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Nitrospira.

Holger Daims1, Michael Wagner1

  • 1Department of Microbiology and Ecosystem Science, Research Network Chemistry Meets Microbiology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria.

Trends in Microbiology
|March 5, 2018
PubMed
Summary
This summary is machine-generated.

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Nitrospira bacteria are crucial for nitrification, converting ammonia to nitrate. Some unique Nitrospira can perform both steps of nitrification, showcasing remarkable metabolic versatility in diverse environments.

Area of Science:

  • Microbiology
  • Environmental Science
  • Biogeochemistry

Background:

  • Nitrospira are aerobic chemolithoautotrophic nitrite-oxidizing bacteria.
  • They are key players in the nitrogen cycle, oxidizing nitrite to nitrate.
  • They often associate with ammonia-oxidizing bacteria and archaea.

Purpose of the Study:

  • To illustrate the metabolic functions of Nitrospira.
  • To highlight their role in nitrification and environmental processes.
  • To showcase their adaptability to various habitats and conditions.

Main Methods:

  • Infographic presentation of metabolic pathways.
  • Description of symbiotic and 'reciprocal feeding' interactions.
  • Highlighting the discovery of complete ammonia oxidizers (comammox).

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Main Results:

  • Nitrospira oxidize nitrite to nitrate, a critical step in nitrification.
  • Some Nitrospira strains can utilize alternative substrates like H2 and formate.
  • Complete ammonia oxidizers (comammox) within Nitrospira can perform both steps of nitrification.
  • Metabolic flexibility allows Nitrospira to thrive in diverse environmental conditions.

Conclusions:

  • Nitrospira exhibit significant metabolic versatility.
  • This versatility enables them to colonize various habitats and adapt to environmental changes.
  • Nitrospira play a multifaceted role in nitrification and broader biogeochemical cycles.