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  • Title: Ethylene and carbon dioxide: mediation of hypocotyl hook-opening response.
    Author: Kang BG, Yocum CS, Burg SP, Ray PM.
    Journal: Science; 1967 May 19; 156(3777):958-9. PubMed ID: 6023263.
    Abstract:
    Ethylene at low concentrations inhibits the light-induced opening of the bean hypocotyl hook; auxin inhibits the opening by inducing production of ethylene. Light causes a decrease in ethylene production and an increase in the production of carbon dioxide. Hook opening appears to be a response in which ethylene serves as a natural growth regulator and in which carbon dioxide may be involved also as a growth regulator through its antagonism of the action of ethylene.
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