Abstract
The generation of superoxide anion radical (O 2− , believed to be a causative factor in the killing of fish by the phytoplankton Chattonella antiqua , has been examined using several methods: electrochemical technique, reduction of ferricytochrome c and fluorescent laser microscope. Evidence is presented to suggest that these organisms release superoxide continuously while they are living, even in the resting state. Additional generation of O 2− accompanies the discharge of mucocysts, and is triggered when they are exposed to mucus from the gill lamellae of fish. Such instantaneous generation of O 2− is also induced when the organisms are in contact with an electrode poised at a potential of +0.1 V versus Ag/AgCI, which is positive enough to oxidize O 2− to O 2 .
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
