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Positive regulation of TonB‐dependent transporter (TBDT) genes by DksA and (p)ppGpp. (A) Heatmap representing the gene expression profile of TBDT genes. (B) The organization of the sux locus and the gene expression changes in the ΔdksA and ΔspoTΔrelA strains compared to wild‐type Xanthomonas citri subsp. citri.
