Nitrosomonas marina
| Nitrosomonas marina | ||||||||||||
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| Nitrosomonas marina | ||||||||||||
| Koops et al. 1991 |
Nitrosomonas marina 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 narrow rods with rounded ends measuring 0.7-0.9 X 1.4-2.3 µm. Like all bacteria of the Proteobacteria group, the species is gram-negative . Nitrosomonas marina is aerobic , the bacterium needs oxygen.
The species is able to use urea as a source of ammonium. Nitrosomonas marina , like all members of the Nitrosomonadaceae family , is chemolithoautotrophic , i.e. H. Inorganic electron donors (ammonia) are used to generate energy, the species does not depend on organic energy and carbon sources.
Nitrosomonas marina occurs in seas.
metabolism
Like all Nitrosomonadaceae, Nitrosomonas marina 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 plays an important role in the earth's nitrogen cycle .
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
- HP Koops, B. Böttcher, UC Möller, A. Pommerening-Röser and G. Stehr: Classification of eight new species of ammonia-oxidizing bacteria: Nitrosomonas communis sp. nov., Nitrosomonas ureae sp. nov., Nitrosomonas aestuarii sp. nov., Nitrosomonas marina sp. nov., Nitrosomonas nitrosa sp. nov., Nitrosomonas eutropha sp. nov., Nitrosomonas oligotropha sp. nov. and Nitrosomonas halophila sp. nov In: Journal of General Micrology , July 1991, Volume 137, pp. 1689-1699 doi : 10.1099 / 00221287-137-7-1689 Online
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).