Selective enrichment of high-affinity clade II N₂O-reducers in a mixed culture.

ABSTRACT: Microorganisms encoding for the N₂O reductase (NosZ) are the only known biological sink of the potent greenhouse gas N₂O and are central to global N₂O mitigation efforts. Clade II NosZ populations are of particular biotechnological interest as they usually feature high N₂O affinities and often lack other denitrification genes. We focus on the yet-unresolved ecological constraints selecting for different N₂O-reducers strains and controlling the assembly of N₂O-respiring communities. Two planktonic N₂O-respiring mixed cultures were enriched at low dilution rates under limiting and excess dissolved N₂O availability to assess the impact of substrate affinity and N₂O cytotoxicity, respectively. Ge

SUBMITTER: Laureni M 

PROVIDER: S-EPMC11906303 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature