Degradation of Aroclor 1242 Dechlorination Products in Sediments by Burkholderia xenovorans LB400( ohb ) and Rhodococcus sp. Strain RHA1( fcb )
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چکیده
منابع مشابه
Residual Petroleum in Sediments Reduces the Bioavailability and Rate of Reductive Dechlorination of Aroclor 1242
Residual petroleum hydrocarbons and polychlorinated biphenyls (PCBs) are frequently found together at contamination sites. Intrinsic reductive dechlorination of PCBs at these sites is highly variable. Sediments of Silver Lake (MA), which contain ∼6.2% petroleum hydrocarbons, did not support PCB dechlorination in laboratory assays. Removal of petroleum components from Silver Lake sediments by so...
متن کاملAn inducible propane monooxygenase is responsible for N-nitrosodimethylamine degradation by Rhodococcus sp. strain RHA1.
Rhodococci are common soil heterotrophs that possess diverse functional enzymatic activities with economic and ecological significance. In this study, the correlation between gene expression and biological removal of the water contaminant N-nitrosodimethylamine (NDMA) is explored. NDMA is a hydrophilic, potent carcinogen that has gained recent notoriety due to its environmental persistence and ...
متن کاملClassification of the biphenyl- and polychlorinated biphenyl-degrading strain LB400 and relatives as Burkholderia xenovorans sp. nov
Strain LB400 is the best-studied polychlorinated biphenyl (PCB) degrader. This organism has previously been allocated in the genus Burkholderia, since its 16S rRNA gene sequence shows 98?6% sequence similarity to the type strains of Burkholderia graminis and Burkholderia terricola. A polyphasic study was undertaken to clarify the actual taxonomic position of this biotechnologically important or...
متن کاملCharacterization of transcriptional regulatory genes for biphenyl degradation in Rhodococcus sp. strain RHA1.
Transcription of the bphA1A2A3A4C1B genes, which are responsible for the conversion of biphenyl and polychlorinated biphenyl to the meta-cleavage products in Rhodococcus sp. strain RHA1, was examined. The bphA1 promoter (P(bphA1)) was identified and was shown to promote transcription induction by biphenyl and ethylbenzene. An 8.8-kb HindIII fragment that promotes transcription induction of P(bp...
متن کاملPhenylacetate catabolism in Rhodococcus sp. strain RHA1: a central pathway for degradation of aromatic compounds.
In gram-negative bacteria, a pathway for aerobic degradation of phenylacetic acid (PAA) that proceeds via phenylacetyl-coenzyme A (CoA) and hydrolytic ring fission plays a central role in the degradation of a range of aromatic compounds. In contrast, the PAA pathway and its role are not well characterized in gram-positive bacteria. A cluster including 13 paa genes encoding enzymes orthologous t...
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ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 2006
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.72.4.2476-2482.2006