Skip to main content
PMC home page
Plant Physiology logoLink to Plant Physiology
. 1987 Apr;83(4):820–824. doi: 10.1104/pp.83.4.820

A Possible Role for Abscisic Acid in Regulation of Photosynthetic and Photorespiratory Carbon Metabolism in Barley Leaves 1

Losanka P Popova 1, Tsonko D Tsonev 1, Stanka G Vaklinova 1
PMCID: PMC1056457  PMID: 16665346

Abstract

The influence of abscisic acid (ABA) on carbon metabolism, rate of photorespiration, and the activity of the photorespiratory enzymes ribulose bisphosphate oxygenase and glycolate oxidase in 7-day-old barley seedlings (Hordeum vulgare L. var. Alfa) was investigated. Plants treated with ABA had enhanced incorporation of labeled carbon from 14CO2 into glycolic acid, glycine, and serine, while 14C incorporation into 3-phosphoglyceric acid and sugarphosphate esters was depressed. Parallel with this effect, treated plants showed a rise in activity of RuBP oxygenase and glycolic acid oxidase. The rate of photorespiration was increased twofold by ABA treatment at IO−6 molar while the CO2-compensation point increased 46% and stomatal resistance increased more than twofold over control plants.

Full text

PDF

Selected References

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

  1. Dubbe D. R., Farquhar G. D., Raschke K. Effect of abscisic Acid on the gain of the feedback loop involving carbon dioxide and stomata. Plant Physiol. 1978 Sep;62(3):413–417. doi: 10.1104/pp.62.3.413. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. KOLESNIKOV P. A. [Colorimetric methods for the determination of the activity of glycolic acid oxidase and glyoxalic acid reductase]. Biokhimiia. 1962 Mar-Apr;27:193–196. [PubMed] [Google Scholar]
  3. LOWRY O. H., ROSEBROUGH N. J., FARR A. L., RANDALL R. J. Protein measurement with the Folin phenol reagent. J Biol Chem. 1951 Nov;193(1):265–275. [PubMed] [Google Scholar]
  4. Mawson B. T., Colman B., Cummins W. R. Abscisic Acid and photosynthesis in isolated leaf mesophyll cell. Plant Physiol. 1981 Feb;67(2):233–236. doi: 10.1104/pp.67.2.233. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Rathnam C. K., Chollet R. Photosynthetic and Photorespiratory Carbon Metabolism in Mesophyll Protoplasts and Chloroplasts Isolated from Isogenic Diploid and Tetraploid Cultivars of Ryegrass (Lolium perenne L.). Plant Physiol. 1980 Mar;65(3):489–494. doi: 10.1104/pp.65.3.489. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Van Overbeek J., Loeffler J. E., Mason M. I. Dormin (Abscisin II), inhibitor of plant DNA synthesis? Science. 1967 Jun 16;156(3781):1497–1499. doi: 10.1126/science.156.3781.1497. [DOI] [PubMed] [Google Scholar]

Articles from Plant Physiology are provided here courtesy of Oxford University Press

RESOURCES