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Photoinhibition of Chloroplast Reactions. I. Kinetics and Action Spectra
Open accessAbstract
A study was made of photoinhibition of spinach chloroplast reactions. The kinetics and spectral characteristics of the photoinhibition over a range between 230 and 700 mmu have been examined. The decline of activity due to preillumination was independent of wavelength, and dependent upon the number of quanta applied, not upon the rate of application. The effectiveness spectra of photoinhibition indicate that active ultraviolet light is absorbed by a pigment which is not a normal light absorber for photosynthesis and acts with a high quantum efficiency (> 0.1) for photoinhibition.Active visible light is absorbed by the pigments which sensitize photosynthesis (chlorophyll, carotenoids). A very low quantum efficiency (about 10(-4)) was observed for the photoinhibition with visible light.The action spectrum of the photoinhibition of dye reduction by chloroplasts and lyophylized Anacystis cells indicated that the damage caused by visible light is due to quanta absorbed by photosystem II. However, since system I might not be involved in dye reduction, the spectra may reflect only damage to photosystem II.
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Cited by
Changes in biologically active ultraviolet radiation reaching the Earth's surface
Madronich, S., McKenzie, R. L., Björn, L. O., & Caldwell, M. M. (1998) · Journal of Photochemistry and Photobiology B: Biology · doi:10.1016/s1011-1344(98)00182-1 · Cited by 1,086
ADAPTATION OF UNICELLULAR ALGAE TO IRRADIANCE: AN ANALYSIS OF STRATEGIES
RICHARDSON, K., BEARDALL, J., & RAVEN, J. A. (1983) · New Phytologist · doi:10.1111/j.1469-8137.1983.tb03422.x · Cited by 699
Tyystjärvi, E., & Aro, E. M. (1996) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.93.5.2213 · Cited by 469
Molecular mechanisms of photodamage in the Photosystem II complex
Vass, I. (2012) · Biochimica et Biophysica Acta (BBA) - Bioenergetics · doi:10.1016/j.bbabio.2011.04.014 · Cited by 398
The Ultraviolet Environment of Mars: Biological Implications Past, Present, and Future
Cockell, C. (2000) · Icarus · doi:10.1006/icar.2000.6393 · Cited by 317
Metadata
- Authors
- Jones, L. W., & Kok, B.
- Venue
- Plant Physiology
- Publisher
- Oxford University Press (OUP)
- Published
- 1966-06-01
- Volume
- 41
- Issue
- 6
- Pages
- 1037-1043
- ISSN
- 0032-0889 (ISSN-L)
- 1532-2548
- OpenAlex
- W2013272014
- Cited by
- 421
- References
- 0
- FWCI
- 1.18
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Jones, L. W., & Kok, B. (1966). Photoinhibition of Chloroplast Reactions. I. Kinetics and Action Spectra. Plant Physiology. https://doi.org/10.1104/pp.41.6.1037
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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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