Extended Data Fig. 5: Inhibition can occur during abiotic reactions between nitrite and Fe(II).
From: Inhibition of phototrophic iron oxidation by nitric oxide in ferruginous environments

Photoferrotrophs R. ferrooxidans SW2 (top), Rhodovulum iodosum (middle) and Chlorobium sp. N1 (bottom) grown alone with different nitrite concentrations (listed at the top of the figure). All strains show inhibition suggesting the abiotic reaction between nitrite and Fe(II) can be inhibitory if the nitrite concentrations are high enough. 10 mM Fe(II) was added to all cultures.