Photosynthetica 1998, 35(4):551-559 | DOI: 10.1023/A:1006931024202

Action of Mercury on the Photosynthetic Apparatus of Spinach Chloroplasts

F. Šeršeň1, K. Král'ová1, A. Bumbálová2
1 Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia
2 Faculty of Pharmacy, Comenius University, Bratislava, Slovakia

In chloroplasts of Spinacea oleracea L., Hg2+ ions interact with some sites in the photosynthetic electron transport chain: (l) with the intermediates Z+/D+ situated in the D1 and D2 proteins and with the manganese cluster in the oxygen evolving complex which are located on the donor side of photosystem (PS) 2, (2) with the chlorophyll a dimer in the core of PS1 (P700). P700 is oxidized in the dark by HgCl2. The Hg2+ ions form organometallic complexes with amino acids contained in chloroplast proteins.

Additional key words: EPR spectroscopy; fluorescence spectroscopy; HgCl2; photosynthesis; radionuclide X-ray fluorescence analyses

Prepublished online: December 1, 1998; Published: January 1, 1998  Show citation

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Šeršeň, F., Král'ová, K., & Bumbálová, A. (1998). Action of Mercury on the Photosynthetic Apparatus of Spinach Chloroplasts. Photosynthetica, 35(4), 551-559. doi: 10.1023/A:1006931024202
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