Title |
Biodegradation of Chlorpyrifos (CP) by a Newly Isolated Naxibacter sp. Strain CY6 and Its Ability to Degrade CP in Soil |
Author |
Chul Ho Kim1,2, Jin Sang Choi1,3, In Surk Jang1,4, and Kye Man Cho1,3* |
Address |
1Institute of Fusion Biotechnology, Gyeongnam National University of Science and Technology, 2Department of Pharmaceutical Engineering, Gyeongnam National University of Science and Technology, 3Department of Food Science, Gyeongnam National University of Science and Technology, 4Department of Animal Science and Biotechnology, Gyeongnam National University of Science and Technology |
Bibliography |
Korean Journal of Microbiology, 49(1),83-89, 2013 |
DOI |
http://dx.doi.org/10.7845/kjm.2013.016
|
Key Words |
β-proteobacteria, Naxibacter sp. CY6, biodegradation, chlorpyrifos, organophosphours pesticides |
Abstract |
A bacterium, isolated from a vegetable field in a plastic film house and named strain CY6 was capable of biodegrading chlorpyrifos (CP). Based on the phenotypic features and the phylogenetic similarity of 16S rRNA gene sequences, strain CY6 was identified as a Naxibacter sp.. CP was utilized as the sole source of carbon and phosphorus by Naxibacter sp. CY6. We examined the role of this Naxibacter sp. in the degradation of other OP insecticides under liquid cultures. Parathion, methyl parathion, diazinon, cadusafos, and ethoprop could also be degraded by Naxibacter sp. CY6 when they are provided as the sole sources of carbon and phosphorus. Additionally, Naxibacter sp. CY6 (108 CFU/g) added to soil with CP (100 mg/kg) resulted in a higher degradation rate of approximately 90% than the rate obtained from uninoculated soils. These results highlight the potential of this bacterium to be used in the cleanup of contaminated pesticide soil. |
Download PDF |
49(1)_13_p.83-89.pdf |