The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Action of UV‐B radiation on photosynthetic primary reactions in spinach chloroplasts
Abstract
Spinach (Spinacia oleracea L. cv. Matador) chloroplasts were irradiated with several levels of UV‐B radiation. Measurements which reflect characteristic steps of photosynthetic electron transport were made to localize the site of impairment of photosynthesis by UV‐B radiation. Variable fluorescence, the μs‐kinetics of the 320 nm absorption changes and also oxygen evolution were substantially reduced in chloroplasts irradiated with UV‐B. It was not possible to restore the amplitude of the 320 nm absorption changes nor the signal of the transmembrane electric field measured at 520 nm by adding the photo‐system II donor couple hydroquinone/ascorbate to UV‐B treated chloroplast samples. This indicates that impairment of photosystem II activity is not caused by selective inhibition of the water‐splitting enzyme system Y, but rather is due to blockage of photosystem II reaction centers. Photosystem 1 is inferred to be highly resistant to UV‐B radiation. These results suggest that the reaction centers of photosystem II are transformed into dissipative sinks for excitation energy by action of UV‐B radiation.
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Citations
Cites
Stratospheric sink for chlorofluoromethanes: chlorine atom-catalysed destruction of ozone
Molina, M. J., & Rowland, F. S. (1974) · Nature · doi:10.1038/249810a0 · Cited by 4,332
Cited by
Effects of UV-B radiation on photosynthesis and growth of terrestrial plants
Teramura, A. H., & Sullivan, J. H. (1994) · Photosynthesis Research · doi:10.1007/bf00014599 · Cited by 490
THE ROLE AND EVOLUTION OF SUPEROXIDE DISMUTASES IN ALGAE1
Wolfe‐Simon, F., Grzebyk, D., Schofield, O., & Falkowski, P. G. (2005) · Journal of Phycology · doi:10.1111/j.1529-8817.2005.00086.x · Cited by 239
Karsten, U., Sawall, T., Hanelt, D., Bischof, K., Figueroa, F. L., Flores-Moya, A., & Wiencke, C. (1998) · Botanica Marina · doi:10.1515/botm.1998.41.1-6.443 · Cited by 219
Metadata
- Authors
- Iwanzik, W., Tevini, M., Dohnt, G., Voss, M., Weiss, W., Gräber, P., & Renger, G.
- Venue
- Physiologia Plantarum
- Publisher
- Wiley
- Published
- 1983-07
- Volume
- 58
- Issue
- 3
- Pages
- 401-407
- ISSN
- 0031-9317 (ISSN-L)
- 1399-3054
- OpenAlex
- W2054504543
- Cited by
- 178
- References
- 1
- FWCI
- 2.30
- Type
- journal article
- Language
- en
- Open access
- closed
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- Iwanzik, W., Tevini, M., Dohnt, G., Voss, M., Weiss, W., Gräber, P., & Renger, G. (1983). Action of UV‐B radiation on photosynthetic primary reactions in spinach chloroplasts. Physiologia Plantarum. https://doi.org/10.1111/j.1399-3054.1983.tb04201.x
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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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