Ammonium assimilation in an Arthrobacter sp. “fluorescens”

Ammonium assimilation was studied in a nitrogenfixing Arthrobacter strain grown in both batch and ammonium-limited continuous cultures. Arthrobacter sp. “fluorescens” grown in nitrogen-free medium or at low ammonium levels assimilated NH 4 + via the glutamine synthetase/glutamate synthase pathway. When ammonium was in excess it was assimilated via the… (More)