Effect of Peroxydisulfate on Vigna radiatu Abscission

概要

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K_2S_2O_8, applied to the basal end of cuttings of Vigna radiata stimulated leaf abscission in the light or dark. Because inhibition of leaf sbscission in the dark by IAA was completely abolished by K_2S_2O_8, and IAA decreased stimulation of abscission by K_2S_2O_8, destruction of IAA in the cuttings by K_2S_2O_8 is indicated. K_2S_2O_8 had no effect on leaf abscission when applied as a foliar spray or when roots of undisturbed seedlings were treated. When applied proximally or distally to leafless explants, K_2S_2O_8 inhibited petiole abscission, and neither IAA nor ethylene had an effect on the inhibition. Although K_2S_2O_8 destroyed IAA in vitro, it had no effect on abscission inhibitors in macerates of Vigna leaves and corn roots, nor did it destroy the biological activity of IAA added to such macerates. Substances liberated by maceration may interfere with the ability of K_2S_2O_8 to destroy IAA.
日本植物生理学会の論文