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Ma W, Lin M, Shen P, Chi H, Zhang W, Zhu J, Tian S, Liu P. Exploring methanogenic archaea and their thermal responses in the glacier-fed stream sediments of Rongbuk River basin, Mt. Everest. FEMS Microbiol Ecol 2025; 101:fiaf044. [PMID: 40275524 PMCID: PMC12038898 DOI: 10.1093/femsec/fiaf044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2024] [Revised: 04/06/2025] [Accepted: 04/21/2025] [Indexed: 04/26/2025] Open
Abstract
Glacier-fed streams (GFS) are emergent sources of greenhouse gas methane, and methanogenic archaea in sediments contribute largely to stream methane emissions. However, little is known about the methanogenic communities in GFS sediments and their key environmental driving factors. This study analyzed stream sediments from the Rongbuk River basin on Mt. Everest for methanogenic communities and their temperature responses through anaerobic microcosm incubations at 5°C and 15°C. Diverse methanogens were identified, including acetoclastic, hydrogenotrophic, and hydrogen-dependent methylotrophic types. Substantial methane and CO2 production were detected across altitudes and increased significantly at 15°C, with both methane and CO2 production rates negatively correlated with altitude. The temperature sensitivity of CO2 production also showed a negative altitude correlation. Methanogens increased substantially over long-term incubation, dominating the archaeal community. At 15°C, the relative abundance of several methanogenic groups was strongly correlated with altitude, with positive correlations observed for Methanomassiliicoccaceae and Methanoregulaceae, and negative correlations for Methanocellaceae, respectively. Besides altitude, phosphorus, carbon to nitrogen ratio, and pH also affected methanogenic structure, methane and CO2 production, and temperature sensitivities. This study offers new insights into methanogens and methane production in GFS sediments, improving our understanding of GFS carbon cycling and its potential responses to climate change.
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Affiliation(s)
- Wei Ma
- Center for Pan-third Pole Environment, Lanzhou University, Lanzhou 730000, China
- Key Laboratory of Pan-third Pole Biogeochemical Cycling, Gansu Province 730000, China
| | - Miao Lin
- Center for Pan-third Pole Environment, Lanzhou University, Lanzhou 730000, China
- Key Laboratory of Pan-third Pole Biogeochemical Cycling, Gansu Province 730000, China
| | - Peihua Shen
- Center for Pan-third Pole Environment, Lanzhou University, Lanzhou 730000, China
- Key Laboratory of Pan-third Pole Biogeochemical Cycling, Gansu Province 730000, China
| | - Hongfei Chi
- Center for Pan-third Pole Environment, Lanzhou University, Lanzhou 730000, China
- Key Laboratory of Pan-third Pole Biogeochemical Cycling, Gansu Province 730000, China
| | - Weizhen Zhang
- Center for Pan-third Pole Environment, Lanzhou University, Lanzhou 730000, China
- Key Laboratory of Pan-third Pole Biogeochemical Cycling, Gansu Province 730000, China
- Chayu Monsoon Corridor Observation and Research Station for Multi-Sphere Changes, Xizang Autonomous Region, Chayu 860600, China
| | - Jingyi Zhu
- Center for Pan-third Pole Environment, Lanzhou University, Lanzhou 730000, China
- Key Laboratory of Pan-third Pole Biogeochemical Cycling, Gansu Province 730000, China
| | - Shaoyi Tian
- Center for Pan-third Pole Environment, Lanzhou University, Lanzhou 730000, China
- Key Laboratory of Pan-third Pole Biogeochemical Cycling, Gansu Province 730000, China
| | - Pengfei Liu
- Center for Pan-third Pole Environment, Lanzhou University, Lanzhou 730000, China
- Key Laboratory of Pan-third Pole Biogeochemical Cycling, Gansu Province 730000, China
- Chayu Monsoon Corridor Observation and Research Station for Multi-Sphere Changes, Xizang Autonomous Region, Chayu 860600, China
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Biswas B, Joseph A, Parveen N, Ranjan VP, Goel S, Mandal J, Srivastava P. Contamination of per- and poly-fluoroalkyl substances in agricultural soils: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2025; 380:124993. [PMID: 40120441 DOI: 10.1016/j.jenvman.2025.124993] [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: 07/05/2024] [Revised: 02/10/2025] [Accepted: 03/13/2025] [Indexed: 03/25/2025]
Abstract
Numerous reviews have focused on the chemistry, fate and transport, and remediation of per- and poly-fluoroalkyl substances (PFAS) across various environmental media. However, there remains a significant gap in the literature regarding a comprehensive review specifically addressing PFAS contamination within agricultural soils. Recognizing the threat PFAS pose to ecosystems and human health, this review critically examines the sources of PFAS in agricultural environments, their uptake and translocation within plant systems, and recent advancements in soil remediation techniques. PFAS ingress into agricultural soils primarily occurs through the application of biowastes, wastewater, and pesticides, necessitating a thorough examination of their pathways and impacts. Factors such as carbon chain length, salinity, temperature, and pH levels affect PFAS uptake and distribution within plants, ultimately influencing their transfer through the food web. Moreover, this review explores a range of physical, chemical, and biological strategies currently employed for the remediation of PFAS-contaminated agricultural soils.
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Affiliation(s)
- Bishwatma Biswas
- Environmental Engineering and Management, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721 302, India.
| | - Anuja Joseph
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721 302, India.
| | - Naseeba Parveen
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721 302, India; Civil Engineering Department, National Institute of Technology Mizoram, Aizawl, Mizoram, 796012, India.
| | - Ved Prakash Ranjan
- Environmental Engineering and Management, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721 302, India.
| | - Sudha Goel
- Environmental Engineering and Management, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721 302, India; School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721 302, India.
| | - Jajati Mandal
- School of Science, Engineering and Environment, University of Salford, Salford, United Kingdom; Commonwealth Scientific and Industrial Research Organization (CSIRO), Environment, Industry Environments Program, Waite Campus, Urrbrae, SA, 5064, Australia.
| | - Prashant Srivastava
- Commonwealth Scientific and Industrial Research Organization (CSIRO), Environment, Industry Environments Program, Waite Campus, Urrbrae, SA, 5064, Australia.
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Zhang Z, Liu Z, Coulon F, Luo G, Wang Q, Gao X, Li Z, Song X. Co-occurrence of PFASs, TPHs, and BTEX in subsurface soils: Impacts on native microbial communities and implications for bioremediation. ENVIRONMENTAL RESEARCH 2025; 267:120650. [PMID: 39694433 DOI: 10.1016/j.envres.2024.120650] [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: 09/03/2024] [Revised: 12/13/2024] [Accepted: 12/16/2024] [Indexed: 12/20/2024]
Abstract
This study investigates the co-occurrence of per- and polyfluoroalkyl substances (PFASs), petroleum hydrocarbons (TPHs) and benzene, toluene, ethylbenzene, and xylene (BTEX) and their effects on the indigenous microbial communities in soils at a contaminated site with a history of petroleum refinery operations. PFASs concentrations were in the range of 5.65-6.73 ng/g, and fluorooctane sulfonate (PFOS) and perfluorobutane sulfonic acid (PFBS) were the dominating compounds. No significant difference was observed in the PFASs concentration profiles between the site and background locations, indicating that PFASs detected in the soil samples were mainly contributed from non-point sources, due to the long-distance transport of PFASs in the region. The concentrations of TPHs and BTEX ranged from 227 to 72,360 mg/kg and 0.06-2109.77 mg/kg, respectively, mainly contributed by the historical refinery activities. The presence of PFASs, TPHs, and BTEX significantly impacted soil microbial community diversity and abundance, altering microbial compositions and enriching bacteria with higher resistance or metabolic capabilities against contamination. Strong correlations were observed between TPHs and its degraders such as Pseudomonas, Azoarcus, and Polaromonas. Significant positive relationship between PFASs and Trichlorobacter implied the potential defluorination capabilities of Trichlorobacter, warranting further investigation. Moreover, the higher energy metabolism including carbon, nitrogen and sulfur metabolisms and higher abundance of metabolic enzymes for alkane, cyclohexane and toluene in the refinery site revealed the potential occurrence of natural biodegradation of contaminants with indigenous microbial community. These findings highlight the complexity of sites contaminated with a mixture of traditional and emerging contaminants, providing valuable insights into the potential for biodegradation of mixed contaminants and underscoring the need for integrated approaches in environmental remediation strategies. This study contributes to understanding the ecological impacts of co-occurring contaminants and emphasizes the importance of considering multiple contaminant types in environmental risk assessments and remediation efforts.
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Affiliation(s)
- Zhuanxia Zhang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 211135, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zeliang Liu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 211135, China
| | - Frederic Coulon
- School of Water, Energy and Environment, Cranfield University, Cranfield, MK43 0AL, UK
| | - Gubai Luo
- Center Environmental Protection Technology Co., LTD, Beijing, 100176, China
| | - Qing Wang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 211135, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Xinyu Gao
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 211135, China
| | - Zhongyuan Li
- China Construction 8th Engineering Division Corp., LTD, Shanghai, 200122, China
| | - Xin Song
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 211135, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
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Reid CJ, Farrell M, Kirby JK. Microbial communities in biosolids-amended soils: A critical review of high-throughput sequencing approaches. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2025; 375:124203. [PMID: 39854900 DOI: 10.1016/j.jenvman.2025.124203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2024] [Revised: 01/07/2025] [Accepted: 01/17/2025] [Indexed: 01/27/2025]
Abstract
Sustainable reuse of treated wastewater sludge or biosolids in agricultural production requires comprehensive understanding of their risks and benefits. Microbes are central mediators of many biosolids-associated risks and benefits, however understanding of their responses to biosolids remains minimal. Application of biosolids to soils amounts to a coalescence of two distinct microbial communities adapted to vastly different matrices. High-throughput DNA and RNA sequencing (HTS) approaches are required to accurately describe the compositional and functional outcomes of this process as they currently provide the highest possible resolution to deal with complex community-scale phenomena. Furthermore, linkage of HTS data to physicochemical and functional data can reveal biotic and abiotic drivers of coalescence, impacts of biosolids-borne contaminants and the collective downstream implications for soil and plant health. Here we review the current body of literature examining microbial communities in biosolids-amended soils using HTS of total community DNA and RNA. We provide a critical synthesis of soil microbial community composition and functional responses, the physical, chemical and biological drivers of these responses, and the influence of three major biosolids-borne anthropogenic contaminants of concern; antimicrobials and antimicrobial resistance genes, plastics, and per- and polyfluoroalkyl substances (PFAS). Finally, we identify methodological limitations and outstanding research questions precluding a holistic understanding of microbial responses in biosolids-amended soils and envision future research whereby sequence-based microbial ecology is integrated with soil, plant, and contaminant data to preserve soil health, support plant productivity, and remediate contaminants.
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Affiliation(s)
- Cameron J Reid
- Commonwealth Scientific and Industrial Research Organisation, Environment Research Unit, Urrbrae, South Australia, Australia.
| | - Mark Farrell
- Commonwealth Scientific and Industrial Research Organisation, Agriculture and Food Research Unit, Urrbrae, South Australia, Australia
| | - Jason K Kirby
- Commonwealth Scientific and Industrial Research Organisation, Environment Research Unit, Urrbrae, South Australia, Australia
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5
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Yashir N, Sun Q, Zhang X, Ma M, Wang D, Feng Y, Song X. Co-occurrence of microplastics, PFASs, antibiotics, and antibiotic resistance genes in groundwater and their composite impacts on indigenous microbial communities: A field study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2025; 961:178373. [PMID: 39793130 DOI: 10.1016/j.scitotenv.2025.178373] [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: 09/29/2024] [Revised: 12/07/2024] [Accepted: 01/01/2025] [Indexed: 01/13/2025]
Abstract
There is a major gap in the occurrence of mixed emerging contaminants, which hinders our efforts in exploring their behaviors and transport in environmental media, as well as their toxicity to human and ecosystem. This study assessed the occurrence and their correlations of mixed contamination by microplastics (MPs), per- and polyfluoroalkyl substances (PFASs), antibiotics, and antibiotic resistance genes (ARGs) in groundwater collected from a pharmaceutical and chemical industrial park. MPs, PFASs, antibiotics and ARGs were detected at all monitoring wells. The total concentration range of MPs and 20 PFASs were 693-1032 pieces/L and 577.47-2982.45 ng/L, respectively, with perfluorooctanoic acid (PFOA) being the most prevalent compound among PFASs in groundwater. The abundance of detected target antibiotics and ARGs ranged from 1.97 to 30.65 ng/L and from 2.65 × 102 to 7.53 × 105 copies/mL, respectively. MPs and PFASs have a significant positive correlation, yet interestingly, no correlation was found between antibiotics and ARGs. In addition, the relatively high abundance of integron intI1 detected in the study area illustrated the potential horizontal transfer risk of ARGs in the subsurface. Furthermore, the effects of these mixed emerging contaminants on the indigenous microbial communities were elucidated. The coexistence of MPs, PFASs, antibiotics, and ARGs led to the enrichment of species that were tolerant to pollutants. Specifically, MPs, PFASs and ARGs were found to be positively correlated with Acinetobacter, unclassified_f__Comamonadaceae, Pseudomonas, Simplicispira and Proteiniphilum, while antibiotics were positively associated with Paenisporosarcina and Arthrobacter. Moreover, geochemical parameters such as oxidation-reduction potential and nitrate also played a key role in shaping the microbial community structure. The co-occurrence of mixed emerging contaminants highlighted in this study underscores the urgent need for comprehensive environmental monitoring, systematic toxicity assessments, and stricter regulatory frameworks. In addition, it offers insights in the development of effective bioremediation strategies to mitigate their impacts on both ecosystems and public health.
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Affiliation(s)
- Noman Yashir
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 211135, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qi Sun
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 211135, China
| | - Xiqian Zhang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 211135, China
| | - Min Ma
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 211135, China
| | - Dong Wang
- Jiangsu Environmental Engineering Technology Co., Ltd., Nanjing 210019, China
| | - Yasong Feng
- Jiangsu Provincial Academy of Environmental Science, Nanjing 210036, China
| | - Xin Song
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 211135, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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6
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Zhang H, Shui J, Li C, Ma J, He F, Zhao D. Diversity, composition, and assembly processes of bacterial communities within per- and polyfluoroalkyl substances (PFAS)-contained urban lake sediments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 957:177625. [PMID: 39566639 DOI: 10.1016/j.scitotenv.2024.177625] [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: 05/24/2024] [Revised: 10/01/2024] [Accepted: 11/16/2024] [Indexed: 11/22/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are widespread, highly persistent, and bio-accumulative compounds that are increasingly found in the sediments of aquatic systems. Given this accumulation and concerns regarding the environmental impacts of PFAS, their influence on sedimentary bacterial communities remains inadequately studied. Here, we investigated the concentrations of 17 PFAS in sediments from six urban lakes in Nanjing, China, and assessed their effects on the diversity, composition, potential interactions, and assembly mechanisms of sedimentary bacterial communities. Sediment concentrations of PFAS ranged from 4.70 to 5.28 ng·g-1 dry weight. The high concentrations of the short-chain perfluorobutanesulfonic acid (PFBS) suggested its substitution for the long-chain perfluorooctanesulfonic acid (PFOS). As alternatives to long-chain PFAS, short-chain PFAS had similar effects on bacterial communities. The short-chain perfluoropentanoic acid (PFPeA) and the long-chain perfluorotridecanoic acid (PFTrDA) were the most important PFAS related to the ecological patterns of the co-occurrence network and may alter the composition of the sedimentary bacterial communities in the urban lakes. The Anaerolineaceae family represented as keystone bacteria within the PFAS-affected bacterial co-occurrence network. Deterministic processes (65.9 %), particularly homogeneous selection (63.2 %), were the dominant process driving bacterial community assembly. PFAS promoted the phylogenetic clustering and influenced the community dispersal capabilities to shape bacterial community assembly. This study provides a comprehensive analysis of PFAS distribution in sediments across six urban lakes in Nanjing and provides novel insights into the effects of PFAS on sedimentary bacterial communities. Further research is required to elucidate the mechanisms underlying the impacts of PFAS on microbial communities and to evaluate their broader ecological consequences.
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Affiliation(s)
- Hongjie Zhang
- Ministry of Ecology and Environment, Nanjing Institute of Environment Sciences, Nanjing 210042, China; Joint International Research Laboratory of Global Change and Water Cycle, The National Key Laboratory of Water Disaster Prevention, Hohai University, Nanjing 210098, China
| | - Jian Shui
- Ministry of Ecology and Environment, Nanjing Institute of Environment Sciences, Nanjing 210042, China; Joint International Research Laboratory of Global Change and Water Cycle, The National Key Laboratory of Water Disaster Prevention, Hohai University, Nanjing 210098, China
| | - Chaoran Li
- College of Marine Science and Engineering, Nanjing Normal University, Nanjing 210023, China
| | - Jie Ma
- Ministry of Ecology and Environment, Nanjing Institute of Environment Sciences, Nanjing 210042, China
| | - Fei He
- Ministry of Ecology and Environment, Nanjing Institute of Environment Sciences, Nanjing 210042, China; Joint International Research Laboratory of Global Change and Water Cycle, The National Key Laboratory of Water Disaster Prevention, Hohai University, Nanjing 210098, China.
| | - Dayong Zhao
- Joint International Research Laboratory of Global Change and Water Cycle, The National Key Laboratory of Water Disaster Prevention, Hohai University, Nanjing 210098, China
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Li M, Zhao X, Yan P, Xie H, Zhang J, Wu S, Wu H. A review of per- and polyfluoroalkyl substances (PFASs) removal in constructed wetlands: Mechanisms, enhancing strategies and environmental risks. ENVIRONMENTAL RESEARCH 2024; 262:119967. [PMID: 39260718 DOI: 10.1016/j.envres.2024.119967] [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: 07/21/2024] [Revised: 08/26/2024] [Accepted: 09/07/2024] [Indexed: 09/13/2024]
Abstract
PER: Polyfluoroalkyl substances (PFASs), typical persistent organic pollutants detected in various water environments, have attracted widespread attention due to their undesirable effects on ecology and human health. Constructed wetlands (CWs) have emerged as a promising, cost-effective, and nature-based solution for removing persistent organic pollutants. This review summarizes the removal performance of PFASs in CWs, underlying PFASs removal mechanisms, and influencing factors are also discussed comprehensively. Furthermore, the environmental risks of PFASs-enriched plants and substrates in CWs are analyzed. The results show that removal efficiencies of total PFASs in various CWs ranged from 21.3% to 98%. Plant uptake, substrate absorption and biotransformation are critical pathways in CWs for removing PFASs, which can be influenced by the physiochemical properties of PFASs, operation parameters, environmental factors, and other pollutants. Increasing dissolved oxygen supply and replacing traditional substrates in CWs, and combining CWs with other technologies could significantly improve PFASs removal. Further, CWs pose relatively lower ecological and environmental risks in removing PFASs, which indicates CWs could be an alternative solution for controlling PFASs in aquatic environments.
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Affiliation(s)
- Mingjun Li
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Qingdao 266237, PR China
| | - Xin Zhao
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Qingdao 266237, PR China; College of Water Sciences, Beijing Normal University, Beijing, 100875, PR China
| | - Peihao Yan
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Qingdao 266237, PR China
| | - Huijun Xie
- Environmental Research Institute, Shandong University, Qingdao 266237, PR China
| | - Jian Zhang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Qingdao 266237, PR China; College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014, PR China
| | - Suqing Wu
- School of Life and Environmental Science, Wenzhou University, Wenzhou, Zhejiang 325035, PR China.
| | - Haiming Wu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Qingdao 266237, PR China.
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Huang H, Lyu X, Xiao F, Fu J, Xu H, Wu J, Sun Y. Three-year field study on the temporal response of soil microbial communities and functions to PFOA exposure. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:135008. [PMID: 38943893 DOI: 10.1016/j.jhazmat.2024.135008] [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: 01/20/2024] [Revised: 06/13/2024] [Accepted: 06/21/2024] [Indexed: 07/01/2024]
Abstract
Contamination of per- and polyfluoroalkyl substances (PFAS) poses a significant threat to soil ecosystem health, yet there remains a lack of understanding regarding the responses of soil microbial communities to prolonged PFAS exposure in field conditions. This study involved a three-year field investigation to track changes in microbial communities and functions in soil subjected to the contamination of a primary PFAS, perfluorooctanoic acid (PFOA). Results showed that PFOA exposure altered soil bacterial and fungal communities in terms of diversity, composition, and structure. Notably, certain bacterial communities with a delayed reaction to PFOA contamination showed the most significant response after one year of exposure. Fungal communities were sensitive to PFOA in soil, exhibiting significant responses within just four months of exposure. After two years, the impact of PFOA on both bacterial and fungal communities was lessened, likely due to the long-term adaptation of microbial communities to PFOA. Moreover, PFOA exposure notably inhibited alkaline phosphatase activity and reduced certain phosphorus cycling-related functional genes after three years of exposure, suggesting potential disruptions in soil fertility. These new insights advance our understanding of the long-term effects of PFOA on soil microbial communities and functions at a field scale.
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Affiliation(s)
- Hai Huang
- School of Earth Sciences and Engineering, Hydrosciences Department, Nanjing University, Nanjing 210023, China
| | - Xueyan Lyu
- School of Hydrology and Water Resources, Nanjing University of Information Science and Technology, Nanjing 210044, China.
| | - Feng Xiao
- Department of Civil and Environmental Engineering, University of Missouri, Columbia, MO 65211, USA
| | - Jiaju Fu
- School of Earth Sciences and Engineering, Hydrosciences Department, Nanjing University, Nanjing 210023, China
| | - Hongxia Xu
- School of Earth Sciences and Engineering, Hydrosciences Department, Nanjing University, Nanjing 210023, China
| | - Jichun Wu
- School of Earth Sciences and Engineering, Hydrosciences Department, Nanjing University, Nanjing 210023, China; Technology Innovation Center for Ecological Monitoring & Restoration Project on Land (Arable), Nanjing 210018, China
| | - Yuanyuan Sun
- School of Earth Sciences and Engineering, Hydrosciences Department, Nanjing University, Nanjing 210023, China; Technology Innovation Center for Ecological Monitoring & Restoration Project on Land (Arable), Nanjing 210018, China.
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Davis SN, Klumker SM, Mitchell AA, Coppage MA, Labonté JM, Quigg A. Life in the PFAS lane: The impact of perfluoroalkyl substances on photosynthesis, cellular exudates, nutrient cycling, and composition of a marine microbial community. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:171977. [PMID: 38547969 DOI: 10.1016/j.scitotenv.2024.171977] [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: 01/03/2024] [Revised: 03/23/2024] [Accepted: 03/23/2024] [Indexed: 04/12/2024]
Abstract
Perfluoroalkyl substances (PFAS) are of great ecological concern, however, exploration of their impact on bacteria-phytoplankton consortia is limited. This study employed a bioassay approach to investigate the effect of unary exposures of increasing concentrations of PFAS (perfluorooctane sulfonate (PFOS) and 6:2 fluorotelomer sulfonate (6:2 FTS)) on microbial communities from the northwestern Gulf of Mexico. Each community was examined for changes in growth and photophysiology, exudate production and shifts in community structure (16S and 18S rRNA genes). 6:2 FTS did not alter the growth or health of phytoplankton communities, as there were no changes relative to the controls (no PFOS added). On the other hand, PFOS elicited significant phototoxicity (p < 0.05), altering PSII antennae size, lowering PSII connectivity, and decreasing photosynthetic efficiency over the incubation (four days). PFOS induced a cellular protective response, indicated by significant increases (p < 0.001) in the release of transparent exopolymer particles (TEP) compared to the control. Eukaryotic communities (18S rRNA gene) changed substantially (p < 0.05) and to a greater extent than prokaryotic communities (16S rRNA gene) in PFOS treatments. Community shifts were concentration-dependent for eukaryotes, with the low treatment (5 mg/L PFOS) dominated by Coscinodiscophyceae (40 %), and the high treatment (30 mg/L PFOS) marked by a Trebouxiophyceae (50 %) dominance. Prokaryotic community shifts were not concentration dependent, as both treatment levels became depleted in Cyanobacteriia and were dominated by members of the Bacteroidia, Gammaproteobacteria, and Alphaproteobacteria classes. Further, PFOS significantly decreased (p < 0.05) the Shannon diversity and Pielou's evenness across treatments for eukaryotes, and in the low treatment (5 mg/L PFOS) for prokaryotes. These findings show that photophysiology was not impacted by 6:2 FTS but PFOS elicited toxicity that impacted photosynthesis, exudate release, and community composition. This research is crucial in understanding how PFOS impacts microbial communities.
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Affiliation(s)
- Sarah N Davis
- Department of Marine Biology, Texas A&M University at Galveston, 200 Seawolf Parkway, Galveston, TX 77553, USA.
| | - Shaley M Klumker
- Department of Marine Biology, Texas A&M University at Galveston, 200 Seawolf Parkway, Galveston, TX 77553, USA
| | - Alexis A Mitchell
- Department of Marine Biology, Texas A&M University at Galveston, 200 Seawolf Parkway, Galveston, TX 77553, USA
| | - Marshall A Coppage
- Department of Biological Sciences, University of South Carolina, 715 Sumter Street, Columbia, SC 29208, USA
| | - Jessica M Labonté
- Department of Marine Biology, Texas A&M University at Galveston, 200 Seawolf Parkway, Galveston, TX 77553, USA
| | - Antonietta Quigg
- Department of Marine Biology, Texas A&M University at Galveston, 200 Seawolf Parkway, Galveston, TX 77553, USA; Department of Oceanography, Texas A&M University, 3146 TAMU, College Station, TX 77843, USA; Department of Ecology and Conservation Biology, Texas A&M University, 534 John Kimbrough Boulevard, College Station, TX 77843, USA
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10
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Yan PF, Dong S, Manz KE, Woodcock MJ, Liu C, Mezzari MP, Abriola LM, Pennell KD, Cápiro NL. Aerobic biotransformation of 6:2 fluorotelomer sulfonate in soils from two aqueous film-forming foam (AFFF)-impacted sites. WATER RESEARCH 2024; 249:120941. [PMID: 38070347 DOI: 10.1016/j.watres.2023.120941] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 11/14/2023] [Accepted: 11/28/2023] [Indexed: 01/03/2024]
Abstract
Although 6:2 fluorotelomer sulfonate (6:2 FTS) is a common ingredient in aqueous film-forming foam (AFFF) formulations, its environmental fate at AFFF-impacted sites remains poorly understood. This study investigated the biotransformation of 6:2 FTS in microcosms prepared with soils collected from two AFFF-impacted sites; the former Loring Air Force Base (AFB) and Robins AFB. The half-life of 6:2 FTS in Loring soil was 43.3 days; while >60 mol% of initially spiked 6:2 FTS remained in Robins soil microcosms after a 224-day incubation. Differences in initial sulfate concentrations and the depletion of sulfate over the incubation likely contributed to the different 6:2 FTS biotransformation rates between the two soils. At day 224, stable transformation products, i.e., C4C7 perfluoroalkyl carboxylates, were formed with combined molar yields of 13.8 mol% and 1.2 mol% in Loring and Robins soils, respectively. Based on all detected transformation products, the biotransformation pathways of 6:2 FTS in the two soils were proposed. Microbial community analysis suggests that Desulfobacterota microorganisms may promote 6:2 FTS biotransformation via more efficient desulfonation. In addition, species from the genus Sphingomonas, which exhibited higher tolerance to elevated concentrations of 6:2 FTS and its biotransformation products, are likely to have contributed to 6:2 FTS biotransformation. This study demonstrates the potential role of biotransformation processes on the fate of 6:2 FTS at AFFF-impacted sites and highlights the need to characterize site biogeochemical properties for improved assessment of 6:2 FTS biotransformation behavior.
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Affiliation(s)
- Peng-Fei Yan
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY, USA.
| | - Sheng Dong
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY, USA
| | | | | | - Chen Liu
- School of Engineering, Brown University, Providence, RI, USA
| | - Melissa P Mezzari
- Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX, USA
| | - Linda M Abriola
- School of Engineering, Brown University, Providence, RI, USA
| | - Kurt D Pennell
- School of Engineering, Brown University, Providence, RI, USA
| | - Natalie L Cápiro
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY, USA.
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11
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Shittu AR, Iwaloye OF, Ojewole AE, Rabiu AG, Amechi MO, Herve OF. The effects of per- and polyfluoroalkyl substances on environmental and human microorganisms and their potential for bioremediation. Arh Hig Rada Toksikol 2023; 74:167-178. [PMID: 37791672 PMCID: PMC10549896 DOI: 10.2478/aiht-2023-74-3708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 01/01/2023] [Accepted: 08/01/2023] [Indexed: 10/05/2023] Open
Abstract
Utilised in a variety of consumer products, per- and polyfluoroalkyl substances (PFAS) are major environmental contaminants that accumulate in living organisms due to their highly hydrophobic, lipophobic, heat-resistant, and non-biodegradable properties. This review summarizes their effects on microbial populations in soils, aquatic and biogeochemical systems, and the human microbiome. Specific microbes are insensitive to and even thrive with PFAS contamination, such as Escherichia coli and the Proteobacteria in soil and aquatic environments, while some bacterial species, such as Actinobacteria and Chloroflexi, are sensitive and drop in population. Some bacterial species, in turn, have shown success in PFAS bioremediation, such as Acidimicrobium sp. and Pseudomonas parafulva.
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Affiliation(s)
- Adenike R. Shittu
- Bowling Green State University College of Arts and Sciences, Department of Biological Sciences, Bowling Green, OH, USA
| | - Opeoluwa F. Iwaloye
- Bowling Green State University College of Arts and Sciences, Department of Biological Sciences, Bowling Green, OH, USA
| | - Akinloye E. Ojewole
- Southern Illinois University, Department of Environmental Sciences, Edwardsville, IL, USA
| | - Akeem G. Rabiu
- University of Ibadan, Department of Microbiology, Ibadan, Nigeria
| | - Miracle O. Amechi
- University of Louisville, Department of Chemistry, Louisville, KY, USA
| | - Ouambo F. Herve
- Chantal Biya International Reference Centre, Laboratory of Vaccinology, Yaounde, Cameroon
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12
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Zhang F, Ge R, Wan Z, Li G, Cao L. Dual effects of PFOA or PFOS on reductive dechlorination of trichloroethylene (TCE). WATER RESEARCH 2023; 240:120093. [PMID: 37210970 DOI: 10.1016/j.watres.2023.120093] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 05/02/2023] [Accepted: 05/16/2023] [Indexed: 05/23/2023]
Abstract
PFASs and chlorinated solvents are the common co-contaminants in soil and groundwater at firefighter training areas (FTAs). Although PFASs mixtures could have adverse impacts on bioremediation of trichloroethylene (TCE) by inhibiting Dehalococcoides (Dhc), little is known about the effect and contribution of PFOA or PFOS on dechlorination of TCE by non-Dhc organohalide-respiring bacteria (OHRB). To study this, PFOA and PFOS were amended to the growth medium of a non-Dhc OHRB-containing enrichment culture to determine the impact on dechlorination. This study demonstrated that high levels of PFOA or PFOS (100 mg L-1) inhibited TCE dechlorination in four non-Dhc OHRB-containing community including Geobacter, Desulfuromonas, Desulfitobacterium, and Dehalobacter, but low levels of PFOA or PFOS (≤10 mg L-1) enhanced TCE dechlorination. Four non-Dhc OHRB were less inhibited by PFOA than that by PFOS, and high level of PFOS killed Desulfitobacterium and Dehalobacter and decreased the biodiversity of bacterial community. Although most fermenters were killed by the presence of 100 mg L-1 PFOS, two important co-cultures (Desulfovibrio and Sedimentibacter) of OHRB were enriched, indicating that the syntrophic relationships between OHRB and co-cultures still remained, and PFOA or PFOS inhibited TCE dechlorination by directly repressing non-Dhc OHRB. Our results highlight that the bioattenuation of chloroethene contamination could be confounded by non-Dhc OHRB in high levels of PFOS contaminated subsurface environments at FTAs.
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Affiliation(s)
- Fang Zhang
- School of Environment and State Key Joint Laboratory of Environment Simulation and Pollution Control, China State Environment Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing 100084, China; National Engineering Laboratory for Site Remediation Technologies, Beijing 100015, China
| | - Runlei Ge
- School of Environment and State Key Joint Laboratory of Environment Simulation and Pollution Control, China State Environment Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing 100084, China; National Engineering Laboratory for Site Remediation Technologies, Beijing 100015, China
| | - Ziren Wan
- School of Environment and State Key Joint Laboratory of Environment Simulation and Pollution Control, China State Environment Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing 100084, China; National Engineering Laboratory for Site Remediation Technologies, Beijing 100015, China
| | - Guanghe Li
- School of Environment and State Key Joint Laboratory of Environment Simulation and Pollution Control, China State Environment Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing 100084, China; National Engineering Laboratory for Site Remediation Technologies, Beijing 100015, China
| | - Lifeng Cao
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311215, China.
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13
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Dong S, Yan PF, Liu C, Manz KE, Mezzari MP, Abriola LM, Pennell KD, Cápiro NL. Assessing aerobic biotransformation of 8:2 fluorotelomer alcohol in aqueous film-forming foam (AFFF)-impacted soils: Pathways and microbial community dynamics. JOURNAL OF HAZARDOUS MATERIALS 2023; 446:130629. [PMID: 36630879 DOI: 10.1016/j.jhazmat.2022.130629] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 12/12/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Production of 8:2 fluorotelomer alcohol (8:2 FTOH) for industrial and consumer products, including aqueous film-forming foams (AFFFs) used for firefighting, has resulted in its widespread occurrence in the environment. However, the fate of 8:2 FTOH at AFFF-impacted sites remains largely unknown. Using AFFF-impacted soils from two United States Air Force Bases, microcosm experiments evaluated the aerobic biotransformation of 8:2 FTOH (extent and byproduct formation) and the dose-response on microbial communities due to 8:2 FTOH exposure. Despite different microbial communities, rapid transformation of 8:2 FTOH was observed during a 90-day incubation in the two soils, and 7:2 secondary fluorotelomer alcohol (7:2 sFTOH) and perfluorooctanoic acid (PFOA) were detected as major transformation products. Novel transformation products, including perfluoroalkane-like compounds (1H-perfluoroheptane, 1H-perfluorohexane, and perfluoroheptanal) were identified by liquid chromatography-high resolution mass spectrometry (LC-HRMS) and used to develop aerobic 8:2 FTOH biotransformation pathways. Microbial community analysis suggests that species from genus Sphingomonas are potential 8:2 FTOH degraders based on increased abundance in both soils after exposure, and the genus Afipia may be more tolerant to and/or involved in the transformation of 8:2 FTOH at elevated concentrations. These findings demonstrate the potential role of biological processes on PFAS fate at AFFF-impacted sites through fluorotelomer biotransformation.
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Affiliation(s)
- Sheng Dong
- Department of Civil and Environmental Engineering, Auburn University, Auburn, AL 36849, United States
| | - Peng-Fei Yan
- Department of Civil and Environmental Engineering, Auburn University, Auburn, AL 36849, United States
| | - Chen Liu
- School of Engineering, Brown University, Providence, RI 02912, United States
| | - Katherine E Manz
- School of Engineering, Brown University, Providence, RI 02912, United States
| | - Melissa P Mezzari
- Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX 77030, United States
| | - Linda M Abriola
- School of Engineering, Brown University, Providence, RI 02912, United States
| | - Kurt D Pennell
- School of Engineering, Brown University, Providence, RI 02912, United States
| | - Natalie L Cápiro
- Department of Civil and Environmental Engineering, Auburn University, Auburn, AL 36849, United States.
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14
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Lu B, Qian J, Hu J, Huang Y, Wang P, Shen J, He Y, Tang S, Liu Y, Zhang Y. Plant rhizosphere defense system respond differently to emerging polyfluoroalkyl substances F-53B and PFOS stress. JOURNAL OF HAZARDOUS MATERIALS 2023; 443:130119. [PMID: 36265386 DOI: 10.1016/j.jhazmat.2022.130119] [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: 05/07/2022] [Revised: 09/30/2022] [Accepted: 10/01/2022] [Indexed: 06/16/2023]
Abstract
Chlorinated polyfluoroalkyl ether sulfonate (F-53B) and perfluorooctanesulfonate (PFOS) are used and emitted as fog inhibitors in the chromium plating industry, and they are widely detected worldwide. To study the effects of F-53B and PFOS on the rhizosphere defense system, they were added at two levels (0.1 and 50 mg L-1) to the soil where different plants (Lythrum salicaria and Phragmites communis) were grown. In bulk soils, high concentrations of F-53B/PFOS resulted in significant increases in soil pH, NH4+-N, and NO3--N (the effect of PFOS on NO3--N was not significant). Moreover, the extent of the effects of PFOS and F-53B on the physicochemical properties of bulk soils were different (e.g., PFOS caused an increase of NH4+-N by 8.94%-45.97% compared to 1.63%-25.20% for F-53B). Root exudates and PFASs together influenced the physicochemical properties of rhizosphere soils (e.g., TOC increased significantly in contaminated rhizosphere soils but did not change in non-bulk soils). Under the influence of F-53B/PFOS, the root exudates regulated by plants were changed and weakened the effect of F-53B/PFOS on microbial community of rhizosphere soil. The rhizosphere defense systems of different plants have both similarities and differences in response to different substances and concentrations.
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Affiliation(s)
- Bianhe Lu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Jin Qian
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, Nanjing 210098, People's Republic of China.
| | - Jing Hu
- Geosystems Research Institute, Mississippi State University, MS 39759, USA
| | | | - Peifang Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, Nanjing 210098, People's Republic of China.
| | - Junwei Shen
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Yuxuan He
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Sijing Tang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Yin Liu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Yuhang Zhang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, Nanjing 210098, People's Republic of China
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15
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Cook EK, Olivares CI, Antell EH, Yi S, Nickerson A, Choi YJ, Higgins CP, Sedlak DL, Alvarez-Cohen L. Biological and Chemical Transformation of the Six-Carbon Polyfluoroalkyl Substance N-Dimethyl Ammonio Propyl Perfluorohexane Sulfonamide (AmPr-FHxSA). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:15478-15488. [PMID: 36257682 DOI: 10.1021/acs.est.2c00261] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Sites impacted by aqueous film-forming foam (AFFF) contain co-contaminants that can stimulate biotransformation of polyfluoroalkyl substances. Here, we compare how microbial enrichments from AFFF-impacted soil amended with diethyl glycol monobutyl ether (found in AFFF), aromatic hydrocarbons (present in co-released fuels), acetate, and methane (substrates used or formed during bioremediation) impact the aerobic biotransformation of an AFFF-derived six-carbon electrochemical fluorination (ECF) precursor N-dimethyl ammonio propyl perfluorohexane sulfonamide (AmPr-FHxSA). We found that methane- and acetate-oxidizing cultures resulted in the highest yields of identifiable products (38 and 30%, respectively), including perfluorohexane sulfonamide (FHxSA) and perfluorohexane sulfonic acid (PFHxS). Using these data, we propose and detail a transformation pathway. Additionally, we examined chemical oxidation products of AmPr-FHxSA and FHxSA to provide insights on remediation strategies for AmPr-FHxSA. We demonstrate mineralization of these compounds using the sulfate radical and test their transformation during the total oxidizable precursor (TOP) assay. While perfluorohexanoic acid accounted for over 95% of the products formed, we demonstrate here for the first time two ECF-based precursors, AmPr-FHxSA and FHxSA, that produce PFHxS during the TOP assay. These findings have implications for monitoring poly- and perfluoroalkyl substances during site remediation and application of the TOP assay at sites impacted by ECF-based precursors.
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Affiliation(s)
- Emily K Cook
- Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720, United States
| | - Christopher I Olivares
- Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720, United States
- Department of Civil and Environmental Engineering, University of California, Irvine, California 92697, United States
| | - Edmund H Antell
- Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720, United States
| | - Shan Yi
- Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720, United States
- Department of Chemical and Materials Engineering, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Anastasia Nickerson
- Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Youn Jeong Choi
- Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Christopher P Higgins
- Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, Colorado 80401, United States
| | - David L Sedlak
- Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720, United States
| | - Lisa Alvarez-Cohen
- Department of Civil and Environmental Engineering, University of California, Berkeley, California 94720, United States
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16
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Liu Y, Bahar MM, Samarasinghe SVAC, Qi F, Carles S, Richmond WR, Dong Z, Naidu R. Ecological risk assessment for perfluorohexanesulfonic acid (PFHxS) in soil using species sensitivity distribution (SSD) approach. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129667. [PMID: 36104899 DOI: 10.1016/j.jhazmat.2022.129667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 07/09/2022] [Accepted: 07/20/2022] [Indexed: 06/15/2023]
Abstract
Perfluorohexanesulfonic acid (PFHxS) is one of the persistent organic pollutants that has been recommended to be listed in Annex A of the Stockholm Convention. It has gained increasing attention in recent years due to its toxic effects. The guideline values of PFHxS are commonly associated with PFOS in various countries and regulatory agencies. In this study, multispecies bioassays were conducted to determine the ecological toxic effects of PFHxS, including plants, soil invertebrates, and soil microorganisms, which indicated the EC10/NOEC values ranged from 2.9 to 250 mg/kg. Where possible, logistic models were used to calculate the EC30 values for various endpoints. The species sensitivity distributions were employed to estimate the ecological investigation levels for PFHxS contamination in soils using toxicity results from literature and this study. The calculation using EC10/NOEC values from both literature and this study indicated a most conservative HC5 as 1.0 mg/kg (hazardous concentration for 5 % of the species being impacted). However, utilisation of EC30 values derived from this study resulted in a much higher HC5 for PFHxS in contaminated soils (13.0 mg/kg) which is at the higher end of the existing guideline values for PFOS for protecting ecological systems. The results obtained in this study can be useful in risk assessment processes to minimize any uncertainty using combined values with PFOS.
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Affiliation(s)
- Yanju Liu
- Global Centre for Environmental Remediation, College of Engineering, Science and Environment, University of Newcastle, Callaghan, NSW 2308, Australia; CRC for Contamination Assessment and Remediation of the Environment (CRC CARE), Callaghan, NSW 2308, Australia.
| | - Md Mezbaul Bahar
- Global Centre for Environmental Remediation, College of Engineering, Science and Environment, University of Newcastle, Callaghan, NSW 2308, Australia; CRC for Contamination Assessment and Remediation of the Environment (CRC CARE), Callaghan, NSW 2308, Australia.
| | - S V A Chamila Samarasinghe
- Global Centre for Environmental Remediation, College of Engineering, Science and Environment, University of Newcastle, Callaghan, NSW 2308, Australia; CRC for Contamination Assessment and Remediation of the Environment (CRC CARE), Callaghan, NSW 2308, Australia.
| | - Fangjie Qi
- Global Centre for Environmental Remediation, College of Engineering, Science and Environment, University of Newcastle, Callaghan, NSW 2308, Australia; CRC for Contamination Assessment and Remediation of the Environment (CRC CARE), Callaghan, NSW 2308, Australia.
| | | | - William R Richmond
- Department of Water and Environmental Regulation, Government of Western Australia, 8 Davidson Terrace, Joondalup WA 6027, Australia.
| | - Zhaomin Dong
- School of Space and Environment, Beihang University, Beijging 100191, China.
| | - Ravi Naidu
- Global Centre for Environmental Remediation, College of Engineering, Science and Environment, University of Newcastle, Callaghan, NSW 2308, Australia; CRC for Contamination Assessment and Remediation of the Environment (CRC CARE), Callaghan, NSW 2308, Australia.
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17
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Zhai X, Zhang L, Wu R, Wang M, Liu Y, Lian J, Munir MAM, Chen D, Liu L, Yang X. Molecular composition of soil organic matter (SOM) regulate qualities of tobacco leaves. Sci Rep 2022; 12:15317. [PMID: 36097148 PMCID: PMC9468172 DOI: 10.1038/s41598-022-19428-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 08/29/2022] [Indexed: 11/17/2022] Open
Abstract
Soil organic matter (SOM) is of vital importance to soil health, and also plays a crucial role in the quality of the crops such as tobacco. However, the link between tobacco quality and SOM chemical compositions is still not well understood. To fill the information gap, we analyzed the quality of tobacco leaves and the corresponding SOM molecular compositions by electrospray ionization (ESI) coupled with Fourier transform ion cyclotron resonance mass spectrometry (FTICR-MS), that were collected from six different sites in Bijie, Guizhou Province, China. The tobacco quality variedin six sites based on their chemical compositions. SOM compounds had a remarked impact on the quality of tobacco leaves and a distinct difference in SOM composition between low-quality and high-quality tobacco leaves was observed as well. Specifically, 105 common molecular formulas were detected in three SOM compounds of high-quality tobacco, which were more than those in low-quality samples. Although amino sugar, proteins, lipids, tannins, and carbohydrates had a collective influence on the chemical composition of tobacco leaves, the effect contributed by amino sugar and tannins was more prominent. In summary, fully understanding the association between tobacco chemical composition and SOM compounds can provide new insight into the regulation of tobacco quality and the sustainable development of agriculture.
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Affiliation(s)
- Xu Zhai
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Long Zhang
- Bijie Branch Company of Guizhou Tobacco Company, Guizhou, 551713, China
| | - Ruofan Wu
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Mei Wang
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Yanxiang Liu
- Bijie Branch Company of Guizhou Tobacco Company, Guizhou, 551713, China
| | - Jiapan Lian
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Mehr Ahmed Mujtaba Munir
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Dan Chen
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Lei Liu
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Xiaoe Yang
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
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18
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Mayakaduwage S, Ekanayake A, Kurwadkar S, Rajapaksha AU, Vithanage M. Phytoremediation prospects of per- and polyfluoroalkyl substances: A review. ENVIRONMENTAL RESEARCH 2022; 212:113311. [PMID: 35460639 DOI: 10.1016/j.envres.2022.113311] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 04/02/2022] [Accepted: 04/11/2022] [Indexed: 06/14/2023]
Abstract
Extensive use of per- and polyfluoroalkyl substances (PFASs) in various industrial activities and daily-life products has made them ubiquitous contaminants in soil and water. PFAS-contaminated soil acts as a long-term source of pollution to the adjacent surface water bodies, groundwater, soil microorganisms, and soil invertebrates. While several remediation strategies exist to eliminate PFASs from the soil, strong ionic interactions between charged groups on PFAS with soil constituents rendered these PFAS remediation technologies ineffective. Pilot and field-scale data from recent studies have shown a great potential of PFAS to bio-accumulate and distribute within plant compartments suggesting that phytoremediation could be a potential remediation technology to clean up PFAS contaminated soils. Even though several studies have been performed on the uptake and translocation of PFAS by different plant species, most of these studies are limited to agricultural crops and fruit species. In this review, the role of both aquatic and terrestrial plants in the phytoremediation of PFAS was discussed highlighting different mechanisms underlying the uptake of PFASs in the soil-plant and water-plant systems. This review further summarized a wide range of factors that influence the bioaccumulation and translocation of PFASs within plant compartments including both structural properties of PFASs and physiological properties of plant species. Even though phytoremediation appears to be a promising remediation technique, some limitations that reduced the feasibility of phytoremediation in the practical application have been emphasized in previous studies. Additional research directions are suggested, including advanced genetic engineering techniques and endophyte-assisted phytoremediation to upgrade the phytoremediation potential of plants for the successful removal of PFASs.
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Affiliation(s)
- Sonia Mayakaduwage
- School of Biological Sciences, University of Adelaide, Adelaide, Australia.
| | - Anusha Ekanayake
- Ecosphere Resilience Research Center, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, 10250, Sri Lanka.
| | - Sudarshan Kurwadkar
- Department of Civil and Environmental Engineering, California State University, 800 N. State College Blvd., Fullerton, CA, 92831, USA
| | - Anushka Upamali Rajapaksha
- Ecosphere Resilience Research Center, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, 10250, Sri Lanka; Instrument Center, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, 10250, Sri Lanka
| | - Meththika Vithanage
- Ecosphere Resilience Research Center, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, 10250, Sri Lanka.
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19
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Huang D, Xu R, Sun X, Li Y, Xiao E, Xu Z, Wang Q, Gao P, Yang Z, Lin H, Sun W. Effects of perfluorooctanoic acid (PFOA) on activated sludge microbial community under aerobic and anaerobic conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:63379-63392. [PMID: 35459989 DOI: 10.1007/s11356-022-18841-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Accepted: 01/20/2022] [Indexed: 06/14/2023]
Abstract
Per- and polyfluoroalkyl substances (PFASs) have received increasing attention due to their widespread presence in diverse environments including wastewater treatment plants (WWTPs) and their potential adverse health effects. Perfluorooctanoic acid (PFOA) is one of the most detected forms of PFASs in WWTPs. However, there is still a paucity of knowledge about the effect of PFASs on microorganisms of the key component of WWTP, activated sludge. In this study, lab-scale microcosm experiments were established to evaluate the influences of PFOA on activated sludge microbes under aerobic and anaerobic conditions. The diversity, structure, and microbe-microbe interaction of microbial community were determined by 16S rRNA gene amplicon sequencing and co-occurrence network analysis. After 90 days of exposure to PFOA, activated sludge microbial richness decreased under both aerobic and anaerobic conditions. Specifically, under aerobic condition, Rhodopseudomonas (mean relative abundance 3.6%), Flavobacterium (2.4%), and Ignavibacterium (6.6%) were enriched in PFOA-spiked activated sludge compared with that in the unspiked sludge (2.6%, 0.1%, and 1.9%, respectively). By contrast, after 90 days of exposure to PFOA, Eubacterium (2.1%), Hyphomicrobium (1.8%), and Methyloversatilis (1.2%) were enriched under anaerobic condition, and more abundant than that in the control sludge (0.4%, 1.5%, and 0.6%, respectively). These genera were the potential PFOA-resistant members. In addition, Azospirillum and Sporomusa were the most connected taxa in PFOA-aerobic and PFOA-anaerobic networks, respectively. Prediction of the functional gene showed that PFOA inhibited some gene expression of sludge microbes, such as transcription, amino acid transport and metabolism, and energy production and conversion. In summary, continued exposure to PFOA induced substantial shifts of the sludge bacterial diversity and composition under both aerobic and anaerobic conditions.
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Affiliation(s)
- Duanyi Huang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, People's Republic of China
| | - Rui Xu
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, 808 Tianyuan Road, Guangzhou, 510650, China
| | - Xiaoxu Sun
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, 808 Tianyuan Road, Guangzhou, 510650, China
| | - Yongbin Li
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, 808 Tianyuan Road, Guangzhou, 510650, China
| | - Enzong Xiao
- Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Zhimin Xu
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China
| | - Qi Wang
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, 808 Tianyuan Road, Guangzhou, 510650, China
| | - Pin Gao
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, 808 Tianyuan Road, Guangzhou, 510650, China
| | - Zhaohui Yang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China.
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, People's Republic of China.
| | - Hanzhi Lin
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, 808 Tianyuan Road, Guangzhou, 510650, China.
| | - Weimin Sun
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, 808 Tianyuan Road, Guangzhou, 510650, China.
- School of Environment, Henan Normal University, Xinxiang, China.
- Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Xinxiang, China.
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20
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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: 35] [Impact Index Per Article: 11.7] [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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21
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Xu R, Tao W, Lin H, Huang D, Su P, Gao P, Sun X, Yang Z, Sun W. Effects of Perfluorooctanoic Acid (PFOA) and Perfluorooctane Sulfonic Acid (PFOS) on Soil Microbial Community. MICROBIAL ECOLOGY 2022; 83:929-941. [PMID: 34283261 DOI: 10.1007/s00248-021-01808-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 06/22/2021] [Indexed: 06/13/2023]
Abstract
The extensive application of perfluoroalkyl and polyfluoroalkyl substances (PFASs) causes their frequent detection in various environments. In this work, two typical PFASs, perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS), are selected to investigate their effects on soil microorganisms. Microbial community structure and microbe-microbe relationships were investigated by high-throughput sequencing and co-occurrence network analysis. Under 90 days of exposure, the alpha-diversity of soil microbial communities was increased with the PFOS treatment, followed by the PFOA treatment. The exposure of PFASs substantially changed the compositions of soil microbial communities, leading to the enrichment of more PFASs-tolerant bacteria, such as Proteobacteria, Burkholderiales, and Rhodocyclales. Comparative co-occurrence networks were constructed to investigate the microbe-microbe interactions under different PFASs treatments. The majority of nodes in the PFOA and PFOS networks were associated with the genus Azospirillum and Hydrogenophaga, respectively. The LEfSe analysis further identified a set of biomarkers in the soil microbial communities, such as Azospirillum, Methyloversatilis, Hydrogenophaga, Pseudoxanthomonas, and Fusibacter. The relative abundances of these biomarkers were also changed by different PFASs treatments. Functional gene prediction suggested that the microbial metabolism processes, such as nucleotide transport and metabolism, cell motility, carbohydrate transport and metabolism, energy production and conversion, and secondary metabolites biosynthesis transport and catabolism, might be inhibited under PFAS exposure, which may further affect soil ecological services.
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Affiliation(s)
- Rui Xu
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, China
- Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Wan Tao
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, China
- Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Hanzhi Lin
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, China
- Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Duanyi Huang
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, China
- Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
| | - Pingzhou Su
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, China
- Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Pin Gao
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, China
- Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Xiaoxu Sun
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, China
- Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Zhaohui Yang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
| | - Weimin Sun
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, China.
- Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China.
- School of Environment, Henan Normal University, Xinxiang, China.
- Key Laboratory of Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, 808 Tianyuan Road, Guangzhou, Guangdong, China.
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22
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Lv M, Xie Y, Yu H, Sun T, Song L, Wang F. Effects of perfluoroalkyl substances on soil respiration and enzymatic activity: differences in carbon chain-length dependence. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2022; 57:284-296. [PMID: 35262431 DOI: 10.1080/03601234.2022.2047563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Perfluoroalkyl substances (PFASs) are anthropogenic compounds that exhibit ecotoxicity when discharged into the environment, causing increasing concern. An indoor experiment was conducted to investigate the effects of perfluoroalkyl carboxylic acids (PFCAs) and PFSAs on soil respiration, sucrase activity, and urease activity at 0, 7, 14, and 28 d for perfluorooctanoic acid (PFOA), perfluorohexanoic acid (PFHxA), and perfluorobutyric acid (PFBA), and at 14 and 28 d for perfluorooctane sulfonic acid (PFOS), perfluorohexanoic sulfonic acid (PFHxS), and perfluorobutyric sulfonic acid (PFBS). PFCAs significantly inhibited soil respiration, with a significant negative correlation between respiration and PFBA (P < 0.05) at 28 d. Sucrase activities were initially inhibited by PFCAs, and then recovered. Urease activities were inhibited by PFOA at 14 d and by PFHxA at 14 and 28 d, but not by PFBA. PFOS and PFBS briefly enhanced soil respiration. PFOS inhibited sucrase activity. PFSAs significantly decreased urease activity in a concentration- and time-dependent manner. The chain-length dependence of the ecotoxicity of PFASs varied depending on concentration and time. Toxicity demonstrated a trend of initial decrease followed by increase with carbon chain length. Our results first revealed that the chain-length dependences of PFASs were also related to concentrations and exposure time.
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Affiliation(s)
- Ming Lv
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Taian, Shandong, China
| | - Yangyang Xie
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Taian, Shandong, China
| | - Hui Yu
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Taian, Shandong, China
| | - Tao Sun
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Taian, Shandong, China
| | - Liping Song
- Taishan District Total Pollutant Emission Control Center, Taishan Branch of Tai'an Ecological Environment Bureau, Taian, Shandong, China
| | - Fenghua Wang
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Taian, Shandong, China
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23
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Cao L, Xu W, Wan Z, Li G, Zhang F. Occurrence of PFASs and its effect on soil bacteria at a fire-training area using PFOS-restricted aqueous film-forming foams. iScience 2022; 25:104084. [PMID: 35372804 PMCID: PMC8971937 DOI: 10.1016/j.isci.2022.104084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 02/04/2022] [Accepted: 03/11/2022] [Indexed: 11/29/2022] Open
Abstract
Fire-training areas (FTAs) are an important source of perfluoroalkyl and polyfluoroalkyl substances (PFASs) pollution. However, the effect of PFASs on soil bacterial communities remains limited. Here, we detected the PFASs in soils ranging from 3.4 to 531.7 μg kg−1 dry weight in seven plots at an FTA where PFOS-restricted aqueous film-forming foams (AFFFs) have been used for 6 years. PFOS was still the dominant homologue despite the restriction by Stockholm Convention, but it was almost three orders of magnitude lower than that in previous studies. PFASs played an important role in shaping the bacterial community, and high levels of PFASs (>100 μg kg−1 dw) reduced the biodiversity and connectivity of soil bacteria. The extreme condition-tolerant bacteria were identified as biomarkers at the FTA. Our study provides valuable insights into the effect of PFOS-restricted AFFFs on soil bacterial communities at the FTA. PFOS was still the dominant PFAS despite the restriction by Stockholm Convention PFASs played an important role in shaping bacterial community High level of PFASs reduced the biodiversity and connectivity of soil bacteria The extreme condition-tolerant bacteria were identified as biomarkers at the FTA
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24
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Senevirathna STMLD, Krishna KCB, Mahinroosta R, Sathasivan A. Comparative characterization of microbial communities that inhabit PFAS-rich contaminated sites: A case-control study. JOURNAL OF HAZARDOUS MATERIALS 2022; 423:126941. [PMID: 34474371 DOI: 10.1016/j.jhazmat.2021.126941] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 08/01/2021] [Accepted: 08/16/2021] [Indexed: 06/13/2023]
Abstract
The historic usage and discharge of per- and polyfluoroalkyl substances (PFAS) containing chemicals have produced many contaminated sites and PFAS contamination has become a global concern due to their persistence, widespread distribution, and potential adverse impacts for human and environmental health. However, there have been limited investigations on the specific behavior of bacterial communities in PFAS contaminated soils. In this study, a quantitative PCR assay and Illumina MiSeq sequencing were used to investigate the variations of bacterial communities in a regional Australian airport contaminated with PFAS. The dominate PFAS detected in soil samples was Perfluorooctanesulfonic acid (PFOS), which accounted for 82% of total PFAS and the maximum PFOS level was noted (20,947±1824 ng.PFOS/mg.Soil) at the top soil. Irrespective of the degree of PFAS contamination at different depths, the comparable percentile contribution of each PFAS was observed in soil samples. Significantly higher bacteria amplicon sequence variant (ASV) and diversity were noted in uncontaminated soil than PFAS contaminated soil. Bacterial genera Rhodanobacter and Chujaibacter were dominant in the PFAS contaminated soil. Three different bacterial genera of Alphaproteobacteria, Ambiguous taxa of Acidobacteriia, and genus Chujaibacter of Gammaproteobacteria showed a significant positive correlation and RB41, Gaiella showed a significant negative correlation with 11 different PFAS concentrations. Overall, the results presented in this study suggest that the counts and species diversity of soil microorganisms are adversely influenced by PFAS contamination.
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Affiliation(s)
- S T M L D Senevirathna
- CSU Engineering, Faculty of Business, Justice and Behavioural Sciences, Charles Sturt University, Panorama Avenue, Bathurst, NSW, Australia; Institute of Land, Water and Society, Charles Sturt University, Australia.
| | - K C Bal Krishna
- School of Engineering, Western Sydney University, Locked Bag 1797, Penrith NSW 2750, Australia
| | - Reza Mahinroosta
- CSU Engineering, Faculty of Business, Justice and Behavioural Sciences, Charles Sturt University, Panorama Avenue, Bathurst, NSW, Australia; Institute of Land, Water and Society, Charles Sturt University, Australia
| | - Arumugam Sathasivan
- School of Engineering, Western Sydney University, Locked Bag 1797, Penrith NSW 2750, Australia
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25
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Cai Y, Wang Q, Zhou B, Yuan R, Wang F, Chen Z, Chen H. A review of responses of terrestrial organisms to perfluorinated compounds. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 793:148565. [PMID: 34174603 DOI: 10.1016/j.scitotenv.2021.148565] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/15/2021] [Accepted: 06/16/2021] [Indexed: 06/13/2023]
Abstract
Perfluorinated compounds (PFCs) are a class of persistent organic pollutants with widespread distribution in the environment. Since the soil environment has become a significant sink for PFCs, the toxicological assessment about their potential effects on terrestrial organisms is necessary. This review compiles the toxicity researches of regular and emerging PFCs on classical terrestrial biota i.e. microorganisms, earthworms, and plants. In the soil environment, the bioavailability of PFCs much depends on their adsorption in soil, which is affected by soil properties and PFCs structure. By the exploration of bacterial community richness and structure, the gene expression, the influences of PFCs on soil microorganisms were revealed; while the plants and earthworms manifested the PFCs disruption not only through macroscopic indicators, but also from molecular and metabolite responses. Basically, the addition of PFCs would accelerate the production of reactive oxygen species (ROS) in terrestrial organisms, while the excessive ROS could not be eliminated by the defense system causing oxidative damage. Nowadays, the PFCs toxic mechanisms discussed are limited to a single strain, Escherichia coli; thus, the complexity of the soil environment demands further in-depth researches. This review warrants studies focus on more potential quantitative toxicity indicators, more explicit elaboration on toxicity influencing factors, and environmentally relevant concentrations to obtain a more integrated picture of PFCs toxicity on terrestrial biota.
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Affiliation(s)
- Yanping Cai
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Qianyu Wang
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Beihai Zhou
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Rongfang Yuan
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Fei Wang
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Zhongbing Chen
- Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, 16500 Prague, Czech Republic
| | - Huilun Chen
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China.
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26
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Sharifan H, Bagheri M, Wang D, Burken JG, Higgins CP, Liang Y, Liu J, Schaefer CE, Blotevogel J. Fate and transport of per- and polyfluoroalkyl substances (PFASs) in the vadose zone. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 771:145427. [PMID: 33736164 DOI: 10.1016/j.scitotenv.2021.145427] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 01/19/2021] [Accepted: 01/21/2021] [Indexed: 05/06/2023]
Abstract
Per- and polyfluoroalkyl substances (PFASs) are a heterogeneous group of persistent organic pollutants that have been detected in various environmental compartments around the globe. Emerging research has revealed the preferential accumulation of PFASs in shallow soil horizons, particularly at sites impacted by firefighting activities, agricultural applications, and atmospheric deposition. Once in the vadose zone, PFASs can sorb to soil, accumulate at interfaces, become volatilized, be taken up in biota, or leach to the underlying aquifer. At the same time, polyfluorinated precursor species may transform into highly recalcitrant perfluoroalkyl acids, changing their chemical identity and thus transport behavior along the way. In this review, we critically discuss the current state of the knowledge and aim to interconnect the complex processes that control the fate and transport of PFASs in the vadose zone. Furthermore, we identify key challenges and future research needs. Consequently, this review may serve as an interdisciplinary guide for the risk assessment and management of PFAS-contaminated sites.
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Affiliation(s)
- Hamidreza Sharifan
- Department of Civil and Environmental Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Majid Bagheri
- Civil, Architectural and Environmental Engineering Department, Missouri University of Science and Technology, Rolla, MO, USA
| | - Dan Wang
- Department of Civil Engineering, McGill University, Montreal, Quebec H3A 0C3, Canada
| | - Joel G Burken
- Civil, Architectural and Environmental Engineering Department, Missouri University of Science and Technology, Rolla, MO, USA
| | - Christopher P Higgins
- Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO 80401, USA
| | - Yanna Liang
- Department of Environmental and Sustainable Engineering, University at Albany, SUNY, Albany, NY 12222, USA
| | - Jinxia Liu
- Department of Civil Engineering, McGill University, Montreal, Quebec H3A 0C3, Canada
| | | | - Jens Blotevogel
- Department of Civil and Environmental Engineering, Colorado State University, Fort Collins, CO 80523, USA.
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27
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Hu C, Huang Z, Liu M, Sun B, Tang L, Chen L. Shift in skin microbiota and immune functions of zebrafish after combined exposure to perfluorobutanesulfonate and probiotic Lactobacillus rhamnosus. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 218:112310. [PMID: 33971395 DOI: 10.1016/j.ecoenv.2021.112310] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/27/2021] [Accepted: 05/02/2021] [Indexed: 06/12/2023]
Abstract
Dysbiosis of fish skin microbiome and immunity by environmental pollutants are rarely studied in toxicological research in spite of their importance for fish health. In the present study, adult zebrafish were exposed to 0 and 10 μg/L of perfluorobutanesulfonate (PFBS) for 40 days, with or without the supplementation of probiotic Lactobacillus rhamnosus, with objectives to explore the interaction between PFBS pollutant and probiotic bacteria on skin mucosal microbiota and immune response. Amplicon sequencing analysis found that PFBS alone significantly disturbed the microbial community composition and abundance on the skin, favoring the growth of stress-tolerant bacteria (e.g., Deinococcus and Enhydrobacter genera). However, the administration of probiotic inhibited the dysbiosis of PFBS and shaped the skin microbiome in the combined exposure group. PFBS single exposure also promoted the production of mucus on the skin of male zebrafish, which may be related to the growth of Limnobacter bacteria. In contrast, probiotic supplements remarkably improved the immune functions in male skin mucus from the combined group, as evidenced by the consistent increases in lysozyme activity, immunoglobulin concentrations and peroxidase activity. Overall, the present study provides the first clue about the singular and combined effects of PFBS and probiotic on skin microbiota and immunity, highlighting the beneficial action of probiotic L. rhamnosus against PFBS stress.
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Affiliation(s)
- Chenyan Hu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430072, China
| | - Zileng Huang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430072, China
| | - Mengyuan Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Baili Sun
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lizhu Tang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lianguo Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
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Zhang X, Chen Z, Huo X, Kang J, Zhao S, Peng Y, Deng F, Shen J, Chu W. Application of Fourier transform ion cyclotron resonance mass spectrometry in deciphering molecular composition of soil organic matter: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 756:144140. [PMID: 33293083 DOI: 10.1016/j.scitotenv.2020.144140] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 11/03/2020] [Accepted: 11/23/2020] [Indexed: 06/12/2023]
Abstract
Swiftly deciphering soil organic matter (SOM) composition is critical for research on soil degradation and restoration. Recent advances in analytical techniques (e.g., optical methods and mass spectrometry) have expanded our understanding of the composition, origin, and evolution of SOM. In particular, the use of Fourier transform ion cyclotron resonance mass spectrometers (FTICR-MS) makes it possible to interpret SOM compositions at the molecular level. In this review, we discuss extraction, enrichment, and purification methods for SOM using FTICR-MS analysis; summarize ionization techniques, FTICR-MS mechanisms, data analysis methods, and molecular compositions of SOM in different environments (providing new insights into its origin and evolution); and discuss factors affecting its molecular diversity. Our results show that digenesis, combustion, pyrolysis, and biological metabolisms jointly contribute to the molecular diversity of SOM molecules. The SOM thus formed can further undergo photodegradation during transportation from land to fresh water (and subsequently oceans), resulting in the formation of dissolved organic matter (DOM). Better understanding the molecular features of DOM therefore accelerates our understanding of SOM evolution. In addition, we assess the degradation potential of SOM in different environments to better inform soil remediation methods. Finally, we discuss the merits and drawbacks of applying FTICR-MS on the analysis of SOM molecules, along with existing gaps in knowledge, challenges, and new opportunities for research in FTICR-MS applications and SOM identification.
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Affiliation(s)
- Xiaoxiao Zhang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Zhonglin Chen
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Xiaoyu Huo
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jing Kang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Shenxin Zhao
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Yutao Peng
- Beijing Key Laboratory of Farmyard Soil Pollution Prevention-control and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Fengxia Deng
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jimin Shen
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Wei Chu
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
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Bottos EM, Al-Shabib EY, Shaw DMJ, McAmmond BM, Sharma A, Suchan DM, Cameron ADS, Van Hamme JD. Transcriptomic response of Gordonia sp. strain NB4-1Y when provided with 6:2 fluorotelomer sulfonamidoalkyl betaine or 6:2 fluorotelomer sulfonate as sole sulfur source. Biodegradation 2020; 31:407-422. [PMID: 33150552 PMCID: PMC7661421 DOI: 10.1007/s10532-020-09917-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 10/27/2020] [Indexed: 02/06/2023]
Abstract
Abstract Perfluoroalkyl and polyfluoroalkyl substances (PFAS) are environmental contaminants of concern. We previously described biodegradation of two PFAS that represent components and transformation products of aqueous film-forming foams (AFFF), 6:2 fluorotelomer sulfonamidoalkyl betaine (6:2 FTAB) and 6:2 fluorotelomer sulfonate (6:2 FTSA), by Gordonia sp. strain NB4-1Y. To identify genes involved in the breakdown of these compounds, the transcriptomic response of NB4-1Y was examined when grown on 6:2 FTAB, 6:2 FTSA, a non-fluorinated analog of 6:2 FTSA (1-octanesulfonate), or MgSO4, as sole sulfur source. Differentially expressed genes were identified as those with ± 1.5 log2-fold-differences (± 1.5 log2FD) in transcript abundances in pairwise comparisons. Transcriptomes of cells grown on 6:2 FTAB and 6:2 FTSA were most similar (7.9% of genes expressed ± 1.5 log2FD); however, several genes that were expressed in greater abundance in 6:2 FTAB treated cells compared to 6:2 FTSA treated cells were noted for their potential role in carbon–nitrogen bond cleavage in 6:2 FTAB. Responses to sulfur limitation were observed in 6:2 FTAB, 6:2 FTSA, and 1-octanesulfonate treatments, as 20 genes relating to global sulfate stress response were more highly expressed under these conditions compared to the MgSO4 treatment. More highly expressed oxygenase genes in 6:2 FTAB, 6:2 FTSA, and 1-octanesulfonate treatments were found to code for proteins with lower percent sulfur-containing amino acids compared to both the total proteome and to oxygenases showing decreased expression. This work identifies genetic targets for further characterization and will inform studies aimed at evaluating the biodegradation potential of environmental samples through applied genomics. Graphic Abstract ![]()
Electronic supplementary material The online version of this article (10.1007/s10532-020-09917-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Eric M Bottos
- Department of Biological Sciences, Thompson Rivers University, Kamloops, BC, V2C 0C8, Canada
| | - Ebtihal Y Al-Shabib
- Department of Biology, University of Regina, Regina, SK, S4S 0A2, Canada
- Faculty of Science, Institute for Microbial Systems and Society, University of Regina, Regina, SK, S4S 0A2, Canada
| | - Dayton M J Shaw
- Department of Biological Sciences, Thompson Rivers University, Kamloops, BC, V2C 0C8, Canada
| | - Breanne M McAmmond
- Department of Biological Sciences, Thompson Rivers University, Kamloops, BC, V2C 0C8, Canada
| | - Aditi Sharma
- Department of Biology, University of Regina, Regina, SK, S4S 0A2, Canada
- Faculty of Science, Institute for Microbial Systems and Society, University of Regina, Regina, SK, S4S 0A2, Canada
| | - Danae M Suchan
- Department of Biology, University of Regina, Regina, SK, S4S 0A2, Canada
- Faculty of Science, Institute for Microbial Systems and Society, University of Regina, Regina, SK, S4S 0A2, Canada
| | - Andrew D S Cameron
- Department of Biology, University of Regina, Regina, SK, S4S 0A2, Canada
- Faculty of Science, Institute for Microbial Systems and Society, University of Regina, Regina, SK, S4S 0A2, Canada
| | - Jonathan D Van Hamme
- Department of Biological Sciences, Thompson Rivers University, Kamloops, BC, V2C 0C8, Canada.
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Lu B, Qian J, Wang P, Wang C, Hu J, Li K, He X, Jin W. Effect of perfluorooctanesulfonate (PFOS) on the rhizosphere soil nitrogen cycling of two riparian plants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 741:140494. [PMID: 32886976 DOI: 10.1016/j.scitotenv.2020.140494] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 06/21/2020] [Accepted: 06/22/2020] [Indexed: 06/11/2023]
Abstract
Here, we examined the effects of low and high concentrations of perfluorooctanesulfonate (PFOS) on rhizosphere soil N cycling processes in the presence of Lythrum salicaria and Phragmites communis over 4 months. Compared with the control group, the nitrate nitrogen (NO3--N) content of the bulk soil in the low PFOS (0.1 mg kg-1) treatment significantly decreased (27.7%), the ammonium nitrogen (NH4+-N) content significantly increased (8.7%), and the pH value and total organic carbon (TOC) content slightly increased (0.3% and 1.1%, respectively). Compared with the low PFOS treatment, the content of NO3-N, NH4+-N and pH value in the bulk soil of the high PFOS treatment (50 mg kg-1) significantly increased (1.0%, 53.8% and 61.8%, respectively), and the TOC content significantly decreased (8.2%). Soil protease levels were high in the low PFOS treatment, but low in the high PFOS treatment. PFOS produced inverted U-shaped responses in the potential nitrification (1.5, 3.0, and 1.1 mg N d-1 kg-1 in no, low, and high PFOS, respectively), denitrification (0.19, 0.30, and 0.22 mg N d-1 kg-1 in no, low, and high PFOS, respectively), and N2O emission rates (0.01, 0.03, and 0.02 mg N d-1 kg-1 in no, low, and high PFOS, respectively) of bulk soil. The abundance of the archaea amoA gene decreased with increasing PFOS concentration, whereas that of bacterial amoA increased; inverted U-shaped responses were observed for narG, nirK, nirS, and nosZ. In the PFOS-contaminated rhizosphere soil, the observed changes differed from those in the bulk soil and differed between treatments. P. communis tended to upregulate each step of the nitrogen cycle under low PFOS conditions, whereas L. salicaria tended to inhibit them. Under high PFOS conditions, both test plants tended to act as inhibitors of the soil N-cycle; thus, the effects of PFOS on soil N transformation were plant-specific.
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Affiliation(s)
- Bianhe Lu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Jin Qian
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, Nanjing 210098, People's Republic of China.
| | - Peifang Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Chao Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Jing Hu
- Wetland Biogeochemistry Laboratory, Soil and Water Sciences Department, Institute of Food and Agricultural Sciences (IFAS), University of Florida, Gainesville, FL, USA
| | - Kun Li
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Xixian He
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, Nanjing 210098, People's Republic of China
| | - Wen Jin
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, People's Republic of China; College of Environment, Hohai University, Nanjing 210098, People's Republic of China
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Ke Y, Tong T, Chen J, Huang J, Xie S. Influences of hexafluoropropylene oxide (HFPO) homologues on soil microbial communities. CHEMOSPHERE 2020; 259:127504. [PMID: 32650170 DOI: 10.1016/j.chemosphere.2020.127504] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 05/05/2020] [Accepted: 06/20/2020] [Indexed: 06/11/2023]
Abstract
Hexafluoropropylene oxide (HFPO) homologues, as emerging perfluoroalkyl substances (PFASs) to replace legacy PFASs, have wide applications in the organofluorine industry and have been detected in the global environment. However, it is still unclear what effect HFPO homologues will exert on microbial abundance, community structure and function. The objective of this study was to assess potential impacts of HFPO homologue acids on archaea, bacteria, and ammonia-oxidizing archaea (AOA) and bacteria (AOB) in the soil environment. Grassland soil microcosms were supplemented with low (0.1 mg/kg) or high (10 mg/kg) dosages of dimer, trimer and tetramer acids of HFPO (HFPO-DA, HFPO-TA, and HFPO-TeA), respectively. The amendment of HFPO homologues acids initially decreased the abundance of archaea and bacteria but increased them in the later period. The addition of HFPO homologues acids raised AOA abundance but restrained AOB growth during the whole incubation. AOA and AOB community structures showed considerable variations. Potential nitrifying rate (PNR) showed an increase in the initial period followed by a decline in the later period. HFPO-DA had a lasting and suppressive effect on AOB and PNR even at a nearly environmental level. Overall, HFPO homologues with different carbon chain lengths had different impacts on soil microbial community and ammonia oxidation.
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Affiliation(s)
- Yanchu Ke
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Tianli Tong
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Jianfei Chen
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Jun Huang
- School of Environment, Beijing Key Laboratory for Emerging Organic Contaminants Control (BKLEOC), State Key Joint Laboratory of Environment Simulation and Pollution Control (SKLESPC), Tsinghua University, Beijing, 100084, China.
| | - Shuguang Xie
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China.
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32
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Cai Y, Chen H, Yuan R, Wang F, Chen Z, Zhou B. Metagenomic analysis of soil microbial community under PFOA and PFOS stress. ENVIRONMENTAL RESEARCH 2020; 188:109838. [PMID: 32798955 DOI: 10.1016/j.envres.2020.109838] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 05/29/2020] [Accepted: 06/15/2020] [Indexed: 06/11/2023]
Abstract
Perfluorinated compounds (PFCs) contamination of soil has attracted global attention in recent years but influences of PFCs on microorganisms in the soil environment have not been fully described. In this study, the effects of perfluorooctane sulphonate (PFOS) and perfluoroctanoic acid (PFOA) on bacterial communities were determined by Illumina Miseq sequencing and Illumina Hiseq Xten. The stimulation of PFCs pollutants on soil bacterial richness and community diversity were observed. Sequencing information indicated that Proteobacteria, Acidobacteria, Actinobacteria, Chloroflexi, Firmicutes, and Gemmatimonadetes were the dominant bacterial phyla. Two genera, Bacillus and Sphingomonas, exhibited adverse responses toward PFCs pollution. Carbohydrate-active enzymes (CAZy), Kyoto Encyclopedia of Genes and Genomes (KEGG) and NCBI databases were used to elucidate the proteins and function action of soil microbial to PFCs pollution. Pathways such as Carbohydrate metabolism, Global and overview maps and Membrane transport in the soil microbes were affected by PFCs stress. CAZy analysis revealed that glycosyl transferases (GTs) in PFCs-polluted soils showed more active, while glycoside hydrolases (GHs) were inhibited severely.
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Affiliation(s)
- Yanping Cai
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Huilun Chen
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
| | - Rongfang Yuan
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Fei Wang
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Zhongbing Chen
- Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, 16500, Prague, Czech Republic
| | - Beihai Zhou
- Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
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O'Carroll DM, Jeffries TC, Lee MJ, Le ST, Yeung A, Wallace S, Battye N, Patch DJ, Manefield MJ, Weber KP. Developing a roadmap to determine per- and polyfluoroalkyl substances-microbial population interactions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 712:135994. [PMID: 31931194 DOI: 10.1016/j.scitotenv.2019.135994] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 11/28/2019] [Accepted: 12/06/2019] [Indexed: 06/10/2023]
Abstract
We collected over 40 groundwater samples from a per- and polyfluoroalkyl substances (PFAS) impacted legacy fire fighting training area in Canada to develop an in-depth assessment of the relationship between PFAS and in situ microbial communities. Results suggest differential transport of PFAS of differing chain-length and head group. There is also evidence of PFAS degradation, in particular 6:2 FTS degradation. Although PFAS constituents were not major drivers of microbial community structure, the relative abundance of over one hundred individual genera were significantly associated with PFAS chemistry. For example, lineages within the Oxalobacteraceae family had strong negative correlations with PFAS, whilst the Desulfococcus genus has strong positive correlations. Results also suggest a range of genera may have been stimulated at low to mid-range concentrations (e.g., Gordonia and Acidimicrobium), with some genera potentially inhibited at high PFAS concentrations. Any correlations identified need to be further investigated to determine the underlying reasons for observed associations as this is an open field site with the potential for many confounding factors. Positive correlations may ultimately provide important insights related to development of biodegradation technologies for PFAS impacted sites, while negative correlations further improve our understanding of the potential negative effects of PFAS on ecosystem health.
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Affiliation(s)
- Denis M O'Carroll
- School of Civil and Environmental Engineering, Water Research Centre, University of New South Wales, Sydney, NSW 2052, Australia.
| | | | - Matthew J Lee
- School of Civil and Environmental Engineering, Water Research Centre, University of New South Wales, Sydney, NSW 2052, Australia
| | - Song Thao Le
- School of Civil and Environmental Engineering, Water Research Centre, University of New South Wales, Sydney, NSW 2052, Australia
| | - Anna Yeung
- School of Civil and Environmental Engineering, Water Research Centre, University of New South Wales, Sydney, NSW 2052, Australia
| | - Sarah Wallace
- Environmental Sciences Group, Royal Military College of Canada, Kingston, ON, Canada
| | - Nick Battye
- Environmental Sciences Group, Royal Military College of Canada, Kingston, ON, Canada
| | - David J Patch
- Environmental Sciences Group, Royal Military College of Canada, Kingston, ON, Canada
| | - Michael J Manefield
- School of Civil and Environmental Engineering, Water Research Centre, University of New South Wales, Sydney, NSW 2052, Australia
| | - Kela P Weber
- Environmental Sciences Group, Royal Military College of Canada, Kingston, ON, Canada
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Ke Y, Chen J, Hu X, Tong T, Huang J, Xie S. Emerging perfluoroalkyl substance impacts soil microbial community and ammonia oxidation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 257:113615. [PMID: 31759679 DOI: 10.1016/j.envpol.2019.113615] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 11/08/2019] [Accepted: 11/10/2019] [Indexed: 06/10/2023]
Abstract
Legacy perfluoroalkyl and poly-fluoroalkyl substances (PFASs) are gradually phased out because of their persistence, bioaccumulation, toxicity, long-distance transport and ubiquity in the environment. Alternatively, emerging PFASs are manufactured and released into the environment. It is accepted that PFASs can impact microbiota, although it is still unclear whether emerging PFASs are toxic towards soil microbiota. However, it could be assumed that OBS could impact soil microorganisms because it had similar chemical properties (toxicity and persistence) as legacy PFASs. The present study aimed to explore the influences of an emerging PFAS, namely sodium p-perfluorous nonenoxybenzene sulfonate (OBS), on archaeal, bacterial, and ammonia-oxidizing archaea (AOA) and bacteria (AOB) communities and ammonia oxidation. Grassland soil was amended with OBS at different dosages (0, 1, 10 and 100 mg/kg). After OBS amendment, tolerant microorganisms (e.g., archaea and AOA) were promoted, while susceptive microorganisms (e.g., bacteria and AOB) were inhibited. OBS amendment greatly changed microbial structure. Potential nitrifying activity was inhibited by OBS in a dose-dependent manner during the whole incubation. Furthermore, AOB might play a more important role in ammonia oxidation than AOA. Overall, OBS influenced ammonia oxidation by regulating the activity, abundance and structure of ammonia-oxidizing microorganisms, and could also exert influences on total bacterial and archaeal populations.
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Affiliation(s)
- Yanchu Ke
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Jianfei Chen
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Xiaoyan Hu
- Zhejiang Environmental Monitoring Center, Hangzhou, 310012, China
| | - Tianli Tong
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Jun Huang
- School of Environment, Beijing Key Laboratory for Emerging Organic Contaminants Control (BKLEOC), State Key Joint Laboratory of Environment Simulation and Pollution Control (SKLESPC), Tsinghua University, Beijing, 100084, China
| | - Shuguang Xie
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China.
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Zhang DQ, Wang M, He Q, Niu X, Liang Y. Distribution of perfluoroalkyl substances (PFASs) in aquatic plant-based systems: From soil adsorption and plant uptake to effects on microbial community. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 257:113575. [PMID: 31733970 DOI: 10.1016/j.envpol.2019.113575] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 10/04/2019] [Accepted: 11/03/2019] [Indexed: 06/10/2023]
Abstract
This study systematically explored the distribution of perfluoroalkyl substances (PFASs) through soil adsorption and plant bioaccumulation in aquatic plant-based systems, derived from a surface flow constructed wetland (CW) planted with Typha angustifolia. The water-soil-plant systems were fortified with eight perfluoroalkyl subsntances (PFASs) at different concentrations. The potential for individual PFAS adsorption onto soil substrate and bioaccumulation in the plants increased with the increasing PFAS initial concentrations. Longer-chain PFASs exhibited higher affinity to soil substrate compared to shorter-chain PFASs. The highest concentration in the soil was observed for PFOS (51.3 ng g-1), followed by PFHxS (9.39 ng g-1), and PFOA (5.53 ng g-1) at low PFAS level. The perfluoroalkyl chain length dependent trend was also seen in the roots with the highest individual PFAS concentration for PFOS (68.9 ng g-1), followed by PFOA (18.5 ng g-1) and PFHxS (13.4 ng g-1). By contrast, shorter-chain PFASs were preferentially translocated from roots to shoots in Typha angustifolia. A significant (p < 0.05) positive correlation between bioaccumulation factor (BAFplant/water) (whole plant) and perfluoroalkyl chain length was observed. PFASs content in the plant compartments increased with increasing PFAS concentrations in the soil. Mass balance analysis indicates that approximately 40.7-99.6% of PFAS mass added to the system was adsorbed onto the soil and bioaccumulated in the plant tissues of T. angustifolia. Soil adsorption played a vital role in PFAS mass distribution. The results of Illumina high-throughput sequencing show that the bacterial diversity decreased upon PFAS exposure. The most predominant phyla retrieved were Proteobacteria (24.7-39.3%), followed by Actinobacteria (4.2-41.1%), Verrucomicrobia (7.9-25.1%), Bacteroidetes (10.2-20.4%), Cyanobacteria (0.4-16.5%), and Firmicutes (1.1-6.4%). The PFAS enrichment caused the changes (p > 0.05) in the structure and composition of bacterial community. This study helps to gain insight into a better understanding of the potential for PFASs distribution in an aquatic plant-based system and the impact on dynamic of microbial community exposed to PFASs.
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Affiliation(s)
- Dong Qing Zhang
- Guangdong University of Petrochemical Technology, Maoming, 525000, China.
| | - Mo Wang
- College of Architecture and Urban Planning, Guangzhou University, Guangzhou, 510006, China.
| | - Qiaochong He
- College of Environmental Engineering, Henan University of Technology, Zhengzhou, 450001, China.
| | - Xiaojun Niu
- Guangdong University of Petrochemical Technology, Maoming, 525000, China.
| | - Yanna Liang
- Department of Environmental and Sustainable Engineering, College of Engineering and Applied Sciences, University at Albany, 1400 Washington Ave., Albany NY 12222, USA.
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Zhang D, Zhang W, Liang Y. Distribution of eight perfluoroalkyl acids in plant-soil-water systems and their effect on the soil microbial community. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 697:134146. [PMID: 31484094 DOI: 10.1016/j.scitotenv.2019.134146] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 08/23/2019] [Accepted: 08/26/2019] [Indexed: 06/10/2023]
Abstract
Phytoremediation of per- and polyfluoroalkyl substances (PFAS) appears to be a green remediation technique. To understand distribution of PFAS in plant-soil-water systems, eight perfluoroalkyl acids (PFAAs) at three different concentrations were spiked to Juncus effusus grown in a greenhouse for 21 days. Results from this study demonstrated that mass-based plant uptake of PFAAs correlated positively with concentrations and time. On the basis of removal percentages, the higher the initial PFAA concentrations, the less removal by plant was observed. With the low level of PFAA spike, J. effusus roots and shoots accumulated 30-40% of PFAAs (C4 to C8) except PFOS with a lower uptake of approximately 20%. Together with soil sorption, >82.8% of PFAAs were removed from the aqueous solution in 21 days. Uptake of PFAAs also depended on their carbon chain length and plant compartments (roots or shoots). This dependence resulted in different bioaccumulation factors and translocation factors for different PFAAs. Besides physical and chemical distribution, PFAAs, especially those added at the high level led to significant change of soil bacterial communities in terms of composition and structure. Potential impact to the community's functions warrants further investigations.
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Affiliation(s)
- Dongqing Zhang
- College of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
| | - Weilan Zhang
- Department of Environmental and Sustainable Engineering, College of Engineering and Applied Sciences, University at Albany, 1400 Washington Ave., Albany, NY 12222, United States of America
| | - Yanna Liang
- Department of Environmental and Sustainable Engineering, College of Engineering and Applied Sciences, University at Albany, 1400 Washington Ave., Albany, NY 12222, United States of America.
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Groffen T, Rijnders J, Verbrigghe N, Verbruggen E, Prinsen E, Eens M, Bervoets L. Influence of soil physicochemical properties on the depth profiles of perfluoroalkylated acids (PFAAs) in soil along a distance gradient from a fluorochemical plant and associations with soil microbial parameters. CHEMOSPHERE 2019; 236:124407. [PMID: 31545204 DOI: 10.1016/j.chemosphere.2019.124407] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 07/17/2019] [Accepted: 07/18/2019] [Indexed: 06/10/2023]
Abstract
The widespread use of perfluoroalkylated acids (PFAAs) has led to a global presence in the environment, in which they accumulate and may cause detrimental effects. Although soils are known sinks for many persistent organic pollutants, still little is known on the behaviour of PFAAs in soils. Furthermore, studies that examine the relationships between PFAA concentrations and soil microbial parameters are scarce. The 3 M fluorochemical plant near Antwerp has been characterized as a PFAAs hotspot. In the present study, we examined the vertical distribution of 15 PFAAs and their associations with multiple physicochemical soil properties along a distance gradient from this hotspot. Additionally, we tested the relationships between PFAA concentrations in the top soil with soil respiration, microbial activity and microbial biomass. Our results show that both perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) concentrations were elevated in the subsurface layer (up to 50 cm), after which concentrations decreased again, suggesting a downward migration of both analytes in the soil. This downward movement might pose a potential threat for the contamination of the groundwater and, consequently, organisms that rely on this water for consumption. The soil concentrations were influenced by multiple physicochemical properties of the soil, which suggests differences in bioavailability and sorption/desorption capacities between different soil types. We did not observe any influence of PFAA contamination in the top soil on microbial activity and biomass nor soil respiration.
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Affiliation(s)
- Thimo Groffen
- Systemic Physiological and Ecotoxicologal Research (SPHERE), Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium; Behavioural Ecology and Ecophysiology Group (BECO), Department of Biology, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium.
| | - Jet Rijnders
- Systemic Physiological and Ecotoxicologal Research (SPHERE), Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium.
| | - Niel Verbrigghe
- Centre of Excellence Plants and Ecosystems (PLECO), Department of Biology, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium.
| | - Erik Verbruggen
- Centre of Excellence Plants and Ecosystems (PLECO), Department of Biology, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium.
| | - Els Prinsen
- Integrated Molecular Plant Physiology Research (IMPRES), Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium.
| | - Marcel Eens
- Behavioural Ecology and Ecophysiology Group (BECO), Department of Biology, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium.
| | - Lieven Bervoets
- Systemic Physiological and Ecotoxicologal Research (SPHERE), Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium.
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Chen L, Tsui MMP, Lam JCW, Hu C, Wang Q, Zhou B, Lam PKS. Variation in microbial community structure in surface seawater from Pearl River Delta: Discerning the influencing factors. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 660:136-144. [PMID: 30639711 DOI: 10.1016/j.scitotenv.2018.12.480] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 12/29/2018] [Accepted: 12/31/2018] [Indexed: 06/09/2023]
Abstract
Contamination of perfluoroalkyl acids (PFAAs) is ubiquitously detected in various environments. However, their potential effects on microbial communities remain largely unknown. In this study, surface seawater of the Pearl River Delta (PRD) is sampled to measure PFAA concentrations and profile the structure of free-living microbial community. Total PFAAs concentrations range from 131 to 1563 pg L-1 in surface seawater. PFOS (16-470 pg L-1), PFOA (27-272 pg L-1), PFHpA (18-201 pg L-1) and PFBA (25-152 pg L-1) are the major homologues, indicating continued industrial application or release of PFOS and a gradual shift towards using shorter-chain PFAAs. Concentrations of PFAAs from this recent cruise are much lower than previous reports, which may be due to the effective management of PFAA usage around PRD region. In addition, the microbial community in PRD surface seawater is predominantly colonized by the Proteobacteria phylum (27.2 to 61.5%) and the Synechococcus genus (5.6 to 38.6%). The structure of the microbial communities varies among stations, mainly resulting from different abundances of Synechococcus, Prochlorococcus and Nitrosopumilus. Geochemical parameters (e.g., nutrients and salinity) and phytoplankton are significantly associated with the microbial community dynamics in surface seawater. In the interactive network of microbiota, a subset of bacteria (i.e., Fluviicola, Nitrosopumilus, Limnohabitans, Sediminibacterium, C39 and Polynucleobacter) shows significantly positive correlations with PFAAs (R > 0.6; P < 0.001). Overall, this study gives a timely monitoring of PFAA pollution around PRD area. Shift in environmental microbiota by geochemical factors and phytoplankton is also observed, which may affect biogeochemical cycling.
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Affiliation(s)
- Lianguo Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
| | - Mirabelle M P Tsui
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China
| | - James C W Lam
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China; Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong, China
| | - Chenyan Hu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430072, China
| | - Qi Wang
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Bingsheng Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Paul K S Lam
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China
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Chen L, Tsui MMP, Lam JCW, Wang Q, Hu C, Wai OWH, Zhou B, Lam PKS. Contamination by perfluoroalkyl substances and microbial community structure in Pearl River Delta sediments. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 245:218-225. [PMID: 30423536 DOI: 10.1016/j.envpol.2018.11.005] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 10/31/2018] [Accepted: 11/02/2018] [Indexed: 06/09/2023]
Abstract
Environmental microbiota play essential roles in the maintenance of many biogeochemical processes, including nutrient cycling and pollutant degradation. They are also highly susceptible to changes in environmental stressors, with environmental pollutants being key disruptors of microbial dynamics. In the present study, a scientific cruise was launched on July 2017 around Pearl River Delta, a suitable studying site for perfluoroalkyl substances (PFASs) in the wake of the severe PFAS pollution. Surface sediment samples were collected from 18 representative stations to assess PFAS accumulation and profile microbial community. PFAS concentrations ranged from 24.2 to 181.4 pg/g dry weight in sediment, and perfluorooctanesulfonic acid (PFOS) was the dominant homologue. The concentrations of PFAS homologues in the current study were much lower than those reported in previous studies, implying effective management and control of pollution from PFAS-related industries. 16S rRNA gene amplicon sequencing revealed that Proteobacteria was the dominant phylum, while nitrogen-metabolizing Nitrosopumilus and sulfate-reducing Desulfococcus genera were the most abundant. Variations in microbial communities among sampling stations were mainly due to the differences in abundances of Escherichia, Nitrosopumilus, and Desulfococcus. The outbreak of Escherichia bacteria at specific coastal stations potentially indicated the discharge of fecal matter into the marine environment. Dissolved oxygen (DO) in bottom seawater significantly influenced the structure of microbial communities in the sediment, while current study failed to observe significant effects from PFAS pollutants. Positive correlations were found between DO and sulfate-reducing bacteria in Desulfococcus and GOUTA19 genera. Overall, this study explored relationships between environmental variables (e.g., PFAS pollutants) and sediment bacteria. Biogeochemical parameters significantly influenced the structure and composition of microbial communities in sediment.
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Affiliation(s)
- Lianguo Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
| | - Mirabelle M P Tsui
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - James C W Lam
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong SAR, China; Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong SAR, China
| | - Qi Wang
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Chenyan Hu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430072, China
| | - Onyx W H Wai
- Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China
| | - Bingsheng Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Paul K S Lam
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong SAR, China
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