1
|
Pereyra-Camacho MA, Balderas-Hernández VE, Barba-de la Rosa AP, De Leon-Rodriguez A. Whole-cell biocatalysis for phthalate esters biodegradation in wastewater by a salt tolerant bacterial SSB-consortium. CHEMOSPHERE 2024:143243. [PMID: 39233295 DOI: 10.1016/j.chemosphere.2024.143243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 08/22/2024] [Accepted: 08/31/2024] [Indexed: 09/06/2024]
Abstract
Phthalic acid esters (PAE) are widely used as plasticizers and have been classified as ubiquitous environmental contaminants of primary concern. PAE have accumulated intensively in surface water, groundwater, and wastewaters; thus, PAE degradation is essential. In the present study, the ability of a salt tolerant bacterial (SSB)-consortium to degrade synthetic wastewater-phthalates with alkyl chains of different lengths, such as diethyl phthalate (DEP), di-n-butyl phthalate (DBP), benzyl butyl phthalate (BBP), and di(2-ethylhexyl) phthalate (DEHP) was characterized. A central composite design-response surface methodology was applied to optimize the degradation of each phthalate, where the independent variables were temperature (21 to 41°C), pH (5.3 to 8.6) and PAE concentration (79.5 to 920.4 mg L-1), and Gas Chromatography-Mass Spectrometry was used to identify the metabolites generated during phthalate degradation. Optimal conditions were 31°C, pH 7.0, and an initial PAE concentration of 500 mg L-1, where the SSB-consortium removed 84.9%, 98.47%, 99.09% and 98.25% of initial DEP, DBP, BBP, and DEHP, respectively, in 168 h. A first-order kinetic model explained that the biodegradation and the half-life of PAE degradation ranged from 12.8 to 29.8 h. Genera distribution of the SSB-consortium was determined by bacterial meta-taxonomic analysis. Serratia, Methylobacillus, Acrhomobacter, and Pseudomonas were the predominant genera; however, the type of phthalate directly affected their distribution. Scanning electron microscopy analysis showed that high concentrations (1000 mg L-1) of phthalates induced morphological alterations in the bacterial (SSB)-consortium. The metabolite profiling showed that DEP, DBP, BBP, and DEHP could be fully metabolized through the de-esterification and β-oxidation pathways. Therefore, the SSB-consortium can be considered a potential candidate for bioremediation of complex phthalate-contaminated water resources.
Collapse
Affiliation(s)
- Marco A Pereyra-Camacho
- IPICyT, Instituto Potosino de Investigación Científica y Tecnológica A.C. Camino a la Presa San José No. 2055, Lomas 4a sección, San Luis Potosí, San Luis Potosí, 78216 México
| | - Victor E Balderas-Hernández
- IPICyT, Instituto Potosino de Investigación Científica y Tecnológica A.C. Camino a la Presa San José No. 2055, Lomas 4a sección, San Luis Potosí, San Luis Potosí, 78216 México
| | - Ana P Barba-de la Rosa
- IPICyT, Instituto Potosino de Investigación Científica y Tecnológica A.C. Camino a la Presa San José No. 2055, Lomas 4a sección, San Luis Potosí, San Luis Potosí, 78216 México
| | - Antonio De Leon-Rodriguez
- IPICyT, Instituto Potosino de Investigación Científica y Tecnológica A.C. Camino a la Presa San José No. 2055, Lomas 4a sección, San Luis Potosí, San Luis Potosí, 78216 México.
| |
Collapse
|
2
|
Yan S, Wang J, Zhang J, Ning J, Chen S, Xie S. Bacterial community composition and function vary with farmland type and soil depth around a mining area. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 360:124510. [PMID: 39002750 DOI: 10.1016/j.envpol.2024.124510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 06/04/2024] [Accepted: 07/04/2024] [Indexed: 07/15/2024]
Abstract
Heavy metal pollution can have adverse impacts on microorganisms, plants and even human health. To date, the impact of heavy metals on bacteria in farmland has yielded poor attention, and there is a paucity of knowledge on the impact of land type on bacteria in mining area with heavy metal pollution. Around a metal-contaminated mining area, two soil depths in three types of farmlands were selected to explore the composition and function of bacteria and their correlations with the types and contents of heavy metals. The compositions and functions of bacterial communities at the three different agricultural sites were disparate to a certain extent. Some metabolic functions of bacterial community in the paddy field were up-regulated compared with those at other site. These results observed around mining area were different from those previously reported in conventional farmlands. In addition, bacterial community composition in the top soils was relatively complex, while in the deep soils it became more unitary and extracellular functional genes got enriched. Meanwhile, heavy metal pollution may stimulate the enrichment of certain bacteria to protect plants from damage. This finding may aid in understanding the indirect effect of metal contamination on plants and thus putting forward feasible strategies for the remediation of metal-contaminated sites. MAIN FINDINGS OF THE WORK: This was the first study to comprehensively explore the influence of heavy metal pollution on the soil bacterial communities and metabolic potentials in different agricultural land types and soil depths around a mining area.
Collapse
Affiliation(s)
- Shuang Yan
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Ji Wang
- South China Institute of Environmental Sciences (SCIES), Ministry of Ecology and Environment (MEE), Guangzhou 510655, China
| | - Jianqiang Zhang
- South China Institute of Environmental Sciences (SCIES), Ministry of Ecology and Environment (MEE), Guangzhou 510655, China
| | - Jialian Ning
- South China Institute of Environmental Sciences (SCIES), Ministry of Ecology and Environment (MEE), Guangzhou 510655, China
| | - Sili Chen
- South China Institute of Environmental Sciences (SCIES), Ministry of Ecology and Environment (MEE), Guangzhou 510655, China.
| | - Shuguang Xie
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| |
Collapse
|
3
|
Kou L, Chen H, Zhang X, Liu S, Zhang B, Zhu H, Du Z. Enhanced degradation of phthalate esters (PAEs) by biochar-sodium alginate immobilised Rhodococcus sp. KLW-1. ENVIRONMENTAL TECHNOLOGY 2024; 45:3367-3380. [PMID: 37191443 DOI: 10.1080/09593330.2023.2215456] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 04/28/2023] [Indexed: 05/17/2023]
Abstract
In this study, a new strain of bacteria, named Rhodococcus sp. KLW-1, was isolated from farmland soil contaminated by plastic mulch for more than 30 years. To improve the application performance of free bacteria and find more ways to use waste biochar, KLW-1 was immobilised on waste biochar by sodium alginate embedding method to prepare immobilised pellet. Response Surface Method (RSM) predicted that under optimal conditions (3% sodium alginate, 2% biochar and 4% CaCl2), di (2-ethylhexyl) phthalate (DEHP) degradation efficiency of 90.48% can be achieved. Under the adverse environmental conditions of pH 5 and 9, immobilisation increased the degradation efficiency of 100 mg/L DEHP by 16.42% and 11.48% respectively, and under the high-stress condition of 500 mg/L DEHP concentration, immobilisation increased the degradation efficiency from 71.52% to 91.56%, making the immobilised pellets have strong stability and impact load resistance to environmental stress. In addition, immobilisation also enhanced the degradation efficiency of several phthalate esters (PAEs) widely existing in the environment. After four cycles of utilisation, the immobilised particles maintained stable degradation efficiency for different PAEs. Therefore, immobilised pellets have great application potential for the remediation of the actual environment.
Collapse
Affiliation(s)
- Liangwei Kou
- School of Environmental Engineering, Henan University of Technology, Zhengzhou, People's Republic of China
- Henan International Joint Laboratory of Environmental Pollution, Remediation and Grain Quality Security, Zhengzhou, People's Republic of China
| | - Hanyu Chen
- School of Environmental Engineering, Henan University of Technology, Zhengzhou, People's Republic of China
- Henan International Joint Laboratory of Environmental Pollution, Remediation and Grain Quality Security, Zhengzhou, People's Republic of China
| | - Xueqi Zhang
- School of Environmental Engineering, Henan University of Technology, Zhengzhou, People's Republic of China
- Henan International Joint Laboratory of Environmental Pollution, Remediation and Grain Quality Security, Zhengzhou, People's Republic of China
| | - Shaoqin Liu
- School of Environmental Engineering, Henan University of Technology, Zhengzhou, People's Republic of China
- Henan International Joint Laboratory of Environmental Pollution, Remediation and Grain Quality Security, Zhengzhou, People's Republic of China
| | - Baozhong Zhang
- School of Environmental Engineering, Henan University of Technology, Zhengzhou, People's Republic of China
- Henan International Joint Laboratory of Environmental Pollution, Remediation and Grain Quality Security, Zhengzhou, People's Republic of China
| | - Huina Zhu
- School of Environmental Engineering, Henan University of Technology, Zhengzhou, People's Republic of China
- Henan International Joint Laboratory of Environmental Pollution, Remediation and Grain Quality Security, Zhengzhou, People's Republic of China
| | - Zhimin Du
- School of Environmental Engineering, Henan University of Technology, Zhengzhou, People's Republic of China
- Henan International Joint Laboratory of Environmental Pollution, Remediation and Grain Quality Security, Zhengzhou, People's Republic of China
| |
Collapse
|
4
|
Tuli A, Suresh G, Halder N, Velpandian T. Analysis and remediation of phthalates in aquatic matrices: current perspectives. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:23408-23434. [PMID: 38456985 DOI: 10.1007/s11356-024-32670-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 02/23/2024] [Indexed: 03/09/2024]
Abstract
Phthalic acid esters (PAEs) are high production volume chemicals used extensively as plasticizers, to increase the flexibility of the main polymer. They are reported to leach into their surroundings from plastic products and are now a ubiquitous environmental contaminant. Phthalate levels have been determined in several environmental matrices, especially in water. These levels serve as an indicator of plasticizer abuse and plastic pollution, and also serve as a route of exposure to different species including humans. Reports published on effects of different PAEs on experimental models demonstrate their carcinogenic, teratogenic, reproductive, and endocrine disruptive effects. Therefore, regular monitoring and remediation of environmental water samples is essential to ascertain their hazard quotient and daily exposure levels. This review summarises the extraction and detection techniques available for phthalate analysis in water samples such as chromatography, biosensors, immunoassays, and spectroscopy. Current remediation strategies for phthalate removal such as adsorption, advanced oxidation, and microbial degradation have also been highlighted.
Collapse
Affiliation(s)
- Anannya Tuli
- High Precision Bio-Analytical Facility (DST-FIST Sponsored), Ocular Pharmacology and Pharmacy, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Gayatri Suresh
- High Precision Bio-Analytical Facility (DST-FIST Sponsored), Ocular Pharmacology and Pharmacy, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Nabanita Halder
- High Precision Bio-Analytical Facility (DST-FIST Sponsored), Ocular Pharmacology and Pharmacy, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Thirumurthy Velpandian
- High Precision Bio-Analytical Facility (DST-FIST Sponsored), Ocular Pharmacology and Pharmacy, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, 110029, India.
| |
Collapse
|
5
|
Mondal T, Mondal S, Ghosh SK, Pal P, Soren T, Maiti TK. Dibutyl phthalate degradation by Paenarthrobacter ureafaciens PB10 through downstream product myristic acid and its bioremediation potential in contaminated soil. CHEMOSPHERE 2024; 352:141359. [PMID: 38309604 DOI: 10.1016/j.chemosphere.2024.141359] [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: 10/09/2023] [Revised: 01/30/2024] [Accepted: 01/31/2024] [Indexed: 02/05/2024]
Abstract
Dibutyl phthalate (DBP) is a widely used plasticizer to make plastic flexible and long-lasting. It is easily accessible in a broad spectrum of environments as a result of the rising level of plastic pollution. This compound is considered a top-priority toxicant and persistent organic pollutant by international environmental agencies for its endocrine disruptive and carcinogenic propensities. To mitigate the DBP in the soil, one DBP-degrading bacterial strain was isolated from a plastic-polluted landfill and identified as Paenarthrobacter ureafaciens PB10 by 16S rRNA gene sequence-based homology. The strain was found to develop a distinct transparent halo zone around grown colonies on an agar plate supplemented with DBP. The addition of yeast extract (100 mg/L) as a nutrient source accelerated cell biomass production and DBP degradation rate; however, the presence of glucose suppressed DBP degradation by the PB10 strain without affecting its ability to proliferate. The strain PB10 was efficient in eliminating DBP under various pH conditions (5.0-8.0). Maximum cell growth and degradation of 99.49% at 300 mg/L DBP were achieved in 72 h at the optimized mineral salt medium (MS) conditions of pH 7.0 and 32 °C. Despite that, when the concentration of DBP rose to 3000 mg/L, the DBP depletion rate was measured at 79.34% in 72 h. Some novel intermediate metabolites, like myristic acid, hexadecanoic acid, stearic acid, and the methyl derivative of 4-hydroxyphenyl acetate, along with monobutyl phthalate and phthalic acid, were detected in the downstream degradation process of DBP through GC-MS profiling. Furthermore, in synchronization with native soil microbes, this PB10 strain successfully removed a notable amount of DBP (up to 54.11%) from contaminated soil under microcosm study after 10 d. Thus, PB10 has effective DBP removal ability and is considered a potential candidate for bioremediation in DBP-contaminated sites.
Collapse
Affiliation(s)
- Tanushree Mondal
- Microbiology Laboratory, Department of Botany, The University of Burdwan, Golapbag, Purba Bardhaman, P. O. -Rajbati, PIN-713104, West Bengal, India.
| | - Sayanta Mondal
- Microbiology Laboratory, Department of Botany, The University of Burdwan, Golapbag, Purba Bardhaman, P. O. -Rajbati, PIN-713104, West Bengal, India.
| | - Sudip Kumar Ghosh
- Microbiology Laboratory, Department of Botany, The University of Burdwan, Golapbag, Purba Bardhaman, P. O. -Rajbati, PIN-713104, West Bengal, India.
| | - Priyanka Pal
- Microbiology Laboratory, Department of Botany, The University of Burdwan, Golapbag, Purba Bardhaman, P. O. -Rajbati, PIN-713104, West Bengal, India
| | - Tithi Soren
- Microbiology Laboratory, Department of Botany, The University of Burdwan, Golapbag, Purba Bardhaman, P. O. -Rajbati, PIN-713104, West Bengal, India.
| | - Tushar Kanti Maiti
- Microbiology Laboratory, Department of Botany, The University of Burdwan, Golapbag, Purba Bardhaman, P. O. -Rajbati, PIN-713104, West Bengal, India.
| |
Collapse
|
6
|
Kou L, Chen H, Zhang X, Liu S, Zhang B, Zhu H. Biodegradation of di(2-ethylhexyl) phthalate by a new bacterial consortium. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 88:92-105. [PMID: 37452536 PMCID: wst_2023_198 DOI: 10.2166/wst.2023.198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
Di(2-ethylhexyl) phthalate (DEHP) with continuous high concentration was used as the sole carbon and energy source to isolate a new bacterial consortium (K1) from agricultural soil covered with plastic film for a long time. Unclassified Comamonadaceae, Achromobacter, and Pseudomonas in K1 were identified as major genera of the consortium by high-throughput sequencing, and unclassified Commanadaceae was first reported to be related to DEHP degradation. Response surface method (RSM) showed that the optimum conditions for K1 to degrade DEHP were 31.4 °C, pH 7.3, and a concentration of 420 mg L-1. K1 maintains normal cell viability and stable DEHP degradation efficiency in the range of 10-3000 mg L-1 DEHP concentration, which is superior to existing research. The biodegradation of DEHP followed first-order kinetics when the initial concentration of DEHP was between 100 and 3,000 mg L-1. GC-MS analysis of different treatment groups showed that DEHP was degraded by the consortium group through the de-esterification pathway, and treatment effect was significantly better than that of the single bacteria treatment group. The subsequent substrate utilization experiment further confirmed that K1 could quickly mineralize DEHP. In addition, K1 has high degradation capacity for the most common phthalate acid esters in the environment.
Collapse
Affiliation(s)
- Liangwei Kou
- School of Environmental Engineering, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, Henan Province, China; Henan International Joint Laboratory of Environmental Pollution, Remediation and Grain Quality Security, Zhengzhou 450001, Henan Province, China E-mail:
| | - Hanyu Chen
- School of Environmental Engineering, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, Henan Province, China; Henan International Joint Laboratory of Environmental Pollution, Remediation and Grain Quality Security, Zhengzhou 450001, Henan Province, China
| | - Xueqi Zhang
- School of Environmental Engineering, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, Henan Province, China; Henan International Joint Laboratory of Environmental Pollution, Remediation and Grain Quality Security, Zhengzhou 450001, Henan Province, China
| | - Shaoqin Liu
- School of Environmental Engineering, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, Henan Province, China; Henan International Joint Laboratory of Environmental Pollution, Remediation and Grain Quality Security, Zhengzhou 450001, Henan Province, China
| | - Baozhong Zhang
- School of Environmental Engineering, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, Henan Province, China; Henan International Joint Laboratory of Environmental Pollution, Remediation and Grain Quality Security, Zhengzhou 450001, Henan Province, China
| | - Huina Zhu
- School of Environmental Engineering, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, Henan Province, China; Henan International Joint Laboratory of Environmental Pollution, Remediation and Grain Quality Security, Zhengzhou 450001, Henan Province, China
| |
Collapse
|
7
|
Microbiome engineering for bioremediation of emerging pollutants. Bioprocess Biosyst Eng 2023; 46:323-339. [PMID: 36029349 DOI: 10.1007/s00449-022-02777-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 08/12/2022] [Indexed: 11/02/2022]
Abstract
Axenic microbial applications in the open environment are unrealistic and may not be always practically viable. Therefore, it is important to use mixed microbial cultures and their interactions with the microbiome in the targeted ecosystem to perform robust functions towards their sustainability in harsh environmental conditions. Emerging pollutants like phthalates and hydrocarbons that are toxic to several aquatic and terrestrial life forms in the water bodies and lands are an alarming situation. The present review explores the possibility of devising an inclusive eco-friendly strategy like microbiome engineering which proves to be a unique and crucial technology involving the power of microbial communication through quorum sensing. This review discusses the interspecies and intra-species communications between different microbial groups with their respective environments. Moreover, this review also envisages the efforts for designing the next level of microbiome-host engineering concept (MHEC). The focus of the review also extended toward using omics and metabolic network analysis-based tools for effective microbiome engineering. These approaches might be quite helpful in the future to understand such microbial interactions but it will be challenging to implement in the real environment to get the desired functions. Finally, the review also discusses multiple approaches for the bioremediation of toxic chemicals from the soil environment.
Collapse
|
8
|
Viljoen SJ, Brailsford FL, Murphy DV, Hoyle FC, Chadwick DR, Jones DL. Leaching of phthalate acid esters from plastic mulch films and their degradation in response to UV irradiation and contrasting soil conditions. JOURNAL OF HAZARDOUS MATERIALS 2023; 443:130256. [PMID: 36327845 DOI: 10.1016/j.jhazmat.2022.130256] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/15/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
Phthalate acid esters (PAEs) are commonly used plastic additives, not chemically bound to the plastic that migrate into surrounding environments, posing a threat to environmental and human health. Dibutyl phthalate (DBP) and di(2-ethylhexyl) phthalate (DEHP) are two common PAEs found in agricultural soils, where degradation is attributed to microbial decomposition. Yet the impact of the plastic matrix on PAE degradation rates is poorly understood. Using 14C-labelled DBP and DEHP we show that migration from the plastic matrix into soil represents a key rate limiting step in their bioavailability and subsequent degradation. Incorporating PAEs into plastic film decreased their degradation in soil, DBP (DEHP) from 79% to 21% (9% to <1%), over four months when compared to direct application of PAEs. Mimicking surface soil conditions, we demonstrated that exposure to ultraviolet radiation accelerated PAE mineralisation twofold. Turnover of PAE was promoted by the addition of biosolids, while the presence of plants and other organic residues failed to promote degradation. We conclude that PAEs persist in soil for longer than previously thought due to physical trapping within the plastic matrix, suggesting PAEs released from plastics over very long time periods lead to increasing levels of contamination.
Collapse
Affiliation(s)
- Samantha J Viljoen
- Bioplastics Innovation Hub, Murdoch University, Murdoch, WA 6105, Australia; SoilsWest, Centre for Sustainable Farming Systems, Food Futures Institute, Murdoch University, Murdoch, WA 6105, Australia; Environment Centre Wales, Bangor University, Bangor, Gwynedd LL57 2UW, UK.
| | - Francesca L Brailsford
- Bioplastics Innovation Hub, Murdoch University, Murdoch, WA 6105, Australia; SoilsWest, Centre for Sustainable Farming Systems, Food Futures Institute, Murdoch University, Murdoch, WA 6105, Australia
| | - Daniel V Murphy
- Bioplastics Innovation Hub, Murdoch University, Murdoch, WA 6105, Australia; SoilsWest, Centre for Sustainable Farming Systems, Food Futures Institute, Murdoch University, Murdoch, WA 6105, Australia
| | - Frances C Hoyle
- Bioplastics Innovation Hub, Murdoch University, Murdoch, WA 6105, Australia; SoilsWest, Centre for Sustainable Farming Systems, Food Futures Institute, Murdoch University, Murdoch, WA 6105, Australia
| | - David R Chadwick
- Environment Centre Wales, Bangor University, Bangor, Gwynedd LL57 2UW, UK
| | - Davey L Jones
- Bioplastics Innovation Hub, Murdoch University, Murdoch, WA 6105, Australia; SoilsWest, Centre for Sustainable Farming Systems, Food Futures Institute, Murdoch University, Murdoch, WA 6105, Australia; Environment Centre Wales, Bangor University, Bangor, Gwynedd LL57 2UW, UK
| |
Collapse
|
9
|
Mondal T, Mondal S, Ghosh SK, Pal P, Soren T, Pandey S, Maiti TK. Phthalates - A family of plasticizers, their health risks, phytotoxic effects, and microbial bioaugmentation approaches. ENVIRONMENTAL RESEARCH 2022; 214:114059. [PMID: 35961545 DOI: 10.1016/j.envres.2022.114059] [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: 04/19/2022] [Revised: 07/18/2022] [Accepted: 08/03/2022] [Indexed: 06/15/2023]
Abstract
Phthalates are a family of reprotoxicant compounds, predominantly used as a plasticizer to improve the flexibility and longevity of consumable plastic goods. After their use these plastic products find their way to the waste disposal sites where they leach out the hazardous phthalates present within them, into the surrounding environment, contaminating soil, groundwater resources, and the nearby water bodies. Subsequently, phthalates move into the living system through the food chain and exhibit the well-known phenomenon of biological magnification. Phthalates as a primary pollutant have been classified as 1B reprotoxicants and teratogens by different government authorities and they have thus imposed restrictions on their use. Nevertheless, the release of these compounds in the environment is unabated. Bioremediation has been suggested as one of the ways of mitigating this menace, but studies regarding the field applications of phthalate utilizing microbes for this purpose are limited. Through this review, we endeavor to make a deeper understanding of the cause and concern of the problem and to find out a possible solution to it. The review critically emphasizes the various aspects of phthalates toxicity, including their chemical nature, human health risks, phytoaccumulation and entry into the food chain, microbial role in phthalate degradation processes, and future challenges.
Collapse
Affiliation(s)
- Tanushree Mondal
- Microbiology Laboratory, Department of Botany, The University of Burdwan, Golapbag, Purba Bardhaman, P. O. -Rajbati, 713104, West Bengal, India.
| | - Sayanta Mondal
- Microbiology Laboratory, Department of Botany, The University of Burdwan, Golapbag, Purba Bardhaman, P. O. -Rajbati, 713104, West Bengal, India.
| | - Sudip Kumar Ghosh
- Microbiology Laboratory, Department of Botany, The University of Burdwan, Golapbag, Purba Bardhaman, P. O. -Rajbati, 713104, West Bengal, India.
| | - Priyanka Pal
- Microbiology Laboratory, Department of Botany, The University of Burdwan, Golapbag, Purba Bardhaman, P. O. -Rajbati, 713104, West Bengal, India.
| | - Tithi Soren
- Microbiology Laboratory, Department of Botany, The University of Burdwan, Golapbag, Purba Bardhaman, P. O. -Rajbati, 713104, West Bengal, India.
| | - Sanjeev Pandey
- Department of Botany, Banwarilal Bhalotia College, Asansol, 713303, West Bengal, India.
| | - Tushar Kanti Maiti
- Microbiology Laboratory, Department of Botany, The University of Burdwan, Golapbag, Purba Bardhaman, P. O. -Rajbati, 713104, West Bengal, India.
| |
Collapse
|
10
|
Li C, Liu C, Li R, Liu Y, Xie J, Li B. Biodegradation of Dibutyl Phthalate by the New Strain Acinetobacter baumannii DP-2. TOXICS 2022; 10:toxics10090532. [PMID: 36136497 PMCID: PMC9505308 DOI: 10.3390/toxics10090532] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/04/2022] [Accepted: 09/07/2022] [Indexed: 05/13/2023]
Abstract
Optimizing the culture conditions of DBP degradation by bacteria and investigating its biodegradation pathways have a great importance to develop effective PAEs pollution control strategies. In this study, we investigated the cultivation condition optimization, degradation kinetics, and degradation pathways of a newly isolated dibutyl phthalate (DBP) degradation strain, which was isolated from activated sludge and identified as Acinetobacter baumannii DP-2 via morphological observation, biochemical identification, and 16S rDNA sequence analysis. The degradation conditions were optimized based on the results of single-factor experiments and response surface optimization experiments. The DBP degradation rate of Acinetobacter baumannii DP-2 reached up to 85.86% when the inoculation amount was 17.14%, the DBP concentration was 9.81 mg·L-1 and the NaCl concentration was 5 g·L-1. The GC-MS analysis results indicated that the intermediate metabolites of Acinetobacter baumannii DP-2 mainly consisted of DMP, MBP, PA, and benzoic acid derivatives, which confirmed the degradation pathway from DBP to PA under aerobic pathway and then to BA under anaerobic pathway. In summary, Acinetobacter baumannii DP-2 shows great potential for the degradation of DBP in contaminated soils.
Collapse
Affiliation(s)
- Cheng Li
- College of Resources and Environmental Science, Hebei Agricultural University, Baoding 071001, China
- State Key Laboratory of North China Crop Improvement and Regulation, Baoding 071001, China
| | - Chunjing Liu
- College of Resources and Environmental Science, Hebei Agricultural University, Baoding 071001, China
- Key Laboratory for Farmland Eco-Environment of Hebei Province, Baoding 071001, China
| | - Rongzhen Li
- College of Resources and Environmental Science, Hebei Agricultural University, Baoding 071001, China
- Key Laboratory for Farmland Eco-Environment of Hebei Province, Baoding 071001, China
| | - Yue Liu
- College of Resources and Environmental Science, Hebei Agricultural University, Baoding 071001, China
- Key Laboratory for Farmland Eco-Environment of Hebei Province, Baoding 071001, China
| | - Jianzhi Xie
- College of Resources and Environmental Science, Hebei Agricultural University, Baoding 071001, China
- Key Laboratory for Farmland Eco-Environment of Hebei Province, Baoding 071001, China
- Correspondence: (J.X.); (B.L.); Tel.: +86-0312-7528237 (J.X.); +86-0312-7526856 (B.L.)
| | - Bowen Li
- College of Resources and Environmental Science, Hebei Agricultural University, Baoding 071001, China
- Key Laboratory for Farmland Eco-Environment of Hebei Province, Baoding 071001, China
- Correspondence: (J.X.); (B.L.); Tel.: +86-0312-7528237 (J.X.); +86-0312-7526856 (B.L.)
| |
Collapse
|
11
|
Microbial Consortia Are Needed to Degrade Soil Pollutants. Microorganisms 2022; 10:microorganisms10020261. [PMID: 35208716 PMCID: PMC8874626 DOI: 10.3390/microorganisms10020261] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 12/30/2021] [Accepted: 01/07/2022] [Indexed: 12/10/2022] Open
Abstract
Soil pollution is one of the most serious environmental problems globally due to the weak self-purification ability, long degradation time, and high cost of cleaning soil pollution. The pollutants in the soil can be transported into the human body through water or dust, causing adverse effects on human health. The latest research has shown that the clean-up of soil pollutants through microbial consortium is a very promising method. This review provides an in-depth discussion on the efficient removal, bio-adsorption, or carbonated precipitation of organic and inorganic pollutants by the microbial consortium, including PAHs, BPS, BPF, crude oil, pyrene, DBP, DOP, TPHP, PHs, butane, DON, TC, Mn, and Cd. In view of the good degradation ability of the consortium compared to single strains, six different synergistic mechanisms and corresponding microorganisms are summarized. The microbial consortium obtains such activities through enhancing synergistic degradation, reducing the accumulation of intermediate products, generating the crude enzyme, and self-regulating, etc. Furthermore, the degradation efficiency of pollutants can be greatly improved by adding chemical materials such as the surfactants Tween 20, Tween 80, and SDS. This review provides insightful information regarding the application of microbial consortia for soil pollutant removal.
Collapse
|
12
|
Zhao Z, Liu C, Xu Q, Ahmad S, Zhang H, Pang Y, Aikemu A, Liu Y, Yan H. Characterization and genomic analysis of an efficient dibutyl phthalate degrading bacterium Microbacterium sp. USTB-Y. World J Microbiol Biotechnol 2021; 37:212. [PMID: 34738191 DOI: 10.1007/s11274-021-03181-5] [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: 08/12/2021] [Accepted: 10/27/2021] [Indexed: 11/26/2022]
Abstract
A promising bacterial strain for biodegrading dibutyl phthalate (DBP) was successfully isolated from activated sludge and characterized as a potential novel Microbacterium sp. USTB-Y based on 16S rRNA sequence analysis and whole genome average nucleotide identity (ANI). Initial DBP of 50 mg/L could be completely biodegraded by USTB-Y both in mineral salt medium and in DBP artificially contaminated soil within 12 h at the optimal culture conditions of pH 7.5 and 30 ℃, which indicates that USTB-Y has a strong ability in DBP biodegradation. Phthalic acid (PA) was identified as the end-product of DBP biodegraded by USTB-Y using GC/MS. The draft genome of USTB-Y was sequenced by Illumina NovaSeq and 29 and 188 genes encoding for putative esterase/carboxylesterase and hydrolase/alpha/beta hydrolase were annotated based on NR (non redundant protein sequence database) analysis, respectively. Gene3781 and gene3780 from strain USTB-Y showed 100% identity with dpeH and mpeH from Microbacterium sp. PAE-1. But no phthalate catabolic gene (pht) cluster was found in the genome of strain USTB-Y. The results in the present study are valuable for obtaining a more holistic understanding on diverse genetic mechanisms of PAEs biodegrading Microbacterium sp. strains.
Collapse
Affiliation(s)
- Zhenzhen Zhao
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Chao Liu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Qianqian Xu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Shahbaz Ahmad
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Haiyang Zhang
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Yu Pang
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Abudumukeyiti Aikemu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Yang Liu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Hai Yan
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
| |
Collapse
|
13
|
Liu H, Dai L, Yao J, Mei Y, Hrynsphan D, Tatsiana S, Chen J. Efficient biotransformation of sulfide in anaerobic sequencing batch reactor by composite microbial agent: performance optimization and microbial community analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:48718-48727. [PMID: 33913111 DOI: 10.1007/s11356-021-12717-z] [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: 10/18/2020] [Accepted: 01/26/2021] [Indexed: 06/12/2023]
Abstract
Sulfur-containing wastewater is very common as an industrial waste, yet a high-efficiency composite microbial agent for sulfur-containing wastewater treatment is still lacking. In this work, three novel and efficient desulfurizing bacteria were isolated from the sewage treatment tank of Zhejiang Satellite Energy Co., Ltd. They were identified as Brucella melitensis (S1), Ochrobactrum oryzae (S8), and Achromobacter xylosoxidans (S9). These three strains of bacteria were responsible for the oxidative metabolism of sodium sulfide via a similar polythionate pathway, which could be expressed as follows: S2-→S2O32-/S0→SO32-→SO42-. Activated carbon, wheat bran, and diatomite at 1:1:1 ratio are used as carriers to construct a composite microbial agent containing the three bacteria. The desulfurization efficiency of 95% was predicted by response surface methodology under the following optimum conditions: the dosage of the inoculum was 3 g/L, pH 7.86, and temperature of 39 °C. Additionally, the impact resistance was studied in the anaerobic sequencing batch reactor. The removal capacity of microbial agent reached 98%. High-throughput analysis showed that composite microbial agent increased bacterial evenness and diversity, and the relative abundance of Brucellaceae increased from 5.04 to 8.79% in the reactor. In the process of industrial wastewater transformation, the transformation rate of sulfide by composite microbial agent was maintained between 70 and 81%. The composite microbial agent had potential for the treatment of sulfur-containing wastewater.
Collapse
Affiliation(s)
- Huan Liu
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Luyao Dai
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, People's Republic of China
| | - Jiachao Yao
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 30021, People's Republic of China
| | - Yu Mei
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 30021, People's Republic of China
| | - Dzmitry Hrynsphan
- Research Institute of Physical and Chemical Problems, Blearusian State University, 220030, Minsk, Belarus
| | - Savitskaya Tatsiana
- Research Institute of Physical and Chemical Problems, Blearusian State University, 220030, Minsk, Belarus
| | - Jun Chen
- College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 30021, People's Republic of China.
| |
Collapse
|
14
|
Lu M, Jiang W, Gao Q, Zhang M, Hong Q. Degradation of dibutyl phthalate (DBP) by a bacterial consortium and characterization of two novel esterases capable of hydrolyzing PAEs sequentially. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 195:110517. [PMID: 32220793 DOI: 10.1016/j.ecoenv.2020.110517] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 03/15/2020] [Accepted: 03/17/2020] [Indexed: 06/10/2023]
Abstract
Phthalate esters (PAEs), a class of toxic anthropogenic compounds, have been predominantly used as additives or plasticizers, and great concern and interests have been raised regarding its environmental behavior and degradation mechanism. In the present study, a bacterial consortium consisting of Microbacterium sp. PAE-1 and Pandoraea sp. PAE-2 was isolated by the enrichment method, which could degrade dibutyl phthalate (DBP) completely by biochemical cooperation. DBP was converted to phthalic acid (PA) via monobutyl phthalate (MBP) by two sequential hydrolysis steps in strain PAE-1, and then PA was further degraded by strain PAE-2. Strain PAE-1 could hydrolyze many dialkyl Phthalate esters (PAEs) including dimethyl, diethyl, dibutyl, dipentyl, benzyl butyl, dihexyl, di-(2-ethyhexyl) and their corresponding monoalkyl PAEs. Two esterase genes named dpeH and mpeH, located in the same transcription unit, were cloned from strain PAE-1 by the shotgun method and heterologously expressed in Escherichia. coli (DE3). The Km and kcat values of DpeH for DBP were 9.60 ± 0.97 μM and (2.72 ± 0.06) × 106 s-1, while those of MpeH for MBP were 18.61 ± 2.00 μM and (5.83 ± 1.00) × 105 s-1, respectively. DpeH could only hydrolyze dialkyl PAEs to the corresponding monoalkyl PAEs, which were then hydrolyzed to PA by MpeH. DpeH shares the highest similarity (53%) with an alpha/beta hydrolase from Microbacterium sp. MED-G48 and MpeH shows only 25% identity with a secreted lipase from Trichophyton benhamiae CBS 112371, indicating that DpeH and MpeH are two novel hydrolases against PAEs.
Collapse
Affiliation(s)
- Meiyu Lu
- Key Lab of Microbiological Agricultural Environment, Ministry of Agriculture, College of Life Science, Nanjing Agriculture University, Nanjing, 210095, People's Republic of China
| | - Wankui Jiang
- Key Lab of Microbiological Agricultural Environment, Ministry of Agriculture, College of Life Science, Nanjing Agriculture University, Nanjing, 210095, People's Republic of China
| | - Qinqin Gao
- Key Lab of Microbiological Agricultural Environment, Ministry of Agriculture, College of Life Science, Nanjing Agriculture University, Nanjing, 210095, People's Republic of China
| | - Mingliang Zhang
- Key Lab of Microbiological Agricultural Environment, Ministry of Agriculture, College of Life Science, Nanjing Agriculture University, Nanjing, 210095, People's Republic of China
| | - Qing Hong
- Key Lab of Microbiological Agricultural Environment, Ministry of Agriculture, College of Life Science, Nanjing Agriculture University, Nanjing, 210095, People's Republic of China.
| |
Collapse
|
15
|
Xiang W, Gong Q, Xu J, Li K, Yu F, Chen T, Qin S, Li C, Wang F. Cumulative risk assessment of phthalates in edible vegetable oil consumed by Chinese residents. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2020; 100:1124-1131. [PMID: 31680259 DOI: 10.1002/jsfa.10121] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 10/05/2019] [Accepted: 10/29/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Phthalates have been widely used as plasticizers in various industries and are widely focused on in the international community as a result of their reproductive toxicity. Exposure of Chinese residents to phthalates via edible vegetable oil occurs often. In the present study, gas chromatography-mass spectrometry was used to detect the two main phthalates bis(2-ethylhexyl) phthalate (DEHP) and dibutyl phthalate (DBP) in four major edible vegetable oil sources: an edible oil blend, soybean oil, peanut oil and rapeseed oil (a total of 1016 samples), as collected throughout China. Furthermore, cumulative risk assessment was used to estimate the reproductive health risk to Chinese residents caused by the phthalates that come from edible vegetable oils. RESULTS Both phthalates were detected in four major edible vegetable oil sources. The phthalate with the highest detection rate was DBP (13.48%), followed by DEHP (7.78%). The results of the cumulative risk assessment showed that the hazard indices of these two phthalates in edible vegetable oils were less than 1, except in soybean oil. Nevertheless, the two phthalates had the lowest detection rates in soybean oil, which were 1.94% (DEHP) and 5.16% (DBP). In China, contamination levels of phthalates in the soils where oil crops are cultivated have a great influence on the phthalate concentrations in edible vegetable oils. CONCLUSION It is recommended that Chinese residents who are consuming soybean oil choose well-known brands and regularly change their brand of consumption. The phthalates in edible vegetable oils pose a relatively small reproductive health risk to Chinese residents. © 2019 Society of Chemical Industry.
Collapse
Affiliation(s)
- Wei Xiang
- Crop Research Institute, Hunan Academy of Agricultural Science, Changsha, China
| | - Qin Gong
- Hunan Institute of Food Quality Supervision Inspection and Research, Changsha, China
| | - Jian Xu
- College of Information Science and Technology, Hunan Agricultural University, Changsha, China
| | - Kailong Li
- Hunan Institute of Food Quality Supervision Inspection and Research, Changsha, China
| | - Fengxiang Yu
- Department of Food Science and Technology, Hunan Biological and Electromechanical Polytechnic, Changsha, China
| | - Ting Chen
- Hunan Institute of Food Quality Supervision Inspection and Research, Changsha, China
| | - Si Qin
- College of Food Science and Technology, Hunan Agricultural University, Changsha, China
| | - Can Li
- Hunan Institute of Food Quality Supervision Inspection and Research, Changsha, China
| | - Fangbin Wang
- Hunan Institute of Food Quality Supervision Inspection and Research, Changsha, China
| |
Collapse
|
16
|
Peeters C, De Canck E, Cnockaert M, De Brandt E, Snauwaert C, Verheyde B, Depoorter E, Spilker T, LiPuma JJ, Vandamme P. Comparative Genomics of Pandoraea, a Genus Enriched in Xenobiotic Biodegradation and Metabolism. Front Microbiol 2019; 10:2556. [PMID: 31781066 PMCID: PMC6851202 DOI: 10.3389/fmicb.2019.02556] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 10/23/2019] [Indexed: 01/31/2023] Open
Abstract
Comparative analysis of partial gyrB, recA, and gltB gene sequences of 84 Pandoraea reference strains and field isolates revealed several clusters that included no taxonomic reference strains. The gyrB, recA, and gltB phylogenetic trees were used to select 27 strains for whole-genome sequence analysis and for a comparative genomics study that also included 41 publicly available Pandoraea genome sequences. The phylogenomic analyses included a Genome BLAST Distance Phylogeny approach to calculate pairwise digital DNA–DNA hybridization values and their confidence intervals, average nucleotide identity analyses using the OrthoANIu algorithm, and a whole-genome phylogeny reconstruction based on 107 single-copy core genes using bcgTree. These analyses, along with subsequent chemotaxonomic and traditional phenotypic analyses, revealed the presence of 17 novel Pandoraea species among the strains analyzed, and allowed the identification of several unclassified Pandoraea strains reported in the literature. The genus Pandoraea has an open pan genome that includes many orthogroups in the ‘Xenobiotics biodegradation and metabolism’ KEGG pathway, which likely explains the enrichment of these species in polluted soils and participation in the biodegradation of complex organic substances. We propose to formally classify the 17 novel Pandoraea species as P. anapnoica sp. nov. (type strain LMG 31117T = CCUG 73385T), P. anhela sp. nov. (type strain LMG 31108T = CCUG 73386T), P. aquatica sp. nov. (type strain LMG 31011T = CCUG 73384T), P. bronchicola sp. nov. (type strain LMG 20603T = ATCC BAA-110T), P. capi sp. nov. (type strain LMG 20602T = ATCC BAA-109T), P. captiosa sp. nov. (type strain LMG 31118T = CCUG 73387T), P. cepalis sp. nov. (type strain LMG 31106T = CCUG 39680T), P. commovens sp. nov. (type strain LMG 31010T = CCUG 73378T), P. communis sp. nov. (type strain LMG 31110T = CCUG 73383T), P. eparura sp. nov. (type strain LMG 31012T = CCUG 73380T), P. horticolens sp. nov. (type strain LMG 31112T = CCUG 73379T), P. iniqua sp. nov. (type strain LMG 31009T = CCUG 73377T), P. morbifera sp. nov. (type strain LMG 31116T = CCUG 73389T), P. nosoerga sp. nov. (type strain LMG 31109T = CCUG 73390T), P. pneumonica sp. nov. (type strain LMG 31114T = CCUG 73388T), P. soli sp. nov. (type strain LMG 31014T = CCUG 73382T), and P. terrigena sp. nov. (type strain LMG 31013T = CCUG 73381T).
Collapse
Affiliation(s)
- Charlotte Peeters
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Evelien De Canck
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Margo Cnockaert
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Evie De Brandt
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Cindy Snauwaert
- BCCM/LMG Bacteria Collection, Department of Biochemistry and Microbiology, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Bart Verheyde
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Eliza Depoorter
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Theodore Spilker
- Department of Pediatrics, University of Michigan Medical School, Ann Arbor, MI, United States
| | - John J LiPuma
- Department of Pediatrics, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Peter Vandamme
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Faculty of Sciences, Ghent University, Ghent, Belgium.,BCCM/LMG Bacteria Collection, Department of Biochemistry and Microbiology, Faculty of Sciences, Ghent University, Ghent, Belgium
| |
Collapse
|
17
|
Kong X, Jin D, Tai X, Yu H, Duan G, Yan X, Pan J, Song J, Deng Y. Bioremediation of dibutyl phthalate in a simulated agricultural ecosystem by Gordonia sp. strain QH-11 and the microbial ecological effects in soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 667:691-700. [PMID: 30849609 DOI: 10.1016/j.scitotenv.2019.02.385] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 02/21/2019] [Accepted: 02/24/2019] [Indexed: 06/09/2023]
Abstract
Bioremediation of organic pollutants has been identified as an economically efficient and environmentally friendly method. Here, a pot experiment was conducted to evaluate the bioremediation efficiency of dibutyl phthalate (DBP) by Gordonia phthalatica sp. nov. QH-11 in agricultural soils, along with the effect of this exogenous organism on the native microbial community and ecosystem functions during the bioremediation process. The results showed that inoculation with strain QH-11 accelerated DBP degradation in the soil and decreased DBP accumulation in plants, thereby reducing the health risks associated with vegetables grown in those soils. High-throughput sequencing demonstrated that both DBP contamination and the bioremediation process significantly altered prokaryotic community composition, structure, and network interactions; however, these effects were greatly reduced after 30 d. Dibutyl phthalate affected the prokaryotic community by influencing soil properties rather than directly impacting on microorganisms. In addition, ecosystem functions, like the nitrogen cycle, were significantly altered. Contamination with DBP promoted nitrogen fixation and the denitrification processes while inhibiting nitrification. Bioremediation may mitigate some of the changes to nitrogen cycling, helping to maintain the balance of prokaryotic community function. According to this study, bioremediation through highly efficient degradation bacteria may be a safe and promising method for reducing PAEs contamination in soil-vegetable systems.
Collapse
Affiliation(s)
- Xiao Kong
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Decai Jin
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Xin Tai
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Environmental Science and Engineering, Liaoning Technical University, Fuxin 123000, China
| | - Hao Yu
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Environmental Science and Engineering, Liaoning Technical University, Fuxin 123000, China
| | - Guilan Duan
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiulan Yan
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Jiangang Pan
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Junhua Song
- Institute for the Control of Agrochemicals, China Ministry of Agriculture and Rural Affairs, Beijing 100026, China
| | - Ye Deng
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
18
|
Wu X, Wu X, Shen L, Li J, Yu R, Liu Y, Qiu G, Zeng W. Whole Genome Sequencing and Comparative Genomics Analyses of Pandoraea sp. XY-2, a New Species Capable of Biodegrade Tetracycline. Front Microbiol 2019; 10:33. [PMID: 30761094 PMCID: PMC6361800 DOI: 10.3389/fmicb.2019.00033] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 01/10/2019] [Indexed: 02/06/2023] Open
Abstract
Few bacteria are resistant to tetracycline and can even biodegrade tetracycline in the environment. In this study, we isolated a bacterium Pandoraea sp. XY-2, which could biodegrade 74% tetracycline at pH 7.0 and 30°C within 6 days. Thereafter, we determined the whole genome sequence of Pandoraea sp. XY-2 genome is a single circular chromosome of 5.06 Mb in size. Genomic annotation showed that two AA6 family members-encoding genes and nine glutathione S-transferase (GSTs)-encoding genes could be relevant to tetracycline biodegradation. In addition, the average nucleotide identities (ANI) analysis between the genomes of Pandoraea sp. XY-2 and other Pandoraea spp. revealed that Pandoraea sp. XY-2 belongs to a new species. Moreover, comparative genome analysis of 36 Pandoraea strains identified the pan and specific genes, numerous single nucleotide polymorphisms (SNPs), insertions, and deletion variations (InDels) and different syntenial relationships in the genome of Pandoraea sp. XY-2. Finally, the evolution and the origin analysis of genes related to tetracycline resistance revealed that the six tetA(48) genes and two specificgenes tetG and tetR in Pandoraea sp. XY-2 were acquired by horizontal gene transfer (HGT) events from sources related to Paraburkholderia, Burkholderia, Caballeronia, Salmonella, Vibrio, Proteobacteria, Pseudomonas, Acinetobacter, Flavimaricola, and some unidentified sources. As a new species, Pandoraea sp. XY-2 will be an excellent resource for the bioremediation of tetracycline-contaminated environment.
Collapse
Affiliation(s)
- Xueling Wu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China
- Key Laboratory of Biometallurgy, Ministry of Education, School of Minerals Processing and Bioengineering, Central South University, Changsha, China
| | - Xiaoyan Wu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China
| | - Li Shen
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China
- Key Laboratory of Biometallurgy, Ministry of Education, School of Minerals Processing and Bioengineering, Central South University, Changsha, China
| | - Jiaokun Li
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China
- Key Laboratory of Biometallurgy, Ministry of Education, School of Minerals Processing and Bioengineering, Central South University, Changsha, China
| | - Runlan Yu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China
- Key Laboratory of Biometallurgy, Ministry of Education, School of Minerals Processing and Bioengineering, Central South University, Changsha, China
| | - Yuandong Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China
- Key Laboratory of Biometallurgy, Ministry of Education, School of Minerals Processing and Bioengineering, Central South University, Changsha, China
| | - Guanzhou Qiu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China
- Key Laboratory of Biometallurgy, Ministry of Education, School of Minerals Processing and Bioengineering, Central South University, Changsha, China
| | - Weimin Zeng
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China
- Key Laboratory of Biometallurgy, Ministry of Education, School of Minerals Processing and Bioengineering, Central South University, Changsha, China
| |
Collapse
|
19
|
Mo J, Zhang Z, Wang Z, Yu Z, Li S, Jiang S, Liu H, Ao J. Isolation and identification of a psychrotolerant dimethyl phthalate-degrading bacterium from selected frozen soil of high-latitude areas in China and optimization of its fermentation conditions using response surface methodology. BIOTECHNOL BIOTEC EQ 2019. [DOI: 10.1080/13102818.2019.1696703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Affiliation(s)
- Jixian Mo
- Heilongjiang Key Laboratory of Resistance Gene Engineering and Preservation of Biodiversity in Cold Areas, College of Life Science and Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
| | - Zhihong Zhang
- Laboratory of Rice Processing, Food Processing Institute, Heilongjiang Academy of Agricultural Sciences, Harbin, PR China
| | - Zhigang Wang
- Heilongjiang Key Laboratory of Resistance Gene Engineering and Preservation of Biodiversity in Cold Areas, College of Life Science and Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
| | - Zhidan Yu
- Heilongjiang Key Laboratory of Resistance Gene Engineering and Preservation of Biodiversity in Cold Areas, College of Life Science and Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
| | - Shanshan Li
- Heilongjiang Key Laboratory of Resistance Gene Engineering and Preservation of Biodiversity in Cold Areas, College of Life Science and Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
| | - ShaSha Jiang
- Heilongjiang Key Laboratory of Resistance Gene Engineering and Preservation of Biodiversity in Cold Areas, College of Life Science and Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
| | - Hening Liu
- Heilongjiang Key Laboratory of Resistance Gene Engineering and Preservation of Biodiversity in Cold Areas, College of Life Science and Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
| | - Jia Ao
- Heilongjiang Key Laboratory of Resistance Gene Engineering and Preservation of Biodiversity in Cold Areas, College of Life Science and Agriculture and Forestry, Qiqihar University, Qiqihar, PR China
| |
Collapse
|