NEW PERSPECTIVES ON MICROBIAL DEHALOGENATION OF CHLORINATED SOLVENTS: Insights from the Field

Lee, M. D.; Odom, J. M.; Buchanan, R.J.

doi:10.1146/annurev.micro.52.1.423

Cited by 148 publications

(103 citation statements)

References 65 publications

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“…It has been well reviewed that several species of strictly or facultatively anaerobic bacteria are capable of dehalogenating chlorinated aliphatic and aromatic compounds 38,85,86,112,124) . Some of these dehalogenation processes have been shown to couple to ATP synthesis via a chemiosmotic mechanism.…”

Section: Reductive Dehalogenationmentioning

confidence: 99%

Biodiversity of Dioxin-Degrading Microorganisms and Potential Utilization in Bioremediation.

Hiraishi

2003

Microb. Environ.

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Dioxins are a group of chloroaromatic compounds known to be toxic and carcinogenic, and persistent environmental pollutants. How to remedy dioxin-polluted environments is one of the most challenging problems in environmental technology. From ecological and economical viewpoints, biological methods using particular microorganisms and microbial consortia capable of dioxin transformation and degradation have greater appeal than physicochemical methods in their application for environmental remediation. Large numbers of microorganisms capable of degrading dioxins and dioxin-like compounds have been isolated and characterized. Information about the biodiversity, ecophysiology and molecular biology of dioxin-degrading microorganisms has accumulated particularly during the past decade. There are three major modes of microbial degradation and transformation of dioxins; that is, oxidative degradation by aerobic bacteria containing aromatic hydrocarbon dioxygenases, reductive dechlorination by anaerobic microorganisms and fungal oxidation with cytochrome P-450, lignin peroxidases and laccases. This article overviews the current knowledge of microbial degradation and transformation of dioxins as well as the biodiversity of microorganisms involved. Strategies directed towards the bioremediation of dioxin-polluted environments are discussed.

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Section: Reductive Dehalogenationmentioning

confidence: 99%

Biodiversity of Dioxin-Degrading Microorganisms and Potential Utilization in Bioremediation.

Hiraishi

2003

Microb. Environ.

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“…Thus, the problem of how to remedy organohalogen pollution is central to environmental science and technology. Harnessing microbial reductive dehalogenation may offer scientifically sound and costeffective bioremediation procedures, because this anaerobic process may work more efficiently than aerobic biodegradation in removing halogen atoms from (poly)halogenated compounds 54,61,80,96,109) . During the past decade, a number of dehalorespiring microorganisms, including a unique group of dehalorespirers, "Dehalococcoides", have been isolated and characterized from phylogenetic, physiologic, and genetic points of view 81,113) .…”

Section: Introductionmentioning

confidence: 99%

Biodiversity of Dehalorespiring Bacteria with Special Emphasis on Polychlorinated Biphenyl/Dioxin Dechlorinators

Hiraishi

2008

Microb. Environ.

101

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A wide variety of haloorganic compounds undergo reductive dehalogenation by certain anaerobic microorganisms. Metabolic reductive dehalogenation is coupled with energy-conserving respiratory electron transport in which a halogenated compound is used as the terminal electron acceptor, the biological process called dehalorespiration or halorespiration. Dehalorespiring bacteria may play important roles in the geochemical cycle with organohalogens in nature and have great promise in their application to the bioremediation of haloorganic contaminants derived from anthropogenic sources. During the past decade, a number of dehalorespiring microorganisms, including a unique group of strictly dehalorespiring bacteria, "Dehalococcoides", have been isolated and characterized at phylogenetic, physiologic, and genetic levels. Also, new perspectives of dehalorespiring bacteria have emerged based on information about genomics and molecular microbial ecology. This review article focuses on up-to-date knowledge of the biodiversity of dehalorespiring bacteria and reductively dehalogenating microbial consortia with special emphasis on those capable of transforming polychlorinated biphenyls and dioxins.

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“…This environment is characterized by a constant influx of a single biodegradable organic compound A, for example, a xenobiotic (Alexander 1981;Leahy and Colwell 1990;Macaskie et al 1997;Lee et al 1998). We assume that bacteria can degrade A using a branched pathway (Fig.…”

Section: Fig 1 the Metabolic Pathwaymentioning

confidence: 99%

From Metabolism to Polymorphism in Bacterial Populations: A Theoretical Study

Tenaillon

Godelle

2001

Evolution

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Abstract. Stable polymorphisms are commonly observed in experimental bacterial populations grown in homogeneous media. Evidence is accumulating that metabolic interactions might be the main mechanism underlying the emergence and maintenance of such polymorphisms. To date, however, attempts to model the evolution of bacterial polymorphism have not considered metabolism as a possible component of polymorphism maintenance. Here, we propose a simulation approach to model the evolution of selected polymorphisms in a bacterial population. Using recent knowledge of the relationship between bacterial fitness and metabolism, we build a simple metabolic model and test the effect of resource competition on polymorphism. Without making an a priori hypothesis on fitness functions, we show that stable polymorphic situations could be observed under high nutrient competition, and we propose a functional, metabolismbased explanation to the debated issue of polymorphism maintenance.

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NEW PERSPECTIVES ON MICROBIAL DEHALOGENATION OF CHLORINATED SOLVENTS: Insights from the Field

Cited by 148 publications

References 65 publications

Biodiversity of Dioxin-Degrading Microorganisms and Potential Utilization in Bioremediation.

Biodiversity of Dioxin-Degrading Microorganisms and Potential Utilization in Bioremediation.

Biodiversity of Dehalorespiring Bacteria with Special Emphasis on Polychlorinated Biphenyl/Dioxin Dechlorinators

From Metabolism to Polymorphism in Bacterial Populations: A Theoretical Study

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