Table 1. Bacterial strains and plasmids used in this study.

Strains or plasmid			Phenotype of genotype	Source or reference
Strains
	L. casei
		IGM394	Wild-type	our collection
		Δnox	deficient of nox gene	This study
		Δnox5	deficient of nox5 gene	This study
		ΔpoxF	deficient of poxF gene	This study
		ΔcidC	deficient of cidC gene	This study
		ΔahpC	deficient of ahpC gene	This study
		ΔohrR	deficient of ohrR gene	This study
		Δsod	deficient of sod gene	This study
		Δsuf	deficient of suf gene	This study
		Δflp	deficient of flp gene	This study
		ΔdpsB	deficient of dpsB gene	This study
		ΔcydAB	deficient of cydAB gene	This study
		ΔgshR1	deficient of gshR1 gene	This study
		Δipr	deficient of ipr gene	This study
		Δnpr	deficient of npr gene	This study
		Δnox::Δnpr	deficient of nox and npr gene	This study
		Δnox5::Δnpr	deficient of nox5 and npr gene	This study
		Δsod::Δnpr	deficient of sod and npr gene	This study
		ΔgshR1::Δnpr	deficient of gshR1 and npr gene	This study
		ΔgshR2::Δnpr	deficient of gshR2 and npr gene	This study
		Δipr::Δnpr	deficient of ipr and npr gene	This study
		ΔgshR1::ΔgshR2::Δnpr	deficient of gshR1, gshR2 and npr gene	This study
		Δsod::ΔgshR1::ΔgshR2::Δnpr	deficient of sod, gshR1, gshR2 and npr gene	This study
		Δipr::ΔgshR1::ΔgshR2::Δnpr	deficient of ipr, gshR1, gshR2 and npr gene	This study
	E. coli
		DH5a	Commercial strain purchased from Toyobo
Plasmids
	pBTE		E. coli-gram positive bacteria shuttle vector carrying pBT2 ori region, pAMb1 erythromycin resistance gene, multi cloning sites and temperature sensitivity	our collection
	pBTE::Δnox		pBTE carrying deficient fragment of nox	This study
	pBTE::Δnox5		pBTE carrying deficient fragment of nox5	This study
	pBTE::ΔpoxF		pBTE carrying deficient fragment of poxF	This study
	pBTE::ΔcidC		pBTE carrying deficient fragment of cidC	This study
	pBTE::ΔahpC		pBTE carrying deficient fragment of ahpC	This study
	pBTE::ΔohrR		pBTE carrying deficient fragment of ohrR	This study
	pBTE::Δsod		pBTE carrying deficient fragment of sod	This study
	pBTE::Δsuf		pBTE carrying deficient fragment of suf	This study
	pBTE::Δflp		pBTE carrying deficient fragment of flp	This study
	pBTE::ΔdpsB		pBTE carrying deficient fragment of dpsB	This study
	pBTE::ΔcydAB		pBTE carrying deficient fragment of cydAB	This study
	pBTE::ΔgshR1		pBTE carrying deficient fragment of gshR1	This study
	pBTE::ΔgshR2		pBTE carrying deficient fragment of gshR2	This study
	pBTE::Δipr		pBTE carrying deficient fragment of ipr	This study
	pBTE::Δnpr		pBTE carrying deficient fragment of npr	This study