The effect of abscisic acid on the metabolism of kinetin in detached leaves of Rumex pulcher

A. Back, S. Bittner, A. E. Richmond

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Abstract

The effect of abscisic acid (ABA) and of gibberellic acid (GA2) on the metabolism of kinetin in detached leaves was investigated. Kinetin labelled in either the purine ring or the N-6 substituted side chain was fed into leaves of Rumex pulcher. The leaves were extracted 4 or 20 h later and the extract chromatographed on paper which was subsequently scanned for radioactivity. Four major radioactive peaks were revealed. Two peaks were tentatively identified, one kinetin and its riboside, and the other adenine. ABA effected a significant decrease in the transformation of kinetin to adenine while GA3 had no consistent effect. The possible meaning of this finding is discussed.

Original languageEnglish
Pages (from-to)744-750
Number of pages7
JournalJournal of Experimental Botany
Volume23
Issue number3
DOIs
StatePublished - 1 Aug 1972
Externally publishedYes

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