Environmental Monitoring Center, Hangzhou, 310012, China
| | - Weihong Wu
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China
| | - Qingwei Zhou
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China
| | - Li Fu
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China.
| | - Najmeh Zare
- Department of Chemical Engineering, Quchan University of Technology, Quchan, Iran
| | - Fatemeh Karimi
- Department of Chemical Engineering, Quchan University of Technology, Quchan, Iran.
| | - Jinhong Yu
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering (NIMTE), Chinese Academy of Sciences, Ningbo, 315201, China
| | - Cheng-Te Lin
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering (NIMTE), Chinese Academy of Sciences, Ningbo, 315201, China
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8
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Deng J, Li B, Yin W, Bu H, Yang B, Li P, Zheng X, Wu J. Enhanced bacterial inactivation by activated carbon modified with nano-sized silver oxides: Performance and mechanism. J Environ Manage 2022; 311:114884. [PMID: 35287075 DOI: 10.1016/j.jenvman.2022.114884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 02/28/2022] [Accepted: 03/08/2022] [Indexed: 06/14/2023]
Abstract
In this study, nano-sized silver oxides were loaded on activated carbon (nAg2O/AC) through a facile impregnation-calcination method for enhanced bacterial inactivation from drinking water, in which Escherichia coli (E. coli) was used as target bacteria. XRD and SEM characterization confirmed that nano-sized Ag2O particles (50-200 nm) were successfully prepared and uniformly distributed on the surfaces and pores of AC. Due to the structural reducing groups of AC, surface-bound Ag(I) was partially converted to Ag in the nAg2O matrix and the resulted Ag could sterilize E. coli directly. More importantly, surface-bound Ag could catalyze O2 and H2O to generate reactive oxygen species (ROS) for oxidation sterilization, thus significantly enhanced the inactivation efficiency from 0.8 log10 CFU/mL (nAg2O control) and 0.2 log10 CFU/mL (AC control) to 6.0 log10 CFU/mL in the nAg2O/AC system. The inactivation process was highly pH-dependent, and neutral pH was favorable for sterilization. A sterilization efficiency of 5.2 log10 CFU/mL could still be achieved after 5 running cycles, indicating stable sterilization performance of nAg2O/AC. In addition, the nAg2O/AC also exhibited excellent renewability since a sterilization efficiency of 5.8 log10 CFU/mL was obtained after nAg2O being stripped and reloaded on the AC. These results demonstrated that nAg2O-modified AC is an efficient material for sterilization in water treatment.
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Affiliation(s)
- Jianping Deng
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Bing Li
- School of Light Industry and Materials, Guangdong Polytechnic, Foshan, 528041, China
| | - Weizhao Yin
- School of Environment, Jinan University, Guangzhou, 510632, China
| | - Huaitian Bu
- SINTEF Industry, Department of Materials and Nanotechnology, Forskningsveien 1, 0373, Oslo, Norway
| | - Bo Yang
- School of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Ping Li
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Xiangyu Zheng
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Jinhua Wu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; The Key Laboratory of Environmental Protection and Eco-Remediation of Guangdong Regular Higher Education Institutions, Guangzhou, 510006, China; The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, China.
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9
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Li T, Li Y, Zhang X, Yuan J, Guo J, Wang P, Wei G, Chen C. Distinct response patterns of bacterial communities in Ag- and ZnO-rGO nanocomposite-amended silt loam soils. Sci Total Environ 2022; 810:151270. [PMID: 34756902 DOI: 10.1016/j.scitotenv.2021.151270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/26/2021] [Accepted: 10/23/2021] [Indexed: 06/13/2023]
Abstract
The widespread application of metal-based nanoparticle (MNPs)/reduced graphene oxide (rGO) composites inevitably leads to their release into soils. However, we lack a detailed understanding of the bacterial community response to MNPs-rGO exposure in farmland soils. Here, we conducted a soil microcosm experiment to analyze the potential impact of MNPs-rGO on bacterial communities in two field soils via high-throughput sequencing. The change in alpha diversity of bacterial communities was more susceptible to Ag-rGO and ZnO-rGO treatments than CuO-rGO. In both soils, MNPs-rGO significantly changed the bacterial community structure even at a low dose (1 mg kg-1). The bacterial community structure was most strongly affected by Ag-rGO at 30 days, but the greatest changes occurred in ZnO-rGO at 60 days. The differences in soil properties could shape bacterial communities to MNPs-rGO exposure. Distance-based redundancy analysis and functional annotation of prokaryotic taxa showed that some bacterial species associated with nitrogen cycling were greatly influenced by Ag-rGO and ZnO-rGO exposure. In sum, Ag-rGO and ZnO-rGO may potentially affect bacterial communities and nitrogen turnover under long-term realistic field exposure. These findings present a perspective on the response of bacterial communities to MNPs-rGO and provide a fundamental basis for estimating the ecological behavior of MNPs-rGO.
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Affiliation(s)
- Tao Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Yuhua Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Xike Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Jiawei Yuan
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Junkang Guo
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, Shaanxi, PR China
| | - Pan Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Gehong Wei
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, PR China.
| | - Chun Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, PR China.
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Hong Q, Jiang L, Wang S, Huang J, Sun J, Li X, Zuo P, Yin J, Lu J. One-Step In Situ Patternable Reduction of a Ag-rGO Hybrid Using Temporally Shaped Femtosecond Pulses. Materials (Basel) 2022; 15:ma15020563. [PMID: 35057280 PMCID: PMC8781587 DOI: 10.3390/ma15020563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 12/29/2021] [Accepted: 01/03/2022] [Indexed: 12/10/2022]
Abstract
In recent years, metallic nanoparticle (NP)–two-dimensional material hybrids have been widely used for photocatalysis and photoreduction. Here, we introduce a femtosecond laser reduction approach that relies on the repetitive ablation of recast layers by usi–ng temporally shaped pulses to achieve the fast fabrication of metallic NP–two-dimensional material hybrids. We selectively deposited silver-reduced graphene oxide (Ag–rGO) hybrids on different substrates under various fabrication conditions. The deposition of the hybrids was attributed to the redistribution of the cooling ejected plume after multiple radiation pulses and the exchange of carriers with ejected plume ions containing activated species such as small carbon clusters and H2O. The proposed one-step in situ fabrication method is a competitive fabrication process that eliminates the additive separation process and exhibits morphological controllability. The Ag–rGO hybrids demonstrate considerable potential for chemomolecular and biomolecular detection because the surface-enhanced Raman scattering signal of the enhancement factor reached 4.04 × 108.
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Affiliation(s)
- Quan Hong
- Laser Micro/Nano-Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China; (Q.H.); (S.W.); (J.H.); (J.S.); (X.L.); (P.Z.)
| | - Lan Jiang
- Laser Micro/Nano-Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China; (Q.H.); (S.W.); (J.H.); (J.S.); (X.L.); (P.Z.)
- Beijing Institute of Technology Chongqing Innovation Center, Chongqing 401120, China
- Correspondence:
| | - Sumei Wang
- Laser Micro/Nano-Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China; (Q.H.); (S.W.); (J.H.); (J.S.); (X.L.); (P.Z.)
- Beijing Institute of Technology Chongqing Innovation Center, Chongqing 401120, China
| | - Ji Huang
- Laser Micro/Nano-Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China; (Q.H.); (S.W.); (J.H.); (J.S.); (X.L.); (P.Z.)
| | - Jiaxin Sun
- Laser Micro/Nano-Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China; (Q.H.); (S.W.); (J.H.); (J.S.); (X.L.); (P.Z.)
| | - Xin Li
- Laser Micro/Nano-Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China; (Q.H.); (S.W.); (J.H.); (J.S.); (X.L.); (P.Z.)
- Beijing Institute of Technology Chongqing Innovation Center, Chongqing 401120, China
| | - Pei Zuo
- Laser Micro/Nano-Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China; (Q.H.); (S.W.); (J.H.); (J.S.); (X.L.); (P.Z.)
- Beijing Institute of Technology Chongqing Innovation Center, Chongqing 401120, China
| | - Jiangang Yin
- Han’s Laser Technology Industry Group Co., Ltd., 6 Building WanYan Industry Zone, Haoye Road, Fuyong Town, Baoan District, Shenzhen 518103, China; (J.Y.); (J.L.)
| | - Jiangang Lu
- Han’s Laser Technology Industry Group Co., Ltd., 6 Building WanYan Industry Zone, Haoye Road, Fuyong Town, Baoan District, Shenzhen 518103, China; (J.Y.); (J.L.)
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11
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de Medeiros AMZ, Khan LU, da Silva GH, Ospina CA, Alves OL, de Castro VL, Martinez DST. Graphene oxide-silver nanoparticle hybrid material: an integrated nanosafety study in zebrafish embryos. Ecotoxicol Environ Saf 2021; 209:111776. [PMID: 33341698 DOI: 10.1016/j.ecoenv.2020.111776] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 12/04/2020] [Accepted: 12/05/2020] [Indexed: 05/24/2023]
Abstract
This work reports an integrated nanosafety study including the synthesis and characterization of the graphene oxide-silver nanoparticle hybrid material (GO-AgNPs) and its nano-ecotoxicity evaluation in the zebrafish embryo model. The influences of natural organic matter (NOM) and a chorion embryo membrane were considered in this study, looking towards more environmentally realistic scenarios and standardized nanotoxicity testing. The nanohybrid was successfully synthesized using the NaBH4 aqueous method, and AgNPs (~ 5.8 nm) were evenly distributed over the GO surface. GO-AgNPs showed a dose-response acute toxicity: the LC50 was 1.5 mg L-1 for chorionated embryos. The removal of chorion, however, increased this toxic effect by 50%. Furthermore, the presence of NOM mitigated mortality, and LC50 for GO-AgNPs changed respectively from 2.3 to 1.2 mg L-1 for chorionated and de-chorionated embryos. Raman spectroscopy confirmed the ingestion of GO by embryos; but without displaying acute toxicity up to 100 mg L-1, indicating that the silver drove toxicity down. Additionally, it was observed that silver nanoparticle dissolution has a minimal effect on these observed toxicity results. Finally, understanding the influence of chorion membranes and NOM is a critical step towards the standardization of testing for zebrafish embryo toxicity in safety assessments and regulatory issues.
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Affiliation(s)
- Aline M Z de Medeiros
- Brazilian Nanotechnology National Laboratoy (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo State, Brazil; Center of Nuclear Energy in Agriculture (CENA), University of São Paulo (USP), Piracicaba, São Paulo State, Brazil; Brazilian Agricultural Research Corporation (Embrapa Environment), Jaguariúna, São Paulo State, Brazil
| | - Latif U Khan
- Brazilian Nanotechnology National Laboratoy (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo State, Brazil
| | - Gabriela H da Silva
- Brazilian Nanotechnology National Laboratoy (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo State, Brazil
| | - Carlos A Ospina
- Brazilian Nanotechnology National Laboratoy (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo State, Brazil
| | - Oswaldo L Alves
- Laboratory of Solid State Chemistry (LQES) and NanoBioss Laboratory, University of Campinas (Unicamp), Campinas, São Paulo State, Brazil
| | - Vera Lúcia de Castro
- Brazilian Agricultural Research Corporation (Embrapa Environment), Jaguariúna, São Paulo State, Brazil
| | - Diego Stéfani T Martinez
- Brazilian Nanotechnology National Laboratoy (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo State, Brazil; Center of Nuclear Energy in Agriculture (CENA), University of São Paulo (USP), Piracicaba, São Paulo State, Brazil; Laboratory of Solid State Chemistry (LQES) and NanoBioss Laboratory, University of Campinas (Unicamp), Campinas, São Paulo State, Brazil.
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12
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Peixoto S, Khodaparast Z, Cornelis G, Lahive E, Green Etxabe A, Baccaro M, Papadiamantis AG, Gonçalves SF, Lynch I, Busquets-Fite M, Puntes V, Loureiro S, Henriques I. Impact of Ag 2S NPs on soil bacterial community - A terrestrial mesocosm approach. Ecotoxicol Environ Saf 2020; 206:111405. [PMID: 33010592 DOI: 10.1016/j.ecoenv.2020.111405] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 09/18/2020] [Accepted: 09/19/2020] [Indexed: 06/11/2023]
Abstract
Soils might be a final sink for Ag2S nanoparticles (NPs). Still, there are limited data on their effects on soil bacterial communities (SBC). To bridge this gap, we investigated the effects of Ag2S NPs (10 mg kg-1 soil) on the structure and function of SBC in a terrestrial indoor mesocosm, using a multi-species design. During 28 days of exposure, the SBC function-related parameters were analysed in terms of enzymatic activity, community level physiological profile, culture of functional bacterial groups [phosphorous-solubilizing bacteria (P-SB) and heterotrophic bacteria (HB)], and SBC structure was analysed by 16S rRNA gene-targeted denaturing gradient gel electrophoresis. The SBC exposed to Ag2S NPs showed a significative decrease of functional parameters, such as β-glucosidase activity and L-arginine consumption, and increase of the acid phosphatase activity. At the structural level, significantly lower richness and diversity were detected, but at later exposure times compared to the AgNO3 treatment, likely because of a low dissolution rate of Ag2S NPs. In fact, stronger effects were observed in soils spiked with AgNO3, in both functional and structural parameters. Changes in SBC structure seem to negatively correlate with parameters related to phosphorous (acid phosphatase activity) and carbon cycling (abundance of HB, P-SB, and β-glucosidase activity). Our results indicate a significant effect of Ag2S NPs on SBC, specifically on parameters related to carbon and phosphorous cycling, at doses as low as 10 mg kg-1 soil. These effects were only observed after 28 days, highlighting the importance of long-term exposure experiments for slowly dissolving NPs.
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Affiliation(s)
- S Peixoto
- CESAM-Centre for Environmental and Marine Studies & Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Z Khodaparast
- CESAM-Centre for Environmental and Marine Studies & Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - G Cornelis
- Department of Soil and Environment, Swedish University of Agricultural Sciences, 75651 Uppsala, Sweden
| | - E Lahive
- UK Centre for Ecology and Hydrology, Maclean Building, Benson Lane, Crowmarsh Gifford, Wallingford OX10 8BB, UK
| | - A Green Etxabe
- UK Centre for Ecology and Hydrology, Maclean Building, Benson Lane, Crowmarsh Gifford, Wallingford OX10 8BB, UK
| | - M Baccaro
- Division of Toxicology, Wageningen University, 6708 WE Wageningen, The Netherlands
| | - A G Papadiamantis
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston B15 2TT, Birmingham, UK; NovaMechanics Ltd., 1065 Nicosia, Cyprus
| | - S F Gonçalves
- CESAM-Centre for Environmental and Marine Studies & Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - I Lynch
- UK Centre for Ecology and Hydrology, Maclean Building, Benson Lane, Crowmarsh Gifford, Wallingford OX10 8BB, UK
| | - M Busquets-Fite
- Applied Nanoparticles SL, C Àlaba 88, 08018 Barcelona, Spain
| | - V Puntes
- Institut Català de Nanociència i Nanotecnologia (ICN2), CSIC, The Barcelona Institute of Science and Technology (BIST), Campus UAB, Bellaterra, Barcelona, Spain; Institució Catalana de Recerca i Estudis Avançats (ICREA), 08010 Barcelona, Spain; Vall d'Hebron Institut de Recerca (VHIR), 08035 Barcelona, Spain
| | - S Loureiro
- CESAM-Centre for Environmental and Marine Studies & Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | - I Henriques
- Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, Portugal
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13
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Baysal A, Saygin H, Ustabasi GS. Risks of graphene nanomaterial contamination in the soil: evaluation of major ions. Environ Monit Assess 2020; 192:622. [PMID: 32894359 DOI: 10.1007/s10661-020-08561-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 08/20/2020] [Indexed: 06/11/2023]
Abstract
Soils are facing new environmental contaminants, such as nanomaterials. While these emerging contaminants are increasingly being released into soil, their potential impact on this medium and their effect on soil's major chemical components (e.g., sulfate, nitrate, ammonia, and phosphate) have yet to be examined, as well as their relation with microbial toxicity. Herein, column experiments were conducted to investigate the behavior of major ions under 10 and 200 mg/L multiple contaminations of graphene nanomaterials in agricultural and undisturbed soils, as well as the retention of the graphene nanomaterials in the soil and their effect on soil zeta potentials throughout the column. Moreover, to evaluate the impact of the risks of graphene nanomaterial contamination on soil major ions, the present study also examines the bacterial toxicity. The results showed that graphene retention was influenced the soil zeta potentials. Graphene also influenced the concentrations of the major ions in soil and the order of the influence degree was sulfate > phosphate > ammonia > nitrate. The changes of the major ions in soil by the exposure of graphene nanomaterials have also affected the response of selected bacteria.
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Affiliation(s)
- A Baysal
- Health Services Vocational School of Higher Education, T.C. Istanbul Aydin University, Sefakoy Kucukcekmece, 34295, Istanbul, Turkey.
| | - H Saygin
- Application and Research Center for Advanced Studies, T.C. Istanbul Aydin University, Sefakoy Kucukcekmece, 34295, Istanbul, Turkey
| | - G S Ustabasi
- Health Services Vocational School of Higher Education, T.C. Istanbul Aydin University, Sefakoy Kucukcekmece, 34295, Istanbul, Turkey
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14
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McGee CF. The effects of silver nanoparticles on the microbial nitrogen cycle: a review of the known risks. Environ Sci Pollut Res Int 2020; 27:31061-31073. [PMID: 32514926 DOI: 10.1007/s11356-020-09548-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 06/01/2020] [Indexed: 05/16/2023]
Abstract
The nitrogen cycle is an integral biogeochemical function for maintaining healthy environments. Nitrogen is a key nutrient that must be continuously replenished through recycling mechanisms to sustain ecosystems, disruption to which can result in compromised ecosystem functioning. Certain stages in the microbial conversion of nitrogen compounds are performed by a limited range of micro-organisms making these key functional species in ecosystems. The growing industrial use of silver nanoparticles (AgNPs) potentially poses significant risks for microbial nitrogen cycling species. AgNPs possess potent antimicrobial properties and are expected to reach a range of natural environments through several routes of exposure. Certain functional nitrogen cycling microbes have been shown to be highly susceptible to AgNP toxicity. The current literature indicates that AgNPs can negatively affect certain nitrogen fixing, nitrifying and denitrifying microbes in vitro. In vivo studies investigating the effect of AgNPs on nitrogen cycling microbial communities and nitrogen transformation rates in soil, sediment and sludge environments have also indicated disruption of these functional processes. This review provides a comprehensive description of the current state of knowledge regarding the toxicity of AgNPs to nitrogen cycling communities. The aim of the review is to highlight the most susceptible stages in the nitrogen cycle and the implications for the affected ecosystems.
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Affiliation(s)
- Conor Francis McGee
- Department of Agriculture, Food and the Marine, Cellbridge, Co. Kildare, Ireland.
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15
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Zhang P, Guo Z, Luo W, Monikh FA, Xie C, Valsami-Jones E, Lynch I, Zhang Z. Graphene Oxide-Induced pH Alteration, Iron Overload, and Subsequent Oxidative Damage in Rice ( Oryza sativa L.): A New Mechanism of Nanomaterial Phytotoxicity. Environ Sci Technol 2020; 54:3181-3190. [PMID: 32083855 DOI: 10.1021/acs.est.9b05794] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The mechanism of graphene-based nanomaterial (GBM)-induced phytotoxicity and its association with the GBM physicochemical properties are not yet fully understood. The present study compared the effects of graphene oxide (GO) and reduced GO (rGO) on rice seedling growth under hydroponic conditions for 3 weeks. GO at 100 and 250 mg/L reduced shoot biomass (by 25 and 34%, respectively) and shoot elongation (by 17 and 43%, respectively) and caused oxidative damage, while rGO exhibited no overt effect except for the enhancement of the antioxidant enzyme activities, suggesting that the surface oxygen content is a critical factor affecting the biological impacts of GBMs. GO treatments (100 and 250 mg/L) enhanced the iron (Fe) translocation and caused excessive Fe accumulation in shoots (2.2 and 3.6 times higher than control), which was found to be the main reason for the oxidative damage in shoots. GO-induced acidification of the nutrient solution was the main driver for the Fe overload in plants. In addition to the antioxidant regulators, the plants triggered other pathways to defend against the Fe toxicity via downregulation of the Fe transport associated metabolites (mainly coumarins and flavonoids). Plant root exudates facilitated the reduction of toxic GO to nontoxic rGO, acting as another route for plant adaption to GO-induced phytotoxicity. This study provides new insights into the mechanism of the phytotoxicity of GBMs. It also provides implications for the agricultural application of GBM that the impacts of GBMs on the uptake of multiple nutrients in plants should be assessed simultaneously and reduced forms of GBMs are preferential to avoid toxicity.
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Affiliation(s)
- Peng Zhang
- Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
- School of Geography, Earth and Environmental Science, University of Birmingham, Edgbaston, B15 2TT Birmingham, U.K
| | - Zhiling Guo
- School of Geography, Earth and Environmental Science, University of Birmingham, Edgbaston, B15 2TT Birmingham, U.K
| | - Wenhe Luo
- Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | | | - Changjian Xie
- Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Eugenia Valsami-Jones
- School of Geography, Earth and Environmental Science, University of Birmingham, Edgbaston, B15 2TT Birmingham, U.K
| | - Iseult Lynch
- School of Geography, Earth and Environmental Science, University of Birmingham, Edgbaston, B15 2TT Birmingham, U.K
| | - Zhiyong Zhang
- Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
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Kim MJ, Kim W, Chung H. Effects of silver-graphene oxide on seed germination and early growth of crop species. PeerJ 2020; 8:e8387. [PMID: 32025369 PMCID: PMC6991133 DOI: 10.7717/peerj.8387] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 12/12/2019] [Indexed: 11/20/2022] Open
Abstract
Due to its excellent material properties, silver-graphene oxide (Ag-GO) is being studied for diverse applications, such as antimicrobial agents, catalysts and absorbents. Such use of Ag-GO may lead to its release into terrestrial ecosystems, but little is known about the impact of Ag-GO on plants. In the present study, we determined the effects of Ag-GO on seed germination and early growth of crop species by analyzing the germination rate, growth of roots and shoots, hydrogen peroxide (H2O2) accumulation, and the uptake of Ag in alfalfa, radish and cucumber treated with 0.2–1.6 mg mL−1 of Ag-GO. Ag-GO treatment increased the shoot growth of radish at 0.2–1.6 mg mL−1 but decreased that of cucumber at 0.8 mg mL−1. In addition, Ag-GO enhanced the root elongation of radish at 0.2 mg mL−1 but inhibited that of alfalfa at 0.2, 0.8 and 1.6 mg mL−1. Ag-GO treatment induced H2O2 production in alfalfa, radish and cucumber in a concentration-dependent manner. Larger amounts of Ag accumulated in the seedlings as the concentration of Ag-GO increased, and such accumulation suggests that Ag may be transferred to higher trophic levels when plants are exposed to Ag-GO in ecosystems. Our study can, thus, serve as an important basis for setting guidelines for the release of nanomaterials into the environment.
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Affiliation(s)
- Min-Ji Kim
- Department of Materials Science and Engineering, Korea University, Seoul, Republic of Korea
| | - Woong Kim
- Department of Materials Science and Engineering, Korea University, Seoul, Republic of Korea
| | - Haegeun Chung
- Department of Environmental Engineering, Konkuk University, Seoul, Republic of Korea
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17
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Wang D, Saleh NB, Sun W, Park CM, Shen C, Aich N, Peijnenburg WJGM, Zhang W, Jin Y, Su C. Next-Generation Multifunctional Carbon-Metal Nanohybrids for Energy and Environmental Applications. Environ Sci Technol 2019; 53:7265-7287. [PMID: 31199142 PMCID: PMC7388031 DOI: 10.1021/acs.est.9b01453] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Nanotechnology has unprecedentedly revolutionized human societies over the past decades and will continue to advance our broad societal goals in the coming decades. The research, development, and particularly the application of engineered nanomaterials have shifted the focus from "less efficient" single-component nanomaterials toward "superior-performance", next-generation multifunctional nanohybrids. Carbon nanomaterials (e.g., carbon nanotubes, graphene family nanomaterials, carbon dots, and graphitic carbon nitride) and metal/metal oxide nanoparticles (e.g., Ag, Au, CdS, Cu2O, MoS2, TiO2, and ZnO) combinations are the most commonly pursued nanohybrids (carbon-metal nanohybrids; CMNHs), which exhibit appealing properties and promising multifunctionalities for addressing multiple complex challenges faced by humanity at the critical energy-water-environment (EWE) nexus. In this frontier review, we first highlight the altered and newly emerging properties (e.g., electronic and optical attributes, particle size, shape, morphology, crystallinity, dimensionality, carbon/metal ratio, and hybridization mode) of CMNHs that are distinct from those of their parent component materials. We then illustrate how these important newly emerging properties and functions of CMNHs direct their performances at the EWE nexus including energy harvesting (e.g., H2O splitting and CO2 conversion), water treatment (e.g., contaminant removal and membrane technology), and environmental sensing and in situ nanoremediation. This review concludes with identifications of critical knowledge gaps and future research directions for maximizing the benefits of next-generation multifunctional CMNHs at the EWE nexus and beyond.
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Affiliation(s)
- Dengjun Wang
- National Research Council Resident Research Associate at the United States Environmental Protection Agency , Ada , Oklahoma 74820 , United States
| | - Navid B Saleh
- Department of Civil, Architectural and Environmental Engineering , University of Texas at Austin , Austin , Texas 78712 , United States
| | - Wenjie Sun
- Department of Civil and Environmental Engineering , Southern Methodist University , Dallas , Texas 75275 , United States
| | - Chang Min Park
- Department of Environmental Engineering , Kyungpook National University , Buk-gu , Daegu 41566 , South Korea
| | - Chongyang Shen
- Department of Soil and Water Sciences , China Agricultural University , Beijing 100193 , China
| | - Nirupam Aich
- Department of Civil, Structural and Environmental Engineering , University at Buffalo, The State University of New York , Buffalo , New York 14260 , United States
| | - Willie J G M Peijnenburg
- Institute of Environmental Sciences (CML) , Leiden University , P.O. Box 9518, 2300 RA Leiden , The Netherlands
- Center for Safety of Substances and Products , National Institute for Public Health and the Environment , P.O. Box 1, 3720 BA Bilthoven , The Netherlands
| | - Wei Zhang
- Department of Plant, Soil and Microbial Sciences, and Environmental Science and Policy Program , Michigan State University , East Lansing , Michigan 48824 , United States
| | - Yan Jin
- Department of Plant and Soil Sciences , University of Delaware , Newark , Delaware 19716 , United States
| | - Chunming Su
- Groundwater, Watershed, and Ecosystem Restoration Division, National Risk Management Research Laboratory, Office of Research and Development , United States Environmental Protection Agency , Ada , Oklahoma 74820 , United States
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18
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Forstner C, Orton TG, Skarshewski A, Wang P, Kopittke PM, Dennis PG. Effects of graphene oxide and graphite on soil bacterial and fungal diversity. Sci Total Environ 2019; 671:140-148. [PMID: 30928743 DOI: 10.1016/j.scitotenv.2019.03.360] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 03/22/2019] [Accepted: 03/22/2019] [Indexed: 05/25/2023]
Abstract
Graphene oxide (GO) is an oxidized form of graphene that is relatively cheap and easy to produce. This has heralded its widespread use in a range of industries, with its likelihood of release into the environment increasing accordingly. In pure culture, GO has been shown to influence bacteria and fungi, but its effects on environmental microbial communities remain poorly characterized, despite the important ecosystem services that these organisms underpin. Here, we characterized the effects of GO and graphite, over time (7, 14 and 30 days) and at three concentrations (1 ng, 1 μg and 1 mg kg dry soil-1), on soil bacterial and fungal diversity using 16S rRNA and ITS2 gene amplicon sequencing. Graphite was included as a reference material as it is widely distributed in the environment. Neither GO or graphite had significant effects on the alpha diversity of microbial communities. The composition of bacterial and fungal communities, however, was significantly influenced by both materials at all doses. With the exception of the lowest GO dose on day 14, these effects were apparent for all treatments over the course of the experiment. Nonetheless, the effects of GO and graphite were of similar magnitude, albeit with some differences in the taxa affected.
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Affiliation(s)
- Christian Forstner
- School of Earth and Environmental Sciences, The University of Queensland, St Lucia, Brisbane, QLD 4072, Australia
| | - Thomas G Orton
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia, Brisbane, QLD 4072, Australia
| | - Adam Skarshewski
- School of Earth and Environmental Sciences, The University of Queensland, St Lucia, Brisbane, QLD 4072, Australia
| | - Peng Wang
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia, Brisbane, QLD 4072, Australia
| | - Peter M Kopittke
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia, Brisbane, QLD 4072, Australia
| | - Paul G Dennis
- School of Earth and Environmental Sciences, The University of Queensland, St Lucia, Brisbane, QLD 4072, Australia.
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Chang J, Duan Y, Dong J, Shen S, Si G, He F, Yang Q, Chen J. Bioremediation of Hg-contaminated soil by combining a novel Hg-volatilizing Lecythophora sp. fungus, DC-F1, with biochar: Performance and the response of soil fungal community. Sci Total Environ 2019; 671:676-684. [PMID: 30939320 DOI: 10.1016/j.scitotenv.2019.03.409] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 03/21/2019] [Accepted: 03/26/2019] [Indexed: 06/09/2023]
Abstract
Reducing Hg contamination in soil using eco-friendly approaches has attracted increasing attention in recent years. In this study, a novel multi-metal-resistant Hg-volatilizing fungus belonging to Lecythophora sp., DC-F1, was isolated from multi-metal-polluted mining-area soil, and its performance in reducing Hg bioavailability in soil when used in combination with biochar was investigated. The isolate displayed a minimum inhibitory concentration of 84.5mg·L-1 for Hg(II) and volatilized >86% of Hg(II) from LB liquid medium with an initial concentration of 7.0mg·L-1 within 16h. Hg(II) contents in soils and grown lettuce shoots decreased by 13.3-26.1% and 49.5-67.7%, respectively, with DC-F1 and/or biochar addition compared with a control over 56days of incubation. Moreover, treatment with both bioagents achieved the lowest Hg content in lettuce shoots. Hg presence and DC-F1 addition significantly decreased the number of fungal ITS gene copies in soils. High-throughput sequencing showed that the soil fungal community compositions were more largely influenced by DC-F1 addition than by biochar addition, with the proportion of Mortierella increasing and those of Penicillium and Thielavia decreasing with DC-F1 addition. Developing the coupling of Lecythophora sp. DC-F1 with biochar into a feasible approach for the recovery of Hg-contaminated soils is promising.
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Affiliation(s)
- Junjun Chang
- School of Ecology and Environmental Science, Yunnan University, Kunming 650091, PR China
| | - Yijun Duan
- Yunnan Institute of Environmental Science (Kunming China International Research Center for Plateau Lakes), Kunming 650034, PR China
| | - Jia Dong
- School of Ecology and Environmental Science, Yunnan University, Kunming 650091, PR China
| | - Shili Shen
- School of Ecology and Environmental Science, Yunnan University, Kunming 650091, PR China
| | - Guangzheng Si
- School of Ecology and Environmental Science, Yunnan University, Kunming 650091, PR China; Institute of International Rivers and Eco-security, Yunnan University, Kunming, Yunnan 650091, PR China
| | - Fang He
- School of Ecology and Environmental Science, Yunnan University, Kunming 650091, PR China; Institute of International Rivers and Eco-security, Yunnan University, Kunming, Yunnan 650091, PR China
| | - Qingchen Yang
- School of Ecology and Environmental Science, Yunnan University, Kunming 650091, PR China; Institute of International Rivers and Eco-security, Yunnan University, Kunming, Yunnan 650091, PR China
| | - Jinquan Chen
- School of Ecology and Environmental Science, Yunnan University, Kunming 650091, PR China.
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20
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Yin X, Jiang Y, Tan Y, Meng X, Sun H, Wang N. Co-transport of graphene oxide and heavy metal ions in surface-modified porous media. Chemosphere 2019; 218:1-13. [PMID: 30458243 DOI: 10.1016/j.chemosphere.2018.11.089] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 10/19/2018] [Accepted: 11/12/2018] [Indexed: 06/09/2023]
Abstract
The ability to predict the transport of heavy metal ions in porous media with different surface characteristics is crucial to protect groundwater quality and public health. In this study, the effects of graphene oxide (GO) on co-transport and remobilization of Pb2+ and Cd2+ in humic acid (HA), smectite, kaolinite, and ferrihydrite-coated sand media were evaluated via laboratory packed-column experiments. Scanning electron microscope and energy dispersive X-ray analysis showed that the surface morphology of the coated sands was quite different and that ∼56.7-89.9% of the surface was covered by the coating and the major elemental components were C, O, Si, Al, and Fe. GO exhibited high mobility in HA, kaolinite, and smectite-coated sand, but showed high retention in ferrihydrite-coated sand. While GO reduced the transport of Pb2+ and Cd2+, both metal ions also reduced the mobility of GO in coated-sand columns. Elution experiments revealed that GO led to the remobilization and release of the previously sorbed Pb2+ and Cd2+ from the coated sand. However, GO could not release Pb2+ and Cd2+ from smectite-coated sand columns, probably because smectite has stronger adsorption affinity to the heavy metals than GO. Derjaguin-Landau-Verwey-Overbeek calculations were employed and explained the GO transport behavior in the columns well. Furthermore, the advection-dispersion-reaction equation simulated the cotransport of Pb2+ and Cd2+ with GO in the coated sand well. These results are expected to provide insight into the potential impact of coexisting nanomaterials with contaminants in vulnerable soil and groundwater systems.
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Affiliation(s)
- Xianqiang Yin
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, 712100, China.
| | - Yanji Jiang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
| | - Yuehui Tan
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
| | - Xiangmin Meng
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
| | - Huimin Sun
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, 712100, China
| | - Nong Wang
- Agro-Environmental Protection Institute, Ministry of Agriculture of the People's Republic of China Tianjin, 300191, China
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21
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Khalid HF, Tehseen B, Sarwar Y, Hussain SZ, Khan WS, Raza ZA, Bajwa SZ, Kanaras AG, Hussain I, Rehman A. Biosurfactant coated silver and iron oxide nanoparticles with enhanced anti-biofilm and anti-adhesive properties. J Hazard Mater 2019; 364:441-448. [PMID: 30384254 DOI: 10.1016/j.jhazmat.2018.10.049] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 10/11/2018] [Accepted: 10/16/2018] [Indexed: 06/08/2023]
Abstract
Pseudomonas aeruginosa and Staphylococcus aureus are among the hazardous biofilm forming bacteria ubiquitous in industrial/clinical wastes. Serious efforts are required to develop effective strategies to control surface-growing antibiotic resistant pathogenic bacterial communities which they are emerging as a global health issue. Blocking hazardous biofilms would be a useful aspect of biosurfactant coated nanoparticles (NPs). In this regard, we report a facile method for the synthesis of rhamnolipid (RL) coated silver (Ag) and iron oxide (Fe3O4) NPs and propose the mechanism of their synergistic antibacterial and anti-adhesive properties against biofilms formed by P. aeruginosa and S. aureus. These NPs demonstrated excellent anti-biofilm activity not only during the biofilms formation but also on the pre-formed biofilms. Mechanistically, RL coated silver (35 nm) and Fe3O4 NPs (48 nm) generate reactive oxygen species, which contribute to the antimicrobial activity. The presence of RLs shell on the nanoparticles significantly reduces the cell adhesion by modifying the surface hydrophobicity and hence enhancing the anti-biofilm property of NPs against both mentioned strains. These findings suggest that RL coated Ag and Fe3O4 NPs may be used as potent alternate to reduce the infection severity by inhibiting the biofilm formation and, therefore, they possess potential biomedical applications for antibacterial coatings and wound dressings.
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Affiliation(s)
- Hafiza Faiza Khalid
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Bushra Tehseen
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Yasra Sarwar
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Syed Zajif Hussain
- Department of Chemistry & Chemical Engineering, SBA School of Science & Engineering (SBASSE), Lahore University of Management Sciences (LUMS), DHA, Lahore Cantt, 54792, Pakistan
| | - Waheed S Khan
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Zulfiqar Ali Raza
- Department of Applied Sciences, National Textile University, Faisalabad, 37610, Pakistan
| | - Sadia Zafar Bajwa
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Antonios G Kanaras
- Physics and Astronomy, Institute of Life Sciences, University of Southampton, Southampton, SO171BJ, United Kingdom
| | - Irshad Hussain
- Department of Chemistry & Chemical Engineering, SBA School of Science & Engineering (SBASSE), Lahore University of Management Sciences (LUMS), DHA, Lahore Cantt, 54792, Pakistan
| | - Asma Rehman
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan.
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22
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Ko K, Kim MJ, Lee JY, Kim W, Chung H. Effects of graphene oxides and silver-graphene oxides on aquatic microbial activity. Sci Total Environ 2019; 651:1087-1095. [PMID: 30266053 DOI: 10.1016/j.scitotenv.2018.09.124] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 08/15/2018] [Accepted: 09/09/2018] [Indexed: 06/08/2023]
Abstract
Graphene oxide (GO) and silver-graphene oxide (Ag-GO) are used in various fields, such as biotechnology and environmental engineering, due to their unique material properties, including hydrophilicity, high surface area, mechanical strength, and antibacterial activity. With the increase in the usage of such nanomaterials, they are likely to enter the aquatic environment during the manufacturing process, product use, and disposal. However, the effects of GO and Ag-GO on aquatic microbial activities are not well understood. In this study, we aimed to determine the effects of GO and Ag-GO on the aquatic microbial communities inhabiting a river and a lake located in Seoul, South Korea. Unfiltered natural surface water samples were exposed to GO and Ag-GO at a final concentration of 10 to 100 mg L-1 for 48 h. The activity of leucine aminopeptidase was significantly lowered within 1 h of GO and Ag-GO treatments and nitrification rate was significantly lowered. An increase in intracellular lactate dehydrogenase levels of up to 5% was observed in natural waters under GO and Ag-GO treatments compared to the control (0%), indicating cell membrane damage. In addition, generation of intracellular reactive oxygen species increased up to 184% under 100 mg GO L-1 and 102% under 100 mg Ag-GO L-1 treatment compared to the control (0%). Our results indicate that the activities of microorganisms inhabiting natural surface waters may have been inhibited by oxidative stress and cell membrane damage induced by GO and Ag-GO. We believe that our results may contribute to the development of regulatory guidelines on the release of emerging engineered nanomaterials to the environment.
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Affiliation(s)
- Kwanyoung Ko
- Department of Environmental Engineering, Konkuk University, Seoul 143-701, Republic of Korea
| | - Min-Ji Kim
- Department of Materials Science and Engineering, Korea University, Seoul 136-713, Republic of Korea
| | - Ji-Yeon Lee
- Department of Environmental Engineering, Konkuk University, Seoul 143-701, Republic of Korea
| | - Woong Kim
- Department of Materials Science and Engineering, Korea University, Seoul 136-713, Republic of Korea
| | - Haegeun Chung
- Department of Environmental Engineering, Konkuk University, Seoul 143-701, Republic of Korea.
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23
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Shi Y, Xia W, Liu S, Guo J, Qi Z, Zou Y, Wang L, Duan SZ, Zhou Y, Lin C, Shi J, Wang L, Fan C, Lv M, Tang Z. Impact of Graphene Exposure on Microbial Activity and Community Ecosystem in Saliva. ACS Appl Bio Mater 2019; 2:226-235. [DOI: 10.1021/acsabm.8b00566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuting Shi
- National Clinical
Research Center of Oral Diseases, Shanghai 200011, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai 200011, China
| | - Wenjun Xia
- National Clinical
Research Center of Oral Diseases, Shanghai 200011, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai 200011, China
| | - Shima Liu
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, CAS Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- College of Sciences, Shanghai University, Shanghai 200444, China
| | - Jingyang Guo
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, CAS Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- College of Sciences, Shanghai University, Shanghai 200444, China
| | - Zhengnan Qi
- National Clinical
Research Center of Oral Diseases, Shanghai 200011, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai 200011, China
| | - Yan Zou
- National Clinical
Research Center of Oral Diseases, Shanghai 200011, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai 200011, China
| | - Liping Wang
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Sheng-Zhong Duan
- National Clinical
Research Center of Oral Diseases, Shanghai 200011, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai 200011, China
| | - Yi Zhou
- School of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Chenglie Lin
- School of Basic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Jiye Shi
- UCB Pharma, Slough, Berkshire SL1 3WE, U.K
| | - Lihua Wang
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, CAS Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Chunhai Fan
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, CAS Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Min Lv
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, CAS Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Zisheng Tang
- National Clinical
Research Center of Oral Diseases, Shanghai 200011, China
- Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai 200011, China
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24
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Budhani S, Egboluche NP, Arslan Z, Yu H, Deng H. Phytotoxic effect of silver nanoparticles on seed germination and growth of terrestrial plants. J Environ Sci Health C Environ Carcinog Ecotoxicol Rev 2019; 37:330-355. [PMID: 31661365 PMCID: PMC7773158 DOI: 10.1080/10590501.2019.1676600] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Silver nanoparticles (AgNP) exhibit size and concentration dependent toxicity to terrestrial plants, especially crops. AgNP exposure could decrease seed germination, inhibit seedling growth, affect mass and length of roots and shoots. The phytotoxic pathway has been partly understood. Silver (as element, ion or AgNP) accumulates in roots/leaves and triggers the defense mechanism at cellular and tissue levels, which alters metabolism, antioxidant activities and related proteomic expression. Botanical changes (either increase or decrease) in response to AgNP exposure include reactive oxygen species generation, superoxide dismutase activities, H2O2 level, total chlorophyll, proline, carotenoid, ascorbate and glutathione contents, etc. Such processes lead to abnormal morphological changes, suppression of photosynthesis and/or transpiration, and other symptoms. Although neutral or beneficial effects are also reported depending on plant species, adverse effects dominate in majority of the studies. More in depth research is needed to confidently draw any conclusions and to guide legislation and regulations.
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Affiliation(s)
- Shruti Budhani
- Department of Chemistry, School of Computer, Mathematical and Natural Sciences, Morgan State University, Baltimore, MD, USA
| | - Nzube Prisca Egboluche
- Department of Chemistry, School of Computer, Mathematical and Natural Sciences, Morgan State University, Baltimore, MD, USA
| | - Zikri Arslan
- Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS, USA
| | - Hongtao Yu
- Department of Chemistry, School of Computer, Mathematical and Natural Sciences, Morgan State University, Baltimore, MD, USA
| | - Hua Deng
- Department of Chemistry, School of Computer, Mathematical and Natural Sciences, Morgan State University, Baltimore, MD, USA
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25
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Parada J, Rubilar O, Fernández-Baldo MA, Bertolino FA, Durán N, Seabra AB, Tortella GR. The nanotechnology among US: are metal and metal oxides nanoparticles a nano or mega risk for soil microbial communities? Crit Rev Biotechnol 2018; 39:157-172. [PMID: 30396282 DOI: 10.1080/07388551.2018.1523865] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Metal nanoparticles and metal oxides nanoparticles (MNPs/MONPs) have been widely included in a great diversity of products and industrial applications and they are already a part of our everyday life. According to estimation studies, their production is expected to increase exponentially in the next few years. Consequently, soil has been suggested as the main sink of MNPs/MONPs once they are deliberately or accidentally released into the environment. The potential negative perturbations that may result on soil microbial communities and ecological processes are resulting in concerns. Several nano-toxicological studies of MNPs/MONPs, reported so far, have focused on aquatic organisms, animals, and soil invertebrates. However, during recent years, the studies have been oriented to understand the effects of MNPs/MONPs on microbial communities and their interaction with soil components. The studies have suggested that MNPs/MONPs are one of the most toxic type to soil biota, amongst different types of nanomaterials. This may threaten soil health and fertility, since microbial communities are known to support important biological processes and ecosystem services such as the nutrient cycling, whereby their protection against the environmental pollution is imperative. Therefore, in this review we summarize the actual knowledge available from the last five years (2013-2018) and gaps about the potential negative, positive or neutral effects produced on soil by different classes of MNPs/MONPs. A particular emphasis has been placed on the associated soil microorganisms and biological processes. Finally, perspectives about future research are discussed.
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Affiliation(s)
- J Parada
- a Doctoral Program in Sciences of Natural Resources , Universidad de La Frontera , Temuco , Chile
| | - O Rubilar
- b Chemical Engineering Department , Universidad de La Frontera , Temuco , Chile.,c Scientific & Technological Bioresource Nucleus , Universidad de La Frontera , Temuco , Chile
| | - M A Fernández-Baldo
- d INQUISAL, Departamento de Química , Universidad Nacional de San Luis , San Luis , Argentina
| | - F A Bertolino
- d INQUISAL, Departamento de Química , Universidad Nacional de San Luis , San Luis , Argentina
| | - N Durán
- e Institute of Biology, Urogenital, Carcinogenesis and Immunotherapy Laboratory, Department of Genetics, Evolution and Bioagents, University of Campinas, Campinas, Brazil.,f NanoBioss, Chemistry Institute , University of Campinas , Campinas , Brazil.,g Nanomedicine Research Unit (Nanomed) , Federal University of ABC (UFABC) , Santo André , Brazil
| | - A B Seabra
- h Center for Natural and Human Sciences , Universidade Federal do ABC , Santo André , Brazil
| | - G R Tortella
- b Chemical Engineering Department , Universidad de La Frontera , Temuco , Chile.,c Scientific & Technological Bioresource Nucleus , Universidad de La Frontera , Temuco , Chile
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26
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Grün AL, Emmerling C. Long-term effects of environmentally relevant concentrations of silver nanoparticles on major soil bacterial phyla of a loamy soil. Environ Sci Eur 2018; 30:31. [PMID: 30221103 PMCID: PMC6132800 DOI: 10.1186/s12302-018-0160-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 08/20/2018] [Indexed: 05/12/2023]
Abstract
BACKGROUND The growing production and use of engineered AgNP in industry and private households make increasing concentrations of AgNP in the environment unavoidable. Although we already know the harmful effects of AgNP on pivotal bacterial driven soil functions, information about the impact of silver nanoparticles (AgNP) on the soil bacterial community structure is rare. Hence, the aim of this study was to reveal the long-term effects of AgNP on major soil bacterial phyla in a loamy soil. The study was conducted as a laboratory incubation experiment over a period of 1 year using a loamy soil and AgNP concentrations ranging from 0.01 to 1 mg AgNP/kg soil. Effects were quantified using the taxon-specific 16S rRNA qPCR. RESULTS The short-term exposure of AgNP at environmentally relevant concentration of 0.01 mg AgNP/kg caused significant positive effects on Acidobacteria (44.0%), Actinobacteria (21.1%) and Bacteroidetes (14.6%), whereas beta-Proteobacteria population was minimized by 14.2% relative to the control (p ≤ 0.05). After 1 year of exposure to 0.01 mg AgNP/kg diminished Acidobacteria (p = 0.007), Bacteroidetes (p = 0.005) and beta-Proteobacteria (p = 0.000) by 14.5, 10.1 and 13.9%, respectively. Actino- and alpha-Proteobacteria were statistically unaffected by AgNP treatments after 1-year exposure. Furthermore, a statistically significant regression and correlation analysis between silver toxicity and exposure time confirmed loamy soils as a sink for silver nanoparticles and their concomitant silver ions. CONCLUSIONS Even very low concentrations of AgNP may cause disadvantages for the autotrophic ammonia oxidation (nitrification), the organic carbon transformation and the chitin degradation in soils by exerting harmful effects on the liable bacterial phyla.
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Affiliation(s)
- Anna-Lena Grün
- Department of Soil Science, Faculty of Regional and Environmental Science, University of Trier, Campus II, Behringstraße 21, 54296 Trier, Germany
| | - Christoph Emmerling
- Department of Soil Science, Faculty of Regional and Environmental Science, University of Trier, Campus II, Behringstraße 21, 54296 Trier, Germany
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