benzofurans and 2-5-dihydroxybenzoic-acid

The dibenzofuran (DF)-degrading bacterium, Janibacter terrae strain XJ-1, was isolated from sediment from East Lake in Wuhan, China. This strain grows aerobically on DF as the sole source of carbon and energy; it has a doubling time of 12 hours at 30 degrees C; and it almost completely degraded 100 mg/L(-1) DF in 5 days, producing 2,2',3-trihydroxybiphenyl, salicylic acid, gentisic acid, and other metabolites. The dbdA (DF dioxygenase) gene cluster in the strain is almost identical to that on a large plasmid in Terrabacter sp. YK3. Unlike Janibacter sp. strain YY-1, XJ-1 accumulates gentisic acid rather than catechol as a final product of DF degradation.

Topics: Actinomycetales; Benzofurans; Biodegradation, Environmental; Dioxygenases; Gas Chromatography-Mass Spectrometry; Gentisates; Models, Chemical; Molecular Sequence Data; Molecular Structure; Phylogeny; RNA, Ribosomal, 16S; Salicylic Acid; Sequence Analysis, DNA; Substrate Specificity