Phylogenetic tree analysis based on the alignment of the deduced amino acid sequence of IL5211S RGAs with known R genes. The tree was constructed using the neighbor-joining method provided in MEGA 4.0 software. The 28 RGA sequences were grouped into four subgroups: I and IV. I to III fall under the TIR-NBS-LRR-type RGA, whereas IV belonged to the non-TIR-NBS-LRR-type RGA. Bootstrap values (1,000 replicates) are given below the branches. The known R genes with the NBS domain used in this study were N (U15605), L6 (U27081), M (U73916), Prf (U65391), Gpa2 (AF195939), and RPM1 (X87851).