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Relationship between Photosynthesis and Respiration: The Effect of Carbohydrate Status on the Rate of CO2 Production by Respiration in Darkened and Illuminated Wheat Leaves
Open accessAbstract
The rate of dark CO(2) efflux from mature wheat (Triticum aestivum cv Gabo) leaves at the end of the night is less than that found after a period of photosynthesis. After photosynthesis, the dark CO(2) efflux shows complex dependence on time and temperature. For about 30 minutes after darkening, CO(2) efflux includes a large component which can be abolished by transferring illuminated leaves to 3% O(2) and 330 microbar CO(2) before darkening. After 30 minutes of darkness, a relatively steady rate of CO(2) efflux was obtained. The temperature dependence of steady-state dark CO(2) efflux at the end of the night differs from that after a period of photosynthesis. The higher rate of dark CO(2) efflux following photosynthesis is correlated with accumulated net CO(2) assimilation and with an increase in several carbohydrate fractions in the leaf. It is also correlated with an increase in the CO(2) compensation point in 21% O(2), and an increase in the light compensation point. The interactions between CO(2) efflux from carbohydrate oxidation and photorespiration are discussed. It is concluded that the rate of CO(2) efflux by respiration is comparable in darkened and illuminated wheat leaves.
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Citations
Cited by
Elevated CO2 effects on plant carbon, nitrogen, and water relations: six important lessons from FACE
Leakey, A. D. B., Ainsworth, E. A., Bernacchi, C. J., Rogers, A., Long, S. P., & Ort, D. R. (2009) · Journal of Experimental Botany · doi:10.1093/jxb/erp096 · Cited by 1,678
Brooks, A., & Farquhar, G. D. (1985) · Planta · doi:10.1007/bf00392238 · Cited by 1,018
The McCree-de Wit-Penning de Vries-Thornley respiration paradigms: 30 years later.
Amthor, J. (2000) · Annals of Botany · doi:10.1006/anbo.2000.1175 · Cited by 822
Response of root respiration to changes in temperature and its relevance to global warming
ATKIN, O. K., EDWARDS, E. J., & LOVEYS, B. R. (2000) · New Phytologist · doi:10.1046/j.1469-8137.2000.00683.x · Cited by 438
Williams, K., Field, C. B., & Mooney, H. A. (1989) · The American Naturalist · doi:10.1086/284910 · Cited by 276
Metadata
- Authors
- Azcón-Bieto, J., & Osmond, C. B.
- Venue
- Plant Physiology
- Publisher
- Oxford University Press (OUP)
- Published
- 1983-03-01
- Volume
- 71
- Issue
- 3
- Pages
- 574-581
- ISSN
- 0032-0889 (ISSN-L)
- 1532-2548
- OpenAlex
- W2092585274
- Cited by
- 329
- References
- 0
- FWCI
- 4.91
- Type
- journal article
- Language
- en
- Open access
- green
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- CoChat. (2026). Citation check: Relationship between Photosynthesis and Respiration: The Effect of Carbohydrate Status on the Rate of CO2 Production by Respiration in Darkened and Illuminated Wheat Leaves. https://app.cochat.ai/papers/10.1104/pp.71.3.574
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- Azcón-Bieto, J., & Osmond, C. B. (1983). Relationship between Photosynthesis and Respiration: The Effect of Carbohydrate Status on the Rate of CO2 Production by Respiration in Darkened and Illuminated Wheat Leaves. Plant Physiology. https://doi.org/10.1104/pp.71.3.574
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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