book_cover_img The Korean Society of Marine Life Science Journal of Marine Life Science eISSN 2508-7134
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Year of Launching : 2016
Frequency : Twice a year (June 15, December 15)
Doi Prefix : 10.23005/ksmls.

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ISSN : 2508-7134(Online)
Journal of Marine Life Science Vol.4 No.1 pp.22-28
DOI :

Diversity of Culturable Bacteria Associated with Hard Coral from the Antarctic Ross Sea

Min Ju Kim1, Ha Ju Park1, Ui Joung Youn1, Joung Han Yim1, Se Jong Han1,2*
1Division of Polar Life Sciences, Korea Polar Research Institute, Incheon 21990, Korea
2Department of Polar Sciences, University of Science and Technology, Daejeon 34113, Korea

Corresponding Author Se Jong Han Division of Polar Life Sciences, Korea Polar Research Institute, Incheon 21990, Korea E-mail : hansj@kopri.re.kr

Abstract

The bacterial diversity of an Antarctic hard coral, Errina fissurata, was examined by isolating bacterial colonies from crushed coral tissue and by sequencing their 16S rRNA gene. From the analyzed results, the bacteria were classified as Actinobacteria (56%), Firmicutes (35%) and Proteobacteria (9%). The thirty-four isolates were cultured in liquid media at different temperatures and their growth was assessed over time. The majority of the isolates displayed their highest growth rate at 25℃ during the first three days of cultivation, even though the coral was from a cold environment. Nevertheless, strains showing their highest growth rate at low temperatures (15℃ and 4℃) were also found. This study reports the composition of an Antarctic hard coral-associated culturable bacterial community and their growth behavior at different temperatures.

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