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Li X, Song C, Kang X, Chen F, Li A, Wang Y, Zou J, Yin J, Li Y, Sun Z, Ma X, Liu J. Assembly and functional profile of rhizosphere microbial community during the Salix viminalis-AMF remediation of polycyclic aromatic hydrocarbon polluted soils. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 370:122503. [PMID: 39299104 DOI: 10.1016/j.jenvman.2024.122503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 08/30/2024] [Accepted: 09/12/2024] [Indexed: 09/22/2024]
Abstract
Arbuscular mycorrhizal fungi (AMF) are positive to the phytoremediation by improving plant biomass and soil properties. However, the role of AM plants to the remediation of polycyclic aromatic hydrocarbons (PAHs) is yet to be widely recognized, and the impact of AM plants to indigenous microbial communities during remediation remains unclear. In this work, a 90-day study was conducted to assess the effect of AMF-Salix viminalis on the removal of PAHs, and explore the impact to the microbial community composition, abundance, and function. Results showed that AMF-Salix viminalis effectively enhanced the removal of benzo[a]pyrene, and enriched more PAH-degrading bacteria, consisting of Actinobacteria, Chloroflexi, Sphingomonas, and Stenotrophobacter, as well as fungi including Basidiomycota, Pseudogymnoascus, and Tomentella. For gene function, AM willow enhanced the enrichment of genes involved in amino acid synthesis, aminoacyl-tRNA biosynthesis, and cysteine and methionine metabolism pathways. F. mosseae inoculation had a greater effect on alpha- and beta-diversity of microbial genes at 90 d. Additionally, AMF inoculation significantly increased the soil microbial biomass carbon and organic matter concentration. All together, the microbial community assembly and function shaped by AM willow promoted the dissipation of PAHs. Our results support the effectiveness of AM remediation and contribute to reveal the enhancing-remediation mechanism to PAHs using multi-omics data.
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Affiliation(s)
- Xia Li
- College of Agriculture and Bioengineering, Heze University, Heze, 274000, Shandong, China
| | - Chuansheng Song
- College of Agriculture and Bioengineering, Heze University, Heze, 274000, Shandong, China
| | - Xiaofei Kang
- College of Agriculture and Bioengineering, Heze University, Heze, 274000, Shandong, China
| | - Fengzhen Chen
- College of Agriculture and Bioengineering, Heze University, Heze, 274000, Shandong, China
| | - Ao Li
- Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Yuancheng Wang
- Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Junzhu Zou
- Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Jiahui Yin
- Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China; College of Horticulture, Jilin Agricultural University, Changchun, 130000, Jilin, China
| | - Yingying Li
- College of Agriculture and Bioengineering, Heze University, Heze, 274000, Shandong, China
| | - Zhenyuan Sun
- Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Xiaodong Ma
- Department of Forestry Engineering, Shandong Agriculture and Engineering University, Jinan, 250100, Shandong, China.
| | - Junxiang Liu
- Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China.
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Mayans B, Antón-Herrero R, García-Delgado C, Delgado-Moreno L, Guirado M, Pérez-Esteban J, Escolástico C, Eymar E. Bioremediation of petroleum hydrocarbons polluted soil by spent mushroom substrates: Microbiological structure and functionality. JOURNAL OF HAZARDOUS MATERIALS 2024; 473:134650. [PMID: 38776816 DOI: 10.1016/j.jhazmat.2024.134650] [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: 03/22/2024] [Revised: 05/16/2024] [Accepted: 05/17/2024] [Indexed: 05/25/2024]
Abstract
Spent mushroom substrate (SMS) holds valuable microbiota that can be useful in remediating polluted soils with hydrocarbons. However, the microorganisms behind the bioremediation process remain uncertain. In this work, a bioremediation assay of total petroleum hydrocarbons (TPHs) polluted soil by SMS application was performed to elucidate the microorganisms and consortia involved in biodegradation by a metabarcoding analysis. Untreated polluted soil was compared to seven bioremediation treatments by adding SMS of Agaricus bisporus, Pleurotus eryngii, Pleurotus ostreatus, and combinations. Soil microbial activity, TPH biodegradation, taxonomic classification, and predictive functional analysis were evaluated in the microbiopiles at 60 days. Different metagenomics approaches were performed to understand the impact of each SMS on native soil microbiota and TPHs biodegradation. All SMSs enhanced the degradation of aliphatic and aromatic hydrocarbons, being A. bisporus the most effective, promoting an efficient consortium constituted by the bacterial families Alcanivoraceae, Alcaligenaceae, and Dietziaceae along with the fungal genera Scedosporium and Aspergillus. The predictive 16 S rRNA gene study partially explained the decontamination efficacy by observing changes in the taxonomic structure of bacteria and fungi, and changes in the potential profiles of estimated degradative genes across the different treatments. This work provides new insights into TPHs bioremediation.
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Affiliation(s)
- Begoña Mayans
- Department of Agricultural Chemistry and Food Sciences, Universidad Autónoma de Madrid, 28049 Madrid, Spain; Department of Organic and Bio-Organic Chemistry, Universidad Nacional de Educación a Distancia (UNED), 28232 Las Rozas-Madrid, Spain
| | - Rafael Antón-Herrero
- Department of Agricultural Chemistry and Food Sciences, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Carlos García-Delgado
- Department of Geology and Geochemistry, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
| | - Laura Delgado-Moreno
- Department of Agricultural Chemistry and Food Sciences, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - María Guirado
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), 28040 Madrid, Spain
| | - Javier Pérez-Esteban
- Department of Organic and Bio-Organic Chemistry, Universidad Nacional de Educación a Distancia (UNED), 28232 Las Rozas-Madrid, Spain
| | - Consuelo Escolástico
- Department of Organic and Bio-Organic Chemistry, Universidad Nacional de Educación a Distancia (UNED), 28232 Las Rozas-Madrid, Spain
| | - Enrique Eymar
- Department of Agricultural Chemistry and Food Sciences, Universidad Autónoma de Madrid, 28049 Madrid, Spain
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Abu Bakar N, Chung BLY, Smykla J, Karsani SA, Alias SA. Proteomic characterization of Pseudogymnoascus spp. isolates from polar and temperate regions. Mycologia 2024; 116:449-463. [PMID: 38484286 DOI: 10.1080/00275514.2024.2313429] [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: 09/26/2023] [Accepted: 01/30/2024] [Indexed: 05/01/2024]
Abstract
Proteomics has been used extensively in the field of mycology, mainly in trying to understand the complex network of protein-protein interactions that has been implicated in the molecular functions of fungi. It is also a useful tool to compare metabolic differences within a genus. Species of Pseudogymnoascus, a genus under the phyla Ascomycota, have been shown to play an important role in the soil environment. They have been found in both polar and temperate regions and are a known producer of many extracellular hydrolases that contribute to soil decomposition. Despite the apparent importance of Pseudogymnoascus spp. in the soil ecosystem, investigations into their molecular functions are still very limited. In the present study, proteomic characterization of six Pseudogymnoascus spp. isolated from three biogeographic regions (the Arctic, Antarctic, and temperate regions) was carried out using tandem mass spectrometry. Prior to proteomic analysis, the optimization for protein extraction was carried out. Trichloroacetic acid‑acetone‑phenol was found to be the best extraction method to be used for proteomic profiling of Pseudogymnoascus spp. The proteomic analysis identified 2003 proteins that were successfully mapped to the UniProtKB database. The identified proteins were clustered according to their biological processes and molecular functions. The shared proteins found in all Pseudogymnoascus spp. (1201 proteins) showed a significantly close relationship in their basic cellular functions, despite differences in morphological structures. Analysis of Pseudogymnoascus spp. proteome also identified proteins that were unique to each region. However, a high number of these proteins belonged to protein families of similar molecular functions, namely, transferases and hydrolases. Our proteomic data can be used as a reference for Pseudogymnoascus spp. across different global regions and a foundation for future soil ecosystem function research.
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Affiliation(s)
- Nurlizah Abu Bakar
- Institute of Ocean and Earth Sciences, Universiti Malaya, C308, Institute of Advanced Studies Building, Kuala Lumpur 50603, Malaysia
- National Antarctic Research Centre, Universiti Malaya, B303, Institute of Advanced Studies Building, Kuala Lumpur 50603, Malaysia
| | - Benjamin Lau Yii Chung
- Advanced Biotechnology and Breeding Centre, Persiaran Institusi, Malaysian Palm Oil Board, No. 6, Bandar Baru Bangi, Kajang, Selangor 43000, Malaysia
| | - Jerzy Smykla
- Department of Biodiversity, Institute of Nature Conservation, Polish Academy of Sciences, Mickiewicza 33, Krakow 31-120, Poland
| | - Saiful Anuar Karsani
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Siti Aisyah Alias
- Institute of Ocean and Earth Sciences, Universiti Malaya, C308, Institute of Advanced Studies Building, Kuala Lumpur 50603, Malaysia
- National Antarctic Research Centre, Universiti Malaya, B303, Institute of Advanced Studies Building, Kuala Lumpur 50603, Malaysia
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Hkiri N, Aounallah F, Fouzai K, Chouchani C, Asses N. Ability of marine-derived fungi isolated from polluted saline environment for enzymatic hydrocarbon remediation. Braz J Microbiol 2023; 54:1983-2000. [PMID: 37402057 PMCID: PMC10485234 DOI: 10.1007/s42770-023-01049-4] [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: 10/13/2022] [Accepted: 06/20/2023] [Indexed: 07/05/2023] Open
Abstract
Marine-derived fungi have attracted much attention due to their ability to present a new biosynthetic diversity. About 50 fungal isolates were obtained from Tunisian Mediterranean seawater and then screened for the presence of lignin-peroxidase (LiP), manganese-dependent peroxidase (MnP), and laccase (Lac) activities. The results obtained from both qualitative and quantitative assays showed that four of marine fungi isolates had a high potential to produce lignin-degrading enzymes. They were characterized taxonomically by a molecular method, based on international spacer (ITS) rDNA sequence analysis, as Chaetomium jodhpurense (MH667651.1), Chaetomium maderasense (MH665977.1), Paraconiothyrium variabile (MH667653.1), and Phoma betae (MH667655.1) which have been reported as producers of ligninolytic enzyme in the literature. The enzymatic activities and culture conditions were optimized using a Fractional Factorial design (2 7- 4). Then, fungal strains were incubated with the addition of 1% of crude oil in 50% of seawater for 25 days to evaluate their abilities to simultaneously degrade hydrocarbon compounds and to produce ligninolytic enzymes. The strain P. variabile exhibited the highest crude oil degradation rate (48.3%). Significant production of ligninolytic enzymes was recorded during the degradation process, which reached 2730 U/L for the MnP, 410 U/L for LiP, and 168.5 U/L for Lac. The FTIR and GC-MS analysis confirmed that the isolates rapidly biodegrade crude oil under ecological and economic conditions.
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Affiliation(s)
- Neila Hkiri
- LR- Microbial Ecology and Technology, INSAT, University of Carthage, Tunis, Tunisia
- LR- Environmental Sciences and Technologies, University of Carthage, ISSTE, Borj-Cedria, Tunisia
| | - Farah Aounallah
- LR- Microbial Ecology and Technology, INSAT, University of Carthage, Tunis, Tunisia
- LR- Environmental Sciences and Technologies, University of Carthage, ISSTE, Borj-Cedria, Tunisia
| | - Khaoula Fouzai
- LR- Microbial Ecology and Technology, INSAT, University of Carthage, Tunis, Tunisia
- LR- Environmental Sciences and Technologies, University of Carthage, ISSTE, Borj-Cedria, Tunisia
| | - Chedly Chouchani
- LR- Environmental Sciences and Technologies, University of Carthage, ISSTE, Borj-Cedria, Tunisia
| | - Nedra Asses
- LR- Microbial Ecology and Technology, INSAT, University of Carthage, Tunis, Tunisia.
- LR- Environmental Sciences and Technologies, University of Carthage, ISSTE, Borj-Cedria, Tunisia.
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Moreno-Perlin T, Valdés-Muñoz G, Jiménez-Gómez I, Gunde-Cimerman N, Yarzábal Rodríguez LA, Sánchez-Carbente MDR, Vargas-Fernández A, Gutiérrez-Cepeda A, Batista-García RA. Extremely chaotolerant and kosmotolerant Aspergillus atacamensis - a metabolically versatile fungus suitable for recalcitrant biosolid treatment. Front Microbiol 2023; 14:1191312. [PMID: 37455742 PMCID: PMC10338856 DOI: 10.3389/fmicb.2023.1191312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 05/09/2023] [Indexed: 07/18/2023] Open
Abstract
Obligate halophily is extremely rare in fungi. Nevertheless, Aspergillus atacamensis (strain EXF-6660), isolated from a salt water-exposed cave in the Coastal Range hills of the hyperarid Atacama Desert in Chile, is an obligate halophile, with a broad optimum range from 1.5 to 3.4 M of NaCl. When we tested its ability to grow at varied concentrations of both kosmotropic (NaCl, KCl, and sorbitol) and chaotropic (MgCl2, LiCl, CaCl2, and glycerol) solutes, stereoscopy and laser scanning microscopy revealed the formation of phialides and conidia. A. atacamensis EXF-6660 grew up to saturating levels of NaCl and at 2.0 M concentration of the chaotropic salt MgCl2. Our findings confirmed that A. atacamensis is an obligate halophile that can grow at substantially higher MgCl2 concentrations than 1.26 M, previously considered as the maximum limit supporting prokaryotic life. To assess the fungus' metabolic versatility, we used the phenotype microarray technology Biolog FF MicroPlates. In the presence of 2.0 M NaCl concentration, strain EXF-6660 metabolism was highly versatile. A vast repertoire of organic molecules (~95% of the substrates present in Biolog FF MicroPlates) was metabolized when supplied as sole carbon sources, including numerous polycyclic aromatic hydrocarbons, benzene derivatives, dyes, and several carbohydrates. Finally, the biotechnological potential of A. atacamensis for xenobiotic degradation and biosolid treatment was investigated. Interestingly, it could remove biphenyls, diphenyl ethers, different pharmaceuticals, phenols, and polyaromatic hydrocarbons. Our combined findings show that A. atacamensis EXF-6660 is a highly chaotolerant, kosmotolerant, and xerotolerant fungus, potentially useful for xenobiotic and biosolid treatments.
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Affiliation(s)
- Tonatiuh Moreno-Perlin
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Gisell Valdés-Muñoz
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Irina Jiménez-Gómez
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Nina Gunde-Cimerman
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | | | | | - Alfaniris Vargas-Fernández
- Instituto de Investigación en Salud, Facultad de Ciencias de la Salud, Universidad Autónoma de Santo Domingo, Santo Domingo, Dominican Republic
- Instituto de Química, Facultad de Ciencias, Universidad Autónoma de Santo Domingo, Santo Domingo, Dominican Republic
| | - Adrián Gutiérrez-Cepeda
- Instituto de Investigación en Salud, Facultad de Ciencias de la Salud, Universidad Autónoma de Santo Domingo, Santo Domingo, Dominican Republic
- Instituto de Química, Facultad de Ciencias, Universidad Autónoma de Santo Domingo, Santo Domingo, Dominican Republic
| | - Ramón Alberto Batista-García
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
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Fungal bioproducts for petroleum hydrocarbons and toxic metals remediation: recent advances and emerging technologies. Bioprocess Biosyst Eng 2023; 46:393-428. [PMID: 35943595 DOI: 10.1007/s00449-022-02763-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 07/22/2022] [Indexed: 11/02/2022]
Abstract
Petroleum hydrocarbons and toxic metals are sources of environmental contamination and are harmful to all ecosystems. Fungi have metabolic and morphological plasticity that turn them into potential prototypes for technological development in biological remediation of these contaminants due to their ability to interact with a specific contaminant and/or produced metabolites. Although fungal bioinoculants producing enzymes, biosurfactants, polymers, pigments and organic acids have potential to be protagonists in mycoremediation of hydrocarbons and toxic metals, they can still be only adjuvants together with bacteria, microalgae, plants or animals in such processes. However, the sudden accelerated development of emerging technologies related to the use of potential fungal bioproducts such as bioinoculants, enzymes and biosurfactants in the remediation of these contaminants, has boosted fungal bioprocesses to achieve higher performance and possible real application. In this review, we explore scientific and technological advances in bioprocesses related to the production and/or application of these potential fungal bioproducts when used in remediation of hydrocarbons and toxic metals from an integral perspective of biotechnological process development. In turn, it sheds light to overcome existing technological limitations or enable new experimental designs in the remediation of these and other emerging contaminants.
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Kumar VV, Venkataraman S, Kumar PS, George J, Rajendran DS, Shaji A, Lawrence N, Saikia K, Rathankumar AK. Laccase production by Pleurotus ostreatus using cassava waste and its application in remediation of phenolic and polycyclic aromatic hydrocarbon-contaminated lignocellulosic biorefinery wastewater. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 309:119729. [PMID: 35809710 DOI: 10.1016/j.envpol.2022.119729] [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: 02/09/2022] [Revised: 06/21/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
The treatment of contaminants from lignocellulosic biorefinery effluent has recently been identified as a unique challenge. This study focuses on removing phenolic contaminants and polycyclic aromatic hydrocarbons (PAHs) from lignocellulosic biorefinery wastewater (BRW) applying a laccase-assisted approach. Cassava waste was used as a substrate to produce the maximum yield of laccase enzyme (3.9 U/g) from Pleurotus ostreatus. Among the different inducers supplemented, CuSO4 (0.5 mM) showed an eight-fold increase in enzyme production (30.8 U/g) after 240 h of incubation. The catalytic efficiency of laccase was observed as 128.7 ± 8.47 S-1mM-1 for syringaldazine oxidation at optimum pH 4.0 and 40 °C. Laccase activity was completely inhibited by lead (II) ion, mercury (II) ion, sodium dodecyl sulphate, sodium azide and 1,4 dithiothretiol and induced significantly by manganese (II) ion and rhamnolipid. After treating BRW with laccase, the concentrations of PAHs and phenolic contaminants of 1144 μg/L and 46160 μg/L were reduced to 96 μg/L and 16100 μg/L, respectively. The ability of laccase to effectively degrade PAHs in the presence of different phenolic compounds implies that phenolic contaminants may play a role in PAHs degradation. After 240 h, organic contaminants were removed from BRW in the following order: phenol >2,4-dinitrophenol > 2-methyl-4,6-dinitrophenol > 2,3,4,6-tetrachlorophenol > acenaphthene > fluorine > phenanthrene > fluoranthene > pyrene > anthracene > chrysene > naphthalene > benzo(a)anthracene > benzo(a)pyrene > benzo(b)fluoranthene > pentachlorophenol > indeno(1,2,3-cd)pyrene > benzo(j) fluoranthene > benzo[k]fluoranthène. The multiple contaminant remediation from the BRW by enzymatic method, clearly suggests that the laccase can be used as a bioremediation tool for the treatment of wastewater from various industries.
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Affiliation(s)
- Vaidyanathan Vinoth Kumar
- Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology (SRM IST), Kattankulathur, 603 203, India
| | - Swethaa Venkataraman
- Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology (SRM IST), Kattankulathur, 603 203, India
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, Tamilnadu, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, Tamilnadu, India; Department of Biotechnology Engineering and Food Technology, Chandigarh University, Mohali, 140413, India.
| | - Jenet George
- Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology (SRM IST), Kattankulathur, 603 203, India
| | - Devi Sri Rajendran
- Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology (SRM IST), Kattankulathur, 603 203, India
| | - Anna Shaji
- Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology (SRM IST), Kattankulathur, 603 203, India
| | - Nicole Lawrence
- Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology (SRM IST), Kattankulathur, 603 203, India
| | - Kongkona Saikia
- Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology (SRM IST), Kattankulathur, 603 203, India; Department of Biochemistry, Faculty of Arts, Science and Humanities, Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu, 641050, India
| | - Abiram Karanam Rathankumar
- Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology (SRM IST), Kattankulathur, 603 203, India; Department of Biotechnology, Faculty of Engineering, Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu, 641050, India
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Zain Ul Arifeen M, Ma Y, Wu T, Chu C, Liu X, Jiang J, Li D, Xue YR, Liu CH. Anaerobic biodegradation of polycyclic aromatic hydrocarbons (PAHs) by fungi isolated from anaerobic coal-associated sediments at 2.5 km below the seafloor. CHEMOSPHERE 2022; 303:135062. [PMID: 35618067 DOI: 10.1016/j.chemosphere.2022.135062] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 05/19/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
Fungi represent the dominant eukaryotic group in the deep biosphere and well-populated in the anaerobic coal-bearing sediments up to ∼2.5 km below seafloor (kmbsf). But whether fungi are able to degrade and utilize coal to sustain growth in the anaerobic sub-seafloor environment remains unknown. Based on biodegradation investigation, we found that fungi isolated from sub-seafloor sediments at depths of ∼1.3-∼2.5 kmbsf showed a broad range of polycyclic aromatic hydrocarbons (PAHs) anaerobic degradation rates (3-25%). Among them, the white-rot fungus Schizophyllium commune 20R-7-F01 exhibited the highest degradation, 25%, 18% and 13%, of phenanthrene (Phe), pyrene (Pyr) and benzo[a]pyrene (BaP); respectively, after 10 days of anaerobic incubation. Phe was utilized well and about 40.4% was degraded by the fungus, after 20 days of anaerobic incubation. Moreover, the ability of fungi to degrade PAHs was positively correlated with the anaerobic growth of fungi, indicating that fungi can use PAHs as a sole carbon source under anoxic conditions. In addition, fungal degradation of PAHs was found to be related to the activity of carboxylases, but little or nothing to do with the activity of lignin modifying enzymes such as laccase (Lac), manganese peroxidase (MnP) and lignin peroxidase (LiP). These results suggest that sub-seafloor fungi possess a special mechanism to degrade and utilize PAHs as a carbon and energy source under anaerobic conditions. Furthermore, fungi living in sub-seafloor sediments may not only play an important role in carbon cycle in the anaerobic environments of the deep biosphere, but also be able to persist in deep sediment below seafloor for millions of years by using PAHs or related compounds as carbon and energy source. This anaerobic biodegradation ability could make these fungi suitable candidates for bioremediation of toxic pollutants such as PAHs from anoxic environments.
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Affiliation(s)
- Muhammad Zain Ul Arifeen
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Yunan Ma
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Tianshang Wu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Chen Chu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Xuan Liu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Junpeng Jiang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Dongxu Li
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Ya-Rong Xue
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Chang-Hong Liu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China.
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Kumar Vaidyanathan V, Venkataraman S, Senthil Kumar P, Sri Rajendran D, Saikia K, Karanam Rathankumar A, Cabana H, Varjani S. Mycoremediation of lignocellulosic biorefinery sludge: A reinvigorating approach for organic contaminants remediation with simultaneous production of lignocellulolytic enzyme cocktail. BIORESOURCE TECHNOLOGY 2022; 351:127012. [PMID: 35306132 DOI: 10.1016/j.biortech.2022.127012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 03/10/2022] [Accepted: 03/12/2022] [Indexed: 06/14/2023]
Abstract
This research work aims to valorize lignocellulosic biorefinery sludge with genetically engineered Trichoderma atroviride for simultaneous removal of organic contaminants, fermentation inhibitors, and lignocellulolytic enzyme cocktail production. Upon analysis, three phenolic compounds (42.6 ± 3.6 μg/g), two polycyclic aromatic hydrocarbons (0.42 ± 0.06 μg/g) and five fermentation inhibitors (2.5 ± 0.3 mg/g) were detected in the sludge. Bioaugmentation of sludge with 72 h-old T. atroviride (5%) results in the production of cellulase (21 U/g), xylanase (84 U/g), laccase (20 U/g), lignin peroxidase (14 U/g) and aryl alcohol oxidase (116 U/g), along with the concomitant removal of organic contaminants (phenol, 2, 4-dinitrophenol, pentchlorophenol, phenanthrene, benzo(a)pyrene) and fermentation inhibitors (furfural, 5-hydroxymethylfurfural, levulinic acid, ferulic acid, and catechol). Subsequently, the enrichment of sludge with nutrients and rhamnolipids enhanced the enzyme production by 5-6-fold and resulted in the removal of 85-95% of organic contaminants and fermentation inhibitors, which constitutes an eco-friendly process.
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Affiliation(s)
- Vinoth Kumar Vaidyanathan
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603 203, India; University of Sherbrooke, Environmental Engineering Laboratory, Faculty of Engineering, Université de Sherbrooke, 2500 boul. de l'Université, Sherbrooke, Quebec J1K 2R1, Canada
| | - Swethaa Venkataraman
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603 203, India
| | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam 603 110, Chennai, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam 603 110, Chennai, India
| | - Devi Sri Rajendran
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603 203, India
| | - Kongkona Saikia
- University of Sherbrooke, Environmental Engineering Laboratory, Faculty of Engineering, Université de Sherbrooke, 2500 boul. de l'Université, Sherbrooke, Quebec J1K 2R1, Canada; Department of Biochemistry, FASH, Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu 641021, India
| | - Abiram Karanam Rathankumar
- University of Sherbrooke, Environmental Engineering Laboratory, Faculty of Engineering, Université de Sherbrooke, 2500 boul. de l'Université, Sherbrooke, Quebec J1K 2R1, Canada; Department of Biotechnology, Faculty of Engineering, Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu 641021, India
| | - Hubert Cabana
- University of Sherbrooke, Environmental Engineering Laboratory, Faculty of Engineering, Université de Sherbrooke, 2500 boul. de l'Université, Sherbrooke, Quebec J1K 2R1, Canada
| | - Sunita Varjani
- Gujarat Pollution Control Board, Gandhinagar, Gujarat 382 010, India.
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Vaithyanathan VK, Vaidyanathan VK, Cabana H. Laccase-Driven Transformation of High Priority Pesticides Without Redox Mediators: Towards Bioremediation of Contaminated Wastewaters. Front Bioeng Biotechnol 2022; 9:770435. [PMID: 35223809 PMCID: PMC8874138 DOI: 10.3389/fbioe.2021.770435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 12/17/2021] [Indexed: 11/13/2022] Open
Abstract
In this study, Pleurotus dryinus was grown on municipal biosolids (BS) as the substrate to produce laccase for the removal of pesticides (fungicides, herbicides, and insecticides) from wastewater. Among the various types of BS tested, sterilized biosolids were the most promising substrate for laccase production by P. dryinus with a maximal laccase activity (162.1 ± 21.1 U/g dry substrate), followed by hygenized biosolids (96.7 ± 17.6 U/g dry substrate), unsterilized biosolids (UBS) (31.9 ± 1.2 U/g dry substrate), and alkali-treated biosolids (8.2 ± 0.4 U/g dry substrate). The ultrasound-assisted extraction of this enzyme from fermented UBS was carried out with 0.1 M phosphate buffer at pH 7.0, which increased the enzyme activity of the crude extract by 30%. To test the catalytic potential of the biocatalyst in real matrices, 1 U/ml of recovered crude laccase extract was applied for 24 h for the removal of 29 pesticides (nine fungicides, 10 herbicides, and 10 insecticides) either separately or as a mixture from spiked biologically treated wastewater effluent. When treated with crude enzyme extract, high-priority herbicides metolachlor and atrazine were completely removed, while 93%–97% of the insecticides aldicarb, spinosad, and azinphos-methyl and up to 91% of kresoxim-methyl were removed. Promising results were obtained with BS-derived crude enzyme extract exhibiting improved pesticides removal, which may be due to the mediator effect resulting from the catalytic transformation of other molecules in the cocktail. The results demonstrated a promising integrated bioprocess for the removal of pesticides in wastewater using crude laccase obtained from BS.
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Affiliation(s)
- Vasanth Kumar Vaithyanathan
- University of Sherbrooke Water Research Group, Environmental Engineering Laboratory, Faculty of Engineering, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Vinoth Kumar Vaidyanathan
- University of Sherbrooke Water Research Group, Environmental Engineering Laboratory, Faculty of Engineering, Université de Sherbrooke, Sherbrooke, QC, Canada
- Integrated Bioprocessing Laboratory, School of Bioengineering, SRM Institute of Science and Technology (SRM IST), Kancheepuram, India
| | - Hubert Cabana
- University of Sherbrooke Water Research Group, Environmental Engineering Laboratory, Faculty of Engineering, Université de Sherbrooke, Sherbrooke, QC, Canada
- *Correspondence: Hubert Cabana,
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11
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Zhou Z, Wang J, Xue W, Zou Y, Liu G, Tian Z. Development of shipboard automatic flow injection analysis-Surface-enhanced Raman spectroscopy instrument toward onsite detection of trace polycyclic aromatic hydrocarbons in water environment. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2021; 92:104102. [PMID: 34717398 DOI: 10.1063/5.0043038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 09/03/2021] [Indexed: 06/13/2023]
Abstract
The qualitative and quantitative analysis of polycyclic aromatic hydrocarbons (PAHs) has been important for the environmental control of persistent organic pollutants for decades. Considering the potential risk of deterioration, degradation, and external pollution during transportation, the development of rapid and onsite detection of trace PAHs is in demand. Here, taking the advantage of high sensitivity of surface-enhanced Raman spectroscopy (SERS), we developed a shipboard instrument by combining a portable Raman instrument and a flow injection device, integrating the sample pretreatment and target detection step by step. The feasibility of the instrument was demonstrated by detecting trace benzo[a]pyrene from different water environments with the lowest detection concentration less than 1 µg/l. The reliable stability and repeatability indicate that in the case of emergency response, the developed flow injection analysis-SERS instrument is very promising for the quantitative and qualitative analysis of diverse organic pollutants other than PAHs in water environments.
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Affiliation(s)
- Zhifan Zhou
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Juyong Wang
- State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Wendong Xue
- Department of Instrumental and Electrical Engineering, Xiamen University, Xiamen, China
| | - Yisong Zou
- State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Guokun Liu
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Zhongqun Tian
- State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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12
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Nikolaivits E, Siaperas R, Agrafiotis A, Ouazzani J, Magoulas A, Gioti Α, Topakas E. Functional and transcriptomic investigation of laccase activity in the presence of PCB29 identifies two novel enzymes and the multicopper oxidase repertoire of a marine-derived fungus. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 775:145818. [PMID: 33631558 DOI: 10.1016/j.scitotenv.2021.145818] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 02/04/2021] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
Polychlorinated biphenyls (PCBs) are persistent organic pollutants (POPs), that can be detected in a variety of environments including the human body, adversely affecting global health. Bioremediation is an emerging field for the detoxification and removal of environmental pollutants, with novel biocatalysts appropriate for this task being in high demand. In this study, a biobank of novel fungal strains isolated as symbionts of marine invertebrates was screened for their ability to remove 2,4,5-trichlorobiphenyl (PCB29). The most efficient strains were studied further for their ability to express laccase activity, the most commonly associated extracellular activity involved in the removal of aromatic pollutants and encoded in fungi by the enzymatic class of multicopper oxidases (MCOs). The strain expressing the highest laccase activity, Cladosporium sp. TM138-S3, was cultivated in the presence of copper ions in a 12 L bioreactor and two enzymes exhibiting laccase activity were isolated from the culture broth through ion-exchange chromatography. The two enzymes, Lac1 and Lac2, were biochemically characterized and showed similar characteristics, although an improved ability to remove PCB29 (up to 71.2%) was observed for Lac2 in the presence of mediators. In parallel, we performed RNAseq of the strain growing in presence and absence of PCB29 and reconstructed its transcriptome assembly. Functional annotation allowed identifying the MCO repertoire of the fungus, consisting of 13 enzymes. Phylogenetic analysis of Ascomycete MCOs further allowed classifying these enzymes, revealing the diversity of laccase activities in Cladosporium sp. TM138-S3.
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Affiliation(s)
- Efstratios Nikolaivits
- Industrial Biotechnology & Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, Athens, Greece
| | - Romanos Siaperas
- Industrial Biotechnology & Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, Athens, Greece
| | - Andreas Agrafiotis
- Industrial Biotechnology & Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, Athens, Greece
| | - Jamal Ouazzani
- Institut de Chimie des Substances Naturelles, ICSN, CNRS, Gif sur Yvette, France
| | - Antonios Magoulas
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, Heraklion, Greece
| | - Αnastasia Gioti
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, Heraklion, Greece
| | - Evangelos Topakas
- Industrial Biotechnology & Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, Athens, Greece.
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13
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Rathankumar AK, Saikia K, Ponnusamy SK, Del Rayo Sánchez-Carbente M, Vaidyanathan VK. Rhamnolipid-assisted mycoremediation of polycyclic aromatic hydrocarbons by Trametes hirsuta coupled with enhanced ligninolytic enzyme production. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2020; 70:1260-1267. [PMID: 32603633 DOI: 10.1080/10962247.2020.1790443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 06/06/2020] [Accepted: 06/25/2020] [Indexed: 06/11/2023]
Abstract
The present study deals with the development of a wood assisted fungal system (WAFS) from wood chips using Trametes hirsuta to remove polycyclic aromatic hydrocarbons (PAHs) in BRW. The WAFS exhibited a 1.4-fold higher ligninolytic enzyme production than free fungi in the effluent. Further, to understand PAHs bioremediation by T. hirsuta, biodegradation along with biosorption were studied in model PAHs, phenanthrene (Phe) and benzo (a) pyrene (BaP), in the presence of synthesized rhamnolipids. The WAFS mineralized up to an average of 91.26% Phe and 87.72 % BaP along with biosorption of 12.35% Phe and 18.36 % BaP within 12 days. Thus, the addition of rhamnolipids showed 1.2-fold enhanced biodegradation. However, rhamnolipid concentrations beyond 50 ppm reduced the degradation efficiency of WAFS. Moreover, the degradation capability of total aromatic hydrocarbon (TAH) in biorefinery wastewater by WAFS is 1.8-fold higher than that of free fungi, which confirms the effectiveness of the system. Implications: Simultaneous application of white-rot fungus along with surfactant into a pollutant environment affects the microenvironment of the fungus and reduces the production of their degradative enzymes. In addition, the requirement of periodical supplement of external nutrient in the real-time matrix for the growth of white rot fungi may trigger competitive growth of indigenous microorganisms. Considering this glitch, the current work utilizes the carpenter waste for the strategical develop a wood assisted fungal system to protect the microenvironment of the fungi in the presence of rhamnolipids and contribute to their survival in real time matrix, with enhanced PAHs degradation efficiency.
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Affiliation(s)
- Abiram Karanam Rathankumar
- Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology (SRMIST) , Kattankulathur, India
- Centre of Biotechnological Research (CEIB), Universidad Autónoma del Estado de Morelos , Cuernavaca, México
- Laboratoire de génie de l'environnement, Faculté de génie, Université de Sherbrooke , Sherbrooke, Québec, Canada
| | - Kongkona Saikia
- Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology (SRMIST) , Kattankulathur, India
- Laboratoire de génie de l'environnement, Faculté de génie, Université de Sherbrooke , Sherbrooke, Québec, Canada
| | | | | | - Vinoth Kumar Vaidyanathan
- Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology (SRMIST) , Kattankulathur, India
- Centre of Biotechnological Research (CEIB), Universidad Autónoma del Estado de Morelos , Cuernavaca, México
- Laboratoire de génie de l'environnement, Faculté de génie, Université de Sherbrooke , Sherbrooke, Québec, Canada
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14
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Ligninolytic Enzyme Production and Decolorization Capacity of Synthetic Dyes by Saprotrophic White Rot, Brown Rot, and Litter Decomposing Basidiomycetes. J Fungi (Basel) 2020; 6:jof6040301. [PMID: 33228232 PMCID: PMC7711621 DOI: 10.3390/jof6040301] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/13/2020] [Accepted: 11/17/2020] [Indexed: 01/18/2023] Open
Abstract
An extensive screening of saprotrophic Basidiomycetes causing white rot (WR), brown rot (BR), or litter decomposition (LD) for the production of laccase and Mn-peroxidase (MnP) and decolorization of the synthetic dyes Orange G and Remazol Brilliant Blue R (RBBR) was performed. The study considered in total 150 strains belonging to 77 species. The aim of this work was to compare the decolorization and ligninolytic capacity among different ecophysiological and taxonomic groups of Basidiomycetes. WR strains decolorized both dyes most efficiently; high decolorization capacity was also found in some LD fungi. The enzyme production was recorded in all three ecophysiology groups, but to a different extent. All WR and LD fungi produced laccase, and the majority of them also produced MnP. The strains belonging to BR lacked decolorization capabilities. None of them produced MnP and the production of laccase was either very low or absent. The most efficient decolorization of both dyes and the highest laccase production was found among the members of the orders Polyporales and Agaricales. The strains with high MnP activity occurred across almost all fungal orders (Polyporales, Agaricales, Hymenochaetales, and Russulales). Synthetic dye decolorization by fungal strains was clearly related to their production of ligninolytic enzymes and both properties were determined by the interaction of their ecophysiology and taxonomy, with a more relevant role of ecophysiology. Our screening revealed 12 strains with high decolorization capacity (9 WR and 3 LD), which could be promising for further biotechnological utilization.
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15
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Peidro-Guzmán H, Pérez-Llano Y, González-Abradelo D, Fernández-López MG, Dávila-Ramos S, Aranda E, Hernández DRO, García AO, Lira-Ruan V, Pliego OR, Santana MA, Schnabel D, Jiménez-Gómez I, Mouriño-Pérez RR, Aréchiga-Carvajal ET, Del Rayo Sánchez-Carbente M, Folch-Mallol JL, Sánchez-Reyes A, Vaidyanathan VK, Cabana H, Gunde-Cimerman N, Batista-García RA. Transcriptomic analysis of polyaromatic hydrocarbon degradation by the halophilic fungus Aspergillus sydowii at hypersaline conditions. Environ Microbiol 2020; 23:3435-3459. [PMID: 32666586 DOI: 10.1111/1462-2920.15166] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 07/11/2020] [Accepted: 07/12/2020] [Indexed: 01/22/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are among the most persistent xenobiotic compounds, with high toxicity effects. Mycoremediation with halophilic Aspergillus sydowii was used for their removal from a hypersaline medium (1 M NaCl). A. sydowii metabolized PAHs as sole carbon sources, resulting in the removal of up to 90% for both PAHs [benzo [a] pyrene (BaP) and phenanthrene (Phe)] after 10 days. Elimination of Phe and BaP was almost exclusively due to biotransformation and not adsorption by dead mycelium and did not correlate with the activity of lignin modifying enzymes (LME). Transcriptomes of A. sydowii grown on PAHs, or on glucose as control, both at hypersaline conditions, revealed 170 upregulated and 76 downregulated genes. Upregulated genes were related to starvation, cell wall remodelling, degradation and metabolism of xenobiotics, DNA/RNA metabolism, energy generation, signalling and general stress responses. Changes of LME expression levels were not detected, while the chloroperoxidase gene, possibly related to detoxification processes in fungi, was strongly upregulated. We propose that two parallel metabolic pathways (mitochondrial and cytosolic) are involved in degradation and detoxification of PAHs in A. sydowii resulting in intracellular oxidation of PAHs. To the best of our knowledge, this is the most comprehensive transcriptomic analysis on fungal degradation of PAHs.
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Affiliation(s)
- Heidy Peidro-Guzmán
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Yordanis Pérez-Llano
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Deborah González-Abradelo
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Maikel Gilberto Fernández-López
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Sonia Dávila-Ramos
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Elisabet Aranda
- Instituto Universitario de Investigación del Agua, Universidad de Granada, Granada, Spain
| | | | - Angélica Ortega García
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Verónica Lira-Ruan
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Oscar Ramírez Pliego
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - María Angélica Santana
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Denhi Schnabel
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, Mexico
| | - Irina Jiménez-Gómez
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Rosa R Mouriño-Pérez
- Centro de Investigación Cientifica y Educación Superior de Ensenada, Ensenada, Baja California, Mexico
| | - Elva T Aréchiga-Carvajal
- Facultad de Ciencias Biológicas, Unidad de Manipulación Genética, Universidad Autónoma de Nuevo León, Monterrey, Nuevo León, Mexico
| | | | - Jorge Luis Folch-Mallol
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
| | - Ayixon Sánchez-Reyes
- Cátedras Conacyt - Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, Mexico
| | | | - Hubert Cabana
- Faculté de Genié, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Nina Gunde-Cimerman
- Departament of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Ramón Alberto Batista-García
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico
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Rathankumar AK, Saikia K, Ramachandran K, Batista RA, Cabana H, Vaidyanathan VK. Effect of soil organic matter (SOM) on the degradation of polycyclic aromatic hydrocarbons using Pleurotus dryinus IBB 903-A microcosm study. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 260:110153. [PMID: 32090843 DOI: 10.1016/j.jenvman.2020.110153] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 01/09/2020] [Accepted: 01/15/2020] [Indexed: 06/10/2023]
Abstract
Bioremediation of polycyclic aromatic hydrocarbons (PAHs) in soil matrix is often arbitrated by the presence of soil organic matter (SOM). The present study focuses on determining the effect of the soil organic content on the mycoremediation of two model PAHs, phenanthrene (Phe) and benzo(a) pyrene (BaP) through microcosm studies. On comparing various microcosm strategies, a maximum degradation of Phe (99%) and BaP (48.5%) in soil bioaugmented with Pleurotus dryinus IBB 903, followed by, biostimulation with the degradation of Phe (89.9%) and BaP (24.8%) were noted. On relating the degradation pattern with lignolytic enzyme cocktail production, a laccase activity of 108 U/Kg at day 21, aryl alcohol oxidase (411 U/Kg) and manganese peroxidase (52.2 U/Kg) at day 14 along with lignin peroxidase (481 U/Kg) at day 21 were noted in fungal augmented soils, which were comparatively higher than levels observed in the bio-stimulation. Investigating the impact of different concentration of SOM (3-12%), a maximum remediation of Phe by 100% at 9% SOM in days 28 and 58.19% for BaP at 12% SOM, respectively was exhibited. Further, the biosorption effect of PAHs in abiotic condition showed a positive correlation with the increase in SOM, with a maximum adsorption of 3.78% Phe, and 6.93% BaP. The results support that the nominal adsorption ability of SOM, and helps in enhancing the microbial growth, thereby improving their degradation potentials, when less than 6% of SOM was utilized. Overall, this work establishes the critical role of organic matter in the soil with reference by simultaneous stimulation and degradation capability in complete PAHs remediation.
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Affiliation(s)
- Abiram Karanam Rathankumar
- Integrated Bioprocess Laboratory, Department of Biotechnology, SRM Institute of Science and Technology, Kathankulathur, Tamil Nadu, India
| | - Kongkona Saikia
- Integrated Bioprocess Laboratory, Department of Biotechnology, SRM Institute of Science and Technology, Kathankulathur, Tamil Nadu, India
| | - Krishnakumar Ramachandran
- Integrated Bioprocess Laboratory, Department of Biotechnology, SRM Institute of Science and Technology, Kathankulathur, Tamil Nadu, India
| | - Ramon Alberto Batista
- Laboratorio Fisiología Molecular Microorganismos Extremófilos, Centro de Investigaciones en Dinámica Celular. Universidad Autónoma del Estado de Morelos, Cuernavaca, Mexico
| | - Hubert Cabana
- Laboratoire de génie de l'environnement, Faculté de génie, Université de Sherbrooke, 2500 boul. de l'Université, Sherbrooke, Québec, J1K 2R1, Canada.
| | - Vinoth Kumar Vaidyanathan
- Integrated Bioprocess Laboratory, Department of Biotechnology, SRM Institute of Science and Technology, Kathankulathur, Tamil Nadu, India.
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Zango ZU, Jumbri K, Sambudi NS, Hanif Abu Bakar NH, Fathihah Abdullah NA, Basheer C, Saad B. Removal of anthracene in water by MIL-88(Fe), NH 2-MIL-88(Fe), and mixed-MIL-88(Fe) metal-organic frameworks. RSC Adv 2019; 9:41490-41501. [PMID: 35541585 PMCID: PMC9076480 DOI: 10.1039/c9ra08660a] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 11/26/2019] [Indexed: 01/08/2023] Open
Abstract
Three adsorbents based on the metal-organic frameworks (MOFs), viz.; MIL-88(Fe), NH2-MIL-88(Fe), and mixed-MIL-88(Fe) were synthesized using a microwave-assisted solvothermal technique. The as-synthesized MOFs were characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), field emission scanning microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), and Fourier transform infrared spectroscopy (FTIR). The MOFs were shown to possess highly crystalline and porous structures with specific surface areas of 1240, 941, and 1025 m2 g-1 and pore volumes of 0.7, 0.6 and 0.6 m3 g-1 for MIL-88(Fe), NH2-MIL-88(Fe) and mixed-MIL-88(Fe), respectively. Faster removal of a model polycyclic aromatic hydrocarbon, anthracene (ANT) within 25 minutes, was achieved when these MOFs were used as adsorbents in water. The removal efficiency was 98.3, 92.4 and 95.8% for MIL-88(Fe), NH2-MIL-88(Fe) and mixed-MIL-88(Fe), respectively. The kinetics and isotherms of the process were best statistically described by pseudo-second-order and Langmuir models, respectively, while the thermodynamic studies revealed the exothermic and spontaneous nature of the process. Docking simulations were found to be consistent with the experimental results with MIL-88(Fe) showing the best binding capacity with the ANT molecule.
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Affiliation(s)
- Zakariyya Uba Zango
- Fundamental and Applied Sciences Department, Universiti Teknologi PETRONAS Seri Iskandar Perak Malaysia
| | - Khairulazhar Jumbri
- Fundamental and Applied Sciences Department, Universiti Teknologi PETRONAS Seri Iskandar Perak Malaysia
| | - Nonni Soraya Sambudi
- Chemical Engineering Department, Universiti Teknologi PETRONAS Seri Iskandar Perak Malaysia
| | | | - Nor Ain Fathihah Abdullah
- Fundamental and Applied Sciences Department, Universiti Teknologi PETRONAS Seri Iskandar Perak Malaysia
| | - Chanbasha Basheer
- Department of Chemistry, King Fahd University of Petroleum and Minerals Dhahran Saudi Arabia
| | - Bahruddin Saad
- Fundamental and Applied Sciences Department, Universiti Teknologi PETRONAS Seri Iskandar Perak Malaysia
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González-Abradelo D, Pérez-Llano Y, Peidro-Guzmán H, Sánchez-Carbente MDR, Folch-Mallol JL, Aranda E, Vaidyanathan VK, Cabana H, Gunde-Cimerman N, Batista-García RA. First demonstration that ascomycetous halophilic fungi (Aspergillus sydowii and Aspergillus destruens) are useful in xenobiotic mycoremediation under high salinity conditions. BIORESOURCE TECHNOLOGY 2019; 279:287-296. [PMID: 30738355 DOI: 10.1016/j.biortech.2019.02.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 01/30/2019] [Accepted: 02/01/2019] [Indexed: 06/09/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAH) and pharmaceutical compounds (PhC) are xenobiotics present in many saline wastewaters. Although fungi are known for their ability to remove xenobiotics, the potential of halophilic fungi to degrade highly persistent pollutants was not yet investigated. The use of two halophilic fungi, Aspergillus sydowii and Aspergillus destruens, for the elimination of PAH and PhC at saline conditions was studied. In saline synthetic medium both fungi used benzo-α-pyrene and phenanthrene as sole carbon source and removed over 90% of both PAH, A. sydowii due to biodegradation and A. destruens to bioadsorption. They removed 100% of a mixture of fifteen PAH in saline biorefinery wastewater. Test using Cucumis sativus demonstrated that wastewater treated with the two fungi lowered considerably the phytotoxicity. This study is the first demonstration that ascomycetous halophilic fungi, in contrast to other fungi (and in particular basidiomycetes) can be used for mycotreatments under salinity conditions.
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Affiliation(s)
- Deborah González-Abradelo
- Centro de Investigación en Dinámica Celular, Instituto de Investigaciones en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos (UAEM), Ave. Universidad 1001, Col. Chamilpa, CP. 62209 Cuernavaca, Morelos, Mexico
| | - Yordanis Pérez-Llano
- Centro de Investigación en Dinámica Celular, Instituto de Investigaciones en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos (UAEM), Ave. Universidad 1001, Col. Chamilpa, CP. 62209 Cuernavaca, Morelos, Mexico
| | - Heidy Peidro-Guzmán
- Centro de Investigación en Dinámica Celular, Instituto de Investigaciones en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos (UAEM), Ave. Universidad 1001, Col. Chamilpa, CP. 62209 Cuernavaca, Morelos, Mexico
| | - María Del Rayo Sánchez-Carbente
- Centro de Investigaciones en Biotecnología, UAEM, Ave. Universidad 1001, Col. Chamilpa, CP. 62209 Cuernavaca, Morelos, Mexico
| | - Jorge Luis Folch-Mallol
- Centro de Investigaciones en Biotecnología, UAEM, Ave. Universidad 1001, Col. Chamilpa, CP. 62209 Cuernavaca, Morelos, Mexico
| | - Elisabet Aranda
- Instituto Universitario de Investigación del Agua, Universidad de Granada, Calle Núñez Blanca 1, CP. 18003 Granada, Spain
| | - Vinoth Kumar Vaidyanathan
- Department of Biotechnology, SRM Institute of Science and Technology, Mahatma Gandhi Rd, Potheri, SRM Nagar, Kattankulathur 603203, Tamil Nadu, India
| | - Hubert Cabana
- Faculté de Genié, Université de Sherbrooke, Sherbrooke, 2500 Boulevard de l Université, J1K 2R1 Sherbrooke, Quebec, Canada
| | - Nina Gunde-Cimerman
- Faculty of Biology, University of Ljubljana, Kongresni trg 12, 1000 Ljubljana, Slovenia
| | - Ramón Alberto Batista-García
- Centro de Investigación en Dinámica Celular, Instituto de Investigaciones en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos (UAEM), Ave. Universidad 1001, Col. Chamilpa, CP. 62209 Cuernavaca, Morelos, Mexico; Faculty of Biology, University of Ljubljana, Kongresni trg 12, 1000 Ljubljana, Slovenia.
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Folch-Mallol JL, Zárate A, Sánchez-Reyes A, López-Lara IM. Expression, purification, and characterization of a metagenomic thioesterase from activated sludge involved in the degradation of acylCoA-derivatives. Protein Expr Purif 2019; 159:49-52. [PMID: 30905871 DOI: 10.1016/j.pep.2019.03.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 03/14/2019] [Accepted: 03/18/2019] [Indexed: 12/28/2022]
Abstract
Metagenomic libraries are a novel and powerful approach to seek for pathways involved in xenobiotic degradation, since this technique abolishes the need for cultivating microorganisms that otherwise would be overlooked if they cannot grow on standard laboratory media and conditions. In this paper, we describe the expression, purification and characterization of a novel metagenomic thioesterase which was described to be involved in phenylacetic acid degradation (A. Sánchez-Reyes, R. Batista-García, G. Valdés-García E. Ortiz, L. Perezgasga, A. Zárate-Romero, N. Pastor, J. L. Folch-Mallol, A Family 13 thioesterase isolated from an activated sludge metagenome: insights into aromatic compounds metabolism, Proteins 85 (2017) 1222-1237). According to similarity and phylogenetic analyses, the enzyme seems to belong to an Actinobacterium. Nevertheless, after a process of denaturation and refolding, the protein expressed in E. coli was obtained in an active form. New data concerning the substrate preferences for this enzyme are presented which suggest that this thioesterase could be involved in breaking the ester bond in the CoA-linear acyl derivatives of the phenylacetic acetic pathway.
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Affiliation(s)
- Jorge Luis Folch-Mallol
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Av Universidad 1001, Colonia Chamilpa, Cuernavaca, 62209, Morelos, Mexico.
| | - Andrés Zárate
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Av Universidad 1001, Colonia Chamilpa, Cuernavaca, 62209, Morelos, Mexico
| | - Ayixón Sánchez-Reyes
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Av Universidad 1001, Colonia Chamilpa, Cuernavaca, 62209, Morelos, Mexico
| | - Isabel M López-Lara
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av Universidad 1001, Colonia Chamilpa, Cuernavaca, 62209, Morelos, Mexico
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Zhang H, Feng J, Chen S, Li B, Sekar R, Zhao Z, Jia J, Wang Y, Kang P. Disentangling the Drivers of Diversity and Distribution of Fungal Community Composition in Wastewater Treatment Plants Across Spatial Scales. Front Microbiol 2018; 9:1291. [PMID: 29967600 PMCID: PMC6015911 DOI: 10.3389/fmicb.2018.01291] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 05/28/2018] [Indexed: 12/17/2022] Open
Abstract
Activated sludge microbial community composition is a key bio-indicator of the sustainability of wastewater treatment systems. Therefore, a thorough understanding of the activated sludge microbial community dynamics is critical for environmental engineers to effectively manage the wastewater treatment plants (WWTPs). However, fungal communities associated with activated sludge have been poorly elucidated. Here, the activated sludge fungal community in 18 geographically distributed WWTPs was determined by using Illumina sequencing. The results showed that differences in activated sludge fungal community composition were observed among all WWTPs and also between oxidation ditch and anaerobic-anoxic-aerobic (A/A/O) systems. Ascomycota was the largest phyla, followed by Basidiomycota in all samples. Sporidiobolales and Pezizales were the most abundant order in oxidation ditch and A/A/O systems, respectively. The network analysis indicated cooperative and co-occurrence interactions between fungal taxa in order to accomplish the wastewater treatment process. Hygrocybe sp., Sporobolomyces sp., Rhodotorula sp., Stemphylium sp., Parascedosporium sp., and Cylindrocarpon sp., were found to have statistically significant interactions. Redundancy analysis revealed that temperature, total phosphorus, pH, and ammonia nitrogen were significantly affected the fungal community. This study sheds light on providing the ecological characteristics of activated sludge fungal communities and useful guidance for improving wastewater treatment performance efficiency.
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Affiliation(s)
- Haihan Zhang
- Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi’an University of Architecture and Technology, Xi’an, China
- Shaanxi Key Laboratory of Environmental Engineering, Xi’an University of Architecture and Technology, Xi’an, China
- Institute of Environmental Microbial Technology, Xi’an University of Architecture and Technology, Xi’an, China
| | - Ji Feng
- Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi’an University of Architecture and Technology, Xi’an, China
- Shaanxi Key Laboratory of Environmental Engineering, Xi’an University of Architecture and Technology, Xi’an, China
- Institute of Environmental Microbial Technology, Xi’an University of Architecture and Technology, Xi’an, China
| | - Shengnan Chen
- Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi’an University of Architecture and Technology, Xi’an, China
- Shaanxi Key Laboratory of Environmental Engineering, Xi’an University of Architecture and Technology, Xi’an, China
- Institute of Environmental Microbial Technology, Xi’an University of Architecture and Technology, Xi’an, China
| | - Baoqin Li
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science and Technology, Guangzhou, China
| | - Raju Sekar
- Department of Biological Sciences, Xi’an Jiaotong-Liverpool University, Suzhou, China
| | - Zhenfang Zhao
- Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi’an University of Architecture and Technology, Xi’an, China
- Shaanxi Key Laboratory of Environmental Engineering, Xi’an University of Architecture and Technology, Xi’an, China
- Institute of Environmental Microbial Technology, Xi’an University of Architecture and Technology, Xi’an, China
| | - Jingyu Jia
- Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi’an University of Architecture and Technology, Xi’an, China
- Shaanxi Key Laboratory of Environmental Engineering, Xi’an University of Architecture and Technology, Xi’an, China
- Institute of Environmental Microbial Technology, Xi’an University of Architecture and Technology, Xi’an, China
| | - Yue Wang
- Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi’an University of Architecture and Technology, Xi’an, China
- Shaanxi Key Laboratory of Environmental Engineering, Xi’an University of Architecture and Technology, Xi’an, China
- Institute of Environmental Microbial Technology, Xi’an University of Architecture and Technology, Xi’an, China
| | - Pengliang Kang
- Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi’an University of Architecture and Technology, Xi’an, China
- Shaanxi Key Laboratory of Environmental Engineering, Xi’an University of Architecture and Technology, Xi’an, China
- Institute of Environmental Microbial Technology, Xi’an University of Architecture and Technology, Xi’an, China
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Zhuo R, Yu H, Yuan P, Fan J, Chen L, Li Y, Ma F, Zhang X. Heterologous expression and characterization of three laccases obtained from Pleurotus ostreatus HAUCC 162 for removal of environmental pollutants. JOURNAL OF HAZARDOUS MATERIALS 2018; 344:499-510. [PMID: 29100130 DOI: 10.1016/j.jhazmat.2017.10.055] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Revised: 10/21/2017] [Accepted: 10/27/2017] [Indexed: 06/07/2023]
Abstract
Chlorophenols (CPs), nitrophenols (NPs), and sulfonamide antibiotics (SAs) are three types of environmental pollutants that are of great concern because of their prevalence and toxicity. In this study, three laccase isoenzymes obtained from Pleurotus ostreatus HAUCC 162 were heterologously expressed and characterized with respect to their ability to degrade CPs, NPs, and, SAs. The three recombinant laccases can efficiently degrade the three types of considered pollutants using a laccase-mediator system (LMS). Their specific efficiencies for the removal of 2NP, 3NP, 4NP, 4CP, 2,4-dichlorophenol (DCP), 2,6-DCP, sulfadiazine (SDZ), sulfamethazine (SMZ), and sulfamethoxazole (SMX) over 60min were 59.21%, 47.91%, 60.24%, 74.9%, 28.9%, 35.1%, 98.1%, 97.5%, and 97.8%, respectively. Based on the analysis of the oxidation products of the CPs, NPs, and SAs, pollutant removal pathways are proposed, namely, the production of 3-nitromuconate and 3-chloromuconate as the key intermediates of 4-NP and 2, 4-DCP; and oxidative coupling for the transformation of SDZ by LMS. The results of present work indicated the laccases could efficiently remove NPs, CPs, and SAs in LMS, which offers an opportunity to apply P. ostreatus HAUCC 162 laccase in the field of environmental biotechnology.
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Affiliation(s)
- Rui Zhuo
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Hongbo Yu
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Peng Yuan
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Jiahui Fan
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Longjiao Chen
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Yuan Li
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Fuying Ma
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China.
| | - Xiaoyu Zhang
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China.
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