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Isolation and identification of psychrophilic bacteria in the vicinity of the Korean King Sejong Antarctic Station

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Title
Isolation and identification of psychrophilic bacteria in the vicinity of the Korean King Sejong Antarctic Station
Other Titles
남극 세종기지 주변에 서식하는 호냉성 미생물의 분류 및 동정
Authors
Hong, Soon Gyu
Lee, Yoo Kyung
Kim, Il-Chan
Lee, Hyoungseok
Lee, Hong Kum
Jung, Hyun Jung
Yim, Joung Han
Keywords
Antarctic bacteria; Korean King Sejong station; Marine bacteria; Psychrophilic bacteria; Psychrotolerant bacteria
Issue Date
2008
Citation
Hong, Soon Gyu, et al. 2008. Isolation and identification of psychrophilic bacteria in the vicinity of the Korean King Sejong Antarctic Station. KOPRI. KOPRI. 2008.09.26~.
Abstract
Marine psychrophilic bacteria that inhabit seawater at below 4C, play essential roles in marine ecosystem. To investigate their distribution in the Antarctic region, we have isolated 35 strains of polar bacteria originated from Antarctic sea water, fresh water in the vicinity of the King Sejong Korean Antarctic Station located at King George Island (62S, 58W) during November and December, 2005. To examine their growing temperature ranges, we measured average diameter of colonies formed at various temperature ranging from 4C to 37C. Among them, 10 strains have formed large colonies at low temperatures and shown the highest growth rate at 4C or 15C, and formed no colony above 20C. We have carried out molecular identification using 16S rRNA sequence as a marker. As a result, 8 strains were identified as belonging to genus Flavobacterium, 12 strains to genus Psychrobacter species like P. arcticus, P. glacincola, and P. luti. Also, nine Antarctic strains showing low sewuence similarity (<97%) with known species are candidates for new species or genus. In this study, we isolated 35 psychrophilic or psychrotolerant bacteria from Antarctic region and they would be useful biological sources for studying cold adaptation of living organisms.
URI
http://repository.kopri.re.kr/handle/201206/7877
Conference Name
KOPRI
Conference Place
KOPRI
Conference Date
2008.09.26~
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