Journal of Marine Life Science (한국해양생명과학회지)

The Korean Society of Marine Life Science (한국해양생명과학회)
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Diversity of Culturable Bacteria Associated with Hard Coral from the Antarctic Ross Sea

  • Kim, Min Ju (Division of Polar Life Sciences, Korea Polar Research Institute) ;
  • Park, Ha Ju (Division of Polar Life Sciences, Korea Polar Research Institute) ;
  • Youn, Ui Joung (Division of Polar Life Sciences, Korea Polar Research Institute) ;
  • Yim, Joung Han (Division of Polar Life Sciences, Korea Polar Research Institute) ;
  • Han, Se Jong (Division of Polar Life Sciences, Korea Polar Research Institute)
  • Received : 2019.05.14
  • Accepted : 2019.06.11
  • Published : 2019.06.17
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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.

Keywords

Acknowledgement

This study was supported by the Korea Polar Research Institute (no. PE17100).

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