생명과학회지 (Journal of Life Science)

  • 제14권2호
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  • Pages.301-308
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  • 2004
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  • 1225-9918(pISSN)
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  • 2287-3406(eISSN)
한국생명과학회 (Korean Society of Life Science)
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진해만에서 분리한 무독성 Alexandrium tamarense (Dinophyceae) 동정을 위한 molecular probe 이용

Species Identification of Nontoxic Alexandrium tamarense (Dinophyceae) from Chinhae Bay, Korea, Using Molecular Probes

  • Cho, Eun-Seob (South Sea Fisheries Research Institute, Coastal Environment Management, NFRDI)
  • 발행 : 2004.04.01
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초록

진해만에서 분리한 무독성 Alexandrium tamarense와 이미 보고된 독성을 가진 A. tamarense종 간의 접속공, 제1상판, 후속공의 형태를 상호 비교하였다. 형태적으로 독성종과 거의 일치되지만, HPLC나 생체실험에서 진해만에서 새롭게 분리한 종은 독성이 전혀 나타나지 않았다. lectin반응결과 무독종 A. tamarense은 PNA와 강한 반응을 보여, 세포표면에 lactose나 galactose와 같은 물질이 많이 분포하고 있음을 보였다. 또한, 단백질 전기영동시 무독종은 유독종과 달리 21 kDa 정도 부위에서 종 특이적 밴드를 보였다. 따라서 PNA lectin이나 면역학적 방법을 이용하면 무독종 A. famarense을 신속하게 동정하는데 이용될 수 있다.

The morphology of the apical pore complex, the first apical plate and the posterior sulcal plates in a new isolate of Alexandrium tamarense (Lebour) Balech from the Bay of Chinhae was compared with other that of toxic strains of A. tamarense previously isolated from Korean waters. Although this isolate was morphologically identical to these toxic strains, high performance liquid chromatography and mouse bioassay showed no evidence of toxin production. The nontoxic A. tamarense strain showed a strong positive binding activity with PNA lectin, indicating a high density of lactose and galactose residues on the cell surface, and in SDS-PAGE and Western blot analysis a unique protein of about 21-kDa molecular sizes was observed. These findings demonstrate that the use of PNA and immunobioassay could be used to discriminate between toxic and nontoxic strains of A. tamarense.

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