Microbial degradation of dibenzofuran, fluorene, and dibenzo-p-dioxin by Staphylococcus auriculans DBF63

Monna, L.; Omori, Toshio; Kodama, Tohru

doi:10.1128/aem.59.1.285-289.1993

Cited by 159 publications

(46 citation statements)

References 16 publications

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“…However, the other degradation products in this study have not previously been identified as metabolites of P. ostreatus. Both 4-hydroxy-9fluorenone and 4-hydroxyperinaphthenone have been identified as dead-end products during bacterial degradation of fluorene [34] and pyrene [31], respectively. On the other hand, 4oxapyrene-5-one has previously been identified in diesel exhaust [30], where it probably was a product of chemical/ photochemical oxidation of pyrene.…”

Section: Discussionmentioning

confidence: 99%

Incomplete Degradation of Polycyclic Aromatic Hydrocarbons in Soil Inoculated With Wood-Rotting Fungi and Their Effect on the Indigenous Soil Bacteria

Andersson¹,

Lundstedt²,

Tornberg³

et al. 2003

Environ Toxicol Chem

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Soil artificially contaminated with fluorene, phenanthrene, pyrene, and benz[a]anthracene was inoculated with the wood-rotting fungi Plrurotus ostreatus and Antrodia vaillantii. During 12 weeks of incubation, polycyclic aromatic hydrocarbon (PAH) degradation and the formation of persistent degradation products were monitored by chemical analysis. In addition, the effect on the indigenous soil bacteria was studied by plate count techniques and by measuring the concentration of bacteria-specific phospholipid fatty acids (PLFAs). In both soils inoculated with fungi, the PAH degradation was enhanced compared to the control soil without fungi. The white-rot fungus P. ostreatus accelerated the degradation rate radically the first weeks, while the effect of the brown-rot fungus was more pronounced at later stages during the 12-week study. In a soil with no amendments, the final degradation result was similar to that in the soil with added fungi, although the degradation pattern for the individual PAHs was different. Furthermore, the degradation by P. ostreatus was accompanied by an accumulation of PAH metabolites, that is, 9-fluorenone, benz[a]anthracene-7,12-dione, and two compounds identified as 4-hydroxy-9-fluorenone and 4-oxapyrene-5-one, that was not seen in the other soils. The inoculation with the white-rot fungus also had a large negative effect on the indigenous soil bacteria. This could be an important drawback of using the white-rot fungus P. ostreatus in soil bioremediation since a sequential fungal-bacterial degradation probably is needed for a complete degradation of PAHs in soil. In the soil inoculated with A. vaillantii, on the other hand, no metabolites accumulated, and no negative effects were observed on the indigenous microorganisms.

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Section: Discussionmentioning

confidence: 99%

Incomplete Degradation of Polycyclic Aromatic Hydrocarbons in Soil Inoculated With Wood-Rotting Fungi and Their Effect on the Indigenous Soil Bacteria

Andersson¹,

Lundstedt²,

Tornberg³

et al. 2003

Environ Toxicol Chem

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“…Microbial reductive dechlorination of polychlorinated dibenzo-p-dioxins and dibenzofurans (CDD/Fs) in sediments is an important environmental process, because it has the potential of decreasing the toxicity of CDD/Fs if lateral chlorines are removed (Ballerstedt et al, 1997;Vargas et al, 2001;Gruden et al, 2003;Fennell et al, 2004;Ahn et al, 2005Ahn et al, , 2007Yoshida et al, 2005;Liu & Fennell, 2008). Dechlorination may also be advantageous because lesser chlorinated congeners of CDD/ Fs are more susceptible to subsequent aerobic degradation (Fortnagel et al, 1990;Strubel et al, 1991;Happe et al, 1993;Monna et al, 1993;Wittich, 1998). Dechlorination of CDD/Fs is a slow process with a time frame of months or years.…”

Section: Introductionmentioning

confidence: 99%

Biostimulation and bioaugmentation to enhance dechlorination of polychlorinated dibenzo-p-dioxins in contaminated sediments

Ahn¹,

Liu²,

Fennell³

et al. 2008

FEMS Microbiology Ecology

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Dechlorination of spiked 1,2,3,4-tetrachlorodibenzo-p-dioxin (1,2,3,4-TeCDD) was investigated in sediment microcosms from three polychlorinated dibenzo-p-dioxin and dibenzofuran (CDD/F)-contaminated sites: River Kymijoki, Finland; Gulf Island Pond, Maine; and Lake Roosevelt, Washington. Dechlorination was stimulated by addition of electron donor and halogenated priming compounds, and bioaugmentation by a mixed culture containing Dehalococcoides ethenogenes strain 195. Amendment with 1,2,3,4-tetrachlorobenzene (1,2,3,4-TeCB) promoted rapid dechlorination of 1,2,3,4-TeCDD to 2-monochlorodibenzo-p-dioxin (2MCDD) in Gulf Island Pond and River Kymijoki sediments, however, only slow dechlorination to 1,4-dichlorodibenzo-p-dioxin was observed in Lake Roosevelt sediments. The dechlorination pathway in 1,2,3,4-TeCB-amended microcosms proceeded mainly via 1,3-dichlorodibenzo-p-dioxin, with less production of 2,3-dichlorodibenzo-p-dioxin in comparison with other treatments. Microbial community analyses indicated that Dehalococcoides-like bacteria were enriched with 1,2,3,4-TeCB. Quantitative real-time PCR analysis of Dehalococcoides-specific 16S rRNA genes and the D. ethenogenes strain 195 dehalogenase gene, tceA, showed at least an order of magnitude higher gene copy numbers in the bioaugmented than in the nonbioaugmented microcosms. An active-dechlorinating population is present in the River Kymijoki and biostimulation may enhance both native Dehalococcoides spp. and the bioaugmented D. ethenogenes strain 195.

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“…The great environmental concern of PAHs is due to their toxic, mutagenic, and carcinogenic properties (Monna et al, 1993). The use of analytical chemistry techniques as the only tool in the evaluation of risk of contaminated soils should be questioned and the presence of complex mixtures of xenobiotics and natural compounds should be considered.…”

Section: Introductionmentioning

confidence: 99%

Ecotoxicological monitoring of remediation in a coke oven soil

Mendonça

Picado

2002

Environmental Toxicology

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Assessment of contaminated sites is usually based on chemical analyses of hazardous compounds in soil. This is enough either to assess the environmental hazard of contaminated soil nor to evaluate the efficiency of applied remediation techniques. Information on the bioavailability of complex mixtures of xenobiotics and degradation products cannot be provided by chemical analytical data, but results from bioassays can integrate the effects of pollutants in mixtures. In the preservation of human health and environmental quality, it is important to evaluate ecotoxicological effects of contaminated industrial soils to complement the techniques of analytical chemistry. The monitoring of a coke oven soil and the evaluation of the landfarming treatment technique, conducted on-site in a pilot scale installation, was done by a battery of ecotoxicological tests: acute, chronic, and genotoxicity tests. Contaminated soil samples revealed toxic effects for different species mainly due to high concentrations of polycyclic aromatic hydrocarbons (PAHs). After landfarming treatment, soil samples presented significant reduction in toxicity, confirming the effectiveness of the landfarming process pointed out by a significant reduction in low molecular weight PAH concentrations. Comparative analysis of the different ecotoxicological tests allowed the establishment and validation of a more suitable procedure for the monitoring of PAH contaminated soils.

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Microbial degradation of dibenzofuran, fluorene, and dibenzo-p-dioxin by Staphylococcus auriculans DBF63

Cited by 159 publications

References 16 publications

Incomplete Degradation of Polycyclic Aromatic Hydrocarbons in Soil Inoculated With Wood-Rotting Fungi and Their Effect on the Indigenous Soil Bacteria

Incomplete Degradation of Polycyclic Aromatic Hydrocarbons in Soil Inoculated With Wood-Rotting Fungi and Their Effect on the Indigenous Soil Bacteria

Biostimulation and bioaugmentation to enhance dechlorination of polychlorinated dibenzo-p-dioxins in contaminated sediments

Ecotoxicological monitoring of remediation in a coke oven soil

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