Results 41 to 50 of about 1,479 (179)

Genomic profiling ofNitrospiraspecies reveals ecological success of comammoxNitrospira [PDF]

, 2019
AbstractNitrification was long thought to consist in the stepwise oxidation of ammonia to nitrite and of nitrite to nitrate by ammonia oxidizing and nitrite oxidizing microorganisms, respectively. Recently, single microorganisms capable of complete ammonia to nitrate oxidation (comammox) were identified in theNitrospiragenus.
Palomo, Alejandro, Dechesne, Arnaud, Smets, Barth F.   +2 more
openaire   +1 more source

Activity and Metabolic Versatility of Complete Ammonia Oxidizers in Full-Scale Wastewater Treatment Systems

mBio, 2020
The recent discovery of complete ammonia oxidizers (comammox) contradicts the paradigm that chemolithoautotrophic nitrification is always catalyzed by two different microorganisms.
Yuchun Yang, Holger Daims, Yang Liu, Craig W. Herbold, Petra Pjevac, Jih-Gaw Lin, Meng Li, Ji-Dong Gu   +7 more
doaj   +1 more source

AmoA-Targeted Polymerase Chain Reaction Primers for the Specific Detection and Quantification of Comammox Nitrospira in the Environment

Frontiers in Microbiology, 2017
Nitrification, the oxidation of ammonia via nitrite to nitrate, has always been considered to be catalyzed by the concerted activity of ammonia- and nitrite-oxidizing microorganisms.
Petra Pjevac, Clemens Schauberger, Lianna Poghosyan, Craig W. Herbold, Maartje A. H. J. van Kessel, Anne Daebeler, Michaela Steinberger, Mike S. M. Jetten, Sebastian Lücker, Michael Wagner, Holger Daims   +10 more
doaj   +1 more source

Ammonia- and Nitrite-Oxidizing Bacteria are Dominant in Nitrification of Maize Rhizosphere Soil Following Combined Application of Biochar and Chemical Fertilizer

Frontiers in Microbiology, 2021
Autotrophic nitrification is regulated by canonical ammonia-oxidizing archaea (AOA) and bacteria (AOB) and nitrite-oxidizing bacteria (NOB). To date, most studies have focused on the role of canonical ammonia oxidizers in nitrification while neglecting ...
Ping Sun, Ziting Zhao, Pingshan Fan, Wei Chen, Yunze Ruan, Qing Wang   +5 more
doaj   +1 more source

Ammonia oxidation: Ecology, physiology, biochemistry and why they must all come together [PDF]

, 2018
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 and is carried out by distinct groups of microorganisms ...
Abby, Arp, Balasubramanian, Bates, Bayer, Berg, Blainey, Brochier-Armanet, Burton, Cantera, Caranto, Cho, Costa, Daebeler, Daims, Daims, De Boer, de la Torre, Ensign, Fiencke, Frankland, Fumasoli, Gubry-Rangin, Hatzenpichler, Hayatsu, Herbold, Hink, Hommes, Hu, Jung, Jung, Karner, Kerou, Kim, Kits, Koskinen, Kozlowski, Kozlowski, Kozlowski, Könneke, Könneke, Laura E Lehtovirta-Morley, Lawson, Lawton, Lebedeva, Lehtovirta-Morley, Lehtovirta-Morley, Lehtovirta-Morley, Lehtovirta-Morley, Leininger, Lieberman, Martens-Habbena, Martens-Habbena, Merbt, Mussmann, Palatinszky, Palomo, Pester, Pjevac, Placella, Prosser, Purkhold, Rotthauwe, Santoro, Sauder, Sauder, Schloesing, Shen, Shen, Spang, Spang, Stieglmeier, Stieglmeier, Suzuki, Taylor, Tourna, Tourna, Treusch, Vajrala, van Kessel, Verhamme, Walker, Wang, Weber, Wijma, Winogradsky, Wuchter, Zeng   +87 more
core   +1 more source

Metagenomic analysis of rapid gravity sand filter microbial communities suggests novel physiology of Nitrospira spp [PDF]

, 2016
Rapid gravity sand filtration is a drinking water production technology widely used around the world. Microbially catalyzed processes dominate the oxidative transformation of ammonia, reduced manganese and iron, methane and hydrogen sulfide, which may ...
Fowler, Jane, Gülay, Arda, Palomo, Alejandro, Rasmussen, Simon, Sicheritz-Pontén, Thomas, Smets, Barth F.   +5 more
core   +1 more source

Ammonia-oxidizing archaea and complete ammonia-oxidizing Nitrospira in water treatment systems

Water Research X, 2022
Nitrification, the oxidation of ammonia to nitrate via nitrite, is important for many engineered water treatment systems. The sequential steps of this respiratory process are carried out by distinct microbial guilds, including ammonia-oxidizing bacteria (
Sarah Al-Ajeel, Emilie Spasov, Laura A. Sauder, Michelle M. McKnight, Josh D. Neufeld   +4 more
doaj   +1 more source

Cyclic Conversions in the Nitrogen Cycle

Frontiers in Microbiology, 2021
The cyclic nature of specific conversions in the nitrogen cycle imposes strict limitations to the conversions observed in nature and explains for example why anaerobic ammonium oxidation (anammox) bacteria can only use nitrite – and not nitrate – as ...
Robbert Kleerebezem, Sebastian Lücker
doaj   +1 more source

Existence and distribution of novel phylotypes of Nitrospira in water columnsof the South China Sea

iScience, 2022
Summary: In the biological nitrogen cycle, nitrite oxidation is performed by nitrite oxidation bacteria, of which Nitrospira is widespread and diverse. Communities of Nitrospira were collected at 25–1500 m depths in the South China Sea.
Wei Sun, Lijing Jiao, Jiapeng Wu, Jiaqi Ye, Mingken Wei, Yiguo Hong   +5 more
doaj   +1 more source

Exploring bacterial communities in aquaponic systems [PDF]

, 2019
Aquaponics is a production system based on the dynamic equilibrium between fish, plants, and microorganisms. In order to better understand the role of microorganisms in this tripartite relationship, we studied the bacterial communities hosted in eight ...
Eck, Mathilde, Jijakli, M., Junge, Ranka, Massart, Sébastien, Sare, Abdoul, Schmautz, Zala, Smits, Theo H. M.   +6 more
core   +1 more source