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Characterization of PAH-Degrading Bacteria from Soils of Reed Rhizosphere in Sunchon Bay Using PAH Consortia  

Kim Sung-Hyun (Department of Environmental Education, Sunchon National University)
Kang Sung-Mi (Department of Environmental Education, Sunchon National University)
Oh Kye-Heon (Department of Life Science, Sonnchunhyang University)
Kim Seung-Il (Proteom Analysis Team. Korea Basic Science Institute)
Yoon Byoung-Jun (Department of Life Science, Cheju National University)
Kahng Hyung-Yeel (Department of Environmental Education, Sunchon National University)
Publication Information
Korean Journal of Microbiology / v.41, no.3, 2005 , pp. 208-215 More about this Journal
Abstract
This study was accomplished in order to collect fundamental data on microbial roles in recycling process of reed rhizosphere. Sunchon bay, which is considered as one of the marsh and mud environments severely affected by human activities such agriculture and fisheries, was selected as a model place. In our initial efforts, two bacterial consortia were obtained by enrichment culture using PAH mixtures containing anthracene, naphthalene, phenanthrene and pyrene as the sources of carbon and energy, and four pure bacteria capable of rapid degradation of PAH were isolated from them. Four strains designated as SCB1, SCB2, SCB6, and SCB7 revealed by morphological, physiological and molecular analyses were identified as Burkholderia anthina, Alcaligenes sp., Achromobacter xylosoxidans., and Pseudomonas putida, respectively with over $99{\%}$ confidence. Notably, Burkholderia anthina SCB1 and Alcaligenes sp. SCB2 were found to utilize anthracene and pyrene more quickly than naphthalene and phenanthrene, whereas Achromobacter xylosoxidans SCB6 and Pseudomonas putida SCB7 exhibited similar growth and degradation patterns except for pyrene. These facts suggest that the rhizosphere microorganisms capable of PAH degradation might be used to clean up the contamination sites with polycyclic aromatic hydrocarbons.
Keywords
PAH; Phragmites communis; reed rhizosphere; Sunchon bay;
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