Abstract
Auxin (indole-3-acetic acid) enhances movement of tritiated water into and out of stem segments of etiolated peas. The time required for water in the tissue to attain one-half equilibrium with water in the surrounding solution is significantly shorter and the initial flux rate is higher in auxin-treated sections. The response is one of the most rapid to auxin, occurring well within 1 min after application of the hormone. This suggests that an action of auxin on the membrane system occurs before or coincident with auxin-induced enhancement of growth and wall elastic extensibility.
Keywords: pea-stem sections, growth enhancement
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Selected References
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- Baker D. B., Ray P. M. Relation between Effects of Auxin on Cell Wall Synthesis and Cell Elongation. Plant Physiol. 1965 Mar;40(2):360–368. doi: 10.1104/pp.40.2.360. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Barkley G. M., Evans M. L. Timing of the auxin response in etiolated pea stem sections. Plant Physiol. 1970 Feb;45(2):143–147. doi: 10.1104/pp.45.2.143. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Evans M. L., Ray P. M. Timing of the auxin response in coleoptiles and its implications regarding auxin action. J Gen Physiol. 1969 Jan;53(1):1–20. doi: 10.1085/jgp.53.1.1. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Harris R. A., Penniston J. T., Asai J., Green D. E. The conformational basis of energy conservation in membrane systems. II. Correlation between conformational change and functional states. Proc Natl Acad Sci U S A. 1968 Mar;59(3):830–837. doi: 10.1073/pnas.59.3.830. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Jaffe M. J., Galston A. W. Physiological studies on pea tendrils. I. Growth and coiling following mechanical stimulation. Plant Physiol. 1966 Jun;41(6):1014–1025. doi: 10.1104/pp.41.6.1014. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Jaffe M. J., Galston A. W. Physiological studies on pea tendrils. V. Membrane changes and water movement associated with contact coiling. Plant Physiol. 1968 Apr;43(4):537–542. doi: 10.1104/pp.43.4.537. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kang B. G., Newcomb W., Burg S. P. Mechanism of Auxin-induced Ethylene Production. Plant Physiol. 1971 Apr;47(4):504–509. doi: 10.1104/pp.47.4.504. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Ordin L., Applewhite T. H., Bonner J. Auxin-Induced Water Uptake by Avena Coleoptile Sections. Plant Physiol. 1956 Jan;31(1):44–53. doi: 10.1104/pp.31.1.44. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Ordin L., Kramer P. J. Permeability of Vicia Faba Root Segments to Water as Measured by Diffusion of Deuterium Hydroxide. Plant Physiol. 1956 Nov;31(6):468–471. doi: 10.1104/pp.31.6.468. [DOI] [PMC free article] [PubMed] [Google Scholar]
- SACHER J. A., GLASZIOU K. T. Effects of auxins on membrane permeability and pectic substances in bean endocarp. Nature. 1959 Mar 14;183(4663):757–758. doi: 10.1038/183757b0. [DOI] [PubMed] [Google Scholar]
- Thimann K. V., Samuel E. W. THE PERMEABILITY OF POTATO TISSUE TO WATER. Proc Natl Acad Sci U S A. 1955 Dec 15;41(12):1029–1033. doi: 10.1073/pnas.41.12.1029. [DOI] [PMC free article] [PubMed] [Google Scholar]