“…AtUSP (AT3G53990) has been implicated in plant responses to drought (Isokpehi et al, 2011), oxidative stress (Jung et al, 2015), and heat and cold stress (Jung et al, 2015;Melencion et al, 2017). A role in plant defense against pathogens was recently documented, with AtUSP accumulating in plants exposed to Pseudomonas syringae and displaying antimicrobial activity against various fungi (Park et al, 2017). We confirmed the presence of AtUSP in both the cytoplasm and the nucleus (Melencion et al, 2017), consistent with a possible dual function for this protein.…”