Autotrophic growth and hydrogenase activity of<i>Pseudomonas saccharophila</i>strains

Pseudomonas saccharophila, grown microaerobically in batch culture, showed much higher uptake hydrogenase activity in N2-fixing than in NHi-grown cultures. Hydrogenase synthesis was induced by H2 under a low partial pressure of O2 and under air, in autotrophic as well as in heterotrophic conditions, provided that the sucrose concentration was relatively low. Sucrose at 15 mM repressed hydrogenase formation but did not inhibit preformed activity. Other utilizable carbon substrates repressed, while non-utilizable substrates did not repress, hydrogenase synthesis. The activity, unlike nitrogenase, was not sensitive to O2 but hydrogenase synthesis was partially repressed by 0 2 .

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Effect of Hydrogen, Sucrose and Oxygen on Uptake Hydrogenase in Nitrogen-fixing and Ammonium-grown Pseudomonas saccharophila ATCC 15946

Barraquio

Knowles

1988

Microbiology

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Autotrophic growth and hydrogenase activity ofPseudomonas saccharophilastrains

Cited by 1 publication

References 23 publications

Effect of Hydrogen, Sucrose and Oxygen on Uptake Hydrogenase in Nitrogen-fixing and Ammonium-grown Pseudomonas saccharophila ATCC 15946

Effect of Hydrogen, Sucrose and Oxygen on Uptake Hydrogenase in Nitrogen-fixing and Ammonium-grown Pseudomonas saccharophila ATCC 15946

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