The Metabolism and Biological Activity of a 9-Substituted Cytokinin | Zendy

Joan E.B. Fox | Zendy; Chander K. Sood | Zendy; Brian L. Buckwalter | Zendy; James D. McChesney | Zendy

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The Metabolism and Biological Activity of a 9-Substituted Cytokinin

Author(s) -

Joan E.B. Fox,

Chander K. Sood,

Brian L. Buckwalter,

James D. McChesney

Publication year - 1971

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.47.2.275

Subject(s) - cytokinin , substituent , moiety , purine , chemistry , metabolism , methylene , stereochemistry , methylene blue , biological activity , carbon chain , metabolic pathway , purine metabolism , biochemistry , organic chemistry , in vitro , catalysis , gene , enzyme , photocatalysis , auxin

In order to test the metabolic stability of 9-substituted cytokinins, 6-benzylamino-9-methyl purine has been synthesized and labeled with (14)C in the 9-methyl carbon or doubly labeled with (14)C in the 9-methyl carbon and (3)H 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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