Fine mapping and identification of the soybean R-SC4 resistance candidate gene to soybean mosaic virus
文献类型： 外文期刊
作者： Wang, Dagang 1 ; Ma, Ying 1 ; Liu, Ning 1 ; Yang, Zhonglu 1 ; Zheng, Guijie 1 ; Zhi, Haijian 1 ;
作者机构： 1.Nanjing Agr Univ, Soybean Res Inst, Natl Ctr Soybean Improvement, Natl Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Jiangsu, Peoples R China
2.Anhui Acad Agr Sci, Crop Inst, Anhui Key Lab Crops Qual Improving, Hefei 230031, A
关键词： soybean;soybean mosaic virus;genomic-SSR fine mapping;resistance genes
期刊名称：PLANT BREEDING （ 影响因子：1.832； 五年影响因子：1.956 ）
ISSN： 0179-9541
年卷期： 2011 年 130 卷 6 期
页码：
收录情况： SCI
摘要： Soybean mosaic virus (SMV) disease is one of the most destructive viral diseases for soybeans worldwide. In this study, 1047 F-2 plants derived from 'Dabaima' (resistant) x 'Nannong1138-2' (susceptible) were used to study inheritance and resistance gene linkage to SMV strain SC4. SSR were used to establish genetic maps of the parent plants, in addition to resistant or susceptible F-2 generation plants. Results indicated that a single dominant gene (designated R-SC4) located on chromosome 14 (MLG B2) controls resistance to SC4 infections. In addition, SNP and genomic-SSR markers near R-SC4 were examined. Based on the linkage analysis of the population, the genomic-SSR markers BARCSOYSSR_14_1413 and BAR-CSOYSSR_14_1416 were found flanking R-SC4. Sequence analysis of the soybean genome indicated that the interval between the two genomic-SSR markers was <100 kb on chromosome 14. Quantitative real-time PCR (QRT-PCR) analysis of the 100-kb region identified three genes (Glyma14g38510, 38560 and 38580) likely involved in regulating resistance to SMV. These results are useful for transferring and pyramiding or map-based cloning of R-SC4.
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