Aerobic biodegradation of 4-methylquinoline by a soil bacterium
| Autor: | Brian K. Kinkle, Stacy L. Pfaller, David Warshawsky, Jodi R. Shann, S.D. Sutton, J R Vestal |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
chemistry.chemical_classification
Pollutant Bacteria Ecology biology Contamination Biodegradation biology.organism_classification Applied Microbiology and Biotechnology Aerobiosis Biodegradation Environmental Hydrocarbon chemistry Environmental chemistry Soil water Quinolines Degradation (geology) Organic chemistry Soil microbiology Soil Microbiology Research Article Food Science Biotechnology |
| Zdroj: | Applied and Environmental Microbiology. 62:2910-2914 |
| ISSN: | 1098-5336 0099-2240 |
| DOI: | 10.1128/aem.62.8.2910-2914.1996 |
| Popis: | Methylquinolines and related N-heterocyclic aromatic compounds are common contaminants associated with the use of hydrocarbons in both coal gasification and wood treatment processes. These compounds have been found in groundwater, and many are known mutagens. A stable, five-member bacterial consortium able to degrade 4-methylquinoline was established by selective enrichment using soil collected from an abandoned coal gasification site. The consortium was maintained for 5 years by serial transfer in a medium containing 4-methylquinoline. A gram-negative soil bacterium, strain Lep1, was isolated from the consortium and shown to utilize 4-methylquinoline as a source of carbon and energy during growth in liquid medium. A time course experiment demonstrated that both the isolate Lep1 and the consortium containing Lep1 were able to degrade 4-methylquinoline under aerobic conditions. Complete degradation of 4-methylquinoline by either strain Lep1 alone or the consortium was characterized by the production and eventual disappearance of 2-hydroxy-4-methylquinoline, followed by the appearance and persistence of a second metabolite tentatively identified as a hydroxy-4-methylcoumarin. Currently, there is no indication that 4-methylquinoline degradation proceeds differently in the consortium culture compared with Lep1 alone. This is the first report of 4-methylquinoline biodegradation under aerobic conditions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|