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Microbial characterization of toluene-degrading denitrifying consortia obtained from terrestrial and marine ecosystems

Title
Microbial characterization of toluene-degrading denitrifying consortia obtained from terrestrial and marine ecosystems
Authors
An Y.-J.Joo Y.-H.Hong I.-Y.Ryu H.-W.Cho K.-S.
Ewha Authors
조경숙
SCOPUS Author ID
조경숙scopus
Issue Date
2004
Journal Title
Applied Microbiology and Biotechnology
ISSN
0175-7598JCR Link
Citation
Applied Microbiology and Biotechnology vol. 65, no. 5, pp. 611 - 619
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
Abstract: The degradation characteristics of toluene coupled to nitrate reduction were investigated in enrichment culture and the microbial communities of toluene-degrading denitrifying consortia were characterized by denaturing gradient gel electrophoresis (DGGE) technique. Anaerobic nitrate-reducing bacteria were enriched from oil-contaminated soil samples collected from terrestrial (rice field) and marine (tidal flat) ecosystems. Enriched consortia degraded toluene in the presence of nitrate as a terminal electron acceptor. The degradation rate of toluene was affected by the initial substrate concentration and co-existence of other hydrocarbons. The types of toluene-degrading denitrifying consortia depended on the type of ecosystem. The clone RS-7 obtained from the enriched consortium of the rice field was most closely related to a toluene-degrading and denitrifying bacterium, Azoarcus denitrificians (A. tolulyticus sp. nov.). The clone TS-11 detected in the tidal flat enriched consortium was affiliated to Thauera sp. strain S2 (T. aminoaromatica sp. nov.) that was able to degrade toluene under denitrifying conditions. This indicates that environmental factors greatly influence microbial communities obtained from terrestrial (rice field) and marine (tidal flat) ecosystems.
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DOI
10.1007/s00253-004-1596-4
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엘텍공과대학 > 환경공학전공 > Journal papers
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