Protein phosphatase that acts on XA21 pathogen recognition receptor. Negatively regulates cell death and XA21-mediated innate immunity. H2O + O-phospho-L-seryl-[protein] = L-seryl-[protein] + phosphate H2O + O-phospho-L-threonyl-[protein] = L-threonyl-[protein] + phosphate Binds 2 magnesium or manganese ions per subunit. Interacts with XA21 (via juxtamembrane and kinase domains). Associated with XA21 receptor kinase. Enhanced resistance to Xantomonas oryzae pv. oryzae (Xoo), expression of defense-related genes and cell death (necrotic lesions). Belongs to the PP2C family.