Table 1.

Strains and plasmids used in this study.

Strains and plasmids	Description	Source or reference
Plasmids
pYA4278	SacB mobRP4 R6K ori Cm+, pRE112-T-vector	[6]
pSS239	ΔrfbB6	pYA4278
pSS240	ΔrffG8	pYA4278
pYA4284	ΔpagL7	[35]
pSS242	ctcgag AGGA gtcatt GTG	pSS241
pSS243	ctcgag AGGA gtcatt ATG	pSS241
pSS244	ctcgag GGAA gtcatt ATG	pSS241
pSS245	ctcgag GGAA gtcatt GTG	pSS241
pYA4518	GFP p15A ori Cm+	[37]
pYA3700	TT araC PBAD cassette plasmid; Apr	[39]
pSS250	pYA4518-rfbB
pSS251	pYA4518-rffG
Bacterial strains
S100	Wild-type S. Typhimurium, isolated from infected duck	[40]
S340	S. Choleraesuis, wild-type virulent	[40]
S246	S. Enteritidis, wild-type virulent	[40]
S490	ΔrfbB6	S100
S491	ΔrffG8	S100
S492	ΔrfbB6 ΔrffG8	S491
S493	ΔrfbB6 ΔrffG7 ΔpagL7	S492
S494	ΔrfbB6 ΔrffG7 ΔpagL71:TT araC PBAD rfbB-1	S493
S495	ΔrfbB6 ΔrffG7 ΔpagL72:TT araC PBAD rfbB-2	S493
S496	ΔrfbB6 ΔrffG7 ΔpagL73:TT araC PBAD rfbB-3	S493
S497	ΔrfbB6 ΔrffG7 ΔpagL74:TT araC PBAD rfbB-4	S493
E. coli
χ7232	endA1 hsdR17 (${\mathrm{r}}_{\mathrm{K}}^{-}{\mathrm{m}}_{\mathrm{K}}^{+}$) glnV44 thi-1 recA1 gyrA relA1 Δ(lacZYA-argF)U169 λpir deoR (Φ80dlac Δ (lacZ)M15)	[41]
χ7213	thi-1 thr-1 leuB6 glnV44 fhuA21 lacY1 recA1 RP4- 2-Tc::Mu[λ pir] ΔasdA4 Δ(zhf-2:Tn10)	[41]