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. 2020 Jun 3;11:1078. doi: 10.3389/fmicb.2020.01078

FIGURE 2.

FIGURE 2

Survival of sdiA-deficient and overexpression strains after acid shock. (A,B) E. coli SM10λpir and E. coli BW25113 wild-type strain, sdiA-deficiency strain (E. coli SM10λpirΔsdiA, E. coli BW25113ΔsdiA), sdiA-deficiency and overexpression strain (E. coli SM10λpirΔsdiA-SdiA, E. coli BW25113ΔsdiA-SdiA) (2.0 × 105) were incubated for 2 h in LBG medium acidified by citric acid. The images represent 1:104 (pH 4) or 1:103 (pH 3) of the serial dilutions of the cultures in 10-fold steps. *P < 0.05; **P < 0.01.