Figure 1.

Diagrams illustrating photomorphogenesis during fruiting-body development in C. cinereus. When the fungus is cultured under the 12 hr light/12 hr dark cycle, the mature fruiting body is formed. The first 5 min of light (500 lx) on the first day triggers fruiting-body maturation (top) (Kamada et al. 1978). When the fungus was cultured in continuous darkness, the primordium never proceeded to the fruiting-body maturation phase. Instead, the primordial shaft, which is a basal part of the primordium, elongated, producing the dark stipe (bottom).