ALGAE

  • 제31권4호
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  • Pages.373-378
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  • 2016
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  • 1226-2617(pISSN)
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  • 2093-0860(eISSN)
한국조류학회(藻類) (The Korean Society of Phycology)
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The exceptionally large genome of the harmful red tide dinoflagellate Cochlodinium polykrikoides Margalef (Dinophyceae): determination by flow cytometry

  • Hong, Hyun-Hee (School of Biological Sciences and Technology, Chonnam National University) ;
  • Lee, Hyun-Gwan (Department of Oceanography, Chonnam National University) ;
  • Jo, Jihoon (School of Biological Sciences and Technology, Chonnam National University) ;
  • Kim, Hye Mi (Department of Oceanography, Chonnam National University) ;
  • Kim, Su-Man (School of Biological Sciences and Technology, Chonnam National University) ;
  • Park, Jae Yeon (CO2 Recycling Research Center, Advanced Institutes of Convergence Technology, Seoul National University) ;
  • Jeon, Chang Bum (Department of Oceanography, Chonnam National University) ;
  • Kang, Hyung-Sik (School of Biological Sciences and Technology, Chonnam National University) ;
  • Park, Myung Gil (Department of Oceanography, Chonnam National University) ;
  • Park, Chungoo (School of Biological Sciences and Technology, Chonnam National University) ;
  • Kim, Kwang Young (Department of Oceanography, Chonnam National University)
  • 투고 : 2016.10.22
  • 심사 : 2016.12.06
  • 발행 : 2016.12.15
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초록

Cochlodinium polykrikoides is a red-tide forming dinoflagellate that causes significant worldwide impacts on aquaculture industries and the marine ecosystem. There have been extensive studies on managing and preventing C. polykrikoides blooms, but it has been difficult to identify an effective method to control the bloom development. There is also limited genome information on the molecular mechanisms involved in its various ecophysiology and metabolism processes. Thus, comprehensive genome information is required to better understand harmful algal blooms caused by C. polykrikoides. We estimated the C. polykrikoides genome size using flow cytometry, with detection of the fluorescence of DNA stained with propidium iodide (PI). The nuclear genome size of C. polykrikoides was 100.97 Gb, as calculated by comparing its mean fluorescence intensity (MFI) to the MFI of Mus musculus, which is 2.8 Gb. The exceptionally large genome size of C. polykrikoides might indicate its complex physiological and metabolic characteristics. Our optimized protocol for estimating the nuclear genome size of a dinoflagellate using flow cytometry with PI can be applied in studies of other marine organisms.

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