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. 1987 Aug;84(4):1373–1377. doi: 10.1104/pp.84.4.1373

Photosystem I-Mediated Regulation of Water Splitting in the Red Alga, Porphyra sanjuanensis1

Peter R Sibbald 1,2, William Vidaver 1,2
PMCID: PMC1056781  PMID: 16665613

Abstract

The marine red alga, Porphyra sanjuanensis is found mainly in the high intertidal zone and at low tide subject to frequent and extreme water stress, often accompanied by high temperatures and light intensities. Such exposures can lead to severe desiccation which is accompanied by the progressive loss of photosynthetic activity. Even following the loss of more than 90% of the thallus water content the alga recovers rapidly when returned to seawater. This stress-induced, reversible inactivation of photosynthesis is believed to be a protective adaptation which prevents photodamage to the exposed alga. Effects of light, inhibitors of water splitting, and electron donors to PSI on variable fluorescence and water splitting suggest that activity of the oxygen evolving complex is regulated by the PSI-driven reduction of a component of intersystem electron transport.

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Selected References

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

  1. Alberte R. S., Thornber J. P. Water stress effects on the content and organization of chlorophyll in mesophyll and bundle sheath chloroplasts of maize. Plant Physiol. 1977 Mar;59(3):351–353. doi: 10.1104/pp.59.3.351. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Callahan F. E., Becker D. W., Cheniae G. M. Studies on the Photoactivation of the Water-Oxidizing Enzyme: II. Characterization of Weak Light Photoinhibition of PSII and Its Light-Induced Recovery. Plant Physiol. 1986 Sep;82(1):261–269. doi: 10.1104/pp.82.1.261. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Ehleringer J. R., Cook C. S. Photosynthesis in Encelia farinosa Gray in Response to Decreasing Leaf Water Potential. Plant Physiol. 1984 Jul;75(3):688–693. doi: 10.1104/pp.75.3.688. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Karukstis K. K., Sauer K. Energy transfer and distribution in the red alga Porphyra perforata studied using picosecond fluorescence spectroscopy. Biochim Biophys Acta. 1984 Jul 27;766(1):141–147. doi: 10.1016/0005-2728(84)90225-1. [DOI] [PubMed] [Google Scholar]
  5. Katoh S., San Pietro A. Ascorbate-supported NADP photoreduction by heated Euglena chloroplasts. Arch Biochem Biophys. 1967 Oct;122(1):144–152. doi: 10.1016/0003-9861(67)90133-6. [DOI] [PubMed] [Google Scholar]
  6. Ke B. The primary electron acceptor of photosystem. I. Biochim Biophys Acta. 1973 Feb 12;301(1):1–33. doi: 10.1016/0304-4173(73)90010-4. [DOI] [PubMed] [Google Scholar]
  7. Kyle D. J., Ohad I., Arntzen C. J. Membrane protein damage and repair: Selective loss of a quinone-protein function in chloroplast membranes. Proc Natl Acad Sci U S A. 1984 Jul;81(13):4070–4074. doi: 10.1073/pnas.81.13.4070. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Porter G., Tredwell C. J., Searle G. F., Barber J. Picosecond time-resolved energy transfer in Porphyridium cruentum. Part I. In the intact alga. Biochim Biophys Acta. 1978 Feb 9;501(2):232–245. doi: 10.1016/0005-2728(78)90029-4. [DOI] [PubMed] [Google Scholar]
  9. SIRONVAL C., KANDLER O. Photoxidation processes in normal green Chlorella cells. I. The bleaching process. Biochim Biophys Acta. 1958 Aug;29(2):359–368. doi: 10.1016/0006-3002(58)90195-1. [DOI] [PubMed] [Google Scholar]
  10. Satoh K., Fork D. C. A New Mechanism for Adaptation to Changes in Light Intensity and Quality in the Red Alga Porphyra perforata: III. Fluorescence Transients in the Presence of 3-(3,4-Dichlorophenyl)-1,1-dimethylurea. Plant Physiol. 1983 Mar;71(3):673–676. doi: 10.1104/pp.71.3.673. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Smillie R. M., Nott R. Assay of chilling injury in wild and domestic tomatoes based on photosystem activity of the chilled leaves. Plant Physiol. 1979 May;63(5):796–801. doi: 10.1104/pp.63.5.796. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Trebst A., Pistorius E. ATP formation coupled to photosynthetic NADP+ reduction with artificial electron donors. Biochim Biophys Acta. 1967 May 9;131(3):580–582. doi: 10.1016/0005-2728(67)90017-5. [DOI] [PubMed] [Google Scholar]
  13. Yamashita T., Butler W. L. Inhibition of the Hill Reaction by Tris and Restoration by Electron Donation to Photosystem II. Plant Physiol. 1969 Mar;44(3):435–438. doi: 10.1104/pp.44.3.435. [DOI] [PMC free article] [PubMed] [Google Scholar]

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