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Herruzo-Ruiz AM, Trombini C, Moreno-Garrido I, Blasco J, Alhama J, Michán C. Ions and nanoparticles of Ag and/or Cd metals in a model aquatic microcosm: Effects on the abundance, diversity and functionality of the sediment bacteriome. MARINE POLLUTION BULLETIN 2024; 204:116525. [PMID: 38852299 DOI: 10.1016/j.marpolbul.2024.116525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 05/27/2024] [Accepted: 05/27/2024] [Indexed: 06/11/2024]
Abstract
Metals can be adsorbed on particulate matter, settle in sediments and cause alterations in aquatic environments. This study assesses the effect of Ag and/or Cd, both in ionic and nanoparticle (NP) forms, on the microbiome of sediments. For that purpose, aquatic controlled-microcosm experiments were exposed to an environmentally relevant and at tenfold higher doses of each form of the metals. Changes in the bacteriome were inferred by 16S rDNA sequencing. Ionic Ag caused a significant decrease of several bacterial families, whereas the effect was opposite when mixed with Cd, e.g., Desulfuromonadaceae family; in both cases, the bacteriome functionalities were greatly affected, particularly the nitrogen and sulfur metabolism. Compared to ionic forms, metallic NPs produced hardly any change in the abundance of microbial families, although the α-biodiversity of the bacteriome was reduced, and the functionality altered, when exposed to the NPs´ mixture. Our goal is to understand how metals, in different forms and combinations, released into the environment may endanger the health of aquatic ecosystems. This work may help to understand how aquatic metal pollution alters the structure and functionality of the microbiome and biogeochemical cycles, and how these changes can be addressed.
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Affiliation(s)
- Ana M Herruzo-Ruiz
- Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Campus de Rabanales, Edificio Severo Ochoa, E-14071 Córdoba, Spain
| | - Chiara Trombini
- Dpt. Ecology and Coastal Management, ICMAN-CSIC, Campus Rio San Pedro, E-11510 Puerto Real (Cadiz), Spain
| | - Ignacio Moreno-Garrido
- Dpt. Ecology and Coastal Management, ICMAN-CSIC, Campus Rio San Pedro, E-11510 Puerto Real (Cadiz), Spain
| | - Julián Blasco
- Dpt. Ecology and Coastal Management, ICMAN-CSIC, Campus Rio San Pedro, E-11510 Puerto Real (Cadiz), Spain
| | - José Alhama
- Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Campus de Rabanales, Edificio Severo Ochoa, E-14071 Córdoba, Spain
| | - Carmen Michán
- Departamento de Bioquímica y Biología Molecular, Campus de Excelencia Internacional Agroalimentario CeiA3, Universidad de Córdoba, Campus de Rabanales, Edificio Severo Ochoa, E-14071 Córdoba, Spain.
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2
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Xu N, Zhou Z, Chen B, Zhang Z, Zhang J, Li Y, Lu T, Sun L, Peijnenburg WJGM, Qian H. Effect of chlorpyrifos on freshwater microbial community and metabolic capacity of zebrafish. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 262:115230. [PMID: 37413963 DOI: 10.1016/j.ecoenv.2023.115230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/30/2023] [Accepted: 07/02/2023] [Indexed: 07/08/2023]
Abstract
Chlorpyrifos is a widely used organophosphorus insecticide because of its high efficiency and overall effectiveness, and it is commonly detected in aquatic ecosystems. However, at present, the impact of chlorpyrifos on the aquatic micro-ecological environment is still poorly understood. Here, we established aquatic microcosm systems treated with 0.2 and 2.0 µg/L chlorpyrifos, and employed omics biotechnology, including metagenomics and 16S rRNA gene sequencing, to investigate the effect of chlorpyrifos on the composition and functional potential of the aquatic and zebrafish intestinal microbiomes after 7 d and 14 d chlorpyrifos treatment. After 14 d chlorpyrifos treatment, the aquatic microbial community was adversely affected in terms of its composition, structure, and stability, while its diversity showed only a slight impact. Most functions, especially capacities for environmental information processing and metabolism, were destroyed by chlorpyrifos treatment for 14 d. We observed that chlorpyrifos increased the number of risky antibiotic resistance genes and aggravated the growth of human pathogens. Although no clear effects on the structure of the zebrafish intestinal microbial community were observed, chlorpyrifos treatment did alter the metabolic capacity of the zebrafish. Our study highlights the ecological risk of chlorpyrifos to the aquatic environment and provides a theoretical basis for the rational use of pesticides in agricultural production.
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Affiliation(s)
- Nuohan Xu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Zhigao Zhou
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China; Zhejiang Province Institute of Architectural Design and Research, Hangzhou 310000, PR China
| | - Bingfeng Chen
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Zhenyan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Jinfeng Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Yan Li
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Tao Lu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Liwei Sun
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - W J G M Peijnenburg
- Institute of Environmental Sciences (CML), Leiden University, RA Leiden 2300, the Netherlands; National Institute of Public Health and the Environment (RIVM), Center for Safety of Substances and Products, P.O. Box 1, Bilthoven, the Netherlands
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China.
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Li W, Luo D, Adyel TM, Wu J, Miao L, Kong M, Hou J. Dynamic responses of carbon metabolism of sediment microbial communities to Ag nanoparticles: Effects of the single and repeated exposure scenarios. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 870:161891. [PMID: 36731554 DOI: 10.1016/j.scitotenv.2023.161891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 01/25/2023] [Accepted: 01/25/2023] [Indexed: 06/18/2023]
Abstract
The widespread use of nanosilver will inevitably lead to their release into aquatic environment, threating the health of freshwater ecosystem. The toxic effects of silver nanoparticles (AgNPs) on sediment microbial diversity, community composition, and functional enzyme activity are well established, while little is known about how sediment microbes dynamically respond to the stress of different AgNPs exposure scenarios. Herein, microcosm experiments were performed to investigate the impacts of repeated (1 mg/L, applied every 6 days for 10 times) and single (10 mg/L) exposure scenarios of AgNPs on the specific functions of sediment microbes (5-60 days). The carbon metabolism of sediment microbial communities was measured using BIOLOG ECO microplates, and carbon metabolic rate and functional diversity indices were calculated. Compared to control group, the maximum carbon source utilization capacity of the microbial community increased by 6.6 and 15.4 % in the single and repeated exposure group, respectively. And the metabolic rates of sediment microorganisms were significant increased by 6.1 % in the repeated exposure group, which suggested that repetitive low-dosing of AgNPs induce a larger alteration of both capacity and rate of microbial carbon metabolism. Notably, different AgNPs exposure scenarios resulted in a shift in the carbon source preference of the microorganisms. After exposure for 60 days, compared with the controls, the ability to utilize polymers was significantly increased by 51.5 and 21.7 % in the single and repeated exposure groups, respectively, and decreased by 33.7 and 10.5 % in the utilization of miscellaneous, both exhibiting significant differences (P < 0.05), implying that AgNPs exposure scenarios affected the microbial-mediated carbon cycling processes in sediment. These results highlight that different exposure scenarios of AgNPs have different effects on the carbon metabolism capacity of microbial communities, thus affecting the carbon cycling processes in which microorganisms are involved.
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Affiliation(s)
- Weiyu Li
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Dan Luo
- Tibet Research Academy of Eco-environmental Sciences, No. 26, Jinzhen Middle Road, Chengguan District, Lhasa 850030, Tibet Autonomous Region, People's Republic of China
| | - Tanveer M Adyel
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Melbourne, VIC 3125, Australia
| | - Jun Wu
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Lingzhan Miao
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China.
| | - Ming Kong
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, People's Republic of China.
| | - Jun Hou
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, People's Republic of China
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Gill SP, Hunter WR, Coulson LE, Banat IM, Schelker J. Synthetic and biological surfactant effects on freshwater biofilm community composition and metabolic activity. Appl Microbiol Biotechnol 2022; 106:6847-6859. [PMID: 36121483 PMCID: PMC9529700 DOI: 10.1007/s00253-022-12179-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/02/2022] [Accepted: 09/08/2022] [Indexed: 11/06/2022]
Abstract
Surfactants are used to control microbial biofilms in industrial and medical settings. Their known toxicity on aquatic biota, and their longevity in the environment, has encouraged research on biodegradable alternatives such as rhamnolipids. While previous research has investigated the effects of biological surfactants on single species biofilms, there remains a lack of information regarding the effects of synthetic and biological surfactants in freshwater ecosystems. We conducted a mesocosm experiment to test how the surfactant sodium dodecyl sulfate (SDS) and the biological surfactant rhamnolipid altered community composition and metabolic activity of freshwater biofilms. Biofilms were cultured in the flumes using lake water from Lake Lunz in Austria, under high (300 ppm) and low (150 ppm) concentrations of either surfactant over a four-week period. Our results show that both surfactants significantly affected microbial diversity. Up to 36% of microbial operational taxonomic units were lost after surfactant exposure. Rhamnolipid exposure also increased the production of the extracellular enzymes, leucine aminopeptidase, and glucosidase, while SDS exposure reduced leucine aminopeptidase and glucosidase. This study demonstrates that exposure of freshwater biofilms to chemical and biological surfactants caused a reduction of microbial diversity and changes in biofilm metabolism, exemplified by shifts in extracellular enzyme activities. KEY POINTS: • Microbial biofilm diversity decreased significantly after surfactant exposure. • Exposure to either surfactant altered extracellular enzyme activity. • Overall metabolic activity was not altered, suggesting functional redundancy.
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Affiliation(s)
- Stephanie P Gill
- Department of Geography and Environmental Studies, Ulster University, Coleraine, BT52 1SA, N. Ireland, UK.
| | - William R Hunter
- Fisheries and Aquatic Ecosystems Branch, Agri-Food and Biosciences Institute, Belfast, N. Ireland, UK
| | - Laura E Coulson
- WasserCluster Lunz, Lunz am See, Austria
- Institute of Hydrobiology and Aquatic Ecosystem Management, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Ibrahim M Banat
- School of Biomedical Sciences, Ulster University, Coleraine, N. Ireland, UK
| | - Jakob Schelker
- WasserCluster Lunz, Lunz am See, Austria
- Department of Functional and Evolutionary Ecology, University of Vienna, Vienna, Austria
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Xu N, Kang J, Ye Y, Zhang Q, Ke M, Wang Y, Zhang Z, Lu T, Peijnenburg WJGM, Bao G, Qian H. Machine learning predicts ecological risks of nanoparticles to soil microbial communities. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 307:119528. [PMID: 35623569 DOI: 10.1016/j.envpol.2022.119528] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 04/20/2022] [Accepted: 05/21/2022] [Indexed: 06/15/2023]
Abstract
With the rapid development of nanotechnology in agriculture, there is increasing urgency to assess the impacts of nanoparticles (NPs) on the soil environment. This study merged raw high-throughput sequencing (HTS) data sets generated from 365 soil samples to reveal the potential ecological effects of NPs on soil microbial community by means of metadata analysis and machine learning methods. Metadata analysis showed that treatment with nanoparticles did not have a significant impact on the alpha diversity of the microbial community, but significantly altered the beta diversity. Unfortunately, the abundance of several beneficial bacteria, such as Dyella, Methylophilus, Streptomyces, which promote the growth of plants, and improve pathogenic resistance, was reduced under the addition of synthetic nanoparticles. Furthermore, metadata demonstrated that nanoparticles treatment weakened the biosynthesis ability of cofactors, carriers, and vitamins, and enhanced the degradation ability of aromatic compounds, amino acids, etc. This is unfavorable for the performance of soil functions. Besides the soil heterogeneity, machine learning uncovered that a) the exposure time of nanoparticles was the most important factor to reshape the soil microbial community, and b) long-term exposure decreased the diversity of microbial community and the abundance of beneficial bacteria. This study is the first to use a machine learning model and metadata analysis to investigate the relationship between the properties of nanoparticles and the hazards to the soil microbial community from a macro perspective. This guides the rational use of nanoparticles for which the impacts on soil microbiota are minimized.
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Affiliation(s)
- Nuohan Xu
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, PR China
| | - Jian Kang
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, PR China
| | - Yangqing Ye
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, PR China
| | - Qi Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, PR China
| | - Mingjing Ke
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, PR China
| | - Yufei Wang
- Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, PR China
| | - Zhenyan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, PR China
| | - Tao Lu
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, PR China
| | - W J G M Peijnenburg
- Institute of Environmental Sciences (CML), Leiden University, RA, Leiden, 2300, the Netherlands; National Institute of Public Health and the Environment (RIVM), Center for Safety of Substances and Products, P.O. Box 1, Bilthoven, the Netherlands
| | - Guanjun Bao
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, PR China
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou, Zhejiang, 310032, PR China.
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Kusi J, Ojewole CO, Ojewole AE, Nwi-Mozu I. Antimicrobial Resistance Development Pathways in Surface Waters and Public Health Implications. Antibiotics (Basel) 2022; 11:821. [PMID: 35740227 PMCID: PMC9219700 DOI: 10.3390/antibiotics11060821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 06/12/2022] [Accepted: 06/14/2022] [Indexed: 01/03/2023] Open
Abstract
Human health is threatened by antibiotic-resistant bacteria and their related infections, which cause thousands of human deaths every year worldwide. Surface waters are vulnerable to human activities and natural processes that facilitate the emergence and spread of antibiotic-resistant bacteria in the environment. This study evaluated the pathways and drivers of antimicrobial resistance (AR) in surface waters. We analyzed antibiotic resistance healthcare-associated infection (HAI) data reported to the CDC's National Healthcare Safety Network to determine the number of antimicrobial-resistant pathogens and their isolates detected in healthcare facilities. Ten pathogens and their isolates associated with HAIs tested resistant to the selected antibiotics, indicating the role of healthcare facilities in antimicrobial resistance in the environment. The analyzed data and literature research revealed that healthcare facilities, wastewater, agricultural settings, food, and wildlife populations serve as the major vehicles for AR in surface waters. Antibiotic residues, heavy metals, natural processes, and climate change were identified as the drivers of antimicrobial resistance in the aquatic environment. Food and animal handlers have a higher risk of exposure to resistant pathogens through ingestion and direct contact compared with the general population. The AR threat to public health may grow as pathogens in aquatic systems adjust to antibiotic residues, contaminants, and climate change effects. The unnecessary use of antibiotics increases the risk of AR, and the public should be encouraged to practice antibiotic stewardship to decrease the risk.
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Affiliation(s)
- Joseph Kusi
- Department of Environmental Sciences, Southern Illinois University Edwardsville, 44 Circle Drive, Campus Box 1099, Edwardsville, IL 62026, USA; (C.O.O.); (A.E.O.)
| | - Catherine Oluwalopeye Ojewole
- Department of Environmental Sciences, Southern Illinois University Edwardsville, 44 Circle Drive, Campus Box 1099, Edwardsville, IL 62026, USA; (C.O.O.); (A.E.O.)
| | - Akinloye Emmanuel Ojewole
- Department of Environmental Sciences, Southern Illinois University Edwardsville, 44 Circle Drive, Campus Box 1099, Edwardsville, IL 62026, USA; (C.O.O.); (A.E.O.)
| | - Isaac Nwi-Mozu
- Schmid College of Science and Technology, Chapman University, One University Drive, Orange, CA 92866, USA;
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Kusi J, Maier KJ. Evaluation of silver nanoparticle acute and chronic effects on freshwater amphipod (Hyalella azteca). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2022; 242:106016. [PMID: 34788726 DOI: 10.1016/j.aquatox.2021.106016] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 10/02/2021] [Accepted: 11/01/2021] [Indexed: 06/13/2023]
Abstract
Silver nanoparticles (AgNPs) are known to cause ecotoxic effects, but there are no existing derived ambient water quality criteria (AWQC) for these nanomaterials to protect freshwater aquatic life due to insufficient toxicological data. We exposed Hyalella azteca to silver nitrate, citrate-coated AgNPs (citrate-AgNPs), and polyvinylpyrrolidone-coated AgNPs (PVP-AgNPs) in a 10-day and 28-day water-only static renewal system with clean sand as a substrate for the amphipods and compared their point estimates with the United States Environmental Protection Agency (USEPA) AWQC for silver. We observed that all treatments decreased the survival, growth, and biomass of H. azteca, and the order of toxicity was AgNO3 > citrate-AgNPs > PVP-AgNPs. The LC50s of AgNO3, citrate-AgNPs, and PVP-AgNPs were 3.0, 9.6, and 296.0 µg total Ag L-1, respectively, for the acute exposure and 2.4, 3.2, and 61.4 µg total Ag L-1, respectively, for the chronic exposure. Acute and chronic EC20s of citrate-AgNPs ranged from 0.5 to 3.5 µg total Ag L-1 while that of PVP-AgNPs ranged from 31.2 to 175 µg total Ag L-1 for growth and biomass. Both Ag+ released from AgNPs and the nanoparticles contributed to the observed toxicity. The dissolution and toxicity of AgNPs were influenced by surface coating agents, particle size, and surface charge. Most point estimates for AgNPs were above AWQC for silver (4.1 µg L-1) and the lowest concentration (0.12 µg/L) at which Ag is expected to cause chronic adverse effects to freshwater aquatic life. Our study demonstrates that the current AWQC for silver, in general, is protective of freshwater aquatic life against AgNPs tested in the present study.
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Affiliation(s)
- Joseph Kusi
- Department of Natural Sciences and Environmental Health, Mississippi Valley State University, Itta Bena, MS 38941, United States; Department of Environmental Health, East Tennessee State University, Johnson City, Tennessee 37614, United States.
| | - Kurt J Maier
- Department of Natural Sciences and Environmental Health, Mississippi Valley State University, Itta Bena, MS 38941, United States; Department of Environmental Health, East Tennessee State University, Johnson City, Tennessee 37614, United States
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Németh I, Molnár S, Vaszita E, Molnár M. The Biolog EcoPlate™ Technique for Assessing the Effect of Metal Oxide Nanoparticles on Freshwater Microbial Communities. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1777. [PMID: 34361164 PMCID: PMC8308119 DOI: 10.3390/nano11071777] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 11/16/2022]
Abstract
The application of Biolog EcoPlate™ for community-level physiological profiling of soils is well documented; however, the functional diversity of aquatic bacterial communities has been hardly studied. The objective of this study was to investigate the applicability of the Biolog EcoPlate™ technique and evaluate comparatively the applied endpoints, for the characterisation of the effects of metal oxide nanoparticles (MONPs) on freshwater microbial communities. Microcosm experiments were run to assess the effect of nano ZnO and nano TiO2 in freshwater at 0.8-100 mg/L concentration range. The average well colour development, substrate average well colour development, substrate richness, Shannon index and evenness, Simpson index, McIntosh index and Gini coefficient were determined to quantify the metabolic capabilities and functional diversity. Comprehensive analysis of the experimental data demonstrated that short-term exposure to TiO2 and ZnO NPs affected the metabolic activity at different extent and through different mechanisms of action. TiO2 NPs displayed lower impact on the metabolic profile showing up to 30% inhibition. However, the inhibitory effect of ZnO NPs reached 99% with clearly concentration-dependent responses. This study demonstrated that the McIntosh and Gini coefficients were well applicable and sensitive diversity indices. The parallel use of general metabolic capabilities and functional diversity indices may improve the output information of the ecological studies on microbial communities.
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Affiliation(s)
| | | | | | - Mónika Molnár
- Department of Applied Biotechnology and Food Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, H-1111 Budapest, Hungary; (I.N.); (S.M.); (E.V.)
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