Autoradiographic Studies of [ methyl - 3 H]Thymidine Incorporation in a Cyanobacterium ( Microcystis wesenbergii )-Bacterium Association and in Selected Algae and Bacteria

Abstract

The present investigation showed by means of autoradiography that the cyanobacterium Microcystis wesenbergii did not incorporate [ 3 H]thymidine at nanomolar concentrations, whereas its associated heterotrophic bacteria appearing in the gelatinous cover of the cyanobacterium became labeled. Several other tested cyaobacteria and algae did not incorporate [ 3 H]thymidine.