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. 1991 Sep;97(1):118-21.
doi: 10.1104/pp.97.1.118.

Action Spectrum for the Light-Dependent Step in Gametic Differentiation of Chlamydomonas reinhardtii

H Weissig  1 , C F Beck
Affiliations

Action Spectrum for the Light-Dependent Step in Gametic Differentiation of Chlamydomonas reinhardtii

H Weissig et al. Plant Physiol. 1991 Sep.

Abstract

Differentiation of Chlamydomonas reinhardtii vegetative cells to gametes requires two environmental signals: nitrogen starvation and light. Vegetative cells incubated without nitrogen differentiate into pregametes. Pregametes can be converted into sexually mature gametes by irradiation with light. The action spectrum for the light-dependent step in gamete formation showed two maxima at 370 and 450 nanometers. This is similar to the spectrum of other blue light/ultraviolet light-A-absorbing photoreceptors.

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