DISTRIBUTION AND ALGAL-LYSING ACTIVITY OF FRUITING MYXOBACTERIA IN LAKE SUWA1

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  • 1

    Received 9 May 1988. Accepted 21 May 1990.

  • We wish to express our thanks to Drs. H. Hayashi and T. Okino, Shinshu University, for their valuable suggestions and considerable assistance in our field survey. This work was supported by Grant-in-Aid for special Project Research, No. 60129034 from The Ministry of Education, Science and Culture, Japan.

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ABSTRACT

The seasonal distribution of fruiting myxobacteria, which are able to lyse cyanobacteria in the water and sediments of eutrophic lakes, was determined periodically in 1985 and 1986. Fruiting myxobacteria isolated from sediments of these sites were found to have a lytic effect on a wide variety of cyanobacteria. The myxobacterium isolate designated as S-1-8 was identified as Myxococcus fulvus Cohn. Lytic activity for cyanobacteria was produced during growth of the organism in a number of complex media. The maximal amount of activity was produced in casitone-yeast media and at the end of the log phase of growth.

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