To determine the expression levels of major defense-related marker genes in response to bacterial infection in the mutant lines pp2-b13 and aclp1 compared to wild-type Arabidopsis, we examined the five-weeks-old Arabidopsis plants infected with Pst DC3000 hrcC- and investigated the expression levels of the genes including PATHOGENESIS-RELATED GENE1 (PR1; AT2G14610) the SA-inducible gene, VEGETATIVE STORAGE PROTEIN1 (VSP1; AT5G24780) the JA-inducible gene, and PLANT DEFENSIN1. The gene discussed is TMEM37; the disease is bacterial infectious disease.