Nitrosomonas cryotolerans

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Nitrosomonas cryotolerans
Systematics
Department : Proteobacteria
Class : Betaproteobacteria
Order : Nitrosomonadales
Family : Nitrosomonadaceae
Genre : Nitrosomonas
Type : Nitrosomonas cryotolerans
Scientific name
Nitrosomonas cryotolerans
Jones , Morita , Koops & Watson , 1988

Nitrosomonas cryotolerans 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 rod-shaped with rounded ends o 1.2-2.2 X 2.0-4.0 micrometers in size. Like all bacteria of the Proteobacteria group, the species is gram-negative . Nitrosomonas cryotolerans is aerobic , the bacterium needs oxygen. The syllable cryos in the species name is Greek and stands for frost, the species can be cultivated in the laboratory at temperatures down to −5 ° C.

The species can use urea as a source of ammonium. Nitrosomonas cryotolerans , like all members of the Nitrosomonadaceae family , is chemolithoautotrophic ; H. Inorganic electron donors (ammonia) are used to generate energy, the species does not depend on organic energy and carbon sources.

Nitrosomonas cryotolerans was found in the Gulf of Alaska .

metabolism

Like all Nitrosomonadaceae, Nitrosomonas cryotolerans 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.

Nitrification is an important part of the earth's nitrogen cycle .

Systematics

Nitrosomonas cryotolerans was discovered in 1988 by Ronald D. Jones et al. described, but is not a valid published taxon . The species is not included in the List of Prokaryotic names with Standing in Nomenclature .

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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

Individual evidence

  1. ↑ Ronald D. Jones, Richard Y. Morita, Hans-Peter Koops, Stanley W. Watson: A new marine ammonium-oxidizing bacterium, Nitrosomonas cryotolerans sp. nov. Canadian Journal of Microbiology 34 (10), 1988; Pp. 1122-1128. doi : 10.1139 / m88-198 .
  2. ↑ Taxonomy Browser Nitrosomonas cryotolerans. In: National Center for Biotechnology Information (NCBI) website . Retrieved August 6, 2014 .
  3. ^ Jean Euzéby, Aidan C. Parte: Genus Nitrosomonas. In: List of Prokaryotic names with Standing in Nomenclature ( LPSN ). Retrieved August 6, 2014 .

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).