Nse regulator, WhiI (Fig. 3).The key developmental regulator AdpA emerged along with complex mycelial growth and is bldA-dependent only in StreptomycineaeBldD targets also include adpA, known as bldH in S. coelicolor (den Hengst et al., 2010). AdpA has been most comprehensively described in S. griseus, in which it is the agent of the effects of the hormone-like A-factor (Horinouchi, 2002). It comp