Summary: Electron microscope observations were made on submerged cultures in defined medium of two species of the genus Streptomyces. The evidence obtained confirms the supposition of Klieneberger-Nobel (1947), with surface cultures of four other species, that at an early stage in the life history of the organism concerned, fusion occurs between portions of the same or different hyphae, culminating in the formation of ‘initial cells’. In S. griseus initial cells were observed at 26 hr. and as late as 6 days. Certain unidentified bodies were observed. These may be related to initial cell formation.
Bergey’s Manual of Determinative Bacteriology1948, 6th edition.
BreedR. S.,
MurrayE. G. D.,
HitchensA. P.
Edited by London: Baillière, Tindall and Cox;
BissetK. A.,
MooreF. W.1949; The relationship of certain branched bacterial genera. J. gen. Microbiol 3:387