Bacterial blight, caused by Xanthomonas oryzae pv. oryzae, is a seriousdisease of rice worldwide. A new dominant gene for bacterial blightresistance in rice, Xa25(t), was identified from Minghui 63, a restorerline for a number of rice hybrids that are widely cultivated in China. Thisgene conferred resistance to Philippine race 9 (PXO339) of X. oryzae pv.centromericregion of chromosome 12, 2.5cM from a disease resistance genehomologoussequence, NBS109, and 7.3cM from a restriction fragmentlength polymorphism marker, G1314. The genomic location of this geneis similar to the previously identified blast resistance genes, Pi-ta andPi-ta2.