Identification of rice blast resistance genes in the elite hybrid rice restorer line Yahui2115

文献类型： 外文期刊

第一作者： Li, Deqiang

作者： Li, Deqiang;Li, Xiaoyan;Luo, Yiwan;Zhang, Qin;Huang, Fu;Shi, Jun;Shi, Jun;Li, Yan;Guo, Xiaoyi;Lu, Yuangen;Xu, Yongju;Fan, Jing;Wang, Wenming;Shi, Jun;Li, Deqiang;Li, Yan;Li, Xiaoyan;Guo, Xiaoyi;Luo, Yiwan;Lu, Yuangen;Zhang, Qin;Xu, Yongju;Fan, Jing;Huang, Fu;Wang, Wenming;Guo, Xiaoyi

作者机构：

关键词： blast resistance;hybrid rice;monogenic line;restorer line

期刊名称：GENOME （ 影响因子：2.166； 五年影响因子：2.474 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Rice blast, caused by the ascomycete fungus Magnaporthe oryzae, is one of the most serious rice diseases worldwide. We previously developed an elite hybrid rice restorer line with high resistance to rice blast, Yahui2115 (YH2115). To identify the blast resistance genes in YH2115, we first performed expression profiling on previously reported blast resistance genes and disease assay on monogenic lines, and we found that Pi2, Pi9, and Pikm were the most likely resistance candidates in YH2115. Furthermore, RNA interference and linkage analysis demonstrated that silencing of Pi2 reduced the blast resistance of YH2115 and a Pi2 linkage marker was closely associated with blast resistance in an F-2 population generated from YH2115. These data suggest that the broad-spectrum blast resistance gene Pi2 contributes greatly to the blast resistance of YH2115. Thus, YH2115 could be used as a new germplasm to facilitate rice blast resistance breeding in hybrid rice breeding programs.

分类号： Q3`R394

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