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Plant Physiol. 1981 Mar;67(3):460-6.

Ethylene Effects in Pea Stem Tissue : EVIDENCE OF MICROTUBULE MEDIATION.

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1
Department of Biology, Loma Linda University, Loma Linda, California 92354.

Abstract

The marked effects of ethylene on pea stem growth have been investigated. Low temperature and colchicine, both known microtubule depolymerization agents, reverse the effects of ethylene in straight growth tests. Low temperature (6 C) also profoundly reduces the effects of gas in terms of swelling, hook curvature, and horizontal nutation. Deuterium oxide, an agent capable of rigidifying microtubular structure, mimics the effects of ethylene. Electron microscopy shows that microtubule orientation is strikingly altered by ethylene. These findings indicate that some of the ethylene responses may be due to a stabilizing effect on microtubules in plant cells.

PMID:
16661694
PMCID:
PMC425705
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