Activity of the natural algicide, cyanobacterin, on eukaryotic microorganisms |
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Authors: | Florence K Gleason Cheryl A Baxa |
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Institution: | Gray Freshwater Biological Institute, University of Minnesota, P.O. Box 100, Navarre, MN 55392, U.S.A. |
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Abstract: | Abstract The natural product cyanobacterin has been shown to be toxic to most cyanobacteria at a concentration of approx. 5 μM. We demonstrate here that cyanobacterin will also inhibit the growth of most eukaryotic algae at a similar concentration. Some algae, such as Euglena gracilis , are resistant because they are able to maintain themselves by heterotrophic nutrition. Others, such as Chlamydomonas reinhardtii , can apparently induce a detoxification mechanism to maintain photosynthesis in the presence of low concentrations of the inhibitor. Non-photosynthetic microorganisms are not affected by cyanobacterin. |
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Keywords: | Algae fungi photosynthesis resistance |
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