Plant Physiol. Drug Metab Dispos
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Plant Physiology 65:852-854 (1980)
© 1980 American Society of Plant Biologists

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Articles

Endogenous Cytokinins in Bougainvillea `San Diego Red'

I. OCCURRENCE OF CYTOKININ GLUCOSIDES IN THE ROOT SAP 1

Johannes van Staden2 and Gerard G. Dimalla

Department of Environmental Horticulture, University of California, Davis, California 95616

Using chromatographic, chemical, and enzymic techniques, 11 compounds capable of stimulating the division of soybean callus cells were tentatively identified in the root sap of Bougainvillea `San Diego Red.' These cytokinin-like compounds included phosphorylated and glucosylated forms of zeatin, ribosylzeatin, and their dihydro derivatives. In addition, isopentenyl adenosine and isopentenyl adenine were apparently also present. The occurrence of glucosylated derivatives in the root sap of plants has not been substantiated previously.

2 Permanent address: Department of Botany, University of Natal, Pietermaritzburg 3200 Republic of South Africa.

1 The senior author was supported by a grant from the Council for Scientific and Industrial Research, Pretoria, Republic of South Africa.






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Copyright © 1980 by the American Society of Plant Biologists