srt2 mutants show improved resistance to Pst DC3000 and led to increased expression of several loci involved in the SA-defense pathway, including PR1, PAD4, EDS5 and SID2. On the contrary, the overexpressor line is deficient for the induction of PR1 after pathogen infection, and presents higher bacteria proliferation than the wild type (Wang et al., 2010). Here, PADI4 is linked to infection.