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. 1991 Jul;96(3):831–836. doi: 10.1104/pp.96.3.831

Circadian Rhythms in Photosynthesis 1

Oscillations in Carbon Assimilation and Stomatal Conductance under Constant Conditions

Timothy L Hennessey 1,2, Christopher B Field 1,2
PMCID: PMC1080851  PMID: 16668261

Abstract

Net carbon assimilation and stomatal conductance to water vapor oscillated repeatedly in red kidney bean, Phaseolus vulgaris L., plants transferred from a natural photoperiod to constant light. In a gas exchange system with automatic regulation of selected environmental and physiological variables, assimilation and conductance oscillated with a free-running period of approximately 24.5 hours. The rhythms in carbon assimilation and stomatal conductance were closely coupled and persisted for more than a week under constant conditions. A rhythm in assimilation occurred when either ambient or intercellular CO2 partial pressure was held constant, demonstrating that the rhythm in assimilation was not entirely the result of stomatal effects on CO2 diffusion. Rhythms in assimilation and conductance were not expressed in plants grown under constant light at a constant temperature, demonstrating that the rhythms did not occur spontaneously but were induced by an external stimulus. In plants grown under constant light with a temperature cycle, a rhythm was entrained in stomatal conductance but not in carbon assimilation, indicating that the oscillators driving the rhythms differed in their sensitivity to environmental stimuli.

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Selected References

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

  1. Britz S. J., Briggs W. R. Circadian rhythms of chloroplast orientation and photosynthetic capacity in ulva. Plant Physiol. 1976 Jul;58(1):22–27. doi: 10.1104/pp.58.1.22. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Daley P. F., Raschke K., Ball J. T., Berry J. A. Topography of photosynthetic activity of leaves obtained from video images of chlorophyll fluorescence. Plant Physiol. 1989 Aug;90(4):1233–1238. doi: 10.1104/pp.90.4.1233. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Gorton H. L., Williams W. E., Binns M. E., Gemmell C. N., Leheny E. A., Shepherd A. C. Circadian Stomatal Rhythms in Epidermal Peels from Vicia faba. Plant Physiol. 1989 Aug;90(4):1329–1334. doi: 10.1104/pp.90.4.1329. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. HASTINGS J. W., ASTRACHAN L., SWEENEY B. M. A persistent daily rhythm in photosynthesis. J Gen Physiol. 1961 Sep;45:69–76. doi: 10.1085/jgp.45.1.69. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Holmes M. G., Klein W. H. Photocontrol of Dark Circadian Rhythms in Stomata of Phaseolus vulgaris L. Plant Physiol. 1986 Sep;82(1):28–33. doi: 10.1104/pp.82.1.28. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Kerr P. S., Rufty T. W., Huber S. C. Endogenous Rhythms in Photosynthesis, Sucrose Phosphate Synthase Activity, and Stomatal Resistance in Leaves of Soybean (Glycine max [L.] Merr.). Plant Physiol. 1985 Feb;77(2):275–280. doi: 10.1104/pp.77.2.275. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Lonergan T. A. A circadian rhythm in the rate of light-induced electron flow in three leguminous species. Plant Physiol. 1981 Nov;68(5):1041–1046. doi: 10.1104/pp.68.5.1041. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Pallas J. E., Samish Y. B., Willmer C. M. Endogenous rhythmic activity of photosynthesis, transpiration, dark respiration, and carbon dioxide compensation point of peanut leaves. Plant Physiol. 1974 Jun;53(6):907–911. doi: 10.1104/pp.53.6.907. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Samuelsson G., Sweeney B. M., Matlick H. A., Prézelin B. B. Changes in Photosystem II Account for the Circadian Rhythm in Photosynthesis in Gonyaulax polyedra. Plant Physiol. 1983 Oct;73(2):329–331. doi: 10.1104/pp.73.2.329. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Sharkey T. D., Seemann J. R. Mild water stress effects on carbon-reduction-cycle intermediates, ribulose bisphosphate carboxylase activity, and spatial homogeneity of photosynthesis in intact leaves. Plant Physiol. 1989 Apr;89(4):1060–1065. doi: 10.1104/pp.89.4.1060. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Walther W. G., Edmunds L. N. Studies on the Control of the Rhythm of Photosynthetic Capacity in Synchronized Cultures of Euglena gracilis (Z). Plant Physiol. 1973 Feb;51(2):250–258. doi: 10.1104/pp.51.2.250. [DOI] [PMC free article] [PubMed] [Google Scholar]

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