Table 1.

Strains used in this study.

Strain	Genotype	Characteristic description	Reference
Bacillus subtilis
NCIB3610	wild type	Undomesticated WT strain	Branda et al., 2001
YC161	Pspank-gfp	Produces GFP constantly	Chai et al., 2011
YC164	Peps-gfp	Produces GFP under the control of promoter for eps	Chai et al., 2008
YC189	PtapA-cfp at the amyE locus in 3610, SpecR	Produces CFP under the control of promoter for tapA	Chai et al., 2008, Pasvolsky et al., 2014
	ΔluxS	Mutant in luxS gene Which does not produce AI-2	Chai lab collection
RL3852	ΔepsH in 3610, TetR	Mutant in production of EPS	Kearns et al., 2005
SB505	ΔtasA in 3610, SpecR	Mutant in production of amyloid fibers	A gift of Branda S.
V. harveyi
MM77	ΔluxLM, Tn5, ΔluxS, CmR	Mutant in both systems of quorum sensing (QS) which does not produce AI-1 and AI-2	Surette et al., 1999