Table 1.

Bacterial strains used in this study.

Strains /Plasmid	Relevant characteristics	References/Source
S. mutans UA159	wild-type	Ajdic et al., 2002
S. mutans SAN136	ΔspaP, Kanr	Ahn et al., 2008
S. mutans SAB106	ΔgtfB, Kanr	The Burne lab
S. mutans SAB108	ΔgtfC, Kanr	The Burne lab
S. mutans SAB109	ΔgtfBC, Kanr	The Burne lab
S. mutans SAB110	Δftf, Kanr	The Burne lab
S. milleri KSB8	gtfB of S. mutans GS5, Emr	Vacca-Smith and Bowen, 1998
L. casei 4646	wild-type	Shu et al., 2003
L. casei CB	derivative of 4646, Ermr	Wen et al., 2010
L. fermentum ATCC 14931	wild-type	ATCC#
L. rhamnosus ATCC7469	wild-type	ATCC#
L. salivarius ssp. salivarius ATCC 11741	wild-type	Caufield et al., 2015
L. gasseri ATCC 33323	Wild-type	Caufield et al., 2015
L. gasseri M57-23	mother-caries active*	Caufield et al., 2015
L. fermentum M87-28	mother-caries active*	Caufield et al., 2015
L. salivarius M87-8	mother-caries active*	Caufield et al., 2015
L. rhamnosus M72-26	mother-caries active*	Caufield et al., 2015
V. dispar ATCC17745	wild-type	Shu et al., 2003

Erm^r and Kan^r for erythromycin and kanamycin resistance, respectively.

^#strains purchased directly from American Type Culture Collection, Manassas, VA;

^*Clinical strains previously isolated from mothers of caries active kids.