Publication Date:
2014-08-30
Description:
The bacterial oxidation of nitrite to nitrate is a key process of the biogeochemical nitrogen cycle. Nitrite-oxidizing bacteria are considered a highly specialized functional group, which depends on the supply of nitrite from other microorganisms and whose distribution strictly correlates with nitrification in the environment and in wastewater treatment plants. On the basis of genomics, physiological experiments, and single-cell analyses, we show that Nitrospira moscoviensis, which represents a widely distributed lineage of nitrite-oxidizing bacteria, has the genetic inventory to utilize hydrogen (H2) as an alternative energy source for aerobic respiration and grows on H2 without nitrite. CO2 fixation occurred with H2 as the sole electron donor. Our results demonstrate a chemolithoautotrophic lifestyle of nitrite-oxidizing bacteria outside the nitrogen cycle, suggesting greater ecological flexibility than previously assumed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koch, Hanna -- Galushko, Alexander -- Albertsen, Mads -- Schintlmeister, Arno -- Gruber-Dorninger, Christiane -- Lucker, Sebastian -- Pelletier, Eric -- Le Paslier, Denis -- Spieck, Eva -- Richter, Andreas -- Nielsen, Per H -- Wagner, Michael -- Daims, Holger -- New York, N.Y. -- Science. 2014 Aug 29;345(6200):1052-4. doi: 10.1126/science.1256985.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Ecosystem Science, Division of Microbial Ecology, University of Vienna, 1090 Vienna, Austria. ; Center for Microbial Communities, Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, 9000 Aalborg, Denmark. ; Department of Microbiology and Ecosystem Science, Division of Microbial Ecology, University of Vienna, 1090 Vienna, Austria. Large Instrument Facility for Advanced Isotope Research, University of Vienna, 1090 Vienna, Austria. ; Commissariat a l'Energie Atomique, Direction des Sciences du Vivant, Institut de genomique, Genoscope, 91057 Evry, France. Centre National de la Recherche Scientifique, UMR8030, 91057 Evry, France. Universite d'Evry Val d'Essonne, 91057 Evry, France. ; Biozentrum Klein Flottbek, Microbiology and Biotechnology, University of Hamburg, 22609 Hamburg, Germany. ; Department of Microbiology and Ecosystem Science, Division of Terrestrial Ecosystem Research, University of Vienna, 1090 Vienna, Austria. ; Department of Microbiology and Ecosystem Science, Division of Microbial Ecology, University of Vienna, 1090 Vienna, Austria. daims@microbial-ecology.net.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25170152" target="_blank"〉PubMed〈/a〉
Keywords:
Aerobiosis
;
Bacteria, Aerobic/genetics/*growth & development/*metabolism
;
Chemoautotrophic Growth/genetics/*physiology
;
Energy Metabolism
;
Genetic Loci
;
Hydrogen/*metabolism
;
Hydrogenase/genetics
;
Molecular Sequence Data
;
Nitrates/metabolism
;
Nitrification/genetics/physiology
;
Nitrites/*metabolism
;
*Nitrogen Cycle
;
Oxidation-Reduction
;
Sequence Analysis, DNA
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
Permalink
