| | 1 | Author
| ShigetohM. Iyachi11, JoachimB. Ürger, K. Iriakos, K. Otzabasisb, JensT. Hielm Annc, H. O. Rst Senger | Requires cookie* | | | Title
| Photosynthetic Characteristics of Three Strains of Cyanobacteria Grown under Low-or High-C02 Conditions  | | | | Abstract
| Quantum requirements of photosynthetic oxygen evolution at 679 nm, fluorescence em is sion spectra at liquid nitrogen temperature (77 K) and fluorescence induction kinetics in the presence of DCM U, were measured in the cyanobacteria Anabaena variabilis M3, Anabaena variabilis ATCC 29413 and A nacystis nidulans R2, each grown under low-or high-C02 condi tions. L o w -C 0 2 grown cells o f the cyanobacteria showed a higher quantum requirement of photosynthetic oxygen evolution and a higher ratio o f F7U)_740 to F680_700 fluorescence and a lower variable fluorescence in the presence of D CM U than high-C02 grown cells. These findings indicate a change in excitation energy distribution in favour of photosystem I. The result might be an enhancement in ATP formation caused by cyclic electron flow which in turn provokes dissolved inorganic carbon (D IC) accumulation in these low-C02 grown cells. | | | |
Reference
| Z. Naturforsch. 51c, 40—4 (1996); received August 4/October 6 1995 | | | |
Published
| 1996 | | | |
Keywords
| Quantum Requirement, Fluorescence, Dissolved Inorganic Carbon, Anabaena variabilis, Anacystis nidulans | | | |
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| default:Reihe_C/51/ZNC-1996-51c-0040.pdf | | | | Identifier
| ZNC-1996-51c-0040 | | | | Volume
| 51 | |
| 2 | Author
| Günter Döhler, Jean-Claude Leclerc, M. | Requires cookie* | | | Title
| Photosynthetic Adaptation in Synechococcus Cells | | | | Abstract
| The cyanobacterium Synechococcus (Anacystis nidulans, strain L 1401-1) grown under different light conditions showed variations in pigmentation. Ratios of photosynthetic pigments and the effect on quantum requirement and oxygen evolution were studied. An increase in the ratio of chlorophyll a forms with absorption maxima in the far red regime to total chlorophyll a forms was observed in cells grown in strong white light. The quantum efficiency of orange light (637 nm) -absorbed by phycocyanin — was higher after growth of Synechococcus in white than | | | |
Reference
| Z. Naturforsch. 37c, 1075—1080 (1982); received August 12 1982 | | | |
Published
| 1982 | | | |
Keywords
| Pigmentation, Quantum Requirement, Absorption Spectra, Oxygen Evolution, P 700, Synecho coccus | | | |
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| default:Reihe_C/37/ZNC-1982-37c-1075.pdf | | | | Identifier
| ZNC-1982-37c-1075 | | | | Volume
| 37 | |
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