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Mehanni MM, Gadow SI, Alshammari FA, Modafer Y, Ghanem KZ, El-Tahtawi NF, El-Homosy RF, Hesham AEL. Antibiotic-resistant bacteria in hospital wastewater treatment plant effluent and the possible consequences of its reuse in agricultural irrigation. Front Microbiol 2023; 14:1141383. [PMID: 37143530 PMCID: PMC10153669 DOI: 10.3389/fmicb.2023.1141383] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 03/20/2023] [Indexed: 05/06/2023] Open
Abstract
Wastewater from hospitals should be monitored precisely and treated properly before discharge and reuse to avoid epidemic and pandemic complications, as it contains hazardous pollutants for the ecosystem. Antibiotic residues in treated hospital wastewater effluents constitute a major environmental concern since they resist various wastewater treatment processes. The emergence and spread of multi-drug-resistant bacteria, that cause public health problems, are therefore always a major concern. The aims and objectives of this study were mainly to characterize the chemical and microbial properties of the hospital effluent of wastewater treatment plant (WWTP) before discharge to the environment. Special attention was paid to the presence of multiple resistant bacteria and the effects of hospital effluent reuse in irrigation on zucchini as an economically important plant. The risk of cell-free DNA carrying antibiotic resistance genes contained in the hospital effluent as a long-lasting hazard had been discussed. In this study, 21 bacterial strains were isolated from the effluent of a hospital WWTP. Isolated bacteria were evaluated for multi-drug resistance ability against 5 antibiotics (Tetracycline, Ampicillin, Amoxicillin, Chloramphenicol, and Erythromycin) at a concentration of 25 ppm. Out of them, three isolates (AH-03, AH-07, and AH-13) were selected because they recorded the highest growth in presence of tested antibiotics. Selected isolates were identified using 16S rRNA gene sequence homology as Staphylococcus haemolyticus (AH-03), Enterococcus faecalis (AH-07), and Escherichia coli (AH-13). Their susceptibility to ascending concentrations of tested antibiotics indicated that they were all susceptible at a concentration above 50 ppm. Results of the greenhouse experiment regarding the effect of hospital WWTP effluent reuse on zucchini plant fresh weights compared to that irrigated with fresh water indicated that the former recorded a limited increase in total fresh weights (6.2 g and 5.3 g/plant, respectively). Our results demonstrated the low impact of the reuse of Hospital WWTP effluent in agriculture irrigation compared to its greater risk in transferring multiple antibiotic bacteria and antibiotic resistance genes to soil bacteria through natural transformation.
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Affiliation(s)
- Magda M. Mehanni
- Department of Botany and Microbiology, Faculty of Science, Minia University, Minya, Egypt
| | - Samir I. Gadow
- Department of Agricultural Microbiology, Agriculture and Biology Research Institute, National Research Centre, Cairo, Egypt
| | - Fahdah Ayed Alshammari
- Department of Biology, Faculty of Science and Arts-RAFHA, Northrn Border University, Arar, Saudi Arabia
| | - Yosra Modafer
- Department of Biology, College of Science, Jazan University, Jazan, Saudi Arabia
| | - Kholoud Z. Ghanem
- Department of Biological Sciences, College of Science and Humanities, Shaqra University, Shaqra, Saudi Arabia
| | - Noha Fathy El-Tahtawi
- Department of Biology, College of Science and Arts, Shaqra University, Shaqra, Saudi Arabia
| | - Rania F. El-Homosy
- Department of Genetics, Faculty of Agriculture, Assiut University, Assiut, Egypt
| | - Abd El-Latif Hesham
- Genetics Department, Faculty of Agriculture, Beni-Suef University, Beni-Suef, Egypt
- *Correspondence: Abd El-Latif Hesham,
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Wang D, Qin L, Liu E, Chai G, Su Z, Shan J, Yang Z, Wang Z, Wang H, Meng H, Zheng X, Li H, Li J, Lin Y. Biodegradation performance and diversity of enriched bacterial consortia capable of degrading high-molecular-weight polycyclic aromatic hydrocarbons. ENVIRONMENTAL TECHNOLOGY 2022; 43:4200-4211. [PMID: 34148513 DOI: 10.1080/09593330.2021.1946163] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 06/13/2021] [Indexed: 06/12/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are key organic pollutants in the environment that pose threats to the ecosystem and human health. The degradation of high molecular weight (HMW) PAHs by enriched bacterial consortia has been previously studied, while the involved metabolisms and microbial communities are still unclear and warrant further investigations. In this study, five bacterial consortia capable of utilizing different PAHs (naphthalene, anthracene, and pyrene) as the sole carbon and energy sources were enriched from PAH-contaminated soil samples. Among the five consortia, consortium TC exhibited the highest pyrene degradation efficiency (91%) after 19 d of incubation. The degradation efficiency was further enhanced up to 99% by supplementing yeast extract. Besides, consortium TC showed tolerances to high concentrations of pyrene (up to 1000 mg/L) and different heavy metal stresses (including Zn2+, Cd2+, and Pb2+). The dominant genus in consortium TC, GS, and PL showing relatively higher degradation efficiency for anthracene and pyrene was Pseudomonas, whereas consortium PG and GD were predominated by genus Achromobacter and class Enterobacteriaceae, respectively. Consortium TC, as a highly efficient HMW PAH-degrading consortium, could be applied for synergistic biodegradation of HMW PAHs and in situ bioremediation of the sites contaminated with both PAHs and heavy metals.
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Affiliation(s)
- Dongqi Wang
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, People's Republic of China
- Shaanxi Key Laboratory of Water Resources and Environment, Xi'an University of Technology, Xi'an, People's Republic of China
- Department of Municipal and Environmental Engineering, Xi'an University of Technology, Xi'an, People's Republic of China
| | - Lu Qin
- Department of Municipal and Environmental Engineering, Xi'an University of Technology, Xi'an, People's Republic of China
| | - Enyu Liu
- Department of Municipal and Environmental Engineering, Xi'an University of Technology, Xi'an, People's Republic of China
| | - Guodong Chai
- Department of Municipal and Environmental Engineering, Xi'an University of Technology, Xi'an, People's Republic of China
| | - Zhenduo Su
- Department of Municipal and Environmental Engineering, Xi'an University of Technology, Xi'an, People's Republic of China
| | - Jiaqi Shan
- Department of Municipal and Environmental Engineering, Xi'an University of Technology, Xi'an, People's Republic of China
| | - Zhangjie Yang
- Department of Municipal and Environmental Engineering, Xi'an University of Technology, Xi'an, People's Republic of China
| | - Zhe Wang
- Department of Municipal and Environmental Engineering, Xi'an University of Technology, Xi'an, People's Republic of China
| | - Hui Wang
- Department of Municipal and Environmental Engineering, Xi'an University of Technology, Xi'an, People's Republic of China
| | - Haiyu Meng
- Department of Municipal and Environmental Engineering, Xi'an University of Technology, Xi'an, People's Republic of China
| | - Xing Zheng
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, People's Republic of China
- Department of Municipal and Environmental Engineering, Xi'an University of Technology, Xi'an, People's Republic of China
| | - Huaien Li
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, People's Republic of China
- Department of Municipal and Environmental Engineering, Xi'an University of Technology, Xi'an, People's Republic of China
| | - Jiake Li
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, People's Republic of China
- Department of Municipal and Environmental Engineering, Xi'an University of Technology, Xi'an, People's Republic of China
| | - Yishan Lin
- State Key Laboratory of Pollution Control & Resource Reuse, School of the Environment, Nanjing University, Nanjing, People's Republic of China
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Science, Xi'an, People's Republic of China
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Tomar RS, Rai-Kalal P, Jajoo A. Impact of polycyclic aromatic hydrocarbons on photosynthetic and biochemical functions and its bioremediation by Chlorella vulgaris. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Fan W, Jin J, Zhang Z, Han L, Li K, Wang C. Degradation of phenanthrene by consortium 5H under hypersaline conditions. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 308:119730. [PMID: 35809715 DOI: 10.1016/j.envpol.2022.119730] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 07/02/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
PAHs have been widely detected to accumulate in saline and hypersaline environments. Moderately halophilic microbes are considered the most suitable player for the elimination of PAHs in such environments. In this study, consortium 5H was enriched under 5% salinity and completely degraded phenanthrene in 5 days. By high-throughput sequencing, consortium 5H was identified as being mainly composed of Methylophaga, Marinobacter and Thalassospira. Combined with the investigation of intermediates and enzymatic activities, the degradation pathway of consortium 5H on phenanthrene was proposed. Consortium 5H was identified as having the ability to tolerate a wide range of salinities (1%-10%) and initial PAH concentrations (50 mg/L to 400 mg/L). It was also able to function under neutral to weak alkaline conditions (pH from 6 to 9) and the phytotoxicity of the produced intermediates showed no significant difference with distilled water. Furthermore, the metagenome of consortium 5H was measured and analyzed, which showed a great abundance of catabolic genes contained in consortium 5H. This study expanded the knowledge of PAH-degradation under hypersaline environments and consortium 5H was proposed to have good potential for the elimination of PAH pollution in saline/hypersaline environments.
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Affiliation(s)
- Weihua Fan
- Miami College, Henan University, Kaifeng, 475000, Henan, China.
| | - Jiaqi Jin
- Miami College, Henan University, Kaifeng, 475000, Henan, China.
| | - Zuotao Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, China.
| | - Lu Han
- Miami College, Henan University, Kaifeng, 475000, Henan, China.
| | - Keyuan Li
- Miami College, Henan University, Kaifeng, 475000, Henan, China.
| | - Chongyang Wang
- Miami College, Henan University, Kaifeng, 475000, Henan, China.
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Construction and Degradation Performance Study of Polycyclic Aromatic Hydrocarbons (PAHs) Degrading Bacterium Consortium. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12052354] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
PAHs are widely distributed in the environment and pose a serious threat to ecological security and human health. The P&A (Pseudomonas aeruginosa and Alcaligenes faecalis) bacterium consortium obtained in this study comes from oily sludge and is reused for the degradation of PAHs mixture in oily sludge. Few articles pay attention to the PAHs mixture in oily sludge and reuse the bacterium consortium for its degradation. The PAHs solution degradation efficient of P&A bacterial consortium under different environmental conditions, bioaugmentations, and exogenous stimulations were studied by ultraviolet visible spectrophotometer and gas chromatography–mass spectrometry. The result shows that, after 8 days of degradation under 35 °C, pH 7, with 5% (volume percent) of the inoculation amount, the degradation rate of NAP, PHE, and PYR solution could higher than 90%, 80%, and 70%, respectively. The additional crude oil could further improve the NAP, PHE, and PYR degradation efficiency. The minimum inhibitory concentration of Cu2+, Zn2+, and Pb2+ to bacterium were 2.002, 17.388, and 9.435 mM, respectively. The addition of surfactants had negative or limited positive effect on the PAHs degradation rate. Furthermore, the average degradation rates of NAP, PHE, and PYR, in oily sludge of local petroleum polluted area by P&A bacterial consortium, could all reach above 80%. Based on gas chromatography–mass spectrometry test results before and after incubation, P&A bacterial consortium also provides more opportunities for other organic compounds’ degradation.
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Danial AW, Hamdy SM, Alrumman SA, Gad El-Rab SMF, Shoreit AAM, Hesham AEL. Bioplastic Production by Bacillus wiedmannii AS-02 OK576278 Using Different Agricultural Wastes. Microorganisms 2021; 9:microorganisms9112395. [PMID: 34835520 PMCID: PMC8625221 DOI: 10.3390/microorganisms9112395] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 11/17/2021] [Accepted: 11/18/2021] [Indexed: 11/25/2022] Open
Abstract
Polyhydroxybutyrates (PHBs) are macromolecules synthesized by bacteria. Because of their fast degradability under natural environmental conditions, PHBs were selected as alternatives for the production of biodegradable plastics. Sixteen PHB-accumulating strains were selected and compared for their ability to accumulate PHB granules inside their cells. Isolate AS-02 was isolated from cattle manure and identified as Bacillus wiedmannii AS-02 OK576278 by means of 16S rRNA analysis. It was found to be the best producer. The optimum pH, temperature, and incubation period for the best PHB production by the isolate were 7, 35 °C, and 72 h respectively. PHB production was the best with peptone and glucose as nitrogen and carbon sources at a C/N ratio of (2:1). The strain was able to accumulate 423, 390, 249, 158, and 144 mg/L PHB when pretreated orange, mango, banana, onion peels, and rice straw were used as carbon sources, respectively. The extracted polymer was characterized by Fourier transform infrared (FTIR), nuclear magnetic resonance (NMR), and GC-MS spectroscopy, which confirmed the structure of the polymer as PHB. The isolate B. wiedmannii AS-02 OK576278 can be considered an excellent candidate for industrial production of PHB from agricultural wastes.
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Affiliation(s)
- Amal W. Danial
- Botany and Microbiology Department, Faculty of Science, Assiut University, Assiut 71516, Egypt; (A.W.D.); (S.M.F.G.E.-R.)
| | | | - Sulaiman A. Alrumman
- Biology Department, College of Science, King Khalid University, Abha 61413, Saudi Arabia;
| | - Sanaa M. F. Gad El-Rab
- Botany and Microbiology Department, Faculty of Science, Assiut University, Assiut 71516, Egypt; (A.W.D.); (S.M.F.G.E.-R.)
| | - Ahmed A. M. Shoreit
- Botany and Microbiology Department, Faculty of Science, Assiut University, Assiut 71516, Egypt; (A.W.D.); (S.M.F.G.E.-R.)
- Correspondence: (A.A.M.S.); (A.E.-L.H.)
| | - Abd El-Latif Hesham
- Genetics Department, Faculty of Agriculture, Beni-Suef University, Beni Suef 62521, Egypt
- Correspondence: (A.A.M.S.); (A.E.-L.H.)
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Remediation of Petroleum-Contaminated Soils with Microbial and Microbial Combined Methods: Advances, Mechanisms, and Challenges. SUSTAINABILITY 2021. [DOI: 10.3390/su13169267] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The petroleum industry’s development has been supported by the demand for petroleum and its by-products. During extraction and transportation, however, oil will leak into the soil, destroying the structure and quality of the soil and even harming the health of plants and humans. Scientists are researching and developing remediation techniques to repair and re-control the afflicted environment due to the health risks and social implications of petroleum hydrocarbon contamination. Remediation of soil contamination produced by petroleum hydrocarbons, on the other hand, is a difficult and time-consuming job. Microbial remediation is a focus for soil remediation because of its convenience of use, lack of secondary contamination, and low cost. This review lists the types and capacities of microorganisms that have been investigated to degrade petroleum hydrocarbons. However, investigations have revealed that a single microbial remediation faces difficulties, such as inconsistent remediation effects and substantial environmental consequences. It is necessary to understand the composition and source of pollutants, the metabolic genes and pathways of microbial degradation of petroleum pollutants, and the internal and external aspects that influence remediation in order to select the optimal remediation treatment strategy. This review compares the degradation abilities of microbial–physical, chemical, and other combination remediation methods, and highlights the degradation capabilities and processes of the greatest microbe-biochar, microbe–nutrition, and microbe–plant technologies. This helps in evaluating and forecasting the chemical behavior of contaminants with both short- and long-term consequences. Although there are integrated remediation strategies for the removal of petroleum hydrocarbons, practical remediation remains difficult. The sources and quantities of petroleum pollutants, as well as their impacts on soil, plants, and humans, are discussed in this article. Following that, the focus shifted to the microbiological technique of degrading petroleum pollutants and the mechanism of the combined microbial method. Finally, the limitations of existing integrated microbiological techniques are highlighted.
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Zhao Z, Xia L, Qin Z, Cao J, Omer Mohammed AA, Toland H. The environmental fate of phenanthrene in paddy field system and microbial responses in rhizosphere interface: Effect of water-saving patterns. CHEMOSPHERE 2021; 269:128774. [PMID: 33143890 DOI: 10.1016/j.chemosphere.2020.128774] [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: 07/14/2020] [Revised: 10/24/2020] [Accepted: 10/26/2020] [Indexed: 06/11/2023]
Abstract
The effects of water-saving patterns (Semi-dry water-saving, B; Shallow-wet control irrigation, Q; Traditional flooding irrigation, C; and Moistening irrigation, S) on the environmental fate of phenanthrene (Phe) and microbial responses in rhizosphere were investigated in paddy field system. Results showed the rice grain in Q treatment was more high production and safety with less Phe residue (up to 18%-49%) than other treatments, and the residual Phe in soil declined in the order: C (14.17%) > S (13.36%) > B (5.86%)>Q (2.70%), which proves the existence of optimal water conditions for PAHs degradation and rhizosphere effect during rice cultivation. Laccase (LAC) and dioxygenase (C23O) played important roles in Phe degradation, which were significantly positively correlated with Phe dissipation rate in soil (p < 0.01). Moreover, their activities in Q treatment, rhizosphere and subsoil were higher than those in C treatment, non-rhizoshere and upper layer soil. The introduction of Phe and rice into paddy field system decreased the microorganism diversity, and promoted the activities of enzymes and some PAHs degrading bacteria, such as Delftia, Serratia, Enterobacter, Pseudomonas, norank_f_Rhodospirillaceae, norank_f_Nitrosomonadaceae and so on. According to the cluster analysis, redundancy analysis and correlation analysis between bacterial community composition and environmental factors, water-saving patterns markedly impacted the relative abundance and bacterial community structure by the regulating and controlling on environmental conditions of paddy field. The dioxygenase activity, laccase activity, oxidation-reduction potential and conductivity were the main affecting factors on Phe dissipation during growth stage of rice.
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Affiliation(s)
- Zhenhua Zhao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, PR China; Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI, 48824, USA.
| | - Liling Xia
- School of Computer & Software, Nanjing Institute of Industry Technology, Nanjing, 210016, PR China.
| | - Zhirui Qin
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Jingjing Cao
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, PR China
| | - Abduelrahman Adam Omer Mohammed
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, PR China; Water Harvesting Center, Nyala University, Nyala, Sudan
| | - Harry Toland
- Department of Geography and Earth Sciences, Aberystwyth University, Penglais, Aberystwyth, Ceredigion, SY23 3DB, UK
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Mawad AMM, Hesham AEL, Yousef NMH, Shoreit AAM, Gathergood N, Gupta VK. Role of Bacterial-Fungal Consortium for Enhancement in the Degradation of Industrial Dyes. Curr Genomics 2020; 21:283-294. [PMID: 33071621 PMCID: PMC7521038 DOI: 10.2174/1389202921999200505082901] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 03/31/2020] [Accepted: 04/02/2020] [Indexed: 11/22/2022] Open
Abstract
Background The presence of anthraquinone (Disperse blue 64) and azodyes (Acid yellow 17) in a waterbody are considered among the most dangerous pollutants. Methods In this study, two different isolated microbes, bacterium and fungus, were individually and as a co-culture applied for the degradation of Disperse Blue 64 (DB 64) and Acid Yellow 17 (AY 17) dyes. The isolates were genetically identified based upon 16S (for bacteria) and ITS/5.8S (for fungus) rRNA genes sequences as Pseudomoans aeruginosa and Aspergillus flavus, respectively. Results The fungal/bacterial consortium exhibited a higher percentage of dyes degradation than the individual strains, even at a high concentration of 300 mg/L. Azoreductase could be identified as the main catabolic enzyme and the consortium could induce azoreductase enzyme in the presence of both dyes. However, the specific substrate which achieved the highest azoreductase specific activity was Methyl red (MR) (3.5 U/mg protein). The tentatively proposed metabolites that were detected by HPLC/MS suggested that the reduction process catalyzed the degradation of dyes. The metabolites produced by the action consortium on two dyes were safe on Vicia faba and Triticum vulgaris germination and health of seedlings. Toxicity of the dyes and their degradation products on the plant was different according to the type and chemistry of these compounds as well as the type of irrigated seeds. Conclusion We submit that the effective microbial degradation of DB64 and AY17 dyes will lead to safer metabolic products.
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Affiliation(s)
- Asmaa M M Mawad
- 1Biology Department, College of Science, Taibah University, Al-Madinah Al-Munawwarah, KSA; 2Botany and Microbiology Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt; 3Genetics Department, Faculty of Agriculture, Beni-Suef University, Beni-Suef 62511, Egypt; 4Department of Chemistry and Biotechnology, ERA Chair of Green Chemistry, Tallinn University of Technology, 12618Tallinn, Estonia; 5School of Chemistry, University of Lincoln, Lincoln, Lincolnshire, LN6 7DL, UK; 6AgroBioSciences (AgBS) and Chemical & Biochemical Sciences (CBS) Department, University Mohammed VI Polytechnic (UM6P), Benguerir, Morocco
| | - Abd El-Latif Hesham
- 1Biology Department, College of Science, Taibah University, Al-Madinah Al-Munawwarah, KSA; 2Botany and Microbiology Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt; 3Genetics Department, Faculty of Agriculture, Beni-Suef University, Beni-Suef 62511, Egypt; 4Department of Chemistry and Biotechnology, ERA Chair of Green Chemistry, Tallinn University of Technology, 12618Tallinn, Estonia; 5School of Chemistry, University of Lincoln, Lincoln, Lincolnshire, LN6 7DL, UK; 6AgroBioSciences (AgBS) and Chemical & Biochemical Sciences (CBS) Department, University Mohammed VI Polytechnic (UM6P), Benguerir, Morocco
| | - Naiema M H Yousef
- 1Biology Department, College of Science, Taibah University, Al-Madinah Al-Munawwarah, KSA; 2Botany and Microbiology Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt; 3Genetics Department, Faculty of Agriculture, Beni-Suef University, Beni-Suef 62511, Egypt; 4Department of Chemistry and Biotechnology, ERA Chair of Green Chemistry, Tallinn University of Technology, 12618Tallinn, Estonia; 5School of Chemistry, University of Lincoln, Lincoln, Lincolnshire, LN6 7DL, UK; 6AgroBioSciences (AgBS) and Chemical & Biochemical Sciences (CBS) Department, University Mohammed VI Polytechnic (UM6P), Benguerir, Morocco
| | - Ahmed A M Shoreit
- 1Biology Department, College of Science, Taibah University, Al-Madinah Al-Munawwarah, KSA; 2Botany and Microbiology Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt; 3Genetics Department, Faculty of Agriculture, Beni-Suef University, Beni-Suef 62511, Egypt; 4Department of Chemistry and Biotechnology, ERA Chair of Green Chemistry, Tallinn University of Technology, 12618Tallinn, Estonia; 5School of Chemistry, University of Lincoln, Lincoln, Lincolnshire, LN6 7DL, UK; 6AgroBioSciences (AgBS) and Chemical & Biochemical Sciences (CBS) Department, University Mohammed VI Polytechnic (UM6P), Benguerir, Morocco
| | - Nicholas Gathergood
- 1Biology Department, College of Science, Taibah University, Al-Madinah Al-Munawwarah, KSA; 2Botany and Microbiology Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt; 3Genetics Department, Faculty of Agriculture, Beni-Suef University, Beni-Suef 62511, Egypt; 4Department of Chemistry and Biotechnology, ERA Chair of Green Chemistry, Tallinn University of Technology, 12618Tallinn, Estonia; 5School of Chemistry, University of Lincoln, Lincoln, Lincolnshire, LN6 7DL, UK; 6AgroBioSciences (AgBS) and Chemical & Biochemical Sciences (CBS) Department, University Mohammed VI Polytechnic (UM6P), Benguerir, Morocco
| | - Vijai Kumar Gupta
- 1Biology Department, College of Science, Taibah University, Al-Madinah Al-Munawwarah, KSA; 2Botany and Microbiology Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt; 3Genetics Department, Faculty of Agriculture, Beni-Suef University, Beni-Suef 62511, Egypt; 4Department of Chemistry and Biotechnology, ERA Chair of Green Chemistry, Tallinn University of Technology, 12618Tallinn, Estonia; 5School of Chemistry, University of Lincoln, Lincoln, Lincolnshire, LN6 7DL, UK; 6AgroBioSciences (AgBS) and Chemical & Biochemical Sciences (CBS) Department, University Mohammed VI Polytechnic (UM6P), Benguerir, Morocco
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Mawad AMM, Abdel-Mageed WS, Hesham AEL. Quantification of Naphthalene Dioxygenase ( NahAC) and Catechol Dioxygenase ( C23O) Catabolic Genes Produced by Phenanthrene-Degrading Pseudomonas fluorescens AH-40. Curr Genomics 2020; 21:111-118. [PMID: 32655305 PMCID: PMC7324874 DOI: 10.2174/1389202921666200224101742] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 01/17/2020] [Accepted: 02/04/2020] [Indexed: 01/09/2023] Open
Abstract
Background Petroleum polycyclic aromatic hydrocarbons (PAHs) are known to be toxic and carcinogenic for humans and their contamination of soils and water is of great environmental concern. Identification of the key microorganisms that play a role in pollutant degradation processes is relevant to the development of optimal in situ bioremediation strategies. Objective Detection of the ability of Pseudomonas fluorescens AH-40 to consume phenanthrene as a sole carbon source and determining the variation in the concentration of both nahAC and C23O catabolic genes during 15 days of the incubation period. Methods In the current study, a bacterial strain AH-40 was isolated from crude oil polluted soil by enrichment technique in mineral basal salts (MBS) medium supplemented with phenanthrene (PAH) as a sole carbon and energy source. The isolated strain was genetically identified based on 16S rDNA sequence analysis. The degradation of PAHs by this strain was confirmed by HPLC analysis. The detection and quantification of naphthalene dioxygenase (nahAc) and catechol 2,3-dioxygenase (C23O) genes, which play a critical role during the mineralization of PAHs in the liquid bacterial culture were achieved by quantitative PCR. Results Strain AH-40 was identified as pseudomonas fluorescens. It degraded 97% of 150 mg phenanthrene L-1 within 15 days, which is faster than previously reported pure cultures. The copy numbers of chromosomal encoding catabolic genes nahAc and C23O increased during the process of phenanthrene degradation. Conclusion nahAc and C23O genes are the main marker genes for phenanthrene degradation by strain AH-40. P. fluorescence AH-40 could be recommended for bioremediation of phenanthrene contaminated site.
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Affiliation(s)
- Asmaa M M Mawad
- 1Biology Department, College of Science, Taibah University, Al-Madinah Al-Munawwarah, KSA; 2Genetics Department, Faculty of Agriculture, Beni-Suef University, Beni-Suef 62511, Egypt; 3Botany and Microbiology Department, Faculty of Science, Assiut University, Assiut, 71516, Egypt
| | - Wael S Abdel-Mageed
- 1Biology Department, College of Science, Taibah University, Al-Madinah Al-Munawwarah, KSA; 2Genetics Department, Faculty of Agriculture, Beni-Suef University, Beni-Suef 62511, Egypt; 3Botany and Microbiology Department, Faculty of Science, Assiut University, Assiut, 71516, Egypt
| | - Abd E-L Hesham
- 1Biology Department, College of Science, Taibah University, Al-Madinah Al-Munawwarah, KSA; 2Genetics Department, Faculty of Agriculture, Beni-Suef University, Beni-Suef 62511, Egypt; 3Botany and Microbiology Department, Faculty of Science, Assiut University, Assiut, 71516, Egypt
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Xu X, Liu W, Wang W, Tian S, Jiang P, Qi Q, Li F, Li H, Wang Q, Li H, Yu H. Potential biodegradation of phenanthrene by isolated halotolerant bacterial strains from petroleum oil polluted soil in Yellow River Delta. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 664:1030-1038. [PMID: 30901777 DOI: 10.1016/j.scitotenv.2019.02.080] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 02/05/2019] [Accepted: 02/05/2019] [Indexed: 06/09/2023]
Abstract
The Yellow River Delta (YRD), being close to Shengli Oilfield, is at high risk for petroleum oil pollution. The aim of this study was to isolate halotolerant phenanthrene (PHE) degrading bacteria for dealing with this contaminates in salinity environment. Two bacterial strains assigned as FM6-1 and FM8-1 were successfully screened from oil contaminated soil in the YRD. Morphological and molecular analysis suggested that strains FM6-1 and FM8-1 were belonging to Delftia sp. and Achromobacter sp., respectively. Bacterial growth of both strains was not dependent on NaCl, however, grew well under extensive NaCl concentration. The optimum NaCl concentration for bacterial production of strain FM8-1 was 4% (m/v), whereas for strain FM6-1, growth was not affected within 2.5% NaCl. Both strains could use the tested aromatic hydrocarbons (naphthalene, phenanthrene, fluoranthene and pyrene) and aliphatic hydrocarbons (C12, C16, C20 and C32) as sole carbon source. The optimized biodegradation conditions for strain FM6-1 were pH 7, 28 °C and 2% NaCl, for strain FM8-1 were pH 8, 28 °C and 2.5% NaCl. The highest biodegradation rate of strains FM6-1 and FM8-1 was found at 150 mg/L PHE and 200 mg/L, respectively. In addition, strainsFM8-1 showed a superior biodegradation ability to strain FM6-1 at each optimized condition. The PHE biodegradation process by both strains well fitted to first-order kinetic models and the k1 values were calculated to be 0.1974 and 0.1070 per day. Strain FM6-1 metabolized PHE via a "phthalic acid" route, while strain FM8-1 metabolized PHE through the "naphthalene" route. This project not only obtained two halotolerant petroleum hydrocarbon degraders but also provided a promising remediation approach for solving oil pollutants in salinity environments.
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Affiliation(s)
- Xingjian Xu
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; Hinggan League Academy of Agriculture and Animal Husbandry, Ulanhot, Inner Mongolia 137400, China.
| | - Wenming Liu
- Hinggan League Academy of Agriculture and Animal Husbandry, Ulanhot, Inner Mongolia 137400, China
| | - Wei Wang
- Hinggan League Academy of Agriculture and Animal Husbandry, Ulanhot, Inner Mongolia 137400, China
| | - Shuhua Tian
- Hinggan League Academy of Agriculture and Animal Husbandry, Ulanhot, Inner Mongolia 137400, China
| | - Pan Jiang
- Hinggan League Academy of Agriculture and Animal Husbandry, Ulanhot, Inner Mongolia 137400, China
| | - Qige Qi
- Hinggan League Academy of Agriculture and Animal Husbandry, Ulanhot, Inner Mongolia 137400, China
| | - Fengjiao Li
- Hinggan League Academy of Agriculture and Animal Husbandry, Ulanhot, Inner Mongolia 137400, China
| | - Haiyan Li
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; Changchun University of Science and Technology, Changchun 130022, China
| | - Quanying Wang
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Huai Li
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Hongwen Yu
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; Changchun University of Science and Technology, Changchun 130022, China
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12
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Azoreductase kinetics and gene expression in the synthetic dyes-degrading Pseudomonas. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.ejbas.2017.07.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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13
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Ghosh A, Bhadury P. Exploring biogeographic patterns of bacterioplankton communities across global estuaries. Microbiologyopen 2018; 8:e00741. [PMID: 30303297 PMCID: PMC6528645 DOI: 10.1002/mbo3.741] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 08/29/2018] [Accepted: 08/31/2018] [Indexed: 11/16/2022] Open
Abstract
Estuaries provide an ideal niche to study structure and function of bacterioplankton communities owing to the presence of a multitude of environmental stressors. Bacterioplankton community structures from nine global estuaries were compared to understand their broad‐scale biogeographic patterns. Bacterioplankton community structure from four estuaries of Sundarbans, namely Mooriganga, Thakuran, Matla, and Harinbhanga, was elucidated using Illumina sequencing. Bacterioplankton communities from these estuaries were compared against available bacterioplankton sequence data from Columbia, Delaware, Jiulong, Pearl, and Hangzhou estuaries. All nine estuaries were dominated by Proteobacteria. Other abundant phyla included Bacteroidetes, Firmicutes, Acidobacteria, Actinobacteria, Cyanobacteria, Planctomycetes, and Verrucomicrobia. The abundant bacterial phyla showed a ubiquitous presence across the estuaries. At class level, the overwhelming abundance of Gammaproteobacteria in the estuaries of Sundarbans and Columbia estuary clearly stood out amidst high abundance of Alphaproteobacteria observed in the other estuaries. Abundant bacterial families including Rhodobacteriaceae, Shingomonadaceae, Acidobacteriaceae, Vibrionaceae, and Xanthomondaceae also showed ubiquitous presence in the studied estuaries. However, rare taxa including Chloroflexi, Tenericutes, Nitrospirae, and Deinococcus‐Thermus showed clear site‐specific distribution patterns. Such distribution patterns were also reinstated by nMDS ordination plots. Such clustering patterns could hint toward the potential role of environmental parameters and substrate specificity which could result in distinct bacterioplankton communities at specific sites. The ubiquitous presence of abundant bacterioplankton groups along with their strong correlation with surface water temperature and dissolved nutrient concentrations indicates the role of such environmental parameters in shaping bacterioplankton community structure in estuaries. Overall, studies on biogeographic patters of bacterioplankton communities can provide interesting insights into ecosystem functioning and health of global estuaries.
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Affiliation(s)
- Anwesha Ghosh
- Integrative Taxonomy and Microbial Ecology Research Group, Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, West Bengal, India
| | - Punyasloke Bhadury
- Integrative Taxonomy and Microbial Ecology Research Group, Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, West Bengal, India
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Wang C, Huang Y, Zhang Z, Wang H. Salinity effect on the metabolic pathway and microbial function in phenanthrene degradation by a halophilic consortium. AMB Express 2018; 8:67. [PMID: 29696463 PMCID: PMC5918149 DOI: 10.1186/s13568-018-0594-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Accepted: 04/13/2018] [Indexed: 11/15/2022] Open
Abstract
With the close relationship between saline environments and industry, polycyclic aromatic hydrocarbons (PAHs) accumulate in saline/hypersaline environments. Therefore, PAHs degradation by halotolerant/halophilic bacteria has received increasing attention. In this study, the metabolic pathway of phenanthrene degradation by halophilic consortium CY-1 was first studied which showed a single upstream pathway initiated by dioxygenation at the C1 and C2 positions, and at several downstream pathways, including the catechol pathway, gentisic acid pathway and protocatechuic acid pathway. The effects of salinity on the community structure and expression of catabolic genes were further studied by a combination of high-throughput sequencing, catabolic gene clone library and real-time PCR. Pure cultures were also isolated from consortium CY-1 to investigate the contribution made by different microbes in the PAH-degrading process. Marinobacter is the dominant genus that contributed to the upstream degradation of phenanthrene especially in high salt content. Genus Halomonas made a great contribution in transforming intermediates in the subsequent degradation of catechol by using catechol 1,2-dioxygenase (C12O). Other microbes were predicted to be mediating bacteria that were able to utilize intermediates via different downstream pathways. Salinity was investigated to have negative effects on both microbial diversity and activity of consortium CY-1 and consortium CY-1 was found with a high degree of functional redundancy in saline environments.
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Hesham AEL, Mohamed EA, Mawad AM, Elfarash A, Abd El-Fattah BS, El-Rawy MA. Molecular Characterization of Fusarium Solani Degrades a Mixture of Low and High Molecular Weight Polycyclic Aromatic Hydrocarbons. ACTA ACUST UNITED AC 2017. [DOI: 10.2174/1874070701711010027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Objectives:This study evaluates the ability of a non-white rot fungus strain, HESHAM-1, to degrade a mixture of low (naphthalene and phenanthrene) and high (chrysene and benzo(a)pyrene) molecular weight polycyclic aromatic hydrocarbons (LMW and HMW PAHs).Methods:Strain HESHAM-1 was isolated from oil polluted soil by enrichment method using phenanthrene as the sole source of carbon and energy. The strain showed the ability to tolerate and degrade a mixture of both low and high molecular weight PAHs. In the presences of LMW-PAHs (naphthalene and phenanthrene) as co-substrate, chrysene and benzo(a)pyrene (HMW-PAHs) were, respectively degraded by the fungus strain HESHAM-1 which was confirmed by GC-MS analyses.Results:The degradation rate was found as 84.82% for naphthalene, 40.09% for phenanthrene, 57.84% for chrysene and 71.06% for benzo(a)pyrene at the end of 10 days. This is the first report describing the biodegradation of a mixture of four PAH compounds by non-white rot fungus strain HESHAM-1 isolated from Egyptian oil-polluted soil. The fungus strain HESHAM-1 was identified by morphological characteristics and molecular genetics technique based on PCR amplification and sequencing of the internal transcribed spacers (ITSs) of the rDNA region and intervening 5.8S rRNA gene. Blast result and phylogenetic analysis of gene sequencing suggested that strain HESHAM-1 was closely related toFusarium solaniwith 100% sequence identity.Conclusion:The present study clearly demonstrates that, strain HESHAM-1 could be used to remove the crude oil from the environment.
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Pyrene degrading Achromobacter denitrificans ASU-035: growth rate, enzymes activity, and cell surface properties. RENDICONTI LINCEI-SCIENZE FISICHE E NATURALI 2016. [DOI: 10.1007/s12210-016-0521-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Hesham AEL, Alrumman SA, Al-Amari JA. 16S rDNA Phylogenetic and RAPD–PCR Analyses of Petroleum Polycyclic Aromatic Hydrocarbons-Degrading Bacteria Enriched from Oil-Polluted Soils. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2015. [DOI: 10.1007/s13369-015-1843-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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