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. 1974 Jan;53(1):125–127. doi: 10.1104/pp.53.1.125

A Water Potential Threshold for the Increase of Abscisic Acid in Leaves 1

Thomas J Zabadal a,2
PMCID: PMC541347  PMID: 16658642

Abstract

A relationship between abscisic acid concentration and leaf water status is reported. Water potentials were measured in leaves of Ambrosia artemisiifolia L. and Ambrosia trifida L. throughout a period of dehydration of intact plants. Tissues from the same leaves were analyzed for abscisic acid. For both species, abscisic acid began to increase in a critical water potential range (−10 to −12 atmospheres). These data suggest a threshold water potential that stimulates abscisic acid synthesis. The data support the hypothesis that a small change in water potential could affect stomatal resistance to water loss by means of a very sensitive chemical feedback control mechanism.

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Selected References

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

  1. Boyer J. S. Leaf enlargement and metabolic rates in corn, soybean, and sunflower at various leaf water potentials. Plant Physiol. 1970 Aug;46(2):233–235. doi: 10.1104/pp.46.2.233. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Boyer J. S. Leaf water potentials measured with a pressure chamber. Plant Physiol. 1967 Jan;42(1):133–137. doi: 10.1104/pp.42.1.133. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Graziani Y., Livne A. Dehydration, water fluxes, and permeability of tobacco leaf tissue. Plant Physiol. 1971 Nov;48(5):575–579. doi: 10.1104/pp.48.5.575. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Jordan W. R., Ritchie J. T. Influence of soil water stress on evaporation, root absorption, and internal water status of cotton. Plant Physiol. 1971 Dec;48(6):783–788. doi: 10.1104/pp.48.6.783. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Kanemasu E. T., Tanner C. B. Stomatal diffusion resistance of snap beans. I. Influence of leaf-water potential. Plant Physiol. 1969 Nov;44(11):1547–1552. doi: 10.1104/pp.44.11.1547. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Milborrow B. V., Noddle R. C. Conversion of 5-(1,2-epoxy-2,6,6-trimethylcyclohexyl)-3-methylpenta-cis-2-trans-4-dienoic acid into abscisic acid in plants. Biochem J. 1970 Oct;119(4):727–734. doi: 10.1042/bj1190727. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Mizrahi Y., Blumenfeld A., Bittner S., Richmond A. E. Abscisic Acid and cytokinin contents of leaves in relation to salinity and relative humidity. Plant Physiol. 1971 Dec;48(6):752–755. doi: 10.1104/pp.48.6.752. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Seeley S. D., Powell L. E. Electron capture-gas chromatography for sensitive assay of abscisic acid. Anal Biochem. 1970 Jun;35(2):530–533. doi: 10.1016/0003-2697(70)90218-6. [DOI] [PubMed] [Google Scholar]
  9. Zeevaart J. A. (+)-abscisic Acid content of spinach in relation to photoperiod and water stress. Plant Physiol. 1971 Jul;48(1):86–90. doi: 10.1104/pp.48.1.86. [DOI] [PMC free article] [PubMed] [Google Scholar]

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