Purpose Microorganisms play important ecological roles in NO 3− pool production, eg,
through autotrophic nitrification (the oxidation of NH 4+ to NO 3−) and heterotrophic …

Soil emission of gaseous N oxides during nitrification of ammonium represents loss of an
available plant nutrient and has an important impact on the chemistry of the atmosphere. We …

Gas chromatographic studies showed that nitrous oxide was produced in each instance
when sterilized (autoclaved) soil was incubated after treatment with ammonium sulfate and …

Nitrifier denitrification (ie nitrite reduction by ammonia oxidizers) is one of the biochemical
pathways of nitrous oxide (N2O) production. It is increasingly suggested that this pathway …

Twelve denitrifying bacteria representing six genera were tested for an ability to nitrify
pyruvic oxime heterotrophically. Six of these bacteria exhibited appreciable nitrification …

Chemoautotrophic ammonia‐oxidizers and nitrite‐oxidizers are responsible for a significant
amount of soil nitrate production. The identity and composition of these active nitrifiers in …

Biological ammonia (NH 3) oxidation to nitrate (NO 3–)––nitrification––is a critical pathway
of the biogeochemical nitrogen cycle. Additional products and by-products of this pathway …

Two separate and distinct steps are involved in chemoautotrophic nitrification. In the first,
ammonium is oxidized to nitrite by ammonium‐oxidizing bacteria, or broadly speaking, the …

Nitrification is a central process in the global nitrogen cycle, carried out by a complex
network of ammonia-oxidizing archaea (AOA), ammonia-oxidizing bacteria (AOB), complete …

Nitrification is the microbial conversion of reduced forms of nitrogen (N) to nitrate (NO3−),
and in fertilized soils it can lead to substantial N losses via NO3− leaching or nitrous oxide …