JA (100 nM) treatment resulted in enhancement in SOD activity (43.0%), POD (48.6%), CAT (52.5%), APOX (29.5%), DHAR (51.8%), GR (70.3%), and PPO (43.8%) in infected seedlings in contrast to nematode infection alone (Table 2 and Table 3). The gene discussed is PPOX; the disease is Nematoda infectious disease.