Fisheries and Aquatic Sciences

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Rapid detection and Quantification of Fish Killing Dinoflagellate Cochlodinium polykrikoides (Dinophyceae) in Environmental Samples Using Real-time PCR

  • Park, Tae-Gyu (Marine Ecology Research Division, National Fisheries Research and Development Institute) ;
  • Kang, Yang-Soon (Marine Ecology Research Division, National Fisheries Research and Development Institute) ;
  • Seo, Mi-Kyung (Marine Ecology Research Division, National Fisheries Research and Development Institute) ;
  • Kim, Chang-Hoon (Department of Aquaculture, Pukyong National University) ;
  • Park, Young-Tae (Marine Ecology Research Division, National Fisheries Research and Development Institute)
  • Published : 2008.12.31
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Abstract

The mixotrophic dinoflagellate Cochlodinium polykrikoides was reported to be linked to major fish kills in Korea and Japan since the 1990s. Rapid and sensitive detection of microalgae has been problematic because morphological identification of dinoflagellates requires light microscopic and scanning electron microscopic observations that are time consuming and laborious compared to real-time PCR. To address this issue, a real-time PCR probe targeting the ITS2 rRNA gene was used for rapid detection and quantification of C. polykrikoides. PCR inhibitors in water column samples were removed by dilution of template DNA for elimination of false-negative reactions. A strong association between cell quantification using real-time PCR and microscopic counts suggests that the real-time PCR assay is an alternative method for cell estimation of C. polykrikoides in environment samples.

Keywords

References

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