The environmental controls that govern the end product of bacterial nitrate respiration.

Kraft B, Tegetmeyer H, Sharma R, Klotz M, Ferdelman T, Hettich R, Geelhoed J, Strous M (2014)
Science 345(6197): 676-679.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
In the biogeochemical nitrogen cycle, microbial respiration processes compete for nitrate as an electron acceptor. Denitrification converts nitrate into nitrogenous gas and thus removes fixed nitrogen from the biosphere, whereas ammonification converts nitrate into ammonium, which is directly reusable by primary producers. We combined multiple parallel long-term incubations of marine microbial nitrate-respiring communities with isotope labeling and metagenomics to unravel how specific environmental conditions select for either process. Microbial generation time, supply of nitrite relative to nitrate, and the carbon/nitrogen ratio were identified as key environmental controls that determine whether nitrite will be reduced to nitrogenous gas or ammonium. Our results define the microbial ecophysiology of a biogeochemical feedback loop that is key to global change, eutrophication, and wastewater treatment.
Erscheinungsjahr
2014
Zeitschriftentitel
Science
Band
345
Ausgabe
6197
Seite(n)
676-679
ISSN
0036-8075
eISSN
1095-9203
Page URI
https://pub.uni-bielefeld.de/record/2690077

Zitieren

Kraft B, Tegetmeyer H, Sharma R, et al. The environmental controls that govern the end product of bacterial nitrate respiration. Science. 2014;345(6197):676-679.
Kraft, B., Tegetmeyer, H., Sharma, R., Klotz, M., Ferdelman, T., Hettich, R., Geelhoed, J., et al. (2014). The environmental controls that govern the end product of bacterial nitrate respiration. Science, 345(6197), 676-679. doi:10.1126/science.1254070
Kraft, B., Tegetmeyer, H., Sharma, R., Klotz, M., Ferdelman, T., Hettich, R., Geelhoed, J., and Strous, M. (2014). The environmental controls that govern the end product of bacterial nitrate respiration. Science 345, 676-679.
Kraft, B., et al., 2014. The environmental controls that govern the end product of bacterial nitrate respiration. Science, 345(6197), p 676-679.
B. Kraft, et al., “The environmental controls that govern the end product of bacterial nitrate respiration.”, Science, vol. 345, 2014, pp. 676-679.
Kraft, B., Tegetmeyer, H., Sharma, R., Klotz, M., Ferdelman, T., Hettich, R., Geelhoed, J., Strous, M.: The environmental controls that govern the end product of bacterial nitrate respiration. Science. 345, 676-679 (2014).
Kraft, Beate, Tegetmeyer, Halina, Sharma, Ritin, Klotz, Martin, Ferdelman, Timothy, Hettich, Robert, Geelhoed, Jeanine, and Strous, Marc. “The environmental controls that govern the end product of bacterial nitrate respiration.”. Science 345.6197 (2014): 676-679.

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