Accumulation and degradation of dead-end metabolites during treatment of soil contaminated with polycyclic aromatic hydrocarbons with five strains of white-rot fungi

Andersson, Bo; Henrysson, Tomas

doi:10.1007/s002530050875

Cited by 95 publications

(41 citation statements)

References 31 publications

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“…strain DABAC 3, unlike the case with the other isolates. In this respect, it should be pointed out that several fungal species commonly used for remediation purposes have been found to be unable to degrade ketone derivatives of polyaromatic hydrocarbons (1). In the specific case of 9,10-anthracenedione, its degradation has been shown to often be the rate-limiting step in the mineralization of anthracene (50), and this PAH degradation intermediate was found to accumulate as a dead-end metabolite (2).…”

Section: Discussionmentioning

confidence: 99%

Role of Autochthonous Filamentous Fungi in Bioremediation of a Soil Historically Contaminated with Aromatic Hydrocarbons

D’Annibale

Rosetto²,

Leonardi

et al. 2006

Appl Environ Microbiol

153

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Nine fungal strains isolated from an aged and heavily contaminated soil were identified and screened to assess their degradative potential. Among them, Allescheriella sp. strain DABAC 1, Stachybotrys sp. strain DABAC 3, and Phlebia sp. strain DABAC 9 were selected for remediation trials on the basis of Poly R-478 decolorization associated with lignin-modifying enzyme (LME) production. These autochthonous fungi were tested for the abilities to grow under nonsterile conditions and to degrade various aromatic hydrocarbons in the same contaminated soil. After 30 days, fungal colonization was clearly visible and was confirmed by ergosterol determination. In spite of subalkaline pH conditions and the presence of heavy metals, the autochthonous fungi produced laccase and Mn and lignin peroxidases. No LME activities were detected in control microcosms. All of the isolates led to a marked removal of naphthalene, dichloroaniline isomers, o-hydroxybiphenyl, and 1,1-binaphthalene. Stachybotrys sp. strain DABAC 3 was the most effective isolate due to its ability to partially deplete the predominant contaminants 9,10-anthracenedione and 7H-benz[DE]anthracen-7-one. A release of chloride ions was observed in soil treated with either Allescheriella sp. strain DABAC 1 or Stachybotrys sp. strain DABAC 3, suggesting the occurrence of oxidative dehalogenation. The autochthonous fungi led to a significant decrease in soil toxicity, as assessed by both the Lepidium sativum L. germination test and the Collembola mortality test.

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Section: Discussionmentioning

confidence: 99%

Role of Autochthonous Filamentous Fungi in Bioremediation of a Soil Historically Contaminated with Aromatic Hydrocarbons

D’Annibale

Rosetto²,

Leonardi

et al. 2006

Appl Environ Microbiol

153

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“…Considering the rapidity of enzymatic catalysis in liquid medium, the soil remediation term was set at only 10 days, which was much shorter than existing bioremediation practices. 26,27) A mild temperature of 30 • C was set as the incubation temperature. The results showed that laccase was effective in removing anthracene, benzo[a]pyrene and benzo [a]anthracene, but failed to degrade other PAHs significantly compared to the control (Table 1).…”

Section: Effect Of Mediator On Enzymatic Catalysismentioning

confidence: 99%

Optimization of Laccase-mediated Benzo[a]pyrene Oxidation and the Bioremedial Application in Aged Polycyclic Aromatic Hydrocarbons-contaminated Soil

Lin

Yin

et al. 2010

JOURNAL OF HEALTH SCIENCE

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Laccase is a polyphenol oxidase with the ability to oxidize a broad range of persistent organic pollutants, including benzo[a]pyrene, the most carcinogenic, mutagenic and teratogenic polycyclic aromatic hydrocarbons (PAHs). In this study, the reaction conditions for benzo [a]pyrene oxidation by laccase from Trametes versicolor were optimized in a liquid medium by a series of single factor experiments. The maximal benzo[a]pyrene oxidation rate was observed at 40• C, pH 4, 10% of acetonitrile and an incubation time of more than 24 hr, and the benzo[a]pyrene oxidation was enhanced significantly by the addition of a mediator, 2,2-azino-bis-(3-ethylbenzothiazoline-6-sulfonicacid) (ABTS). Laccase was also applied to aged PAHs polluted soil to examine the efficiency of enzymatic bioremediation. The results showed that the enzyme was still effective in the degradation of anthracene, benzo[a]pyrene and benzo [a]anthracene in soil. Moreover, the degradation rate of most PAHs increased by the addition of ABTS. Our results indicated that the bioremediation of PAHs contaminated soil using laccase is feasible but a suboptimal pH might be a limiting factor in the enzymatic treatment of soil.

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“…The results suggest that recalcitrant dyes, like other organopollutants, can be removed from the soil environment by the action of ligninolytic fungi (cf. Andersson and Henrysson 1996;Novotny et al 1999;etc.). The study demonstrates that effective dye degraders applicable to remediation of freshwater, seawater and soil environments contaminated with recalcitrant dyes can be screened from among unknown strains of terrestrial and marine fungal organisms.…”

Section: Dye Degradation In Soilmentioning

confidence: 99%

“…lacteus to degrade dyes in soil was tested using RBBR at 150 |ig/g 1 Cultures were incubated at 22°C for 6 weeks Decolorization is expressed as a number of days necessary for complete decolorization of the plate, P, partial decolorization after 6 weeks; -, no decolorization, 2 DW, GPY medium based on deionized water, * SW, GPY medium based on artificial seawater as the model dye. The tyndalized, RBBR-spiked soil was inoculated by mixing with freshly prepared, straw-grown fungal inoculum and the dye removal was detected in time.…”

Section: Dye Degradation In Soilmentioning

confidence: 99%

Screening of Fungal Strains for Remediation of Water and Soil Contaminated with Synthetic Dyes

Novotný

Rawal

Bhatt

et al. 2003

The Utilization of Bioremediation to Reduce Soil Contamination: Problems and Solutions

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Using Remazol Brilliant Blue R (RBBR), strains of terrestrial white rot (WRF) and marine fungi (MF) were screened for efficient decolorization. Dye degradation potential of selected strains was studied with chemically different dyes (azo, anthraquinone, heterocyclic, triphenylmethane). Irpex lacteus and Pleurotus ostreatus (WRF) efficiently degraded dyes from all groups whereas less efficient and selective degradations were observed with Dactylospora haliotrepha and Aspergillus ustus (MF). Seawater salinity often reduced decolorization efficiency of WRF but increased decolorization ability of MF. In soil /. lacteus removed 77 % of RBBR used at 150 |ig/g within 6 weeks. The work presents ftingi as suitable candidates to be applied to re-mediation of dye-contaminated water and soil.

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Accumulation and degradation of dead-end metabolites during treatment of soil contaminated with polycyclic aromatic hydrocarbons with five strains of white-rot fungi

Cited by 95 publications

References 31 publications

Role of Autochthonous Filamentous Fungi in Bioremediation of a Soil Historically Contaminated with Aromatic Hydrocarbons

Role of Autochthonous Filamentous Fungi in Bioremediation of a Soil Historically Contaminated with Aromatic Hydrocarbons

Optimization of Laccase-mediated Benzo[a]pyrene Oxidation and the Bioremedial Application in Aged Polycyclic Aromatic Hydrocarbons-contaminated Soil

Screening of Fungal Strains for Remediation of Water and Soil Contaminated with Synthetic Dyes

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