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. 1975 Dec;56(6):757–760. doi: 10.1104/pp.56.6.757

Effect of Gibberellic Acid on the Plasticity and Elasticity of Avena Stem Segments 1

Paul A Adams a,2, Michael J Montague a,3, Mark Tepfer a,4, David L Rayle a,5, Hiroshi Ikuma a, Peter B Kaufman a,6
PMCID: PMC541918  PMID: 16659388

Abstract

Extensibility characteristics of Avena stem segments treated with gibberellic acid (GA) were investigated in living internodes using a microgrowth method and in partially extracted cell walls subjected to Instron extensometer analysis. Both techniques showed that treatment with GA greatly increases internodal plasticity, but has virtually no effect on internodal elasticity. The increase in plasticity occurred 1 to 2 hours after the initiation of hormone treatment, which is similar to the time of onset of GA-enhanced growth and cell wall synthesis. Cycloheximide was shown to inhibit the effect of GA on plasticity.

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Selected References

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

  1. Adams P. A., Kaufman P. B., Ikuma H. Effects of gibberellic Acid and sucrose on the growth of oat (Avena) stem segments. Plant Physiol. 1973 Jun;51(6):1102–1108. doi: 10.1104/pp.51.6.1102. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Cleland R., Thompson M. L., Rayle D. L., Purves W. K. Difference in effects of gibberellins and auxins on wall extensibility of cucumber hypocotyls. Nature. 1968 Aug 3;219(5153):510–511. doi: 10.1038/219510a0. [DOI] [PubMed] [Google Scholar]
  3. Kaufman P. B., Ghosheh N., Ikuma H. Promotion of growth and invertase activity by gibberellic Acid in developing Avena internodes. Plant Physiol. 1968 Jan;43(1):29–34. doi: 10.1104/pp.43.1.29. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Lockhart J. A. Intracellular Mechanism of Growth Inhibition by Radiant Energy. Plant Physiol. 1960 Jan;35(1):129–135. doi: 10.1104/pp.35.1.129. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Montague M. J., Ikuma H., Kaufman P. B. On the nature of the physiological responses of Avena stem segments to gibberellic Acid treatment. Plant Physiol. 1973 Jun;51(6):1026–1032. doi: 10.1104/pp.51.6.1026. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Montague M. J., Ikuma H. Regulation of cell wall synthesis in Avena stem segments by gibberellic Acid. Plant Physiol. 1975 Jun;55(6):1043–1047. doi: 10.1104/pp.55.6.1043. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Tagawa T., Bonner J. Mechanical Properties of the Avena Coleoptile As Related to Auxin and to Ionic Interactions. Plant Physiol. 1957 May;32(3):207–212. doi: 10.1104/pp.32.3.207. [DOI] [PMC free article] [PubMed] [Google Scholar]

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