Fine mapping of a Phytophthora-resistance locus RpsGZ in soybean using genotyping-by-sequencing
文献类型： 外文期刊
作者： Jiang, Bingzhi 1 ; Cheng, Yanbo 1 ; Cai, Zhandong 1 ; Li, Mu 1 ; Jiang, Ze 1 ; Ma, Ruirui 1 ; Yuan, Yeshan 1 ; Xia, Qiuju 4 ;
作者机构： 1.South China Agr Univ, State Key Lab Conservat & Utilizat Subtrop Agrobi, Guangzhou 510642, Guangdong, Peoples R China
2.South China Agr Univ, Coll Agr, Key Lab Plant Mol Breeding Guangdong Prov, Guangzhou 510642, Guangdong, Peoples R China
3.Guangdong Acad Agr Sci, Crops Res Inst, Guangdong Prov Key Lab Crops Genet & Improvement, Guangzhou 510640, Peoples R China
4.Univ Chinese Acad Sci, BGI, Educ Ctr, Shenzhen 518083, Peoples R China
关键词： Soybean; Phytophthora root rot; Resistance locus; SNP; Fine mapping
期刊名称：BMC GENOMICS （ 影响因子：3.969； 五年影响因子：4.478 ）
ISSN： 1471-2164
年卷期： 2020 年 21 卷 1 期
页码：
收录情况： SCI
摘要： Background Phytophthora root rot (PRR) caused by Phytophthora sojae (P. sojae) is one of the most serious limitations to soybean production worldwide. The identification of resistance gene(s) and their incorporation into elite varieties is an effective approach for breeding to prevent soybean from being harmed by this disease. A valuable mapping population of 228 F-8:11 recombinant inbred lines (RILs) derived from a cross of the resistant cultivar Guizao1 and the susceptible cultivar BRSMG68 and a high-density genetic linkage map with an average distance of 0.81 centimorgans (cM) between adjacent bin markers in this population were used to map and explore candidate gene(s). Results PRR resistance in Guizao1 was found to be controlled by a single Mendelian locus and was finely mapped to a 367.371-kb genomic region on chromosome 3 harbouring 19 genes, including 7 disease resistance (R)-like genes, in the reference Willliams 82 genome. Quantitative real-time PCR assays of possible candidate genes revealed that Glyma.03 g05300 was likely involved in PRR resistance. Conclusions These findings from the fine mapping of a novel Rps locus will serve as a basis for the cloning and transfer of resistance genes in soybean and the breeding of P. sojae-resistant soybean cultivars through marker-assisted selection.
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