Accumulation of the subtilases were found after infection with the pathogens in tomato, grapevine and cotton (Vera et al., 1989; Monteiro et al., 2013; Duan et al., 2016), and further some substrates were identified such as systemin and the leucine-rich repeat (LRP), initiated defense signaling pathway and activated the expression of defense-related genes (Bergey et al., 1996; Tornero et al., 1996; Ryan, 2000). This evidence concerns the gene PCSK5 and infection.