Abstract
Four aerobic bacterial strains capable of utilizing di-n-butyl phthalate (DBP) as the sole source of carbon and energy were isolated from river sediments. Based on the morphology, biochemical characterization, and 16S rRNA gene sequence analysis, they were identified as Gordonia sp. The optimal conditions for DBP degradation by these strains were found to be pH 7.0, 30°C, and stirring at 175 rpm. These four strains could degrade, respectively, 96, 98, 98, and 78% of DBP (400 mg l−1) as well as dimethyl phthalate (DMP), diethyl phthalate (DEP), di-n-octyl phthalate (DOP), di-isooctyl phthalate (DIOP), and di-isononyl phthalate (DINP). Furthermore, partial sequences of the gene for 3,4-phthalate dioxygenase were obtained from all four strains. To our knowledge, this is the first time that the 3,4-phthalate dioxygenase gene has been successfully cloned from Gordonia sp.
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This investigation was financially supported by the National Natural Science Foundation of China (no. 30770388).
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Wu, X., Wang, Y., Dai, Q. et al. Isolation and characterization of four di-n-butyl phthalate (DBP)-degrading Gordonia sp. strains and cloning the 3,4-phthalate dioxygenase gene. World J Microbiol Biotechnol 27, 2611–2617 (2011). https://doi.org/10.1007/s11274-011-0734-2
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DOI: https://doi.org/10.1007/s11274-011-0734-2