The phytopathogen Xanthomonas campestris senses and effluxes salicylic acid via a sensor HepR and an RND family efflux pump to promote virulence in host plants. - Song, Kai; Li, Ruifang; Cui, Ying; Chen, Bo; Zhou, Lian; Han, Wenying; Jiang, Bo‐Le; He, Ya‐Wen (mLife, 2024)