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INFLUENCE OF THE POOL SIZE OF THE XANTHOPHYLL CYCLE ON THE EFFECTS OF LIGHT STRESS IN A DIATOM: COMPETITION BETWEEN PHOTOPROTECI'ION AND PHOTOINHIBITION
Abstract
Abstract In a study of the relationship between nonphotochemical quenching of fluorescence and the xanthophyll cycle, we show that the diatom Phaeodactylum tricornutum exhibits several interesting characteristics. This xanthophyll cycle consists of only one reversible epoxidating/deepoxidating step (diadinoxanthiddiatoxanthin). Diadinoxan‐thin, which increases from 8 to 17 molecules/100 chlorophyll a (Chl a) during the ageing of the culture, was present as two separate pools, with a portion (of about 5 molecules/100 Chl a) which was never deepoxidated. Under a defined irradiance, the time necessary to abolish net photosynthesis increases with the pool size of diadinoxanthin available for deepoxidation. A close correlation is found between nonphotochemical quenching and the relative ratio of diatoxanthin until the photosytem II center is inactivated. The photoprotective effect of diadinoxanthin deepoxidation is limited to the phase during which quenching of the minimum fluorescence (F 0) develops.
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Citations
Cited by
Non-Photochemical Quenching. A Response to Excess Light Energy
Müller, P., Li, X.-P., & Niyogi, K. K. (2001) · Plant Physiology · doi:10.1104/pp.125.4.1558 · Cited by 2,840
MacIntyre, H. L., Kana, T. M., Anning, T., & Geider, R. J. (2002) · Journal of Phycology · doi:10.1046/j.1529-8817.2002.00094.x · Cited by 830
Molecular design of the photosystem II light-harvesting antenna: photosynthesis and photoprotection
Horton, P. (2004) · Journal of Experimental Botany · doi:10.1093/jxb/eri023 · Cited by 458
Regulation and possible function of the violaxanthin cycle
Pfündel, E., & Bilger, W. (1994) · Photosynthesis Research · doi:10.1007/bf02187121 · Cited by 307
Algae displaying the diadinoxanthin cycle also possess the violaxanthin cycle
Lohr, M., & Wilhelm, C. (1999) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.96.15.8784 · Cited by 296
Metadata
- Authors
- Arsalane, W., Rousseau, B., & Duval, J.
- Venue
- Photochemistry and Photobiology
- Publisher
- Wiley
- Published
- 1994-09
- Volume
- 60
- Issue
- 3
- Pages
- 237-243
- ISSN
- 0031-8655 (ISSN-L)
- 1751-1097
- OpenAlex
- W2163692984
- Cited by
- 171
- References
- 0
- FWCI
- 2.21
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: INFLUENCE OF THE POOL SIZE OF THE XANTHOPHYLL CYCLE ON THE EFFECTS OF LIGHT STRESS IN A DIATOM: COMPETITION BETWEEN PHOTOPROTECI'ION AND PHOTOINHIBITION. https://app.cochat.ai/papers/10.1111/j.1751-1097.1994.tb05097.x
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- Arsalane, W., Rousseau, B., & Duval, J. (1994). INFLUENCE OF THE POOL SIZE OF THE XANTHOPHYLL CYCLE ON THE EFFECTS OF LIGHT STRESS IN A DIATOM: COMPETITION BETWEEN PHOTOPROTECI'ION AND PHOTOINHIBITION. Photochemistry and Photobiology. https://doi.org/10.1111/j.1751-1097.1994.tb05097.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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