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Inhibitory effect of molecular hydrogen on C2H2-reducing activity in Anabaena 7120 preilluminated in red or blue light

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Abstract

Molecular hydrogen inhibits nitrogenase activity in Anabaena pre-illuminated with red or blue light. The inhibitory effect of molecular hydrogen decreased in the presence of oxygen and several electron acceptors. When NH4Cl and urea were added simultaneously with molecular hydrogen, marked synergistic inhibitory effects took place. The inhibitory effect of molecular hydrogen disappeared or was weakened after the suppression of hydrogenase activity. The addition of O2 and electron acceptors to systems showed no enhancing effect on the C2H2-reducing activity.

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Authors and Affiliations

  1. Shanghai Institute of Plant Physiology, Academia Sinica, Shanghai, China

    Chen Yin & Fan Da-wei

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  1. Chen Yin
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  2. Fan Da-wei
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Yin, C., Da-wei, F. Inhibitory effect of molecular hydrogen on C2H2-reducing activity in Anabaena 7120 preilluminated in red or blue light. Hydrobiologia 123, 219–221 (1985). https://doi.org/10.1007/BF00034382

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  • DOI: https://doi.org/10.1007/BF00034382

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