Abstract

100 μM of uranyl acetate increased the fixation of nitrogen in presence of 25 μM of lanthanum sulphate in the culture media. Further increase of lanthanum sulphate in the culture media, having 100 μM of uranyl acetate, shows a decrease to different extents in the three samples of microorganisms. The bacterial sample A 3 shows this decrease to a large extent. 100 μM Uranylazetat erhöhten bei Anwesenheit von 25 μM Lanthansulfat in Kulturmedien die Stickstoffbindung von Azotobacter . Eine weitere Erhöhung an Lanthansulfat ergab bei den drei Azotobacter -Stämmen eine Abnahme der N-Bindung in unterschiedlichem Ausmaße. Azotobacter A 3 zeigte diese Abnahme am ausgeprägtesten.

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