Mycoremediation of PCBs by Pleurotus ostreatus: Possibilities and Prospects

Chun, Se Chul; Muthu, Manikandan; Hasan, Nazim; Tasneem, Shadma; Gopal, Judy

doi:10.3390/app9194185

Cited by 36 publications

(11 citation statements)

References 66 publications

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“…Polychlorinated biphenyls are organochlorine compounds consisting of a biphenyl core substituted by one to 10 chlorine atoms with 209 possible congeners differing in the number of chlorine atoms and their position on the biphenyl core [ 1 ]. These synthetic compounds have been largely used in industrial products due to their thermal and chemical stability, dielectric properties and low flammability [ 1 , 2 ]. PCBs are among the most persistent pollutant groups widespread in all ecosystems [ 3 , 4 , 5 , 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Potentiality of Native Ascomycete Strains in Bioremediation of Highly Polychlorinated Biphenyl Contaminated Soils

et al. 2021

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Polychlorinated biphenyls (PCBs) are organic pollutants that are harmful to environment and toxic to humans. Numerous studies, based on basidiomycete strains, have reported unsatisfactory results in the mycoremediation of PCB-contaminated soils mainly due to the non-telluric origin of these strains. The abilities of a five-Ascomycete-strain consortium in the mycoremediation of PCB-polluted soils and its performance to restore their sound functioning were investigated using mesocosm experiments associated with chromatography gas analysis and enzymatic activity assays. With the soil H containing 850 ppm PCB from which the strains had been isolated, a significant PCB depletion of 29% after three months of treatment was obtained. This led to an important decrease of PCBs from 850 to 604 ppm. With the soil L containing 36 ppm PCB, biodegradation did not occur. In both soils, the fungal biomass quantified by the ergosterol assay, did not increase at the end of the treatment. Biodegradation evidenced in the soil H resulted in a significantly improved stoichiometry of N and P acquiring enzymatic activities. This unprecedented study demonstrates that the native Ascomycetes display remarkable properties for remediation and restoration of functioning of the soil they originated from paving the way for greater consideration of these strains in mycoremediation.

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Section: Introductionmentioning

confidence: 99%

Potentiality of Native Ascomycete Strains in Bioremediation of Highly Polychlorinated Biphenyl Contaminated Soils

et al. 2021

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“…Compared with most bacterial degradative enzymes, the intra-and extracellular enzymatic systems of white rot fungi (WRF) enable them to degrade several classes of organic pollutants such as polychlorinated biphenyls [18], polycyclic aromatic hydrocarbons (PAHs) [19,20], endocrine disruptors such as bisphenol A, 17 β-estradiol, or triclosan (among others) [21] and a wide variety of pharmaceutical compounds [22][23][24][25]. The ability of some ligninolytic fungi to degrade TCE in a liquid medium yielding less toxic intermediates than bacteria has been investigated in addition to their ability to mineralize it, as shown by research using T. versicolor [26], Phanerochaete chrysosporium [27], Ganoderma lucidum, and Irpex lacteus [28].…”

Section: Introductionmentioning

confidence: 99%

Mycoremediation of Soils Polluted with Trichloroethylene: First Evidence of Pleurotus Genus Effectiveness

et al. 2021

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Trichloroethylene (TCE) is a proven carcinogenic chlorinated organic compound widely used as a solvent in industrial cleaning solutions; it is easily found in the soil, air, and water and is a hazardous environmental pollutant. Most studies have attempted to remove TCE from air and water using different anaerobic bacteria species. In addition, a few have used white-rot fungi, although there are hardly any in soil. The objective of the present work is to assess TCE removal efficiency using two species of the genus Pleurotus that have not been tested before: Pleurotus ostreatus and Pleurotus eryngii, growing on a sandy loam soil. These fungi presented different intra- and extracellular enzymatic systems (chytochrome P450 (CYP450), laccase, Mn peroxidase (MnP)) capable of aerobically degrading TCE to less harmful compounds. The potential toxicity of TCE to P. ostreatus and P. eryngii was firstly tested in a TCE-spiked liquid broth (70 mg L−1 and 140 mg L−1) for 14 days. Then, both fungi were assessed for their ability to degrade the pollutant in sandy loam soil spiked with 140 mg kg−1 of TCE. P. ostreatus and P. eryngii improved the natural dissipation of TCE from soil by 44%. Extracellular enzymes were poorly expressed, but mainly in the presence of the contaminant, in accordance with the hypothesis of the involvement of CYP450.

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“…2005; Chun et al . 2019), the metabolism of high chlorinated congeners can lead to the accumulation of toxic dead‐end metabolites (e.g. chlorobenzoic acids) (Passatore et al .…”

Section: Introductionmentioning

confidence: 99%

Comparative study of single cultures and a consortium of white rot fungi for polychlorinated biphenyls treatment

et al. 2021

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Aims To evaluate the mycoremediation of polychlorinated biphenyls (PCBs) by either single cultures or binary consortia of Pleurotus pulmonarius LBM 105 and Trametes sanguinea LBM 023. Methods and Results PCBs tolerance, removal capacity, toxicity reduction and ligninolytic enzyme expression were assessed when growing single culture and binary consortium of fungus in 217 mg l−1 of a technical mixture of Aroclor 1242, 1254 and 1260 in transformer oil. A decrease in tolerance and variation in ligninolytic enzyme secretion were observed in PCB‐amended solid media. Pleurotus pulmonarius LBM 105 mono‐culture was able to remove up to 95·4% of PCBs, whereas binary consortium and T. sanguinea LBM 023 could biodegrade about 55% after 24 days. Significant detoxification levels were detected in all treatments by biosorption mechanism. Conclusions Pleurotus pulmonarius LBM 105 in single culture had the best performance regarding PCBs biodegradation and toxicity reduction. Ligninolytic enzyme secretion changed in co‐culture. Significance and Impact of the Study The evaluation of PCBs bioremediation effectiveness of basidiomycetes consortium in terms of PCB removal, toxicity and ligninolytic enzyme production to unravel the differences between using individual cultures or consortium has not been reported. The results from this study enable the selection of P. pulmonarius LBM 105 mono‐culture to bioremediate PCBs as it showed higher efficiency compared to binary consortium with T. sanguinea LBM 023 for potential decontamination of PCB‐contaminated transformer oil.

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Mycoremediation of PCBs by Pleurotus ostreatus: Possibilities and Prospects

Cited by 36 publications

References 66 publications

Potentiality of Native Ascomycete Strains in Bioremediation of Highly Polychlorinated Biphenyl Contaminated Soils

Potentiality of Native Ascomycete Strains in Bioremediation of Highly Polychlorinated Biphenyl Contaminated Soils

Mycoremediation of Soils Polluted with Trichloroethylene: First Evidence of Pleurotus Genus Effectiveness

Comparative study of single cultures and a consortium of white rot fungi for polychlorinated biphenyls treatment

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