FIG. 9.

Northern blot analysis of the gene cluster essential for TP production. Total RNA was isolated from S. griseolosporeus strain MF730-N6 grown at 30°C for 2 days and analyzed by Northern blotting using the XbaI-HindIII fragment carrying the two cyclase genes as a probe (Fig. 1). The arrowheads indicate the positions of 23S and 16S rRNAs and the sizes of hybridized fragments. A background signal due to hybridization to degraded RNAs occurred.