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Plant Physiology 49:848-851 (1972)
© 1972 American Society of Plant Biologists

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Articles

Cytokinins in Pisum Transfer Ribonucleic Acid 1

Hendrik J. Vremana and Folke Skooga

Charles R. Frihartb and Nelson J. Leonardb

a Institute of Plant Development, Birge Hall, University of Wisconsin, Madison, Wisconsin 53706, b School of Chemical Sciences, University of Illinois, Urbana, Illinois 61801

Five cytokinin-active ribonucleosides have been isolated from the transfer RNA of 7-day-old green pea shoots (Pisum sativum L. var. Alaska). Ultraviolet spectroscopy and mass spectrometry have been used to identify 6-(3-methyl-2-butenylamino)-9-{beta}-D-ribofuranosylpurine, 6-(4-hydroxy-3-methyl-2-butenylamino)-2-methylthio-9-{beta}- D-ribofuranosylpurine, and 6-(4-hydroxy-3-methyl-2-butenylamino)-9-{beta}-D-ribofuranosylpurine. The latter was separated into the cis- and trans-isomers by thin layer chromatography. The fifth cytokinin is indicated to be 6-(3-methyl-2-butenylamino)-2-methylthio-9-{beta}-D -ribofuranosylpurine on the basis of its chromatographic properties.

1 This research was supported at the University of Wisconsin by National Science Foundation Research Grant GB-25812 and by the Research Committee of the Graduate School with funds from the Wisconsin Alumni Research Foundation. This research was supported at the University of Illinois by National Institutes of Health Research Grant GM-05829.






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Copyright © 1972 by the American Society of Plant Biologists