Abstract
Light-induced fluorescence decay was examined during the greening of control and lincomycintreated maize (Zea mays L.) leaves. Assuming that this decay to a first approximation is the result of two parallel first-order reactions, the fluorescence induction curves were linearized on the logarithm plot and the parameters were determined. The variable fluorescence increased, and the parameters of the two linear sections of the fluorescence decay—that is, the kinetics of the induction curves—changed during the greening of the control leaves. Lincomycin treatment caused some chlorophyll deficiency and the lowering of the chlorophyll a/b ratio, changed the fluorescence emission spectra and the effect of Mg2+ on the regulation of the excitation energy distribution. The structure of the thylakoids and the kinetics of the fluorescence decay were also changed in the treated leaves. The possible relationship between the change of the kinetics of the fluorescence decay and the change of spillover during greening and after lincomycin treatment is discussed.
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Abbreviations
- LHC:
-
light-harvesting complex
- Chl:
-
chlorophyll
- LM:
-
lincomycin
- PS:
-
photosystem
- DCMU:
-
3-(3,4-dichlorophenyl)-1,1-dimethylurea
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Sárvári, É., Halász, G., Török, S. et al. Light-induced fluorescence decay during the greening of normal and lincomycin-treated maize leaves. Planta 141, 135–139 (1978). https://doi.org/10.1007/BF00387879
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DOI: https://doi.org/10.1007/BF00387879