Degradation of chlorobenzoates in soil suspensions by indigenous populations and a specialized organism: interactions between growth and non-growth substrates

Baggi, G; Zangrossi, Maurizio

doi:10.1111/j.1574-6941.1999.tb00622.x

Cited by 15 publications

(3 citation statements)

References 23 publications

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“…Species in these genera have been reported as petroleum hydrocarbon degraders (6,15,23,36) and, thus, the phylotypes were candidates for a significant role in TPH degradation in the LTU; yet, the low abundance of these phylotypes may suggest a negligible role in TPH degradation. While the low relative abundance of these phylotypes may be the result of PCR bias, the important factor in distinguishing phylotypes responsible for the fast TPH degradation rate at the beginning of the study was a positive correlation with TPH concentration, as observed for the Flavobacterium, Pseudomonas, and Azoarcus 2 phylotypes.…”

Section: Discussionmentioning

confidence: 99%

Bacterial Succession in a Petroleum Land Treatment Unit

Kaplan

Kitts

2004

Appl Environ Microbiol

248

128

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Bacterial community dynamics were investigated in a land treatment unit (LTU) established at a site contaminated with highly weathered petroleum hydrocarbons in the C 10 to C 32 range. The treatment plot, 3,000 cubic yards of soil, was supplemented with nutrients and monitored weekly for total petroleum hydrocarbons (TPH), soil water content, nutrient levels, and aerobic heterotrophic bacterial counts. Weekly soil samples were analyzed with 16S rRNA gene terminal restriction fragment (TRF) analysis to monitor bacterial community structure and dynamics during bioremediation. TPH degradation was rapid during the first 3 weeks and slowed for the remainder of the 24-week project. A sharp increase in plate counts was reported during the first 3 weeks, indicating an increase in biomass associated with petroleum degradation. Principal components analysis of TRF patterns revealed a series of sample clusters describing bacterial succession during the study. The largest shifts in bacterial community structure began as the TPH degradation rate slowed and the bacterial cell counts decreased. For the purpose of analyzing bacterial dynamics, phylotypes were generated by associating TRFs from three enzyme digests with 16S rRNA gene clones. Two phylotypes associated with Flavobacterium and Pseudomonas were dominant in TRF patterns from samples during rapid TPH degradation. After the TPH degradation rate slowed, four other phylotypes gained dominance in the community while Flavobacterium and Pseudomonas phylotypes decreased in abundance. These data suggest that specific phylotypes of bacteria were associated with the different phases of petroleum degradation in the LTU.

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Section: Discussionmentioning

confidence: 99%

Bacterial Succession in a Petroleum Land Treatment Unit

Kaplan

Kitts

2004

Appl Environ Microbiol

248

128

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“…The presence of 3,5-CBA completely inhibited growth of Pseudomonas putida P111 on 2-CBA, 2,3-CBA, 2,4-CBA, 2,5-CBA, and 2,3,5-CBA [12]. Also, the presence of 2,6-CBA slowed down 4-CBA degradation, while 2,3-CBA and 3,4-CBA completely inhibited the degradation of 4-CBA [18]. …”

Section: Resultsmentioning

confidence: 99%

Influence of Root Exudates on the Bacterial Degradation of Chlorobenzoic Acids

Vrchotová

Lovecká

Dražková

et al. 2013

The Scientific World Journal

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Degradation of chlorobenzoic acids (e.g., products of microbial degradation of PCB) by strains of microorganisms isolated from PCB contaminated soils was assessed. From seven bulk-soil isolates two strains unique in ability to degrade a wider range of chlorobenzoic acids than others were selected, individually and even in a complex mixture of 11 different chlorobenzoic acids. Such a feature is lacking in most tested degraders. To investigate the influence of vegetation on chlorobenzoic acids degraders, root exudates of two plant species known for supporting PCB degradation in soil were tested. While with individual chlorobenzoic acids the presence of plant exudates leads to a decrease of degradation yield, in case of a mixture of chlorobenzoic acids either a change in bacterial degradation specificity, associated with 3- and 4-chlorobenzoic acid, or an extension of the spectrum of degraded chlorobenzoic acids was observed.

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“…Nowadays the degradation of chlorobenzoic acids has been studied widely in the world. Different methods including the biological or microbiological degradation; which are one of the useful techniques reported in literature [11][12][13][14][15][16] .…”

Section: Introductionmentioning

confidence: 99%

Simple and Economic Spectrophotometric Method for Simultaneous Photosensitized Dechlorination and Decarboxylation of Isomeric Mono‐ and Dichlorobenzoic Acids

Pande

Dwivedi

2010

Journal of Chemistry

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Simultaneous photosensitized dechlorination and decarboxylation of isomeric mono- and dichlorobenzoic acids have been studied in the presence of naphthoxide ion in alkaline medium. The effects of the pH, concentration of the sensitizer, concentration of the substrate, the intensity of the light and the temperature on the rate of the dechlorination have been studied. The quantum efficiency of the photodechlorination has been evaluated. The mechanisms of the photodechlorination and decarboxylation have been suggested. The method is simple, economic and effective.

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Degradation of chlorobenzoates in soil suspensions by indigenous populations and a specialized organism: interactions between growth and non-growth substrates

Cited by 15 publications

References 23 publications

Bacterial Succession in a Petroleum Land Treatment Unit

Bacterial Succession in a Petroleum Land Treatment Unit

Influence of Root Exudates on the Bacterial Degradation of Chlorobenzoic Acids

Simple and Economic Spectrophotometric Method for Simultaneous Photosensitized Dechlorination and Decarboxylation of Isomeric Mono‐ and Dichlorobenzoic Acids

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