NADH-dependent glutamate synthase plays a crucial role in assimilating ammonium in the Arabidopsis root.

  title={NADH-dependent glutamate synthase plays a crucial role in assimilating ammonium in the Arabidopsis root.},
  author={Noriyuki Konishi and Keiki Ishiyama and Kaya Matsuoka and Ikumi Maru and Toshihiko Hayakawa and Tomoyuki Yamaya and Soichi Kojima},
  journal={Physiologia plantarum},
  volume={152 1},
Plant roots under nitrogen deficient conditions with access to both ammonium and nitrate ions, will take up ammonium first. This preference for ammonium rather than nitrate emphasizes the importance of ammonium assimilation machinery in roots. Glutamine synthetase (GS) and glutamate synthase (GOGAT) catalyze the conversion of ammonium and 2-oxoglutarate to glutamine and glutamate. Higher plants have two GOGAT species, ferredoxin-dependent glutamate synthase (Fd-GOGAT) and nicotinamide adenine… CONTINUE READING
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