Open AccessKINETIC STUDIES OF THE TWO LIGHT REACTIONS IN PHOTOSYNTHESIS
Author(s) -
I.D. Kuntz,
Melvin Calvin
Publication year - 1964
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/920075
Subject(s) - wavelength , absorbance , photosynthesis , kinetics , excitation , kinetic energy , chemistry , red light , drop (telecommunication) , optics , photochemistry , physics , botany , biology , telecommunications , computer science , biochemistry , quantum mechanics
The decay kinetics of the photo-induced absorbance changes in red and green algae are very sensitive to the wavelength of the actinic 11ght. A four to twofold increase in half-decay time is noted in going from short wavelength (550-650 mu) to long wavelength (> 700 mu) excitation. The slow decay ratios, produced by long wavelength light can be enhanced with a steady background of short wavelength light. A relationship between initial decay rates and 02 evolution rates is described. This relationship allows a direct correspondence between these spectroscopic studies and the 'red-drop' and 'enhancement' experiments of Emerson
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