Bioelectrochemical Fixation of Nitrogen to Extracellular Ammonium by Pseudomonas stutzeri.

ABSTRACT: Diazotrophs can produce bioavailable nitrogen from inert N₂ gas by bioelectrochemical nitrogen fixation (e-BNF), which is emerging as an energy-saving and highly selective strategy for agriculture and industry. However, current e-BNF technology is impeded by requirements for NH₄⁺ assimilation inhibitors to facilitate intracellular ammonia secretion and precious metal catalysts to generate H₂ as the energy-carrying intermediate. Here, we initially demonstrate inhibitor- and catalystless extracellular NH₄⁺ production by the diazotroph Pseudomonas stutzeri A1501 using an electrode as the sole electron donor. Multiple lines of evidence revealed that P. stutzeri produced 2.32 ± 0.25 mg/liter extracellular NH_4</

SUBMITTER: Chen S 

PROVIDER: S-EPMC8090881 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature