Gene expression analysis of parent and <i>rprY</i> mutant strains under Na⁺ depleted conditions.

<p>A and C. Venn diagrams showing functional categories and numbers of genes up-(A) or down-regulated (C), respectively, in the absence of Na⁺. B and D. Functional categories and numbers of genes up-(B) or down-regulated (D), respectively, in the absence of Na⁺. Open columns represent the number of genes up-regulated in the parent only, grey columns show the number up-regulated in the mutant only, and black columns the number of up-related genes in common.