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. 1967 May 19;156(3777):958-9.
doi: 10.1126/science.156.3777.958.

Ethylene and carbon dioxide: mediation of hypocotyl hook-opening response

Ethylene and carbon dioxide: mediation of hypocotyl hook-opening response

B G Kang et al. Science. .

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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