Expression of receptor-, transporter-, and transmembrane channel-coding genes. (A) Schematic overview of differentially expressed genes coding for proteins involved in signal transduction in adult and larval trachea. Receptors, channels, and transporters labeled in red represent the upregulation of the corresponding DEGs in adult tracheal cells, whereas blue-labeled ones represent upregulation in the larval system. (B) Scheme of components involved in the melanization process of larval and adult tracheal cells. Shown are all components of the melanization response in Drosophila and genes coding for corresponding components that were significantly upregulated either in larval (blue) or adult (red) trachea. Based on DEG with an FDR cutoff value of p < 0.05. DEG with a fold change >100 are emphasized in bold.