An environmental isolate Comamonas testosteroni RF2 has been previously described to cometabolize trichloroethene (TCE), 1,2-cis-dichloroethene (cDCE), 1,2-trans-dichloroethene (tDCE), and 1,1-dichloroethene (1,1DCE) when grown on phenol and lactate sodium. In this study, three vinyl chloride (VC) degrading strains, Mycobacterium aurum L1, Pseudomonas putida PS, and Rhodococcus ruber Sm-1 were used to form consortia with the strain RF2 in terms to achieve the removal of VC along with above-mentioned chloroethenes. Degradation assays were performed for a binary mixture of cDCE and VC as well as for a mixture of TCE, all DCEs and VC. The consortium composed of C. testosteroni RF2 and M. aurum L1 showed to be the most efficient towards the removal of cDCE (6.01 mg L-1) in the binary mixture with VC (10 mg L-1) and was capable of efficiently removing chloroethenes in the mixture sample at the initial concentrations of 116 μg L-1 for TCE, 662 μg L-1 for cDCE, 42 μg L-1 for tDCE, 16 μg L-1 for 1,1DCE, and 7 mg L-1 for VC with a removal efficiency of nearly 100% for all of the compounds. Although complete removal of VC took a significantly longer time than the removal of other chloroethenes, the consortium composed of C. testosteroni RF2 and M. aurum L1 displayed strong bioremediation potential for aquifers with downstream contamination characterized by the presence of less chlorinated ethenes.
Contamination by chloroethenes has a severe negative effect on both the environment and human health. This has prompted intensive remediation activity in recent years, along with research into the efficacy of natural microbial communities for degrading toxic chloroethenes into less harmful compounds. Microbial degradation of chloroethenes can take place either through anaerobic organohalide respiration, where chloroethenes serve as electron acceptors; anaerobic and aerobic metabolic degradation, where chloroethenes are used as electron donors; or anaerobic and aerobic co-metabolic degradation, with chloroethene degradation occurring as a by-product during microbial metabolism of other growth substrates, without energy or carbon benefit. Recent research has focused on optimising these natural processes to serve as effective bioremediation technologies, with particular emphasis on (a) the diversity and role of bacterial groups involved in dechlorination microbial processes, and (b) detection of bacterial enzymes and genes connected with dehalogenation activity. In this review, we summarise the different mechanisms of chloroethene bacterial degradation suitable for bioremediation and provide a list of dechlorinating bacteria. We also provide an up-to-date summary of primers available for detecting functional genes in anaerobic and aerobic bacteria degrading chloroethenes metabolically or co-metabolically.
- MeSH
- autoimunitní nemoci MeSH
- Caplanův syndrom MeSH
- hygiena práce MeSH
- kožní lupus erytematodes MeSH
- křemík * škodlivé účinky MeSH
- lidé MeSH
- nemoci z povolání MeSH
- organické sloučeniny křemíku MeSH
- příznaky a symptomy MeSH
- revmatoidní artritida MeSH
- systémová sklerodermie * etiologie patologie MeSH
- vibrace MeSH
- vinylchlorid MeSH
- Check Tag
- lidé MeSH
- MeSH
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- nádory plic etiologie MeSH
- nemoci jater etiologie MeSH
- nemoci z povolání chemicky indukované MeSH
- onemocnění periferních cév etiologie MeSH
- vinylchlorid škodlivé účinky MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
Závěrečná zpráva o řešení grantu Interní grantové agentury MZ ČR
Přeruš. str. : il., tab. ; 32 cm
Research and development of the polarographic and voltammetric methods and instrumentation (including special accessories), of working procedures and of the pertaining software for determination of selected biologically active substances.
Výzkum a vývoj voltametrické,polarografické a příbuzné elektroanalytické metodiky,instrumentace,pracovních postupů a software pro stanovení vybraných biologicky aktivních látek a jejich metabolitů,zejména na bázi chlorovaných uhlovodíků a bipyridilů . Nové možnosti polarografické a voltametrické analýzy vybraných biolgicky aktivních látek v toxikologicky zajímavých systémech.Vytvoření odpovídající laboratoře pro výzkum a aplikaci. New poáibilities of polarographic and voltammetric analysis of selectedbiologically active compouds in toxicologically important systems. Establishment of a laboratory appropriate for basic and applied research.
- MeSH
- arsen toxicita analýza MeSH
- olovo toxicita analýza MeSH
- polarografie přístrojové vybavení využití metody MeSH
- potenciometrie přístrojové vybavení využití metody MeSH
- rtuť toxicita analýza MeSH
- vinylchlorid toxicita analýza MeSH
- Konspekt
- Chemie. Mineralogické vědy
- NLK Obory
- chemie, klinická chemie
- toxikologie
- NLK Publikační typ
- závěrečné zprávy o řešení grantu IGA MZ ČR
