Plant Physiol. Journal of Pharmacology and Experimental Therapeutics
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Plant Physiology 49:338-340 (1972)
© 1972 American Society of Plant Biologists

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Articles

An Action Spectrum for Light-induced Primordium Formation in a Basidiomycete, Favolus arcularius (FR) AMES

Y. Kitamoto1, A. Suzuki and S. Furukawa

a The Research Institute for Food Science and Laboratory of Applied Botany, Faculty of Agriculture, Kyoto University, Kyoto, Japan

The action spectrum for the initiation of fruiting (primordium formation) in Favolus arcularius was determined on the equal response basis. The detectable effect of light was observed in the region between 350 to 560 nanometers, showing six distinct peaks at 374, 398, 424, 446, 480, and 514 nanometers. The half maximum response is reached with 1.8 x 108 ergs per cm2 at the most effective wavelength, 398 nanometers. Since the inhibitors, diphenylamine and quinacrine, had no consistent effect on the primordium formation, it is suggested that the possible photoreceptor pigment(s) may be neither carotenoid nor flavinoid.

Comparing the action spectrum with those for some other fungi, the possibility that the photoreceptor system of this fungus may consist of two pigments is discussed.

1 Present address: Department of Agricultural Chemistry, Faculty of Agriculture, Tottori University, Tottori, Japan.






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