Table 1.

Strains and plasmids used in this study

	Description	Reference
Strains
L. plantarum NCIMB 700,965	PlnEF‐sensitive strain	(Sherwood, 1939)
L. plantarum NCIMB 8,826	PlnEF‐producing strain, parent of WCFS1	(Hayward & Davis, 1956)
L. casei BL23	PlnEF‐resistant reference strain	(Maze et al., 2010)
E. coli DH5α	fhuA2 lac(del)U169 phoA glnV44 Φ80' lacZ(del)M15 gyrA96 recA1 relA1 endA1 thi−1 hsdR17, amplification of cloning vector	(Taylor, Walker, & McInnes, 1993)
Plasmids
pJIM2246	CmR, low‐copy cloning vector	(Renault et al., 1996)
pJIMDH1	pJIM2246 derivative containing strain 965 corC	This work
pJIMDH2	pJIM2246 derivative containing strain EF.A corC	This work
pRV300	EryR AmpR, E. coli Ori pMB1, integrative vector	(Leloup, Ehrlich, Zagorec, & Morel‐Deville, 1997)
pRVDH1	pRV300 derivative used for deletion of corC	This work