Autotrophic ammonia oxidation is performed by two distinct groups of microorganisms:
ammonia-oxidising archaea (AOA) and ammonia-oxidising bacteria (AOB). AOA outnumber …

Ammonia oxidation is the first and rate-limiting step in nitrification and is dominated by two
distinct groups of microorganisms in soil: ammonia-oxidizing archaea (AOA) and ammonia …

Studies of the distribution of ammonia oxidising archaea (AOA) and bacteria (AOB) suggest
distinct ecological niches characterised by ammonia concentration and pH, arising through …

All cultivated ammonia-oxidizing archaea (AOA) within the Nitrososphaera cluster (former
soil group 1.1 b) are neutrophilic. Molecular surveys also indicate the existence of …

Genes of archaea encoding homologues of ammonia monooxygenases have been found
on a widespread basis and in large amounts in almost all terrestrial and marine …

Autotrophic archaeal and bacterial ammonia-oxidisers (AOA and AOB) drive soil nitrification.
Ammonia limitation, mixotrophy, and pH have been suggested as factors providing niche …

Increasing evidence demonstrated the involvement of ammonia-oxidizing archaea (AOA) in
the global nitrogen cycle, but the relative contributions of AOA and ammonia-oxidizing …

Autotrophic ammonia-oxidizing bacteria were considered to be responsible for the majority
of ammonia oxidation in soil until the recent discovery of the autotrophic ammonia-oxidizing …

Nitrification is a microbially mediated process that plays a central role in the global cycling of
nitrogen and is also of economic importance in agriculture and wastewater treatment. The …

The first step of nitrification, oxidation of ammonia to nitrite, is performed by both ammonia-
oxidising archaea (AOA) and ammonia-oxidising bacteria (AOB) in soil, but their relative …