Short CommunicationComammox Nitrospira clade B contributes to nitrification in soil
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Nitrification was long considered a two-step process with ammonia oxidized to nitrite followed by oxidation to nitrate by two functionally-distinct groups: ammonia and nitrite oxidizers (Winogradsky, 1890; Bock and Wagner, 1992; Könneke et al., 2005). However, microorganisms capable of complete oxidation of ammonia to nitrate (comammox) have recently been discovered (van Kessel et al., 2015; Daims et al., 2015; Pinto et al., 2015). Comammox bacteria belong to the genus Nitrospira, organisms
Financial interests
The authors declare no competing financial interests.
Acknowledgments
We thank Dr. Holger Daims from the University of Vienna for his valuable suggestions for this study, data interpretation and manuscript preparation. This work was supported by the National Natural Science Foundation of China (41671232), and the National Key Research and Development Program of China (2016YFD0300901). GN is funded by the AXA Research Fund.
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