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Table 3 Rates of N2O and N2 emission in WT and ΔMgfnr mutant after nitrate addition and rates of O2 consumption during aerobic respiration

From: The oxygen sensor MgFnr controls magnetite biomineralization by regulation of denitrification in Magnetospirillum gryphiswaldense

Culture (2% oxygen) N2O emission N2emission O2consumption
(μM/mina) (μM/min) (μM/min)
WT without nitrate NDb ND 50.7 ± 10.0
ΔMgfnr mutant without nitrate ND ND 44.0 ± 2.0
WT with nitrate 14.1 ± 2.0 0.7 ± 0.5 41.3 ± 2.0
ΔMgfnr mutant with nitrate 12.0 ± 2.0 0.4 ± 0.2 44.0 ± 4.7
  1. aThe values (in μM per min for a cell suspension of OD565 nm of 1) are the average of eight independent experiments. bND: not detectable.