An Explanation of the Inhibition of Root Growth Caused by Indole-3-Acetic Acid
- 1 March 1967
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 42 (3), 415-420
- https://doi.org/10.1104/pp.42.3.415
Abstract
Low concentrations of IAA inhibit the growth of pea root sections by inducing the formation of the growth regulator, ethylene gas. Ethylene is produced within 15 to 30 min. after IAA is applied and roots begin to swell immediately after they are exposed to the gas. Carbon dioxide competitively inhibits ethylene action in roots, impedes their geotropic response, and partially rein-slates auxin inhibited growth. These effects were investigated using root tissue from other species. In general, ethylene participates in the geotropic response of roots, but not that of stems.This publication has 9 references indexed in Scilit:
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