Comammox-a newly discovered nitrification process in the terrestrial nitrogen cycle
Hang-Wei Hu, Ji-Zheng He
JOURNAL OF SOILS AND SEDIMENTS | SPRINGER HEIDELBERG | Published : 2017
Purpose: Nitrification, the microbial oxidation of ammonia to nitrate via nitrite, is a pivotal component of the biogeochemical nitrogen cycle. Nitrification was conventionally assumed as a two-step process in which ammonia oxidation was thought to be catalyzed by ammonia-oxidizing archaea (AOA) and bacteria (AOB), as well as nitrite oxidation by nitrite-oxidizing bacteria (NOB). This long-held assumption of labour division between the two functional groups, however, was challenged by the recent unexpected discovery of complete ammonia oxidizers within the Nitrospira genus that are capable of converting ammonia to nitrate in a single organism (comammox). This breakthrough raised fundamental ..View full abstract
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Awarded by Natural Science Foundation of China
Awarded by Australian Research Council
This work was financially supported by Natural Science Foundation of China (41230857) and the Australian Research Council (DE150100870; DP160101028).