The effect of ethylene on root growth of Zea mays seedlings

Maureen C. Whalen; Lewis J. Feldman

doi:10.1139/b88-104

journal article Apr 01, 1988

The effect of ethylene on root growth of Zea mays seedlings

Maureen C. Whalen Lewis J. Feldman

Canadian Journal of Botany Vol. 66 No. 4 pp. 719-723 · Canadian Science Publishing

View at Publisher Save 10.1139/b88-104

Abstract

The control of primary root growth in Zea mays cv. Merit by ethylene was examined. At applied concentrations of ethylene equal to or greater than 0.1 μL L−1, root elongation during 24 h was inhibited. The half-maximal response occurred at 0.6 μL L−1 and the response saturated at 6 μL L−1. Inhibition of elongation took place within 20 min. However, after ethylene was removed, elongation recovered to control values within 15 min. Root elongation was also inhibited by green light. The inhibition caused by a 24-h exposure to ethylene was restricted to the elongating region just behind the apex, with inhibition of cortical cell elongation being the primary contributor to the effect. Based on use of 2,5-norbornadiene, a gaseous competitive inhibitor of ethylene, it was concluded that endogenous ethylene normally inhibits root elongation.

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Published: Apr 01, 1988
Vol/Issue: 66(4)
Pages: 719-723
License: View

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Cite This Article

Maureen C. Whalen, Lewis J. Feldman (1988). The effect of ethylene on root growth of Zea mays seedlings. Canadian Journal of Botany, 66(4), 719-723. https://doi.org/10.1139/b88-104

The effect of ethylene on root growth of Zea mays seedlings

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