Production of NO, N2O and N2 by extracted soil bacteria, regulation by NO2(-) and O2 concentrations. |
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| Authors: | Nicholas Morley Elizabeth M Baggs Peter D?rsch Lars Bakken |
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| Institution: | School of Biological Sciences, Plant and Soil Science, University of Aberdeen, Aberdeen, UK. n.morley@abdn.ac.uk |
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| 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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