Some dinophycean red tide plankton species generate a superoxide scavenging substance

Emiko Sato, Yoshimi Niwano, Yukihiko Matsuyama, Daekyung Kim, Takuji Nakashima, Tatsuya Oda, Masahiro Kohno

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Recent studies indicate that some raphidophycean red tide flagellates produce substances able to scavenge superoxide, whereas there have been no reports on superoxide scavenger production by dinophycean red tide flagellates. In this study, we examined the superoxide-scavenging activity of aqueous extracts from dinophycean red tide flagellates, Gymnodinium spp., Scrippsiella trochoidea, and Karenia sp., by a luminol analog L-012-dependent chemiluminescence (CL) method and an electron spin resonance (ESR)-spin trapping method, and compared the activity to that of raphidophycean red tide flagellates, Chattonella spp., Heterosigma akashiwo, and Fibrocapsa japonica. In the experiment applying the L-012-dependent CL method, only the aqueous extracts from raphidophycean red tide flagellates showed superoxide-scavenging activity. On the other hand, applying the ESR-spin trapping method, we found that the aqueous extracts from dinophycean red tide flagellates also showed superoxide-scavenging activity. This is the first report on the production of a superoxide-scavenger by dinophycean red tide flagellates.

Original languageEnglish
Pages (from-to)704-710
Number of pages7
JournalBioscience, Biotechnology and Biochemistry
Volume71
Issue number3
DOIs
Publication statusPublished - 2007

Keywords

  • Dinophyceae
  • Raphidophyceae
  • Red tide plankton
  • Superoxide scavenger

ASJC Scopus subject areas

  • Biotechnology
  • Analytical Chemistry
  • Biochemistry
  • Applied Microbiology and Biotechnology
  • Molecular Biology
  • Organic Chemistry

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