Abstract
THE inhibitory effect of white light on the elongation of the primary roots of wheat and rice seedlings has been reported1–4. It would seem that light affects the ability of the cells to increase in length and also reduces the meristematic activity of the root1,4; the latter process may be dependent on the wavelength of the incident radiation4. Other studies here have shown that the chemical 3,5-diiodo-4-hydroxybenzoic acid (DIHB) can completely remove the inhibitory effect of light on the roots of rice and cress seedlings. This was achieved mainly by enhancement of cell elongation and not by stimulation of cell multiplication5,6.
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WILKINS, H., LARQUÉ-SAAVEDRA, A. & WAIN, R. Control of Zea root elongation by light and the action of 3,5-diiodo-4-hydroxybenzoic acid. Nature 248, 449–450 (1974). https://doi.org/10.1038/248449a0
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DOI: https://doi.org/10.1038/248449a0
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