CONTROL BY PHYTOCHROME OF CHLOROPHYLL SYNTHESIS IN SEEDLINGS OF SORGHUM VULGARE |
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| Authors: | S Sawhney H Oelze-Karow N Sawhney H Mohr |
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| Institution: | Biological Institute II, University of Freiburg i. Br., D-78 Freiburg, Schänzlestrasse I, W. Germany |
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| Abstract: | The strong effect of light pretreatments on the synthesis of chlorophyll-a and-b in the shoot of Sorghum vulgare (kept under saturating white light) can be attributed to phytochrome only. No specific blue light effect was found. The phytochrome system appears to function perfectly normally under these conditions. Escape from reversibility is not detectable up to approximately 40 min after the onset of an inductive red light pulse. Thereafter, escape is fast, being completed at approximately 2.5 h after the inductive light pulse. |
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