Photomorphogenesis in Penicillium isariiforme II. The action spectrum for light-induced formation of coremia

The action spectrum for the development of coremia in P. isariiforme was determined by means of cyclic illumination. This spectrum shows a peak at 470 nm to 480 nm. It resembles the action spectrum for light-induced sporulation in the same fungus, but gives no further information about the photoreceptor. Possibly an unknown pigment causes a distortion of the action spectrum in this fungus.