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首页> 外文期刊>Plant Cell Reports >Genome-Wide Association Studies (GWAS) for Yield and Weevil Resistance in Sweet potato (Ipomoea batatas (L.) Lam)
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Genome-Wide Association Studies (GWAS) for Yield and Weevil Resistance in Sweet potato (Ipomoea batatas (L.) Lam)

机译：甘薯（IPOMOEA Batatas（L.）LAM）的基因组 - 宽协会研究（GWAS）用于产量和象鼻抗抗性

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Key message We apply the GWAS to sweet potato genome, and identified the SNPs associated with yield and weevil resistance. The sweet potato (Ipomoea batatas (L.) Lam) is a highly heterozygous, outcrossing, polyploid species, which presents challenges for genetic analysis. Therefore, we considered that genome-wide association studies (GWAS) may be applied to the study of the sweet potato genome. The yield of two sweet potato varieties [Purple Sweet Lord (PSL) and 90IDN-47] was assessed at two locations (Kumamoto and Okinawa prefectures) in Japan in 2013 and the yield scores were used for GWAS. The results showed that there were several single nucleotide polymorphisms (SNP) above the significance thresholds in PSL; two peaks were detected in Kumamoto and Okinawa on the Ib03-3 and Ib01-4 linkage groups of PSL, respectively. As for 90IDN-47, one relatively high peak was detected in Kumamoto on the Ib13-8 linkage group. Interestingly, although high peaks above significance thresholds were detected in Kumamoto and Okinawa in PSL, the peaks were located in different linkage groups. This result suggests that the genetic regions controlling yield may change in response to environmental conditions. Additionally, we investigated the degree of weevil damage to the plants, which is the greatest problem in sweet potato cultivation in Okinawa. In this experiment, no SNPs were identified above the significance thresholds. However, one relatively high peak was found in the 90IDN-47 genotype, which showed resistance to weevils. On the other hand, one relatively high peak was also detected in the PSL genotype, which showed susceptibility to weevils. These results suggest that two regions could affect weevil resistance and may contain the gene(s) controlling weevil resistance.
机译：关键消息我们将GWA应用于红薯基因组，并确定了与产量和象鼻硅抗性相关的SNP。甘薯（IPOMOEA Batatas（L.）林）是一种高度杂合，令人满意的多倍体物种，其呈现出遗传分析的挑战。因此，我们认为基因组关联研究（GWAs）可以应用于甘薯基因组的研究。 2013年日本的两个地点（熊本和冲绳县）评估了两种甘薯品种[紫色甜（PSL）和90idn-47]的产量，并将产量分数用于GWAS。结果表明，在PSL中有几种单一核苷酸多态性（SNP）以上的意义阈值;分别在熊本核和冲绳上检测到两种峰值，分别在PSL的IB03-3和IB01-4联动组中检测到kumamoto和冲绳。对于90idn-47，在熊本联动基团上检测一个相对高峰的峰值。有趣的是，尽管在PSL中在熊本和冲绳检测到高于显着性阈值的高峰，但是峰位于不同的连杆基团中。该结果表明，控制产量的遗传区域可能响应环境条件而变化。此外，我们还调查了植物的象鼻虫损伤的程度，这是冲绳的甘薯种植中最大的问题。在该实验中，在显着性阈值之上没有发现SNP。然而，在90idn-47基因型中发现了一个相对高的峰，其显示对象鼻虫的抗性。另一方面，在PSL基因型中也检测到一个相对高的峰，这表现出对象鼻虫的易感性。这些结果表明，两个区域可能影响象鼻虫抗性，并且可能含有控制象鼻虫抗性的基因。

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