< Back to Article
Low Probability of Initiating nirS Transcription Explains Observed Gas Kinetics and Growth of Bacteria Switching from Aerobic Respiration to Denitrification
Figure 11
Sensitivity analysis (1): Varying initial O2 in the headspace 
within a low range.
The figure shows the impact of varying 
within a low range on: A. O2 concentration in the liquid-phase 
, B. The number of aerobically growing cells (
), which do not possess denitrification enzymes, C. The rate of recruitment of 
to denitrification (
), and D. N2 accumulation. Marked in Panel A, 
is the 
below which 
triggers, and 
is the 
below which 
terminates. In Panel C, the spikes of recruitment (following the initial recruitment) are due to spikes of O2 by sampling, causing 
to transiently exceed 
. The model predicts that reducing 
within a low range (Panel A) will lower the number of aerobically grown cells (Panel B) and, thereby, the recruitment rate (Panel C), thus increasing the time taken to deplete 
(slower N2 accumulation, Panel D).
doi: https://doi.org/10.1371/journal.pcbi.1003933.g011