Narcotic mechanisms of acute toxicity of chlorinated anilines in Folsomia candida (Collembola) revealed by gene expression analysis

► The transcriptional response of biotransformation-related genes in Folsomia candida to chloroanilines is associated with logKow. ► However, 2,3,5,6-tetrachloroaniline acted as an uncoupler of electron transport systems. ► Aniline and 2,3,4-trichloroaniline induced ROS defense genes. ► The distinction between class I and II type of narcotizing compounds was not confirmed at the molecular/transcriptomic level.