Optimization of carbon dioxide and nitrogen fixation by the blue-green alga Anabaena in freshwater blooms

Oecologia ◽  
1979 ◽  
Vol 38 (3) ◽  
pp. 275-290 ◽  
Author(s):  
Hans W. Paerl
Keyword(s):  
Carbon Dioxide ◽  
Nitrogen Fixation ◽  
Green Alga ◽  
Blue Green Alga

Photosynthesis and nitrogenase activity in the blue-green alga Gloeocapsa

1974 ◽  
Vol 20 (12) ◽  
pp. 1633-1637 ◽  
Author(s):  
J. R. Gallon ◽  
T. A. LaRue ◽  
W. G. W. Kurz
Keyword(s):  
Nitrogen Fixation ◽  
Oxygen Evolution ◽  
Green Alga ◽  
Photosynthetic Pigments ◽  
Nitrogenase Activity ◽  
Photosynthetic Oxygen Evolution ◽  
Blue Green Alga ◽  
Temporal Separation ◽  
Young Culture ◽  
Photosynthetic Oxygen

In a young culture, photosynthetic-oxygen evolution by Gloeocapsa is at a low level while nitrogenase activity is at its greatest. When the culture ages, there is a rapid increase in photosynthetic pigments and oxygen evolution, and nitrogenase activity decreases. The temporal separation of nitrogen fixation and photosynthesis may serve to protect nitrogenase from oxygen denaturation.

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