NRKe and 9RKe caused the plants to form lesion mimics when overexpressed. WT, wild-type Mudanjiang 8. (a) Comparison of deduced amino sequences encoded by 9RKe and NRKe. Dark arrows show the polymorphic residues. Numbers indicate the polymorphic sites. LRR, leucine-rich repeat. (b) T0 transgenic plants (NRKe-oe and 9RKe-oe) overexpressing NRKe or 9RKe developed brown lesion mimics (white arrows) in different tissues. (c) The leaf lesions of the T0 NRKe-oe or 9RKe-oe plants were associated with cell death and accumulation of H2O2 and superoxides. (d) Formation of lesion mimics on the leaves cosegregated with the existence of NRKe in two independent T1 families.