RPS2 and infection: We used mCherry-tagged bacteria and observed that inoculation with either Pst DC3000 EV (virulent) or Pst DC3000 AvrRpt2 or Pst DC3000 AvrRps4 (activating the CNL RPS2 or the TNL RPS4, respectively) induced a pattern of PR1 expression at the border of the infection site (SI Appendix, Fig. S5).