Effects of adenyl cytokinins on the solutes of cultured cells |
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| Authors: | Frederick Campion Steward Ralph Lionel Mott Gordon Shaw |
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| Affiliation: | Laboratory for Cell Physiology, Growth and Development, Cornell University, lthaca, NY 14850, U.S.A. and Department of Chemistry, University of Bradford, Yorks. BD7 1DP USA |
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| Abstract: | When zeatin acts upon cultured carrot explants in a basal medium lacking IAA its most significant effect is to increase the Na+/K+ ratio. In the presence of IAA, zeatin greatly stirnulates cell multiplication and the Na+/K+ ratio is then low. The effect of a series of N 6-substituted adenines with side chains (-CH2)nH varying from 1 to 10 have been tested for their effect upon cell multiplication and cell size and upon the total osmotic value and the relative concentrations of Na+, K+ and Cl? in the cells. Whereas the maximum response in terms of cell multiplication occurred with the compound having a ?(CH2)5 · H sidechain, the maximum effect on the Na+/K+ ratio of the cultured cells as so grown was caused when the side chain was ?(CH24H. |
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| Keywords: | Umbelliferae carrot tissue culture cytokinins zeatin osmotic value. |
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