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Multi-omics analyses reveal metabolic pathways of benzo[a]pyrene biodegradation under sole or mixed carbon sources
2023, International Biodeterioration and BiodegradationBiodegradation of pyrene by a novel strain of Castellaniella sp. Under denitrifying condition
2021, Journal of Environmental Chemical EngineeringCitation Excerpt :isolated six Gram-negative strains of bacteria from a petrochemical waste disposing site, they were capable of degrading acenaphthene, fluorene, phenanthrene, anthracene and pyrene by 70–100% in a period of 40 days of initial treatment. Previous researches also showed that some PHAs could be degraded under nitrate-reduction conditions, such as naphthalene [64,70,83], acenaphthene [84] and phenanthrene [64,83]. [85] isolated pyrene-degrading bacteria from contaminated freshwater sediment and soil under aerobic and nitrate-reducing conditions, which were identified as a Pseudomonas stutzeri, Pseudomonas fluorescens and Pseudomonas putida.
Plant-microbiome assisted and biochar-amended remediation of heavy metals and polyaromatic compounds ─ a microcosmic study
2019, Ecotoxicology and Environmental SafetyCitation Excerpt :It is also evident that the interactions between binary and ternary PAHs pairs sometimes involve competitive inhibition, which hinders their degradation. The presence of phenanthrene, for example, is reported to inhibit the degradation of pyrene (Han et al., 2013; McNally et al., 1999). In this study, although both the competitive inhibitor (phenanthrene and pyrene) were present in the medium, the quaternary mixture of PAHs were successfully degraded because of catabolic activities of C1 and C2 consortia.
The Effectiveness in the Removal of PAHs from Aqueous Solutions in Physical and Chemical Processes: A Review
2017, Polycyclic Aromatic CompoundsSubstrate interaction effects during pyrene biodegradation by Pseudomonas aeruginosa RS1
2017, Journal of Environmental Chemical EngineeringCitation Excerpt :The inhibitory effect of phenanthrene and fluoranthene on pyrene degradation by P. aeruginosa RS1 was possibly caused by competition for the same enzyme system as that involved in pyrene degradation. Inhibitory effect of fluoranthene on pyrene degradation has been widely reported for various strains of both Pseudomonas and Mycobacterium, however both enhancement and inhibition has been reported in the presence of phenanthrene [9,13,31,33]. Phenanthrene serving as a growth substrate has been reported to cause cometabolic degradation of pyrene and fluoranthene [11].
Comprehensive review on toxicity of persistent organic pollutants from petroleum refinery waste and their degradation by microorganisms
2017, ChemosphereCitation Excerpt :Main mechanism for aerobic metabolism of PAHs in bacteria is the initial oxidation of benzene ring by dioxygenase enzymes which forms cis-dihydrodiols (Peng et al., 2008; Waigi et al., 2015; Varjani and Upasani, 2017a). These dihydrodiols are then dehydrogenated to form dihydroxylated intermediates, which can then be further metabolized via catechols to carbon dioxide and water (McNally et al., 1991; Rockne and Strand, 1998; Peng et al., 2008; Varjani and Upasani, 2017a). The metabolic pathways and enzymatic reactions involved in microbial degradation of naphthalene have been schematically represented in Fig. 3.