Despite the fact that heterotrophic nitrification was identified more than 100 years ago, the
biochemistry of heterotrophic nitrifiers is poorly known and their contribution to nitrification in …

While the diversity of processes included under a broad definition of nitrification has recently
expanded, the oxidation of ammonia and nitrite by chemolithotrophic bacteria and archaea …

Bacteria and fungi were isolated from an acid forest soil in which nitrification occurred via a
heterotrophic pathway. Enrichment of soil in a liquid inorganic salts medium, containing β …

Nitrogen cycle, a most important elemental cycle in earth ecosystem, is carried out by three
major microbial processes including nitrogen fixation, nitrification and denitrification …

Nitrification, as a crucial step in nitrogen cycling and plant nutrition, is a biologically
mediated process responsible for enormous losses of nitrogen fertilizer and a contributor to …

Microorganisms play important roles in the nitrogen cycles of various ecosystems. Research
has revealed that a greater diversity of microorganisms is involved in the nitrogen cycle than …

Nitrification in acid soils was first reported in the beginning of the 20th century. Although this
finding has been well substantiated by countless studies since then, it has until recently …

Ammonia conversion processes are essential for most soil and aquatic systems. Under
natural conditions, the many possible reactions are difficult to analyze. For example …

Nitrifier denitrification is the reduction of nitrite (NO 2−) by ammonia-oxidizing bacteria. This
process may account for up to 100% of nitrous oxide (N 2 O) emissions from ammonium (NH …

Nitrate was formed from ammonium at pH 3.2 to 6.1 in suspensions of a naturally acid forest
soil; the maximum rates of formation occurred at ca. pH 4 to 5. Nitrate was also formed from …