Blending Anabaena cylindrica cultures results in a loss of nitrogenase activity which is correlated with the breakage of the filaments at the junctions between heterocysts and vegetative cells. Oxygen inhibition of nitrogen fixation was significant only above atmospheric concentrations. Nitrogen-fix
Photostimulation of nitrogen fixation in Anabaena cylindrica
β Scribed by Peter Fay
- Book ID
- 115715489
- Publisher
- Elsevier Science
- Year
- 1970
- Tongue
- English
- Weight
- 209 KB
- Volume
- 216
- Category
- Article
- ISSN
- 0005-2728
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The effects of oxygen, light and photosynthesis inhibitors on nitrogenase activities in Anabaena cylindrica batch cultures were followed as a function of time after inoculation. During the early rapid growth period the nitrogenase activities of cultures grown under air/CO 2 or N2/C02 were relatively
In long-term experiments, nitrogen fixation in photosynthetic organisms is usually dependent upon the presence of light (FoGG and THAN TUN, 1960; F\_au and FOGG, 1962) although certain photosynthetic nitrogen-fixers can grow and fix nitrogen in the dark using organic media (Nostoc muscorum, ALLISON,