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(A) Growth curves of wild-type and ΔpdeI and ΔpdeR mutant strains. (B) Effects of pdeR and pdeI genes on AHL production in P. denitrificans. Wild-type and ΔpdeI and ΔpdeR mutant cells were grown to a high cell density, and the cell-free supernatants were assayed for AHL activity. (C) Number of differentially expressed genes (DEGs) regulated by pdeI and pdeR.
