Summary
Nitrogen fixing cultures of the cyanobacteriumNostoc muscorum lacked hydrogen evolution but cultures infected with cyanophage N-1 showed significant hydrogen evolution and inactive nitrogenase, suggesting that nitrogenase activity is not responsible for the observed oxygen-resistant photoproduction of hydrogen. Significant oxygen-resistant hydrogen production by nitrate or ammonium assimilating cultures deficient in both nitrogenase and uptake hydrogenase activity supports this conclusion. These findings suggest a role of uptake hydrogenase in blocking the production of hydrogen during aerobic photosynthetic conditions.
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Singh, S., Kashyap, A.K. Photoevolution of hydrogen during oxygenic photosynthesis of cyanobacteriumNostoc muscorum . Biotechnol Lett 10, 921–925 (1988). https://doi.org/10.1007/BF01027007
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DOI: https://doi.org/10.1007/BF01027007