RADIOKINETIC EVIDENCES FOR THE BIPARTITE OR DIPLOID NUCLEUS IN CONIDIA OF STREPTOMYCES GRISEOFLAVUS

Abstract

In contrast to several species of Streptomyces which revealed exponential survival curves by X-ray inactivation tests, Str. Griseoflavus and auxotrophic mutants of the strain gave apparently "two-hit" curves. On the ground of the interrelation between radiokinetic and biological findings, a proposal that the conidium of Str. Griseoflavus comprises a bipartite or diploid nucleus in each cell was presented.