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. 1972 Jul;50(1):117–124. doi: 10.1104/pp.50.1.117

Effect of Ethylene on Cell Division and Deoxyribonucleic Acid Synthesis in Pisum sativum1

Akiva Apelbaum a,2, Stanley P Burg b
PMCID: PMC367326  PMID: 16658105

Abstract

Ethylene and supraoptimal levels of 2,4-dichlorophenoxyacetic acid inhibit the growth of the apical hook region of etiolated Pisum sativum (var. Alaska) seedlings by stopping almost all cell divisions. Cells are prevented from entering prophase. The hormones also retard cell division in intact root tips and completely stop the process in lateral buds. The latter inhibition is reversed partially by benzyl adenine. In root tips and the stem plumular and subhook regions, ethylene inhibits DNA synthesis. The magnitude of this inhibition is correlated with the degree of repression of cell division in meristematic tissue, suggesting that the effect on cell division results from a lack of DNA synthesis. Ethylene inhibits cell division within a few hours with a dose-response curve similar to that for most other actions of the gas. Experiments with seedlings grown under hypobaric conditions suggest that the gas naturally controls plumular expansion and cell division in the apical region.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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