Cytokinin biochemistry in relation to leaf senescence. II. The metabolism of 6-benzylaminopurine in soybean leaves and the inhibition of its conjugation

The metabolism of [3H]6-benzylamino purine was studied in presenescent and early senescent soybean (Glycine max [L.] Merr.) leaves. In both types of leaves, the metabolism was essentially the same. The principal metabolite was identified as β-(6-benzylaminopurin-9-yl)alanine by mass spectral studies...

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Veröffentlicht in:Plant physiology (Bethesda) 1987-02, Vol.83 (2), p.334-340
Hauptverfasser: Zhang, Ren, Letham, David S., O. Choon Wong, Noodén, Larry D., Parker, Charles W.
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Sprache:eng
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Zusammenfassung:The metabolism of [3H]6-benzylamino purine was studied in presenescent and early senescent soybean (Glycine max [L.] Merr.) leaves. In both types of leaves, the metabolism was essentially the same. The principal metabolite was identified as β-(6-benzylaminopurin-9-yl)alanine by mass spectral studies, which included discharge ionization-secondary ion mass spectrometry and pulsed positive ion-negative ion-chemical ionization mass spectrometry. Conversion to this alanine conjugate was found to be inhibited 2,4-dichlorophenoxyacetic acid and 5,7-dichloroindoleacetic acid.
ISSN:0032-0889
1532-2548
DOI:10.1104/pp.83.2.334