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Science 19 May 1967:
Vol. 156. no. 3777, pp. 958 - 959
DOI: 10.1126/science.156.3777.958
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Articles

Ethylene and Carbon Dioxide: Mediation of Hypocotyl Hook-Opening Response

Bin G. Kang 1, Conrad S. Yocum 1, Stanley P. Burg 2, and Peter M. Ray 3

1 Department of Botany, University of Michigan, Ann Arbor
2 Department of Phiysiology, University of Miami Schlool of Medicine, Miami, Florida
3 Division of Natural Scienices, University of California. Santa Cruz

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.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Hormonal Regulation in Higher Plants.
A. W. Galston and P. J. Davies (1969)
Science 163, 1288-1297
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Science. ISSN 0036-8075 (print), 1095-9203 (online)