Nitrosomonas nitrosa

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Nitrosomonas nitrosa
Systematics
Department : Proteobacteria
Class : Betaproteobacteria
Order : Nitrosomonadales
Family : Nitrosomonadaceae
Genre : Nitrosomonas
Type : Nitrosomonas nitrosa
Scientific name
Nitrosomonas nitrosa
Koops et al. 2001

Nitrosomonas nitrosa is a species of bacteria in the genus Nitrosomonas . It is a nitrifying bacterial species which metabolizes ammonia (NH 3 ) to nitrite (NO 2 - ) and thereby gains energy.

features

The cells are spherical or rod-shaped with rounded corners measuring 1.3-1.5 X 1.4-2.2 micrometers. Like all bacteria of the Proteobacteria group, the species is gram-negative . Nitrosomonas nitrosa is aerobic , oxygen is required for metabolism. The bacteria are able to use urea as a source of ammonium. Nitrosomonas nitrosa , like all members of the Nitrosomonadaceae family , is chemolithoautotrophic , i. H. Inorganic electron donors (ammonia) are used to generate energy, the species does not depend on organic energy and carbon sources.

Nitrosomonas nitrosa has been isolated from eutrophic waters, and more rarely from rivers and soil.

metabolism

Like all Nitrosomonadaceae, Nitrosomonas nitrosa is one of the nitrifiers. The metabolism is based on nitrification , ammonia (NH 3 ) is oxidized to nitrite (NO 2 - ).

The oxidation of ammonia brings electrons into an electron transport chain . A proton motor force is generated, which ultimately leads to the formation of ATP . For carbon fixation , the nitrifying bacteria use the Calvin cycle , which is also used during photosynthesis in plants.

Individual evidence

  1. ↑ Martin Dworkin, Stanley Falkow, Eugene Rosenberg, Karl-Heinz Schleifer, Erko Stackebrandt (eds.) The Prokaryotes, A Handbook of the Biology of Bacteria . Volume 5: Proteobacteria: Alpha and Beta Subclasses , 3rd edition, Springer-Verlag, New York et al. O., 2006, ISBN 978-0-387-25495-1 (print) and ISBN 978-0-387-30743-5 (Online), doi : 10.1007 / 0-387-30743-5 .
  2. ↑ George M. Garrity: Bergey's manual of systematic bacteriology . 2nd Edition. Springer, New York 2005, Vol. 2: The Proteobacteria Part C: The Alpha-, Beta-, Delta-, and Epsilonproteabacteria , ISBN 0-387-24145-0

literature

  • Michael T. Madigan, John M. Martinko, Jack Parker: Brock - Microbiology . 11th edition. Pearson Studium, Munich 2006, ISBN 3-8274-0566-1
  • George M. Garrity: Bergey's manual of systematic bacteriology . 2nd Edition. Springer, New York 2005, Vol. 2: The Proteobacteria Part C: The Alpha-, Beta-, Delta-, and Epsilonproteabacteria , ISBN 0-387-24145-0

Web links

  • Genus Nitrosomonas - LPSN List of Prokaryotic Names with Standing in Nomenclature
  • A little glimpse into the world of bacteria - AquaCare. Sellner, BR 1997: A little glimpse into the world of bacteria - biological metabolic processes in the aquarium using the example of nitrogen oxidation (nitrification).