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Journal of Plankton Research Vol.24 no.11 pp.1231-1236, 2002
© Oxford University Press 2002

SHORT COMMUNICATION

Photosynthesis does influence superoxide production in the ichthyotoxic alga Chattonella marina (Raphidophyceae)

Judith-Anne Marshall, Mark Hovenden, Tatsuya Oda1 and Gustaaf M. Hallegraeff

School of Plant Science, University of Tasmania, Po Box 252–55, Hobart, Tasmania 7001, Australia and 1 Division of Biochemistry, Faculty of Fisheries, Nagasaki University, Nagasaki, 852-8521, Japan

The ichthyotoxic flagellate Chattonella marina produces extraordinary levels of the reactive oxygen species (ROS) superoxide, which is partially controlled by electrons donated through photosynthetic electron transfer. We demonstrate that ROS can be significantly reduced using the photosynthesis blocking herbicide DCMU. As superoxide is considered a contributor to the toxicity of C. marina, fish mortality may be more prominent during daylight hours.


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Home page
 J PLANKTON RESHome page
D. Kim, T. Nakashima, Y. Matsuyama, Y. Niwano, K. Yamaguchi, and T. Oda
Presence of the distinct systems responsible for superoxide anion and hydrogen peroxide generation in red tide phytoplankton Chattonella marina and Chattonella ovata
J. Plankton Res., March 1, 2007; 29(3): 241 - 247.
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