Oxidation of ammonia to nitrite by bacteria and archaea is responsible for global emissions
of nitrous oxide directly and indirectly through provision of nitrite and, after further oxidation …

Highlights•Nitrification causes nitrogen losses with impact on crop yield and
environment.•Newly discovered microbes can be important for nitrification in agricultural …

Ammonia-oxidizing archaea (AOA) are one of the most abundant groups of microbes in the
world's oceans and are key players in the nitrogen cycle. Their energy metabolism—the …

Ammonia oxidising archaea are among the most abundant living organisms on Earth and
key microbial players in the global nitrogen cycle. They carry out oxidation of ammonia to …

The ocean is a net source of the greenhouse gas and ozone-depleting substance, nitrous
oxide (N2O), to the atmosphere. Most of that N2O is produced as a trace side product during …

Nitrogen fertilisation of agricultural soil contributes significantly to emissions of the potent
greenhouse gas nitrous oxide (N2O), which is generated during denitrification and, in oxic …

Nitrification is the aerobic process of the nitrogen cycle that converts ammonia to nitrate and
is facilitated by ammonia-oxidizing and nitrite-oxidizing microorganisms. Ammonia-oxidizers …

Chemolithotrophic ammonia-oxidizing bacteria and Thaumarchaeota are central players in
the global nitrogen cycle. Obligate ammonia chemolithotrophy has been characterized for …

Ammonia oxidation is a fundamental core process in the global biogeochemical nitrogen
cycle. Oxidation of ammonia (NH3) to nitrite (NO2−) is the first and rate-limiting step in …

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 …