Abstract
The analysis of photochemical activities of Photosystem I and Photosystem II in spheroplasts from normal and photobleached Anabaena cylindrica showed an increase in Photosystem II activity relative to Photosystem I in photobleached cells. We suggest that the reasons for this modification in photochemical activity are, (i) a rearrangement of pigments between the two photosystems, and (ii) improved functional condition of the photosynthetic units in Photosystem II.
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Abbreviations
- PSI:
-
Photosystem I
- PSII:
-
Photosystem II
- DCMU:
-
3-(3′,4′-dichlorophenyl)-1,1-dimethyl-urea
- MV:
-
methylviologen
- DCPIP:
-
1,6-dichlorphenol indophenol
- DBMIB:
-
2,5-dibromo-3-methyl-6-isopropyl-p-benzoquinone
- FeCN:
-
Ferricyanide
- APC:
-
anophycocyanin
- PC:
-
phycocyanin
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Laczkó, I. Comparison of Photosystem-I and Photosystem-II activities of spheroplasts from normal and photobleached Anabaena cylindrica . Arch. Microbiol. 141, 112–115 (1985). https://doi.org/10.1007/BF00423269
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DOI: https://doi.org/10.1007/BF00423269