Photosynthetic Oxygen Evolution in the Filamentous Cyanobacterium Oscillatoria Chalybea: Interrelationship Between Water Splitting, Hydrogen Peroxide Decomposition and Nitrate Metabolism

1991 ◽  
pp. 419-424
Author(s):  
Klaus P. Bader ◽  
Georg H. Schmid
Keyword(s):  
Hydrogen Peroxide ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Photosynthetic Oxygen Evolution ◽  
Filamentous Cyanobacterium ◽  
Hydrogen Peroxide Decomposition ◽  
Peroxide Decomposition ◽  
Oscillatoria Chalybea ◽  
Nitrate Metabolism ◽  
Photosynthetic Oxygen

An Amperometric Study on the Time Constants of Oxygen Release in Thylakoids of Nicotiana tabacum and Oscillatoria chalybea

1990 ◽  
Vol 45 (11-12) ◽  
pp. 1117-1126 ◽  
Author(s):  
R. Schulder ◽  
K. P. Bader ◽  
G. H. Schmid
Keyword(s):  
Electrode System ◽  
Diffusion Time ◽  
Release Time ◽  
Photosynthetic Oxygen Evolution ◽  
Filamentous Cyanobacterium ◽  
Oxygen Release ◽  
Full Agreement ◽  
Oscillatoria Chalybea ◽  
Photosynthetic Oxygen ◽  
Time Required

Abstract Measurement of photosynthetic oxygen evolution in tobacco chloroplasts and thylakoids of the filamentous cyanobacterium Oscillatoria chalybea by means of the “Three-Electrode-System”, described by Schmid and Thibault in 1979, yields half-rise times for the directly measured amperometric O2-signal of approximately 2 msec for tobacco chloroplasts and slightly more than 2 msec for thylakoids of Oscillatoria chalybea. An estimate of the possible contribution of the diffusion time required for oxygen to leave the thylakoid membrane (7.5 nm thickness) or the chloroplast (diameter 4 -5 μm) might bring the measured O2-release time below 1 msec in full agreement with measurements by Joliot et al. in 1966.

Photosynthetic Oxygen Evolution and the Water Splitting Enzyme

1981 ◽  
Vol 21 (4) ◽  
pp. 243-249 ◽  
Author(s):  
J. Barber ◽  
H. Y. Nakatani ◽  
R. Mansfield
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Photosynthetic Oxygen Evolution ◽  
Photosynthetic Oxygen
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