Fig. 1: Influence of nitrogen feeding regime (defined by NH3:NO2:NO3 ratio) and oxygen concentration (1.0, 1.5, 3.0 and 93.8 µM) on comammox Nitrospira and anammox bacteria community.
From: Competitive and substrate limited environments drive metabolic heterogeneity for comammox Nitrospira
Relative abundances of Nitrospira metabolic activities (AO, NO, CMX, NRMX and An-NRMX) and anammox bacteria (AMX), with each correspondent floc images (bottom panels) under A ammonia feeding (NH3:NO2:NO3 = 500:0:0 µM), B equimolar feeding (NH3:NO2:NO3 = 500:500:500 µM), and C non-equimolar feeding (NH3:NO2:NO3 = 500:375:500 µM). Labels over each bar show Anammox:Nitrospira ratio at steady state. The statistical significance between different oxygen concentrations and nitrogen feeding regimes are shown in Supplementary Tables S7 and S8, respectively. Black circles on floc images represent inactive individuals. Additional floc images of comammox Nitrospira and anammox community are shown in the Supplementary Fig S2.
