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Activity of the natural algicide, cyanobacterin, on eukaryotic microorganisms

1986; Oxford University Press; Volume: 33; Issue: 1 Linguagem: Inglês

10.1111/j.1574-6968.1986.tb01217.x

1574-6968

Florence K. Gleason, Cheryl A. Baxa,

Biocrusts and Microbial Ecology

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.