Cytokinin-like activities of nucleocyclitols

Abstract

Listen

Translate article

Although the 9-substituted adenines are commonly inactive as cytokinins, the nucleocyclitol 3-(-adenin-9-yl)-3-deoxy-1,5,6-tri-0-(methylsulfonyl)-muco-inositol (NI) proved to be active in the following bioassays: cell proliferation in soybean cotyledon callus tissue, cell expansion in excised radish cotyledons, and delay of senescence in detached leaves. In these assays, the effect of the compound, applied at the same molar concentration as benzyl adenine, was lower or less uniform than BA. NI completely failed to promote germination of lettuce seeds in conditions of secondary dormancy or thermodormancy, whre BA is effective. NI can substitute for BA in some though not all of the numerous responses evoked by cytokinins.