Isolation and characterization of polycyclic aromatic hydrocarbon-degrading Mycobacterium isolates from soil.

作者: C.D. Miller , K. Hall , Y.N. Liang , K. Nieman , D. Sorensen

DOI: 10.1007/S00248-003-1044-5

关键词: MycobacteriumPyreneBiologyBotanyPolycyclic aromatic hydrocarbonMicrobiologyBioremediationBacteriaSoil microbiologyMycobacterium vanbaaleniiRibosomal DNA

摘要: Bioremediation of soils contaminated with wood preservatives containing polycyclic aromatic hydrocarbons (PAHs) is desired because their toxic, mutagenic, and carcinogenic properties. Creosote preservative-contaminated at the Champion International Superfund Site in Libby, Montana currently undergo bioremediation a prepared-bed land treatment unit (LTU) process. Microbes isolated from these LTU rapidly mineralized (14)C-labeled PAH pyrene soil. Gram staining, electron microscopy, 16S rDNA-sequencing revealed that three bacteria, JLS, KMS, MCS, were Mycobacterium strains. The phylogeny rDNA showed they distinct other isolates PAH-degrading activities. Catalase superoxide dismutase (SOD) isozyme profiles confirmed each isolate was mycobacterium, vanbaalenii sp. nov, petroleum-contaminated We find dioxygenase genes nidA nidB are present Libby adjacent to sequence nidB-nidA, an order unique mycobacteria.

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