Environmental aspects of PAH biodegradation

Shuttleworth, Kay L.; Cerniglia, Carl E.

doi:10.1007/bf02787927

Cited by 233 publications

(133 citation statements)

References 41 publications

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“…In fact, its roots provide excellent attachment locations, steady redox conditions, and a steady food supply of exudates consisting of organic acids, enzymes, amino acids, and complex carbohydrates (1). Further, presence of high levels of phenolic compounds in root exudates is known (6) to induce bacterial degradation pathways (27). In this study, four Pertaining to the fact that all four were rhizosphere isolates with PAH degrading abilities, their potential may be exploited for bioremediation as also previously described by coating the rhizobacteria on Barmultra seeds or seedlings (14).…”

Section: Resultsmentioning

confidence: 99%

Biodegradation of naphthalene and anthracene by chemo-tactically active rhizobacteria of populus deltoides

Bisht¹,

Pandey²,

Sood³

et al. 2010

Braz. J. Microbiol.

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Several naphthalene and anthracene degrading bacteria were isolated from rhizosphere of Populus deltoides, which were growing in non-contaminated soil. Among these, four isolates, i.e. Kurthia sp., circulans SBA12, and M. varians SBA8 degraded 85.3 %, 95.8 % and 86.8 % of naphthalene respectively after 6 days of incubation as determined by HPLC analysis. Micrococcus varians, Deinococcus radiodurans and

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Section: Resultsmentioning

confidence: 99%

Biodegradation of naphthalene and anthracene by chemo-tactically active rhizobacteria of populus deltoides

Bisht¹,

Pandey²,

Sood³

et al. 2010

Braz. J. Microbiol.

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“…In recent years, the biodegradation of PAHs has received considerable attention and a variety of micro-organisms have been reported to play important roles in the process (Pothuluri & Cerniglia, 1994;Shuttleworth & Cerniglia, 1995;Kanaly & Harayama, 2000;Habe & Omori, 2003;Tortella et al, 2005). Bioremediation technologies have increasingly been proposed to decontaminate PAH-contaminated sites (Harayama, 1997;Samanta et al, 2002;Parrish et al, 2004;Vinas et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

A novel degradation pathway in the assimilation of phenanthrene by Staphylococcus sp. strain PN/Y via meta-cleavage of 2-hydroxy-1-naphthoic acid: formation of trans-2,3-dioxo-5-(2′-hydroxyphenyl)-pent-4-enoic acid

2007

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Staphylococcus sp. strain PN/Y, capable of utilizing phenanthrene as a sole source of carbon and energy, was isolated from petroleum-contaminated soil. In the degradation of phenanthrene by strain PN/Y, various metabolites, isolated and identified by a combination of chromatographic and spectrometric analyses, revealed a novel phenanthrene assimilation pathway involving 2-hydroxy-1-naphthoic acid. Metabolism of phenanthrene was initiated by the dioxygenation on the 1,2-position of phenanthrene followed by meta-cleavage of phenanthrene-1,2-diol, leading to 2-hydroxy-1-naphthoic acid, which was then processed via a novel meta-cleavage pathway, leading to the formation of trans-2,3-dioxo-5-(29-hydroxyphenyl)-pent-4-enoic acid and subsequently to salicylic acid. In the lower pathway, salicylic acid was transformed to catechol, which was then metabolized by catechol-2,3-dioxygenase to 2-hydroxymuconaldehyde acid, ultimately forming TCA cycle intermediates. The catabolic genes involved in phenanthrene degradation were found to be plasmid-encoded. This detailed study of polycyclic aromatic hydrocarbon (PAH) metabolism by a Gram-positive species involving a unique ring-cleavage dioxygenase in a novel phenanthrene degradation pathway provides a new insight into the microbial degradation of PAHs. INTRODUCTIONPolycyclic aromatic hydrocarbons (PAHs) constitute a group of priority environmental pollutants, which are ubiquitous contaminants in soils and sediments and are of environmental concern because of their toxic, mutagenic and/or carcinogenic effects (Mastrangelo et al., 1996;Marston et al., 2001;Xue & Warshawsky, 2005). In recent years, the biodegradation of PAHs has received considerable attention and a variety of micro-organisms have been reported to play important roles in the process (Pothuluri & Cerniglia, 1994;Shuttleworth & Cerniglia, 1995;Kanaly & Harayama, 2000;Habe & Omori, 2003;Tortella et al., 2005). Bioremediation technologies have increasingly been proposed to decontaminate PAH-contaminated sites (Harayama, 1997;Samanta et al., 2002;Parrish et al., 2004;Vinas et al., 2005).Phenanthrene, a PAH with three condensed rings fused in angular fashion, has a 'bay-region' and a 'K-region' and is often used as a model substrate for studies on the metabolism of carcinogenic PAHs. Over the last 60 years, a number of studies on phenanthrene degradation by several Gram-negative and Gram-positive bacterial species have been reported (Evans et al., 1965;Kiyohara et al., 1976Kiyohara et al., , 1982Kiyohara & Nagao, 1978;Barnsley, 1983;Gibson & Subramanian, 1984;Houghton & Shanley, 1994;Adachi et al., 1999;Samanta et al., 1999), where various pathways and metabolic diversity involved in phenanthrene degradation were documented. In general, the metabolic pathway is initiated by the double hydroxylation of the bay-region of phenanthrene by a dioxygenase enzyme to form cis-3,4-phenanthrenedihydrodiol. The resultant dihydrodiol is then converted by the action of dihydrodiol dehydrogenase to 3,4-dihydroxyphenanthrene, which und...

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“…As the number of contaminated sites around the world rises, there will be an increasing need for site evaluation comprising the assessment of chemical risk and the chances to achieve natural or engineered biological cleanup. It is now accepted that bioavailability is a better indicator of risk than total chemical load (Alexander, 1995;Maddaloni, 2004;Peijnenburg et al, 2004;Pollumaa et al, 2004;Shuttleworth and Cerniglia, 1995;U.S. EPA, 1997U.S.…”

Section: Introductionmentioning

confidence: 99%

Comparison of naphthalene bioavailability determined by whole-cell biosensing and availability determined by extraction with Tenax

Kohlmeier

Mancuso

Deepthike

et al. 2008

Environmental Pollution

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Environmental aspects of PAH biodegradation

Cited by 233 publications

References 41 publications

Biodegradation of naphthalene and anthracene by chemo-tactically active rhizobacteria of populus deltoides

Biodegradation of naphthalene and anthracene by chemo-tactically active rhizobacteria of populus deltoides

A novel degradation pathway in the assimilation of phenanthrene by Staphylococcus sp. strain PN/Y via meta-cleavage of 2-hydroxy-1-naphthoic acid: formation of trans-2,3-dioxo-5-(2′-hydroxyphenyl)-pent-4-enoic acid

Comparison of naphthalene bioavailability determined by whole-cell biosensing and availability determined by extraction with Tenax

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