Denitrification in P. fluorescens F113. (A) Denitrification genes organization in P. fluorescens F113. Numbers above arrows indicate feature code (PSF113_XXXX). (B) Growth test in anaerobic conditions of P. fluorescens F113 and Pf0-1 in the presence or absence of KNO3 as electron acceptor. Growth is observed as turbidity. (C) NaNO2 depletion measured by NitriVer® 5 reagent. Red colour shows the presence of nitrite in the medium.