Identification of genes governing YMD resistance in soybean cultivar SL 958.

IF 3.3 2区农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Journal of the Science of Food and Agriculture Pub Date : 2024-10-20 DOI:10.1002/jsfa.13973

Kamalpreet Singh Mandahal, Danda Prasad Meghana, Asmita Sirari, Dharminder Bhatia, Karmvir Singh Garcha, Balwinder Singh Gill

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Abstract

Background: Yellow mosaic disease (YMD) is the most devastating disease of soybean under north Indian conditions. A recombinant inbred line population derived from SL 958 (R) × AGS 456 (S) was used to map the genes imparting YMD resistance. Genotyping by sequencing (GBS) of 148 individuals and the parents was used to identify polymorphic SNPs in the population. These were used to generate linkage maps and subsequently map the QTL.

Results: A QTL, MYMIV 1-1.1, was mapped onto chromosome 6. The QTL was mapped at a genetic distance of 114.31 cM, with likelihood ratio of 81.34 (LOD 17.68), explaining 33.80% of the variation for the trait, with an additive effect of 1.22. MYMIV 1-1.1 was flanked by SNPs Gm06_12614920 explaining 33.80% of variation and Gm06_12887789 explaining 31.04% of the variation. The QTL region spanned for a total of 2.798 Mbp.

Conclusion: The QTL was mapped in an approximately 4 cM region. Flanking SNPs can be developed into linked markers for effective marker-assisted selection. Out of the genes in the QTL region, Glyma.06G161700 (Suppressor of Gene Silencing/SGS3) is the strongest contender for the resistance gene. This is the first study documenting GBS-based mapping of YMD resistance in soybean. © 2024 Society of Chemical Industry.

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背景：黄镶嵌病（YMD）是北印度条件下对大豆最具破坏性的病害。研究人员利用 SL 958 (R) × AGS 456 (S) 的重组近交系群体来绘制 YMD 抗性基因图谱。通过对 148 个个体和亲本进行基因分型测序（GBS），确定了群体中的多态性 SNP。这些SNP被用于生成连接图，并随后绘制QTL图：结果：一个名为 MYMIV 1-1.1 的 QTL 被绘制到了 6 号染色体上。该 QTL 的遗传距离为 114.31 cM，似然比为 81.34（LOD 17.68），解释了 33.80% 的性状变异，加性效应为 1.22。MYMIV 1-1.1 两侧的 SNP Gm06_12614920 解释了 33.80% 的变异，Gm06_12887789 解释了 31.04% 的变异。该 QTL 区域的总跨度为 2.798 Mbp：结论：该 QTL 映射在约 4 cM 的区域内。侧翼 SNP 可开发成链接标记，用于有效的标记辅助选择。在 QTL 区域的基因中，Glyma.06G161700（基因沉默抑制因子/SGS3）是抗性基因最有力的竞争者。这是第一项基于 GBS 的大豆 YMD 抗性图谱研究。© 2024 化学工业协会。

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来源期刊

Journal of the Science of Food and Agriculture 工程技术-农业综合

CiteScore

8.10

自引率

4.90%

发文量

634

审稿时长

3.1 months

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