Benzo(a)pyrene metabolites formed by the action of yeast cytochrome P‐450/P‐448

Wiseman, Alan; Woods, Leonard F. J.

doi:10.1002/jctb.503290508

Cited by 35 publications

(1 citation statement)

References 12 publications

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“…Several studies revealed the degradation of PAH to carbon and energy by different microorganisms that belong to different genera including Marinobacter, Cycloclasticus, Pseudoalteromonas a n d Neptunomonas, Sphingomonas, Pseudomonas, Burkholderia and Mycobacterium [12][13][14][15][16][17][18][19][20][21]. Others [6,39] showed benzo(a)pyrene degradation by fungi species: Saccharomyces cerevisiae, Neurospora crassa, Cunninghamella bainieri with further production of trans-7,8-dihydroxy-7,8-dihydrobenzo(a)pyrene, 3hydroxybenzo(a)pyrene and 9-hydroxybenzo(a)pyrene.…”

Section: Biological Treatment Of Pahmentioning

confidence: 99%

Paenibacillus Naphthalenovorans Biofilms Interact with and Degrade Naphthalene as Observed using Various Microscopy Techniques

Aliyeva

Petersen

Park

et al. 2019

J. Environ. Sci. Eng. Technol.

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The role of Paenibacillus naphthalenovorans biofilm formation in degrading a model polycyclic aromatic hydrocarbon (PAH) (naphthalene) was investigated via an array of microscopy techniques. The early stages of biofilm formation near a naphthalene crystal that was deposited on a glass coverslip were assayed qualitatively by growing the biofilms in batch bioreactors using either a rich carbon medium or a medium which contained naphthalene as a lone carbon source. Our results demonstrated that the biofilm selectively grew immediately adjacent to the edge of the PAH crystal, leading to a biofilm that facilitated the PAH degradation. Moreover, because PAH compounds are often found in capillary spaces in the subsurface, quantitative capillary-experiments were executed to evaluate the ability of P. naphthalenovorans biofilms in the degradation of a capillary-bound PAH contaminant. These capillary-experiments demonstrated that a biofilm forms at the pore’s opening, and that, when compared to a diffusion process in a liquid medium, this biofilm substantially increased the rate at which the PAH is cleared from the pore. These results provide an enhanced understanding of the means of biofilm adhesion and development in a presence of the model PAH compound investigated. Moreover, the work presented here demonstrates approaches not used before for monitoring biofilm formation.

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Section: Biological Treatment Of Pahmentioning

confidence: 99%

Paenibacillus Naphthalenovorans Biofilms Interact with and Degrade Naphthalene as Observed using Various Microscopy Techniques

Aliyeva

Petersen

Park

et al. 2019

J. Environ. Sci. Eng. Technol.

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Literature overview: Microbial metabolism of high molecular weight polycyclic aromatic hydrocarbons

Husain

2008

Remediation Journal

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High molecular weight polycyclic aromatic hydrocarbons (HMW PAHs) increase in hydrophobicity with increases in their molecular weight and ring angularity. Microbial strategies to deal with PAH hydrophobicity include biofilm formation, enzyme induction, and biosurfactants, the effect of which is variable on PAH metabolism depending on the surfactant type and concentration, substrate, and microbial strain(s). Aerobic HMW PAH metabolism proceeds via mineralization, partial degradation, and cometabolic transformations. Generally, bacteria and nonlignolytic fungi metabolize PAHs via initial PAH ring oxidation by dioxygenases to form cis-dihydrodiols, which are transformed to catechol compounds by dehydrogenases and other mono-and dioxygenases to substituted catechol and noncatechol compounds, all ortho-or metacleaved and further oxidized to simpler compounds. However, lignolytic fungi form quinones and acids to CO 2 . This review discusses the pathways for HMW PAH microbial metabolism. O

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Mutagen Testing of Agricultural Chemicals with Yeast

Eckardt

Borstel

1985

Basic and Applied Mutagenesis

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Benzo(a)pyrene metabolites formed by the action of yeast cytochrome P‐450/P‐448

Cited by 35 publications

References 12 publications

Paenibacillus Naphthalenovorans Biofilms Interact with and Degrade Naphthalene as Observed using Various Microscopy Techniques

Paenibacillus Naphthalenovorans Biofilms Interact with and Degrade Naphthalene as Observed using Various Microscopy Techniques

Literature overview: Microbial metabolism of high molecular weight polycyclic aromatic hydrocarbons

Mutagen Testing of Agricultural Chemicals with Yeast

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