[Nature of the afterglow of marine algae].
Excitation spectra and light curves were studied in three species of marine algae at monochromatic light excitation of the second-range afterglow. It was shown that light curves were satisfactorily described by an equation similar to the equation of enzyme catalysis with low light intensity of half-saturation (about 0.5 W X m-2). Shapes of the excitation spectra and spectral curves of quantum yield of the second-range afterglow was analysed considering the early non-linearity of its light curves. It was found that the results obtained and the literature data on a relatively high quantum yield of the second-range afterglow in the region of absorption of long-wave pigment system (above 680 nm) can be explained by the non-linearity mentioned above, not suggesting a participation of PSI in the generation of this afterglow.
D000460:Chlorophyta / Q000502:physiology* / Q000528:radiation effects; D056890:Eukaryota / Q000502:physiology*; D008027:Light; D049449:Luminescence; D000459:Phaeophyceae / Q000502:physiology* / Q000528:radiation effects; D010860:Pigments, Biological / Q000502:physiology*
D010860:Pigments, Biological
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