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. 2020 May 19;86(11):e00268-20. doi: 10.1128/AEM.00268-20

FIG 1.

FIG 1

The A. caldus fur gene is involved in acid resistance. (A and B) Analyses of the growth curves of the A. caldus wild type (WT) and Δfur strains grown in the Starkey-S0 medium. (A) Strains were grown under normal conditions. (B) After 2 days of cultivation in Starkey-S0 medium, sulfuric acid (1:1) was added to adjust the pH to 0.5. (C and D) The levels of fur expression in A. caldus (WT and Δfur) before and after acid shock were detected by luciferase activity. Error bars show standard deviations.