Dissection of the genetic architecture of rice resistance to Xanthomonas oryzae pv. oryzae using a genomewide association study
Dissection of the genetic architecture of rice resistance to Xanthomonas oryzae pv. oryzae using a genomewide association study
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水稻抗黄单胞菌 pv 的遗传结构剖析。
DOI：
10.1111/jph.12705
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发表时间：
2018-08-01
影响因子：
1.5
通讯作者：
Liu, Yong
中科院分区：
文献类型：
--
作者：
Li, Chenggang;Su, Pin;Liu, Yong
细菌性枯萎病，由黄单胞菌属细菌致病型引起。在许多国家，Xoo是造成水稻产量严重损失的病原菌。水稻育种家已经利用抗病基因来控制病害，但许多抗病品种在释放后几年就变得易感。鉴定新的抗白叶枯病基因是水稻育种的主要目标之一。在这项研究中，我们使用了全基因组关联研究（GWAS），以分析对Xoo小种C1使用水稻多样性小组1（RDP1）的电阻。RDP1群体对C1的疾病评估表明，AUS亚组比其他亚组赋予更高水平的C1抗性。全基因组关联分析共检测到15个QTL，分布在第1、2、3、4、5、6、8、9、10和12染色体上。其中一些位于未知抗性位点或QTL的区域。本研究证明了GWAS在水稻抗白叶枯病遗传分析中的有效性，并为水稻抗白叶枯病育种提供了许多与白叶枯病相关的SNP标记。
Bacterial blight, caused by Xanthomonas oryzae pv. oryzae (Xoo), usually causes serious rice yield loss in many countries. Rice breeders have used resistance (R) genes to control the disease but many of the resistant cultivars become susceptible few years after releasing. Identification of new R genes to Xoo is one of the main objectives in rice breeding programs. In this study, we used a genomewide association study (GWAS) to analyse the resistance against the Xoo race C1 using the Rice Diversity Panel 1 (RDP1). Disease evaluation of the RDP1 population to C1 indicated that the AUS subgroup conferred a higher level of resistance to C1 than other subgroups. Genomewide association mapping identified 15 QTLs that are distributed on chromosomes 1, 2, 3, 4, 5, 6, 8, 9, 10 and 12. Some of them are located in the regions without known resistance loci or QTLs. This study demonstrated the effectiveness of GWAS on the genetic dissection of rice resistance to Xoo and provided many Xoo resistance-associated SNP markers for rice breeding.