(A) Spot titer assay using B. subtilis strains WT (PY79), ΔddcP ΔctpA ΔddcA (PEB639), ΔyneA::loxP (PEB439), ΔddcP ΔctpA ΔddcA ΔyneA::loxP (PEB643), ΔddcP ΔctpA ΔddcA amyE::Phy-yneA (PEB844), ΔyneA::loxP amyE::Phy-yneA (EAM46) and ΔddcP ΔctpA ΔddcA ΔyneA::loxP amyE::Phy-yneA (EAM56) spotted on the indicated media. (B) Spot titer assay using B. subtilis strains WT (PY79), ΔddcP ΔctpA ΔddcA (PEB639), ΔyneA::loxP (PEB439), ΔddcP ΔctpA ΔddcA ΔyneA::loxP (PEB643), ΔddcP ΔctpA ΔddcA amyE::Phy-yneA (PEB844), ΔyneA::loxP amyE::Phy-yneA (EAM46) and ΔddcP ΔctpA ΔddcA ΔyneA::loxP amyE::Phy-yneA (EAM56) spotted on the indicated media.