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Tang Z, Song X, Xu M, Yao J, Ali M, Wang Q, Zeng J, Ding X, Wang C, Zhang Z, Liu X. Effects of co-occurrence of PFASs and chlorinated aliphatic hydrocarbons on microbial communities in groundwater: A field study. JOURNAL OF HAZARDOUS MATERIALS 2022; 435:128969. [PMID: 35472535 DOI: 10.1016/j.jhazmat.2022.128969] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 04/05/2022] [Accepted: 04/17/2022] [Indexed: 06/14/2023]
Abstract
The effects of per- and polyfluoroalkyl substances (PFASs) and chlorinated aliphatic hydrocarbons (CAHs) co-contamination on the microbial community in the field have not been studied. In this study, we evaluated the presence of PFASs and CAHs in groundwater collected from a fluorochemical plant (FCP), and carried out Illumina MiSeq sequencing to understand the impact of mixed PFASs and CAHs on the indigenous microbial community. The sum concentrations of 20 PFASs in FCP groundwater ranged from 2.05 to 317.40 μg/L, and the highest PFOA concentration was observed in the deep aquifer (60 m below ground surface), co-contaminated by dense non-aqueous-phase liquid (DNAPL). The existence of PFASs and CAHs co-contamination in groundwater resulted in a considerable decrease in the diversity of microbial communities, while the abundance of metabolisms associated with contaminants biodegradation has increased significantly compared to the background wells. Furthermore, Acinetobacter, Pseudomonas and Arthrobacter were the dominant genera in PFASs and CAHs co-contaminated groundwater. The presence of high concentrations of PFASs and CAHs has been positively associated with the genus of Citreitalea. Finally, geochemical parameters, such as ORP, sulfate and nitrate were the key factors to shape up the structure of the microbial community and sources to rich the abundance of the potential functional bacteria.
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Affiliation(s)
- Zhiwen Tang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xin Song
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Minmin Xu
- Shandong Academy of Environmental Sciences Co., LTD, Jinan 250013, China
| | - Jin Yao
- Zhongke Hualu Soil Remediation Engineering Co., LTD, Dezhou 253500, China
| | - Mukhtiar Ali
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qing Wang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Jun Zeng
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Xiaoyan Ding
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Congjun Wang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Zhuanxia Zhang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xin Liu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
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Slade EM, Kirwan L, Bell T, Philipson CD, Lewis OT, Roslin T. The importance of species identity and interactions for multifunctionality depends on how ecosystem functions are valued. Ecology 2018; 98:2626-2639. [PMID: 28722121 DOI: 10.1002/ecy.1954] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Revised: 03/20/2017] [Accepted: 06/05/2017] [Indexed: 01/06/2023]
Abstract
Studies investigating how biodiversity affects ecosystem functioning increasingly focus on multiple functions measured simultaneously ("multifunctionality"). However, few such studies assess the role of species interactions, particularly under alternative environmental scenarios, despite interactions being key to ecosystem functioning. Here we address five questions of central importance to ecosystem multifunctionality using a terrestrial animal system. (1) Does the contribution of individual species differ for different ecosystem functions? (2) Do inter-species interactions affect the delivery of single functions and multiple functions? (3) Does the community composition that maximizes individual functions also maximize multifunctionality? (4) Is the functional role of individual species, and the effect of interspecific interactions, modified by changing environmental conditions? (5) How do these roles and interactions change under varying scenarios where ecosystem services are weighted to reflect different societal preferences? We manipulated species' relative abundance in dung beetle communities and measured 16 functions contributing to dung decomposition, plant productivity, nutrient recycling, reduction of greenhouse gases, and microbial activity. Using the multivariate diversity-interactions framework, we assessed how changes in species identity, composition, and interspecific interactions affected these functions in combination with an environmental driver (increased precipitation). This allowed us to identify key species and interactions across multiple functions. We then developed a desirability function approach to examine how individual species and species mixtures contribute to a desired state of overall ecosystem functioning. Species contributed unequally to individual functions, and to multifunctionality, and individual functions were maximized by different community compositions. Moreover, the species and interactions important for maintaining overall multifunctionality depended on the weight given to individual functions. Optimal multifunctionality was context-dependent, and sensitive to the valuation of services. This combination of methodological approaches allowed us to resolve the interactions and indirect effects among species that drive ecosystem functioning, revealing how multiple aspects of biodiversity can simultaneously drive ecosystem functioning. Our results highlight the importance of a multifunctionality perspective for a complete assessment of species' functional contributions.
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Affiliation(s)
- Eleanor M Slade
- Department of Zoology, University of Oxford, South Parks Road, Oxford, OX1 3PS, United Kingdom.,Spatial Foodweb Ecology Group, Department of Agricultural Sciences, University of Helsinki, PO Box 27, Latokartanonkaari 5, Helsinki, FI-00014, Finland.,Lancaster Environment Centre, University of Lancaster, Lancaster, United Kingdom
| | - Laura Kirwan
- UCD School of Agriculture and Food Science, UCD, Dublin 4, Ireland
| | - Thomas Bell
- Department of Life Sciences, Imperial College London, Silwood Park Campus, Ascot, SL5 7PY, United Kingdom
| | - Christopher D Philipson
- Ecosystem Management, Department of Environmental Systems Science, Institute of Terrestrial Ecosystems, ETH Zurich, Universitatstrasse 16, Zurich, 8092, Switzerland.,Centre for Environmental Change and Human Resilience, University of Dundee, Dundee, United Kingdom
| | - Owen T Lewis
- Department of Zoology, University of Oxford, South Parks Road, Oxford, OX1 3PS, United Kingdom
| | - Tomas Roslin
- Spatial Foodweb Ecology Group, Department of Agricultural Sciences, University of Helsinki, PO Box 27, Latokartanonkaari 5, Helsinki, FI-00014, Finland.,Department of Ecology, Swedish University of Agricultural Sciences, Box 7044, Uppsala, 750 07, Sweden
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3
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Mikkonen A, Yläranta K, Tiirola M, Dutra LAL, Salmi P, Romantschuk M, Copley S, Ikäheimo J, Sinkkonen A. Successful aerobic bioremediation of groundwater contaminated with higher chlorinated phenols by indigenous degrader bacteria. WATER RESEARCH 2018; 138:118-128. [PMID: 29574199 DOI: 10.1016/j.watres.2018.03.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 03/10/2018] [Accepted: 03/12/2018] [Indexed: 06/08/2023]
Abstract
The xenobiotic priority pollutant pentachlorophenol has been used as a timber preservative in a polychlorophenol bulk synthesis product containing also tetrachlorophenol and trichlorophenol. Highly soluble chlorophenol salts have leaked into groundwater, causing severe contamination of large aquifers. Natural attenuation of higher-chlorinated phenols (HCPs: pentachlorophenol + tetrachlorophenol) at historically polluted sites has been inefficient, but a 4-year full scale in situ biostimulation of a chlorophenol-contaminated aquifer by circulation and re-infiltration of aerated groundwater was remarkably successful: pentachlorophenol decreased from 400 μg L-1 to <1 μg L-1 and tetrachlorophenols from 4000 μg L-1 to <10 μg L-1. The pcpB gene, the gene encoding pentachlorophenol hydroxylase - the first and rate-limiting enzyme in the only fully characterised aerobic HCP degradation pathway - was present in up to 10% of the indigenous bacteria already 4 months after the start of aeration. The novel quantitative PCR assay detected the pcpB gene in situ also in the chlorophenol plume of another historically polluted aquifer with no remediation history. Hotspot groundwater HCPs from this site were degraded efficiently during a 3-week microcosm incubation with one-time aeration but no other additives: from 5400 μg L-1 to 1200 μg L-1 and to 200 μg L-1 in lightly and fully aerated microcosms, respectively, coupled with up to 2400% enrichment of the pcpB gene. Accumulation of lower-chlorinated metabolites was observed in neither in situ remediation nor microcosms, supporting the assumption that HCP removal was due to the aerobic degradation pathway where the first step limits the mineralisation rate. Our results demonstrate that bacteria capable of aerobic mineralisation of xenobiotic pentachlorophenol and tetrachlorophenol can be present at long-term polluted groundwater sites, making bioremediation by simple aeration a viable and economically attractive alternative.
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Affiliation(s)
- Anu Mikkonen
- Department of Environmental Sciences, University of Helsinki, Niemenkatu 73, 15140 Lahti, Finland; Department of Biological and Environmental Science, University of Jyväskylä, Survontie 9 C, 40500 Jyväskylä, Finland.
| | - Kati Yläranta
- Department of Environmental Sciences, University of Helsinki, Niemenkatu 73, 15140 Lahti, Finland
| | - Marja Tiirola
- Department of Biological and Environmental Science, University of Jyväskylä, Survontie 9 C, 40500 Jyväskylä, Finland
| | - Lara Ambrosio Leal Dutra
- Department of Biological and Environmental Science, University of Jyväskylä, Survontie 9 C, 40500 Jyväskylä, Finland
| | - Pauliina Salmi
- Department of Biological and Environmental Science, University of Jyväskylä, Survontie 9 C, 40500 Jyväskylä, Finland
| | - Martin Romantschuk
- Department of Environmental Sciences, University of Helsinki, Niemenkatu 73, 15140 Lahti, Finland; Institute of Environmental Sciences, Kazan Federal University, 420008, Kremlevskaya 18, Kazan, Russia
| | - Shelley Copley
- Cooperative Institute for Research in Environmental Sciences and Molecular, Cellular and Developmental Biology, University of Colorado, CO 80309 Boulder, United States
| | | | - Aki Sinkkonen
- Department of Environmental Sciences, University of Helsinki, Niemenkatu 73, 15140 Lahti, Finland
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Jiao S, Luo Y, Lu M, Xiao X, Lin Y, Chen W, Wei G. Distinct succession patterns of abundant and rare bacteria in temporal microcosms with pollutants. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 225:497-505. [PMID: 28336094 DOI: 10.1016/j.envpol.2017.03.015] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 02/16/2017] [Accepted: 03/07/2017] [Indexed: 05/20/2023]
Abstract
Elucidating the driving forces behind the temporal dynamics of abundant and rare microbes is essential for understanding the assembly and succession of microbial communities. Here, we explored the successional trajectories and mechanisms of abundant and rare bacteria via soil-enrichment subcultures in response to various pollutants (phenanthrene, n-octadecane, and CdCl2) using time-series Illumina sequencing datasets. The results reveal different successional patterns of abundant and rare sub-communities in eighty pollutant-degrading consortia and two original soil samples. A temporal decrease in α-diversity and high turnover rate for β-diversity indicate that deterministic processes are the main drivers of the succession of the abundant sub-community; however, the high cumulative species richness indicates that stochastic processes drive the succession of the rare sub-community. A functional prediction showed that abundant bacteria contribute primary functions to the pollutant-degrading consortia, such as amino acid metabolism, cellular responses to stress, and hydrocarbon degradation. Meanwhile, rare bacteria contribute a substantial fraction of auxiliary functions, such as carbohydrate-active enzymes, fermentation, and homoacetogenesis, which indicates their roles as a source of functional diversity. Our study suggests that the temporal succession of microbes in polluted microcosms is mainly associated with abundant bacteria rather than the high proportion of rare taxa. The major forces (i.e., stochastic or deterministic processes) driving microbial succession could be dependent on the low- or high-abundance community members in temporal microcosms with pollutants.
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Affiliation(s)
- Shuo Jiao
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Yantao Luo
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Mingmei Lu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Xiao Xiao
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Yanbing Lin
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Weimin Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
| | - Gehong Wei
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
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5
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Jiao S, Zhang Z, Yang F, Lin Y, Chen W, Wei G. Temporal dynamics of microbial communities in microcosms in response to pollutants. Mol Ecol 2017; 26:923-936. [PMID: 28012222 DOI: 10.1111/mec.13978] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 12/08/2016] [Indexed: 01/18/2023]
Abstract
Elucidating the mechanisms underlying microbial succession is a major goal of microbial ecology research. Given the increasing human pressure on the environment and natural resources, responses to the repeated introduction of organic and inorganic pollutants are of particular interest. To investigate the temporal dynamics of microbial communities in response to pollutants, we analysed the microbial community structure in batch microcosms that were inoculated with soil bacteria following exposure to individual or combined pollutants (phenanthrene, n-octadecane, phenanthrene + n-octadecane and phenanthrene + n-octadecane + CdCl2 ). Subculturing was performed at 10-day intervals, followed by high-throughput sequencing of 16S rRNA genes. The dynamics of microbial communities in response to different pollutants alone and in combination displayed similar patterns during enrichment. Specifically, the repression and induction of microbial taxa were dominant, and the fluctuation was not significant. The rate of appearance for new taxa and the temporal turnover within microbial communities were higher than the rates reported in other studies of microbial communities in air, water and soil samples. In addition, conditionally rare taxa that were specific to the treatments exhibited higher betweenness centrality values in the co-occurrence network, indicating a strong influence on other interactions in the community. These results suggest that the repeated introduction of pollutants could accelerate microbial succession in microcosms, resulting in the rapid re-equilibration of microbial communities.
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Affiliation(s)
- Shuo Jiao
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Zhengqing Zhang
- Laboratory of Forestry Pests Biological Control, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Fan Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yanbing Lin
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Weimin Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Gehong Wei
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
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6
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Simpanen S, Dahl M, Gerlach M, Mikkonen A, Malk V, Mikola J, Romantschuk M. Biostimulation proved to be the most efficient method in the comparison of in situ soil remediation treatments after a simulated oil spill accident. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:25024-25038. [PMID: 27677992 PMCID: PMC5124059 DOI: 10.1007/s11356-016-7606-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 09/05/2016] [Indexed: 05/04/2023]
Abstract
The use of in situ techniques in soil remediation is still rare in Finland and most other European countries due to the uncertainty of the effectiveness of the techniques especially in cold regions and also due to their potential side effects on the environment. In this study, we compared the biostimulation, chemical oxidation, and natural attenuation treatments in natural conditions and pilot scale during a 16-month experiment. A real fuel spill accident was used as a model for experiment setup and soil contamination. We found that biostimulation significantly decreased the contaminant leachate into the water, including also the non-aqueous phase liquid (NAPL). The total NAPL leachate was 19 % lower in the biostimulation treatment that in the untreated soil and 34 % lower in the biostimulation than oxidation treatment. Soil bacterial growth and community changes were first observed due to the increased carbon content via oil amendment and later due to the enhanced nutrient content via biostimulation. Overall, the most effective treatment for fresh contaminated soil was biostimulation, which enhanced the biodegradation of easily available oil in the mobile phase and consequently reduced contaminant leakage through the soil. The chemical oxidation did not enhance soil cleanup and resulted in the mobilization of contaminants. Our results suggest that biostimulation can decrease or even prevent oil migration in recently contaminated areas and can thus be considered as a potentially safe in situ treatment also in groundwater areas.
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Affiliation(s)
- Suvi Simpanen
- Department of Environmental Sciences, University of Helsinki, Niemenkatu 73, 15140, Lahti, Finland.
| | - Mari Dahl
- Department of Environmental Sciences, University of Helsinki, Niemenkatu 73, 15140, Lahti, Finland
| | - Magdalena Gerlach
- Department of Environmental Sciences, University of Helsinki, Niemenkatu 73, 15140, Lahti, Finland
| | - Anu Mikkonen
- Department of Biological and Environmental Science, University of Jyväskylä, Survontie 9 C, 40014, Jyväskylä, Finland
| | - Vuokko Malk
- Department of Environmental Sciences, University of Helsinki, Niemenkatu 73, 15140, Lahti, Finland
- Mikkeli University of Applied Sciences, Patteristonkatu 3, 50100, Mikkeli, Finland
| | - Juha Mikola
- Department of Environmental Sciences, University of Helsinki, Niemenkatu 73, 15140, Lahti, Finland
| | - Martin Romantschuk
- Department of Environmental Sciences, University of Helsinki, Niemenkatu 73, 15140, Lahti, Finland
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Hamamoto K, Miyahara M, Kouzuma A, Matsumoto A, Yoda M, Ishiguro T, Watanabe K. Evaluation of microbial fuel cells for electricity generation from oil-contaminated wastewater. J Biosci Bioeng 2016; 122:589-593. [DOI: 10.1016/j.jbiosc.2016.03.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 03/30/2016] [Accepted: 03/31/2016] [Indexed: 11/30/2022]
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Jiao S, Chen W, Wang E, Wang J, Liu Z, Li Y, Wei G. Microbial succession in response to pollutants in batch-enrichment culture. Sci Rep 2016; 6:21791. [PMID: 26905741 PMCID: PMC4764846 DOI: 10.1038/srep21791] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 02/01/2016] [Indexed: 11/29/2022] Open
Abstract
As a global problem, environmental pollution is an important factor to shape the microbial communities. The elucidation of the succession of microbial communities in response to pollutants is essential for developing bioremediation procedures. In the present study, ten batches of soil-enrichment subcultures were subjected to four treatments: phenanthrene, n-octadecane, phenanthrene + n-octadecane, or phenanthrene + n-octadecane + CdCl2. Forty pollutant-degrading consortia, corresponding to each batch of the four treatments were obtained. High-throughput sequencing of the 16S rRNA gene revealed that the diversity, richness and evenness of the consortia decreased throughout the subculturing procedure. The well-known hydrocarbon degraders Acinetobacter, Gordonia, Sphingobium, Sphingopyxis, and Castellaniella and several other genera, including Niabella and Naxibacter, were detected in the enriched consortia. The predominant microbes varied and the microbial community in the consortia gradually changed during the successive subculturing depending on the treatment, indicating that the pollutants influenced the microbial successions. Comparison of the networks in the treatments indicated that organic pollutants and CdCl2 affected the co-occurrence patterns in enriched consortia. In conclusion, single environmental factors, such as the addition of nutrients or selection pressure, can shape microbial communities and partially explain the extensive differences in microbial community structures among diverse environments.
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Affiliation(s)
- Shuo Jiao
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling Shaanxi 712100, P. R. China
| | - Weimin Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling Shaanxi 712100, P. R. China
| | - Entao Wang
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, 11340 México, D.F., Mexico
| | - Junman Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling Shaanxi 712100, P. R. China
| | - Zhenshan Liu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling Shaanxi 712100, P. R. China
| | - Yining Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling Shaanxi 712100, P. R. China
| | - Gehong Wei
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling Shaanxi 712100, P. R. China
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Yan L, Sinkko H, Penttinen P, Lindström K. Characterization of successional changes in bacterial community composition during bioremediation of used motor oil-contaminated soil in a boreal climate. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 542:817-25. [PMID: 26556745 DOI: 10.1016/j.scitotenv.2015.10.144] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 10/27/2015] [Accepted: 10/28/2015] [Indexed: 05/20/2023]
Abstract
The widespread use of motor oil makes it a notable risk factor to cause scattered contamination in soil. The monitoring of microbial community dynamics can serve as a comprehensive tool to assess the ecological impact of contaminants and their disappearance in the ecosystem. Hence, a field study was conducted to monitor the ecological impact of used motor oil under different perennial cropping systems (fodder galega, brome grass, galega-brome grass mixture and bare fallow) in a boreal climate zone. Length heterogeneity PCR characterized a successional pattern in bacterial community following oil contamination over a four-year bioremediation period. Soil pH and electrical conductivity were associated with the shifts in bacterial community composition. Crops had no detectable effect on bacterial community composition or complexity. However, the legume fodder galega increased soil microbial biomass, expressed as soil total DNA. Oil contamination induced an abrupt change in bacterial community composition at the early stage, yet the effect did not last as long as the oil in soil. The successional variation in bacterial community composition can serve as a sensitive ecological indicator of oil contamination and remediation in situ.
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Affiliation(s)
- Lijuan Yan
- Department of Environmental Sciences, PO Box 65 (Viikinkaari 2a), 00014, University of Helsinki, Finland.
| | - Hanna Sinkko
- Department of Food and Environmental Sciences, PO Box 56 (Latokartanonkaari 11), 00014, University of Helsinki, Finland
| | - Petri Penttinen
- Department of Environmental Sciences, PO Box 65 (Viikinkaari 2a), 00014, University of Helsinki, Finland
| | - Kristina Lindström
- Department of Environmental Sciences, PO Box 65 (Viikinkaari 2a), 00014, University of Helsinki, Finland
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10
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Slade EM, Roslin T, Santalahti M, Bell T. Disentangling the ‘brown world’ faecal-detritus interaction web: dung beetle effects on soil microbial properties. OIKOS 2015. [DOI: 10.1111/oik.02640] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Eleanor M. Slade
- Dept of Applied Biology, PO Box 27, Latokartanonkaari 5, FI-00014; University of Helsinki; Finland
- Dept of Zoology; Univ. of Oxford; South Parks Road Oxford OX1 3PS UK
| | - Tomas Roslin
- Dept of Applied Biology, PO Box 27, Latokartanonkaari 5, FI-00014; University of Helsinki; Finland
- Dept of Ecology, PO Box 7044; Swedish Univ. of Agricultural Sciences; SE-750 07 Uppsala Sweden
| | - Minna Santalahti
- Dept of Food and Environmental Sciences, PO Box 56, Viikinkaari 9, FI-00014; University of Helsinki; Finland
| | - Thomas Bell
- Dept of Life Sciences; Imperial College London, Silwood Park Campus; Ascot SL5 7PY UK
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Mikkonen A, Santalahti M, Lappi K, Pulkkinen AM, Montonen L, Suominen L. Bacterial and archaeal communities in long-term contaminated surface and subsurface soil evaluated through coextracted RNA and DNA. FEMS Microbiol Ecol 2014; 90:103-14. [PMID: 24986450 DOI: 10.1111/1574-6941.12376] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 06/10/2014] [Accepted: 06/25/2014] [Indexed: 11/28/2022] Open
Abstract
Soil RNA and DNA were coextracted along a contamination gradient at a landfarming field with aged crude oil contamination to investigate pollution-dependent differences in 16S rRNA and rRNA gene pools. Microbial biomass correlated with nucleic acid yields as well as bacterial community change, indicating that the same factors controlled community size and structure. In surface soil, bacterial community evenness, estimated through length heterogeneity PCR (LH-PCR) fingerprinting, appeared higher for RNA-based than for DNA-based communities. The RNA-based community profiles resembled the DNA-based communities of soil with a lower contamination level. Cloning-based identification of bacterial hydrocarbon-degrading taxa in the RNA pool, representing the viable community with high protein synthesis potential, indicated that decontamination processes still continue. Analyses of archaea revealed that only Thaumarchaeota were present in the aerobic samples, whereas more diverse communities were found in the compacted subsurface soil with more crude oil. For subsurface bacteria, hydrocarbon concentration explained neither the community structure nor the difference between RNA-based and DNA-based communities. However, rRNA of bacterial taxa associated with syntrophic and sulphate-reducing alkane degradation was detected. Although the same prokaryotic taxa were identified in DNA and RNA, comparison of the two nucleic acid pools can aid in the assessment of past and future restoration success.
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Affiliation(s)
- Anu Mikkonen
- Department of Food and Environmental Sciences, Division of Microbiology and Biotechnology, University of Helsinki, Helsinki, Finland
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Sagarkar S, Nousiainen A, Shaligram S, Björklöf K, Lindström K, Jørgensen KS, Kapley A. Soil mesocosm studies on atrazine bioremediation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2014; 139:208-216. [PMID: 24721596 DOI: 10.1016/j.jenvman.2014.02.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 02/14/2014] [Accepted: 02/17/2014] [Indexed: 06/03/2023]
Abstract
Accumulation of pesticides in the environment causes serious issues of contamination and toxicity. Bioremediation is an ecologically sound method to manage soil pollution, but the bottleneck here, is the successful scale-up of lab-scale experiments to field applications. This study demonstrates pilot-scale bioremediation in tropical soil using atrazine as model pollutant. Mimicking field conditions, three different bioremediation strategies for atrazine degradation were explored. 100 kg soil mesocosms were set-up, with or without atrazine application history. Natural attenuation and enhanced bioremediation were tested, where augmentation with an atrazine degrading consortium demonstrated best pollutant removal. 90% atrazine degradation was observed in six days in soil previously exposed to atrazine, while soil without history of atrazine use, needed 15 days to remove the same amount of amended atrazine. The bacterial consortium comprised of 3 novel bacterial strains with different genetic atrazine degrading potential. The progress of bioremediation was monitored by measuring the levels of atrazine and its intermediate, cyanuric acid. Genes from the atrazine degradation pathway, namely, atzA, atzB, atzD, trzN and trzD were quantified in all mesocosms for 60 days. The highest abundance of all target genes was observed on the 6th day of treatment. trzD was observed in the bioaugmented mesocosms only. The bacterial community profile in all mesocosms was monitored by LH-PCR over a period of two months. Results indicate that the communities changed rapidly after inoculation, but there was no drastic change in microbial community profile after 1 month. Results indicated that efficient bioremediation of atrazine using a microbial consortium could be successfully up-scaled to pilot scale.
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Affiliation(s)
- Sneha Sagarkar
- Environmental Genomics Division, National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg, Nagpur 440 020, India
| | - Aura Nousiainen
- Finnish Environment Institute, PO Box 140, FI-00251 Helsinki, Finland
| | - Shraddha Shaligram
- Environmental Genomics Division, National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg, Nagpur 440 020, India
| | - Katarina Björklöf
- Finnish Environment Institute, PO Box 140, FI-00251 Helsinki, Finland
| | - Kristina Lindström
- Department of Food and Environmental Sciences, Division of Microbiology, University of Helsinki, FI-00014 Helsinki, Finland
| | | | - Atya Kapley
- Environmental Genomics Division, National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg, Nagpur 440 020, India.
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Mikkonen A, Hakala KP, Lappi K, Kondo E, Vaalama A, Suominen L. Changes in hydrocarbon groups, soil ecotoxicity and microbiology along horizontal and vertical contamination gradients in an old landfarming field for oil refinery waste. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2012; 162:374-380. [PMID: 22243888 DOI: 10.1016/j.envpol.2011.12.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Revised: 11/25/2011] [Accepted: 12/03/2011] [Indexed: 05/31/2023]
Abstract
Horizontal and vertical contaminant gradients in an old landfarming field for oil refinery waste were characterised with the aim to assess parallel changes in hydrocarbon groups and general, microbiological and ecotoxicological soil characteristics. In the surface soil polar compounds were the most prevalent fraction of heptane-extractable hydrocarbons, superseding GC-FID-resolvable and high-molar-mass aliphatics and aromatics, but there was no indication of their relatively higher mobility or toxicity. The size of the polar fraction correlated poorly with soil physical, chemical and microbiological properties, which were better explained by the total heptane-extractable and total petroleum hydrocarbons (TPH). Deleterious effects on soil microbiology in situ were observed at surprisingly low TPH concentrations (0.3%). Due to the accumulation of polar and complexed degradation products, TPH seems an insufficient measure to assess the quality and monitor the remediation of soil with weathered hydrocarbon contamination.
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Affiliation(s)
- Anu Mikkonen
- Department of Food and Environmental Sciences, Division of Microbiology, University of Helsinki, Helsinki, Finland.
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