PHYTOCHROME INTERMEDIATES IN VIVO– III KINETIC ANALYSIS OF INTERMEDIATE REACTIONS AT LOW TEMPERATURE
- 1 August 1973
- journal article
- Published by Wiley in Photochemistry and Photobiology
- Vol. 18 (2) , 153-159
- https://doi.org/10.1111/j.1751-1097.1973.tb06406.x
Abstract
Abstract— Kinetic experiments have provided evidence for a series of light and dark reactions of phytochrome intermediates at low temperature in Pisum epicotyl tissue. A photoequilibrium exists between Pr and P698, and between Pfr and P650. A dark reversion of P698Pr and P650pfr at –70°C has been demonstrated. When cooled to 70°C under incandescent light, most of the phytochrome in the tissue is driven into photochemically unreactive intermediates. About 2% of the phytochrome remains as weakly absorbing intermediates that form Pr and Pfr in darkness. A scheme is presented for phytochrome phototransformation in vivo.This publication has 21 references indexed in Scilit:
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