Table 1.

Bacterial strains used in this study

Strain	Characteristics	Reference
U112	Wild-type F. novicida	ATCC 15482
JLO	U112 with deletion in FTN_1390, where SKX vector inserts; identical growth and virulence with respect to U112	Ludu et al. (2008b)
GB2	U112 with point mutation in global virulence regulator, mglA	Baron & Nano (1998)
ΔpdpA	JLO with a deletion of pdpA	This study
ΔpdpA/SKX : : pdpA	ΔpdpA complemented with the integrating pJL-SKX : : pdpA construct	This study
ΔiglC	JLO with a deletion of iglC	de Bruin et al. (2007)