Ethylene production by cress roots and excised cress root segments and its inhibition by 3,5-diiodo-4-hydroxybenzoic acid

摘要

3,5-Diiodo-4-hydroxybenzoic acid (DIHB) has been shown to exert an inhibitory effect on the formation of ethylene by the roots of intact cressLepidium sativumseedlings in light, and by excised cress root segments. Adding IAA to the culture solution greatly promoted ethylene production, which was suppressed by DIHB. The findings together with results obtained with dinitrophenol (DNP), L-methionine and L-ethionine and also the horseradish peroxidase/methional system of Yang are discussed.