Phytochrome Control of Maize Coleoptile Section Elongation : A RAPID LOSS OF PHOTOREVERSIBILITY
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Updated: Aug 8, 2026

Improved Methods for Preparing Transverse Sections and Unrolled Whole Mounts of Maize Leaf Primordia for Fluorescence and Confocal Imaging
Published on: September 22, 2023
T J Warner1, J D Ross, J Coombs
1Department of Botany, University of Reading, Whiteknights, Reading, RG2 6AS, United Kingdom.
Abstract:
A rapid loss of far red light (FR) reversibility of red-light (R) stimulated elongation of maize coleoptile sections was observed. Reversal was not possible when the interval between R and FR treatment was greater than 45 seconds. Most of the R-stimulated elongation occurred during the first 15 hours after irradiation.Exogenous gibberellic acid did not alter the time course of R/FR reversibility loss. These results are interpreted as indicating independence of R- and gibberellic acid-stimulated elongation in this system.
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