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d’Errico G, Aloj V, Ventorino V, Bottiglieri A, Comite E, Ritieni A, Marra R, Bolletti Censi S, Flematti GR, Pepe O, Vinale F. Methyl t-butyl ether-degrading bacteria for bioremediation and biocontrol purposes. PLoS One 2020; 15:e0228936. [PMID: 32084150 PMCID: PMC7034917 DOI: 10.1371/journal.pone.0228936] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 01/27/2020] [Indexed: 11/27/2022] Open
Abstract
A total of fifteen potential methyl t-butyl ether (MtBE)-degrading bacterial strains were isolated from contaminated soil. They have been identified as belonging to the genera Bacillus, Pseudomonas, Kocuria, Janibacter, Starkeya, Bosea, Mycolicibacterium, and Rhodovarius. Bacillus aryabhattai R1B, S. novella R8b, and M. mucogenicum R8i were able to grow using MtBE as carbon source, exhibiting different growth behavior and contaminant degradation ability. Their biocontrol ability was tested against various fungal pathogens. Both S. novella R8b and B. aryabhattai were effective in reducing the development of necrotic areas on leaves within 48 hours from Botritys cinerea and Alternaria alternata inoculation. Whereas, M. mucogenicum effectively controlled B. cinerea after 72 hours. Similar results were achieved using Pythium ultimum, in which the application of isolated bacteria increased seed germination. Only M. mucogenicum elicited tomato plants resistance against B. cinerea. This is the first report describing the occurrence of bioremediation and biocontrol activities in M. mucogenicum, B. aryabhattai and S. novella species. The production of maculosin and its antibiotic activity against Rhizoctonia solani has been reported for first time from S. novella. Our results highlight the importance of multidisciplinary approaches to achieve a consistent selection of bacterial strains useful for plant protection and bioremediation purposes.
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Affiliation(s)
- Giada d’Errico
- University of Naples Federico II, Department of Agricultural Sciences, Portici (NA), Italy
| | - Veronica Aloj
- University of Naples Federico II, Department of Agricultural Sciences, Portici (NA), Italy
| | - Valeria Ventorino
- University of Naples Federico II, Department of Agricultural Sciences, Portici (NA), Italy
| | - Assunta Bottiglieri
- University of Naples Federico II, Department of Agricultural Sciences, Portici (NA), Italy
| | - Ernesto Comite
- University of Naples Federico II, Department of Agricultural Sciences, Portici (NA), Italy
| | - Alberto Ritieni
- University of Naples Federico II, Department of Pharmacy, Naples, Italy
| | - Roberta Marra
- University of Naples Federico II, Department of Agricultural Sciences, Portici (NA), Italy
| | | | - Gavin R. Flematti
- School of Molecular Sciences, The University of Western Australia, Crawley, WA, Australia
| | - Olimpia Pepe
- University of Naples Federico II, Department of Agricultural Sciences, Portici (NA), Italy
| | - Francesco Vinale
- University of Naples Federico II, Department of Veterinary Medicine and Animal Production, Naples, Italy
- National Research Council, Institute for Sustainable Plant Protection, Portici (NA), Italy
- * E-mail:
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Isolation and characterization of three novel catechol 2,3-dioxygenase from three novel haloalkaliphilic BTEX-degrading Pseudomonas strains. Int J Biol Macromol 2018; 106:1107-1114. [DOI: 10.1016/j.ijbiomac.2017.08.113] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 08/17/2017] [Accepted: 08/18/2017] [Indexed: 11/21/2022]
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Li S, Qian K, Wang S, Liang K, Yan W. Polypyrrole-Grafted Coconut Shell Biological Carbon as a Potential Adsorbent for Methyl Tert-Butyl Ether Removal: Characterization and Adsorption Capability. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017; 14:ijerph14020113. [PMID: 28125030 PMCID: PMC5334667 DOI: 10.3390/ijerph14020113] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 12/28/2016] [Accepted: 01/04/2017] [Indexed: 11/16/2022]
Abstract
Methyl tert-butyl ether (MTBE) has been used as a common gasoline additive worldwide since the late twentieth century, and it has become the most frequently detected groundwater pollutant in many countries. This study aimed to synthesize a novel microbial carrier to improve its adsorptive capacity for MTBE and biofilm formation, compared to the traditional granular activated carbon (GAC). A polypyrrole (PPy)-modified GAC composite (PPy/GAC) was synthesized, and characterized by Fourier transform infrared spectroscopy (FT-IR) and Brunauer-Emmett-Teller (BET) surface area analysis. The adsorption behaviors of MTBE were well described by the pseudo-second-order and Langmuir isotherm models. Furthermore, three biofilm reactors were established with PPy/GAC, PPy, and GAC as the carriers, respectively, and the degradation of MTBE under continuous flow was investigated. Compared to the biofilm reactors with PPy or GAC (which both broke after a period of operation), the PPy/GAC biofilm column produced stable effluents under variable treatment conditions with a long-term effluent MTBE concentration <20 μg/L. Pseudomonas aeruginosa and Acinetobacter pittii may be the predominant bacteria responsible for MTBE degradation in these biofilm reactors.
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Affiliation(s)
- Shanshan Li
- Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Keke Qian
- Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Shan Wang
- Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Kaiqiang Liang
- Research Institute of Yanchang Petroleum (GROUP) Co. Ltd., Xi'an 710075, China.
| | - Wei Yan
- Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
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Bartling CM, Andre JC, Howland CA, Hester ME, Cafmeyer JT, Kerr A, Petrel T, Petrikovics I, Rockwood GA. Stability Characterization of a Polysorbate 80-Dimethyl Trisulfide Formulation, a Cyanide Antidote Candidate. Drugs R D 2016; 16:109-27. [PMID: 26861644 PMCID: PMC4767715 DOI: 10.1007/s40268-016-0122-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Novel cyanide countermeasures are needed for cases of a mass-exposure cyanide emergency. A lead candidate compound is dimethyl trisulfide (DMTS), which acts as a sulfur donor for rhodanese, thereby assisting the conversion of cyanide into thiocyanate. DMTS is a safe compound for consumption and, in a 15% polysorbate 80 (DMTS-PS80) formulation, has demonstrated good efficacy against cyanide poisoning in several animal models. We performed a stability study that investigated the effect of temperature, location of formulation preparation, and pH under buffered conditions. We found that while the stability of the DMTS component was fairly independent of which laboratory prepared the formulation, the concentration of DMTS in the formulation was reduced 36-58% over the course of 29 weeks when stored at room temperature. This loss typically increased with increasing temperatures, although we did not find statistical differences between the stability at different storage temperatures in all formulations. Further, we found that addition of a light buffer negatively impacted the stability, whereas the pH of that buffer did not impact stability. We investigated the factors behind the reduction of DMTS over time using various techniques, and we suggest that the instability of the formulation is governed at least partially by precipitation and evaporation, although a combination of factors is likely involved.
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Affiliation(s)
- Craig M Bartling
- Battelle Memorial Institute, 505 King Ave, Columbus, OH, 43201, USA.
| | - Jon C Andre
- Battelle Memorial Institute, 505 King Ave, Columbus, OH, 43201, USA
| | - Carrie A Howland
- Battelle Memorial Institute, 505 King Ave, Columbus, OH, 43201, USA
| | - Mark E Hester
- Battelle Memorial Institute, 505 King Ave, Columbus, OH, 43201, USA
| | | | - Andrew Kerr
- Battelle Memorial Institute, 505 King Ave, Columbus, OH, 43201, USA
| | - Trevor Petrel
- Battelle Memorial Institute, 505 King Ave, Columbus, OH, 43201, USA
| | | | - Gary A Rockwood
- US Army Medical Research Institute of Chemical Defense (USAMRICD), Aberdeen Proving Ground, MD, USA
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Biodegradation of Methyl Tertiary Butyl Ether (MTBE) by a Microbial Consortium in a Continuous Up-Flow Packed-Bed Biofilm Reactor: Kinetic Study, Metabolite Identification and Toxicity Bioassays. PLoS One 2016; 11:e0167494. [PMID: 27907122 PMCID: PMC5132332 DOI: 10.1371/journal.pone.0167494] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 11/15/2016] [Indexed: 02/01/2023] Open
Abstract
This study investigated the aerobic biodegradation of methyl tertiary-butyl ether (MTBE) by a microbial consortium in a continuous up-flow packed-bed biofilm reactor using tezontle stone particles as a supporting material for the biofilm. Although MTBE is toxic for microbial communities, the microbial consortium used here was able to resist MTBE loading rates up to 128.3 mg L-1 h-1, with removal efficiencies of MTBE and chemical oxygen demand (COD) higher than 90%. A linear relationship was observed between the MTBE loading rate and the MTBE removal rate, as well as between the COD loading rate and the COD removal rate, within the interval of MTBE loading rates from 11.98 to 183.71 mg L-1 h-1. The metabolic intermediate tertiary butyl alcohol (TBA) was not detected in the effluent during all reactor runs, and the intermediate 2-hydroxy butyric acid (2-HIBA) was only detected at MTBE loading rates higher than 128.3 mg L-1 h-1. The results of toxicity bioassays with organisms from two different trophic levels revealed that the toxicity of the influent was significantly reduced after treatment in the packed-bed reactor. The packed-bed reactor system used in this study was highly effective for the continuous biodegradation of MTBE and is therefore a promising alternative for detoxifying MTBE-laden wastewater and groundwater.
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Wang Y, Zhai A, Zhang Y, Qiu K, Wang J, Li Q. Degradation of Swainsonine by the NADP-Dependent Alcohol Dehydrogenase A1R6C3 in Arthrobacter sp. HW08. Toxins (Basel) 2016; 8:toxins8050145. [PMID: 27196926 PMCID: PMC4885060 DOI: 10.3390/toxins8050145] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 04/29/2016] [Accepted: 05/05/2016] [Indexed: 12/02/2022] Open
Abstract
Swainsonine is an indolizidine alkaloid that has been found in locoweeds and some fungi. Our previous study demonstrated that Arthrobacter sp. HW08 or its crude enzyme extract could degrade swainsonie efficiently. However, the mechanism of swainsonine degradation in bacteria remains unclear. In this study, we used label-free quantitative proteomics method based on liquid chromatography-electrospray ionization-tandem mass spectrometry to dissect the mechanism of swainsonine biodegradation by Arthrobacter sp. HW08. The results showed that 129 differentially expressed proteins were relevant to swainsonine degradation. These differentially expressed proteins were mostly related to the biological process of metabolism and the molecular function of catalytic activity. Among the 129 differentially expressed proteins, putative sugar phosphate isomerase/epimerase A1R5X7, Acetyl-CoA acetyltransferase A0JZ95, and nicotinamide adenine dinucleotide phosphate (NADP)-dependent alcohol dehydrogenase A1R6C3 were found to contribute to the swainsonine degradation. Notably, NADP-dependent alcohol dehyrodgenase A1R6C3 appeared to play a major role in degrading swainsonine, but not as much as Arthrobacter sp. HW08 did. Collectively, our findings here provide insights to understand the mechanism of swainsonine degradation in bacteria.
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Affiliation(s)
- Yan Wang
- College of Veterinary Medicine, Northwest A & F University, No. 22 Xinong Road, Yangling 712100, China.
| | - A'guan Zhai
- College of Veterinary Medicine, Northwest A & F University, No. 22 Xinong Road, Yangling 712100, China.
| | - Yanqi Zhang
- College of Veterinary Medicine, Northwest A & F University, No. 22 Xinong Road, Yangling 712100, China.
| | - Kai Qiu
- Hulun Buir Animal Epidemic Prevention and Control Center, Hulun Buir 021000, China.
| | - Jianhua Wang
- College of Veterinary Medicine, Northwest A & F University, No. 22 Xinong Road, Yangling 712100, China.
| | - Qinfan Li
- College of Veterinary Medicine, Northwest A & F University, No. 22 Xinong Road, Yangling 712100, China.
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Abstract
We report the draft genome sequence of Arthrobacter sp. strain Edens01, isolated from a leaf surface of a Rosa hybrid plant as part of the Howard Hughes Medical Institute-funded Student Initiated Microbial Discovery (SIMD) project. The genome has a total size of 3,639,179 bp and contig N50 of 454,897 bp.
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Li S, Li D, Yan W. Cometabolism of methyl tert-butyl ether by a new microbial consortium ERS. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:10196-10205. [PMID: 25697553 DOI: 10.1007/s11356-015-4211-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 02/04/2015] [Indexed: 06/04/2023]
Abstract
The release of methyl tert-butyl-ether (MTBE) into the environment has increased the worldwide concern about the pollution of MTBE. In this paper, a microbial consortium was isolated from the soil sample near an oil station, which can degrade MTBE directly with a low biomass yield and MTBE degrading efficiency. Further research has indicated that this consortium can degrade MTBE efficiently when grown on n-octane as the cometabolic substrate. The results of 16S rDNA based on phylogenetic analysis of the selected operating taxonomic units (OTUs) involved in the consortium revealed that one OTU was related to Pseudomonas putida GPo1, which could cometabolically degrade MTBE on the growth of n-octane. This may help explain why n-octane could be the optimal cometabolic substrate of the consortium for MTBE degradation. Furthermore, the degradation of MTBE was observed along with the consumption of n-octane. Different K s values for MTBE were observed for cells grown with or without n-octane, suggesting that different enzymes are responsible for the oxidation of MTBE in cells grown on n-octane or MTBE. The results are discussed in terms of their impacts on our understanding of MTBE biodegradation and cometabolism.
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Affiliation(s)
- Shanshan Li
- Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
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