Ammonia oxidation kinetics determine niche separation of nitrifying Archaea and Bacteria

@article{MartensHabbena2009AmmoniaOK,
  title={Ammonia oxidation kinetics determine niche separation of nitrifying Archaea and Bacteria},
  author={Willm Martens-Habbena and Paul M. Berube and Hidetoshi Urakawa and Jos{\'e} R. de la Torr{\'e} and David A. Stahl},
  journal={Nature},
  year={2009},
  volume={461},
  pages={976-979}
}
The discovery of ammonia oxidation by mesophilic and thermophilic Crenarchaeota and the widespread distribution of these organisms in marine and terrestrial environments indicated an important role for them in the global nitrogen cycle. However, very little is known about their physiology or their contribution to nitrification. Here we report oligotrophic ammonia oxidation kinetics and cellular characteristics of the mesophilic crenarchaeon ‘Candidatus Nitrosopumilus maritimus’ strain SCM1… Expand
Nitrogen metabolism and kinetics of ammonia-oxidizing archaea.
TLDR
The isolation of Nitrosopumilus maritimus strain SCM1 provided the first direct evidence that Group I archaea indeed gain energy from ammonia oxidation and a respirometry setup particularly suited for activity measurements in dilute microbial cultures with extremely low oxygen uptake rates was developed. Expand
Kinetic analysis of a complete nitrifier reveals an oligotrophic lifestyle
TLDR
A pure culture of a comammox bacterium is isolated and it is shown that it is adapted to slow growth in oligotrophic and dynamic habitats on the basis of a high affinity for ammonia, low maximum rate of ammonia oxidation, high growth yield compared to canonical nitrifiers, and genomic potential for alternative metabolisms. Expand
Ammonia-oxidizing archaea possess a wide range of cellular ammonia affinities.
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  • The ISME journal
  • 2021
Nitrification, the oxidation of ammonia to nitrate, is an essential process in the biogeochemical nitrogen cycle. The first step of nitrification, ammonia oxidation, is performed by three, oftenExpand
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TLDR
The results showed that AOA outnumber ammonia-oxidizing bacteria (AOB) by up to four orders of magnitude in cave sediments, and data suggest that despite the alkaline conditions within the cave, the low NH3 concentrations measured continue to favor growth of AOA over AOB populations. Expand
Nitrosopumilus maritimus genome reveals unique mechanisms for nitrification and autotrophy in globally distributed marine crenarchaea
TLDR
The isolation of Candidatus “Nitrosopumilus maritimus” strain SCM1 is reported, revealing highly copper-dependent systems for ammonia oxidation and electron transport that are distinctly different from known ammonia-oxidizing bacteria. Expand
Ammonia oxidation kinetics and temperature sensitivity of a natural marine community dominated by Archaea
TLDR
This study provides substantial evidence, through both amoA gene copies and transcript abundances and the kinetics response, that AOA are the dominant active ammonia oxidizers in this marine environment. Expand
Cultivation of Autotrophic Ammonia-Oxidizing Archaea from Marine Sediments in Coculture with Sulfur-Oxidizing Bacteria
TLDR
The experiments suggest that AOA may be important nitrifiers in low-oxygen environments, such as oxygen-minimum zones and marine sediments, and that archaeal cells became the dominant prokaryotes after biweekly transfers for 20 months. Expand
Diversity, Physiology, and Niche Differentiation of Ammonia-Oxidizing Archaea
TLDR
This minireview provides a synopsis of the current knowledge of the diversity and physiology of AOA, the factors controlling their ecology, and their role in carbon cycling as well as their potential involvement in the production of the greenhouse gas nitrous oxide. Expand
Current insights into the autotrophic thaumarchaeal ammonia oxidation in acidic soils
TLDR
The history and progress in the understanding of the ammonia-oxidizing microorganisms (AOB and AOA) and the mechanisms of nitrification in nutrient-depleted acidic soils are reviewed, and the possible mechanisms shaping the distinct niches of AOA and AOB are presented. Expand
Characterisation of terrestrial acidophilic archaeal ammonia oxidisers and their inhibition and stimulation by organic compounds
TLDR
Physiological diversity within AOA species and between different AOA genera is demonstrated and different preferences for organic compounds potentially influence the favoured localisation of ammonia oxidisers within the soil and the structure of ammonia-oxidising communities in terrestrial ecosystems. Expand
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