Summary
The red tide alga,Chattonella antiqua, was found to show a strong chemiluminescence, using luminol as the reagent, when exposed to ultraviolet irradiation. This luminescence was completely inhibited by ascorbate or catalase, suggesting that hydrogen peroxide was generated by the plankton. Red tide cells exposed to fish gill mucus from young yellowtail resulted in the release of a large number of mucocysts and a weak luminosity, and showed a strong reduction of cytochromec in the medium. Therefore, the discharge of mucocysts from the red tide, induced by the presence of gill mucus, may be accompanied by the release of active oxygen species. The active oxygen may be involved in depolymerization of mucus glycoproteins from the gill lamellae.
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Shimada, M., Akagi, N., Nakai, Y. et al. Free radical production by the red tide alga,Chattonella antiqua . Histochem J 23, 361–365 (1991). https://doi.org/10.1007/BF01042181
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DOI: https://doi.org/10.1007/BF01042181