Formation of Cytokinin Nucleotides in a Detached Inflorescence Stalk and the Occurrence of Nucleotides in Phloem Exudates from Attached Yucca Plants

Autor:	C. R. Vonk
Rok vydání:	1978
Předmět:	chemistry.chemical_classification Exudate Physiology fungi food and beverages Xylem Cell Biology Plant Science General Medicine Metabolism Biology chemistry.chemical_compound chemistry Biochemistry Adenine nucleotide Cytokinin Botany Genetics medicine Nucleotide Phloem Zeatin medicine.symptom
Zdroj:	Physiologia Plantarum. 44:161-166
ISSN:	1399-3054 0031-9317
DOI:	10.1111/j.1399-3054.1978.tb08612.x
Popis:	The metabolism of isopentenyl adenine, Δ-isopentenyl pyrophosphate, DL-mevalonic acid and adenine in detached inflorescence stalks of Yucca has been studied using radioactive tracer techniques. Xylem feeding of detached stalks with Δ-isopentenyl pyrophosphate, DL-mevalonic acid or adenine did not result in the formation of zeatin- or isopentenyl adenine cytokinins. In contrast isopentenyl adenine fed to a detached inflorescence stalk lead to the formation of isopentenyl- and zeatin nucleotides in the exudate. After alkaline phosphatase treatment of this exudate an unknown compound, presumably isopentenyl adenine-7-glucoside was also detected. The same compound was found after incubation of phloem exudate with isopentenyl adenine. The occurrence of both zeatin- and isopentenyl adenine nucleotides in phloem exudate from an attached inflorescence stalk of Yucca is described.
Databáze:	OpenAIRE
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