The metabolism and biological activity of a 9-substituted cytokinin |
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| Authors: | Fox J E Sood C K Buckwalter B McChesney J D |
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| Affiliation: | Department of Botany, The University of Kansas, Lawrence, Kansas 66044. |
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| Abstract: | In order to test the metabolic stability of 9-substituted cytokinins, 6-benzylamino-9-methyl purine has been synthesized and labeled with 14C in the 9-methyl carbon or doubly labeled with 14C in the 9-methyl carbon and 3H in the methylene moiety of the side chain. Although the 6-benzylamino-9-methylpurine is chemically stable, cytokinin-requiring tissues begin removing the 9-substituent in as little as 10 minutes. Among the various metabolic products is free benzylaminopurine. Thus, the biological activity of 9-substituted cytokinins could be accounted for by their conversion to the free base. |
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