Investigations on the presence of cyanophages in fresh and sea waters of Romania.

Investigations on the presence of cyanophages in the fresh and sea waters of Romania resulted in the isolation of 31 strains. The host range of the cyanophage isolates showed some particularities as compared with classical cyanophages types. The electron optic study of the cyanophage strains grown in Phormidium sp. revealed the presence of three types of virus particles, differing as regards their tail length, with a morphology similar to that of T-odd coliphages.