PRTN3 and infection: In comparison to mock plants, the VIGS plant (pTRV-MebZIP3 and pTRV-MebZIP5) leaves showed more bacterial number (Figure 5B), lower transcripts of defense-related genes (PR1, PR2, PR3, and PR4) (Figure 6), less callose depositions and lower levels of H2O2 in plant leaves upon Xam infection (Figures 7A,B).