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Metabolism of N-(purin-6-yl)glycine by Soya Bean Callus
Authors:STADEN  J VAN; DREWES  S E
Institution:* Departments of Botany, University of Natal Pietermaritzburg 3200, Republic of South Africa
{dagger} Departments of Chemistry, University of Natal Pietermaritzburg 3200, Republic of South Africa
Abstract:The growth of cytokinin-dependent soya bean callus has beenshown to be accelerated by adding N-(purin-6-yl)glycine to themedium. Two biologically active peaks were detected when thecallus was cultured with N-(purin-6-yl)glycine. These two peaksco-chromatographed with 6-(2, 3, 4-trihydroxy-3-methylbutylamino)purineand zeatin respectively. When 14C labelled N-(purin-6-yl)glycinewas applied to the callus, radioactivity was found with boththese compounds irrespective of whether or not the N-(purin-6-yl)glycinewas labelled in the side chain or in the 8-position of the purinering. Small amounts of zeatin appear to be produced from N-(purin-6-yl)glycinewhich could explain why this compound stimulates the divisionof soya bean callus. N-(purin-6-yl)glycine, soya bean callus, metabolism, radioactivity, cytokinins
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