Production of NO, N2O and N2 by extracted soil bacteria, regulation by NO2(-) and O2 concentrations
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Updated: Jul 5, 2026

Single-throughput Complementary High-resolution Analytical Techniques for Characterizing Complex Natural Organic Matter Mixtures
Published on: January 7, 2019
Nicholas Morley1, Elizabeth M Baggs, Peter Dörsch
1School of Biological Sciences, Plant and Soil Science, University of Aberdeen, Aberdeen, UK. n.morley@abdn.ac.uk
Abstract:
The oxygen control of denitrification and its emission of NO/N2O/N2 was investigated by incubation of Nycodenz-extracted soil bacteria in an incubation robot which monitors O2, NO, N2O and N2 concentrations (in He+O2 atmosphere). Two consecutive incubations were undertaken to determine (1) the regulation of denitrification by O2 and NO2(-) during respiratory O2 depletion and (2) the effects of re-exposure to O2 of cultures with fully expressed denitrification proteome. Early denitrification was only detected (as NO and N2O) at
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