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Naphthalene Degrdation by a Psychrotolerant Pseudomonad Isolated from the Antarctic Soil

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Title
Naphthalene Degrdation by a Psychrotolerant Pseudomonad Isolated from the Antarctic Soil
Other Titles
남극 토양에서 분리한 저온성 세균 pseudomonad에 의한 나프탈렌 분해
Authors
Ahn, Eunsol
Kim, Eungbin
Kim, Kyungsun
Kim, Dockyu
Keywords
Antarctic; Naphthalene; Pseudomonad; Psychrotolerant
Issue Date
2010
Citation
Ahn, Eunsol, et al. 2010. Naphthalene Degrdation by a Psychrotolerant Pseudomonad Isolated from the Antarctic Soil. 한국미생물학회연합. 한국미생물학회연합. 2010.10.14~.
Abstract
Pseudomonas strain MC1 was isolated from the waste water treatment facilities at the Korea’s King Sejong station (62°13’S 58°47’W) on King George Island for the ability to grow on naphthalene as the sole carbon and energy source. MC1 was also found to grow well on phnanthrene but, unlike most other naphthalene-degrading bacteria, it cannot grow on biphenyl. Growth substrate range experiments coupled with the ring-cleavage enzyme assay data suggest that MC1 initially metabolizes naphthalene to salicylate with subsequent degradation through meta-ring cleavage pathway. One interesting aspect of the MC1 growth is that growth temperature optima are different for different growth substrates. Namely, on succinate, MC1 showed optimal growth at the temperature of 15~ 30℃ whereas its growth on salicylate is significantly inhibited at 30℃ with accumulation of brownish-colored compound in the medium. This observation indicates that a certain enzyme(s) responsible for metabolizing salicylate is more thermo-unstable than the ones involved in the metabolism succinate.
URI
http://repository.kopri.re.kr/handle/201206/8538
Conference Name
한국미생물학회연합
Conference Place
한국미생물학회연합
Conference Date
2010.10.14~
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