Table 1.

Strains used in this study.

Lineage	Strain	Genotype	Origin	Identification	References
I	H7858	WT	1998 hot dog outbrea0*k, US	FSL F6-0366	Nelson et al., 2004
I	H7858	ΔsigB	H7858	FSL K5-0018	Bergholz et al., 2013
II	10403S	WT	Laboratory type strain	FSL X1-0001	Bishop and Hinrichs, 1987
II	10403S	ΔsigB	10403S	FSL A1-0254	Wiedmann et al., 1998