Table 1

Strains used in this study

StrainRelevant genotypeRef.
E. coli
 CA 46Produces salmochelin and microcins M  and H47 (formerly called colicin G) 11
 K-12 H1443 aroB 18
 K-12 H1876aroB cir fiu∷Mud1X fepA∷Tn1018
S. enterica
 Typhimurium LT2Lab collection
 Paratyphi B IHS 1319B. Stocker
 Stanleyville207/818
 WR1359 as 207/81 but iroN∷pGP704This work
 WR1361 as 207/81 but cir∷MudJThis work
 WR1363 as 207/81 but iroN∷pGP704 cir∷MudJThis work
 WR1366 as 207/81 but iroN∷pGP704 fepA∷Tn10This work
 WR1367 as 207/81 but cir∷MudJ fepA∷Tn10This work
 WR1368 as 207/81 but iroN∷pGP704 cir∷MudJ                    fepA∷Tn10This work
 ATCC14028, serotype Typhimurium4, 5
 AIR49 as 14028 but aroA∷Tn10 iroBC∷kan4, 5
 AIR50 as 14028 but aroA∷Tn10 iroD∷kanA. Bäumler
 H5546 as AIR49 but aroA+iroBC∷kanThis work
 H5547 as AIR50 but aroA+iroD∷kanThis work