Biodegradation of polycyclic aromatic hydrocarbons (PAHs) by native microflora and combinations of white-rot fungi in a coal-tar contaminated soil

Canet, Rodolfo; Birnstingl, J.; Malcolm, Don; Lopez-Real, Joseph; Beck, Angus J.

doi:10.1016/s0960-8524(00)00093-6

Cited by 164 publications

(66 citation statements)

References 13 publications

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“…The amendment of nonbioaugmented soil (control microcosm) with maize stalks might be regarded as a biostimulation approach. The observed increase in the viable heterotrophic bacterial concentration in the amended control microcosm confirmed this hypothesis and is in agreement with other studies (13,33). On the other hand, fungal growth in the amended control microcosm was not significantly stimulated, as inferred by the undetectable ergosterol levels at the final time point (30 days).…”

Section: Discussionsupporting

confidence: 92%

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

163

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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: Discussionsupporting

confidence: 92%

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

163

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“…FLT PHE OC-normalised sorption coefficient Log conclusion is supported by the research of Canet et al (2001) who suggested that in soil amended by OM system, the use of the autochthonous microflora, with no introduction of foreign microorganisms, offered the greatest potential for PAH degradation. Other evidence has shown that in the experiments with soil from a contaminated site , PAH degradation was most effectively stimulated after addition of compost in comparison to the addition of fertilizer or degrading bacteria.…”

Section: Day=0mentioning

confidence: 83%

Remediation of polycyclic aromatic hydrocarbon (PAH) contaminated soil through composting with fresh organic wastes

Zhang

Zhu

Houot

et al. 2011

Environ Sci Pollut Res

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Introduction Composting may enhance bioremediation of PAH-contaminated soils by providing organic substrates that stimulate the growth of potential microbial degraders. However, the influence of added organic matter (OM) together with the microbial activities on the dissipation of PAHs has not yet been fully assessed. Materials and methods An in-vessel composting-bioremediation experiment of a contaminated soil amended with fresh wastes was carried out. Four different experimental conditions were tested in triplicate during 60 days using laboratory-scale reactors: treatment S (100% soil), W (100% wastes), SW (soil/ waste mixture), and SWB (soil/waste mixture with inoculation of degrading microorganisms). Results and discussion A dry mass loss of 35±5% was observed in treatments with organic wastes during composting in all the treatments except treatment S. The dissipation of the 16 USEPA-listed PAHs was largely enhanced from no significant change to 50.5±14.8% (for SW)/63.7±10.0% (for SWB). More obvious dissipation was observed when fresh wastes were added at the beginning of composting to the contaminated soil, without significant difference between the inoculated and non-inoculated treatments. Phospholipid fatty acid (PLFA) profiling showed that fungi and G-bacteria dominated at the beginning of experiment and were probably involved in PAH dissipation. Subsequently, greater relative abundances of G+bacteria were observed as PAH dissipation slowed down. Conclusions The results suggest that improving the composting process with optimal organic compositions may be a feasible remediation strategy in PAH-contaminated soils through stimulation of active microbial populations.

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“…Introduction of such fungi requires effective growth and competition with these native populations [54,55]. Additionally the bioremedial plant and microbial interaction should be able to secrete the necessary enzymes into the growth media matrix to enhance degradation of Glyphosate, molecules that they would otherwise be unable to incorporate across cell walls [26]. Therefore, the proposed mechanism of bacterial degradation here can be described by two ways: one is as the sole carbon energy source; the other is by co-metabolism or co-oxidation.…”

Section: Fig 5-isolated Bacteria From Rhizosphere Regions Bacillus Mmentioning

confidence: 99%

“…Several fungi and bacteria able to degrade pesticides were isolated from the maize rhizosphere. Successful phytoremediation of high concentrations of the pesticides alachlor and metachlor was demonstrated using an integrated strategy: maize plants and a chloracetamide-detoxyfying rhizobacteria, Pseudomonas fluorescens strain UA5-40 [26,27]. Microbial degradation is an important step in the disappearance and, in most cases detoxification of pesticides.…”

Section: Introductionmentioning

confidence: 99%

Phyto-Microbial Degradation of Glyphosate in Riyadh Area

Abdel-Megeed¹,

MW²,

HO³

et al. 2013

Int J of Micr Res

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Biodegradation of polycyclic aromatic hydrocarbons (PAHs) by native microflora and combinations of white-rot fungi in a coal-tar contaminated soil

Cited by 164 publications

References 13 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

Remediation of polycyclic aromatic hydrocarbon (PAH) contaminated soil through composting with fresh organic wastes

Phyto-Microbial Degradation of Glyphosate in Riyadh Area

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