Fine mapping and analyses of the RSC15ZH resistance candidate gene for the soybean mosaic virus
文献类型： 外文期刊
作者： Li, Mu 1 ; Liu, Nianxi 1 ; Ma, Qibin 1 ; Lian, Tengxiang 1 ; Cai, Zhandong 1 ; Nian, Hai 1 ;
作者机构： 1.South China Agr Univ, State Key Lab Conservat & Utilizat Subtrop Agrobi, Guangzhou, Peoples R China
2.Jilin Acad Agr Sci, Maize Res Inst, Gongzhuling, Peoples R China
3.South China Agr Univ, Coll Agr, Key Lab Plant Mol Breeding Guangdong Prov, Guangzhou, Peoples R China
4.Jilin Acad Agr Sci, Soybean Res Inst, Changchun, Peoples R China
关键词： Soybean; Soybean mosaic virus; Fine mapping; Resistance gene
期刊名称：EUPHYTICA （ 影响因子：1.895； 五年影响因子：2.181 ）
ISSN： 0014-2336
年卷期： 2020 年 216 卷 3 期
页码：
收录情况： SCI
摘要： The soybean mosaic virus (SMV) is a viral pathogen caused by Potyvirus reported in the major soybean growing areas of the world. SMV strain SC-15 is the most virulent and predominant strain that infects all soybean differentials and is widely distributed throughout southern China. In this study, three elite SMV-resistant soybean varieties that possess better comprehensive traits were identified through a screening test. A mapping population containing 163 F-8 recombinant inbred lines derived from a Zhonghuang24 (resistant) x Huaxia3 (susceptible) cross was used to locate the resistance gene for SMV strain SC-15. A high-density genetic linkage map was developed containing 2639 recombination bins using the restriction site-associated DNA sequencing (RAD-seq) method. Results revealed a novel resistance gene, R(SC15)ZH identified in a 63 kb region of chromosome 13. This locus was further characterized by quantitative real-time PCR (qRT-PCR). Four candidate resistance genes were identified that were possibly involved in regulating SMV resistance, especially Glyma13g24461. These results provide a basic foundation for soybean breeding programs to improve resistance to SMV strain SC-15 and for positional cloning of SMV resistant candidate genes.
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