Physiological and biochemical studies on nitrogen fixation by blue-green algae
โ Scribed by Taha, Ezz Eldin M. ;Refai, Abdel Monem H.
- Publisher
- Springer-Verlag
- Year
- 1963
- Weight
- 557 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0003-9276
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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,
Frequent growth of unicellular blue-green alga Aphanothece sp. was observed in medium free of combined nitrogen. Its generation time was 12 h and more than 2 mg of nitrogen was fixed in 25 days. Its growth and nitrogen fixation were comparable to other heterocystous algae. Nitrogen fixation in blue