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Isolation and characterization of diesel-degrading Pseudomonas strains from diesel-contaminated soils in Iran (Fars province) | ||
| Pollution | ||
| مقاله 6، دوره 2، شماره 1، فروردین 2016، صفحه 67-75 اصل مقاله (743.04 K) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.7508/pj.2016.01.007 | ||
| نویسندگان | ||
| Zahar Niazy؛ Mehdi Hassanshahian* ؛ Ahmad Ataei | ||
| Department of Biology, Faculty of Science, Shahid Bahonar University of Kerman, Kerman, Iran | ||
| چکیده | ||
| In this study, among the 21 diesel-degrading bacteria that were isolated from an oil-polluted area in Fars (Iran), 6 bacterial strains were tested for their capability to metabolize and grow on diesel oil by degrading its hydrocarbons content. The biochemical characteristics and 16S rRNA sequence analysis of diesel-degrading bacteria showed that these strains were related to the genus Pseudomonas. Among the six isolates, five strains (L1, I2, D1, D2, and G1) were clustered with Pseudomonas aeruginosa, whereas only one strain (K3) was clustered with Pseudomonas fragi. Gas chromatographic (GC) analysis of the diesel oil that was remaining in the culture medium after 10 days of culture at 30°C showed that P. aeruginosa I2 presented the highest growth rate and diesel-oil degradation (88%) between all isolates. P. aeruginosa I2 also presented the best emulsification activity, but the best hydrophobicity was seen in P. aeruginosa G1. By applying these bacteria in bioremediation processes, diesel oil contamination in soil can be counteracted. | ||
| کلیدواژهها | ||
| biodegradation؛ Bioremediation؛ diesel oil؛ polluted soil؛ Pseudomonas | ||
| مراجع | ||
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