Phytopathology. 2002 Jul;92(7):750-4. doi: 10.1094/PHYTO.2002.92.7.750.
ABSTRACT Bacterial blight, caused by Xanthomonas oryzae pv. oryzae, is a serious disease of rice worldwide. A new dominant gene for bacterial blight resistance in rice, Xa25(t), was identified from Minghui 63, a restorer line for a number of rice hybrids that are widely cultivated in China. This gene conferred resistance to Philippine race 9 (PXO339) of X. oryzae pv. oryzae in both seedling and adult stages. It was mapped to the centromeric region of chromosome 12, 2.5 cM from a disease resistance gene-homologous sequence, NBS109, and 7.3 cM from a restriction fragment length polymorphism marker, G1314. The genomic location of this gene is similar to the previously identified blast resistance genes, Pi-ta and Pi-ta2.
摘要 由稻黄单胞菌引起的细菌性条斑病是一种世界性的水稻严重病害。从明恢 63 中鉴定出一个新的抗细菌性条斑病的显性基因 Xa25(t)，明恢 63 是中国广泛种植的多个水稻杂交种的恢复系。该基因赋予了水稻对菲律宾株系 9（PXO339）的抗性，在苗期和成株期均表现出抗性。该基因定位于第 12 号染色体的着丝粒区域，距离抗病基因同源序列 NBS109 2.5cM，距离限制性片段长度多态性标记 G1314 7.3cM。该基因的基因组位置与先前鉴定的稻瘟病抗性基因 Pi-ta 和 Pi-ta2 相似。
