Figure 5

Morphological differentiation of three plasmidless mutants of S. rochei and their chromosomal deletion. (a) Spore formation of S. rochei strains. Strains (2-39, YN-P7, YN-P145, and their parent 51252) were grown on YM agar medium at 28 °C for 5 days. (b) Scanning electron microscopy (SEM) of surface grown colonies. (c) Chromosomal deletions in mutants 2-39, YN-P7, and YN-P145.