PHOTOMORPHOGENESIS IN PENICILLIUM ISARIIFORME I. THE ACTION SPECTRUM FOR LIGHT-INDUCED SPORULATION

Abstract

The influence of light upon sporulation in Penicillium isariiforme was studied by determination of the action spectrum for this reaction. This action spectrum, with a single peak at 470–480 nm, differs strongly from action spectra obtained for other light-sensitive fungi. This may be caused by a different photoreceptor being present in this fungus or by a distortion by an unknown pigment.