Identification of Genomic Regions Associated with Powdery Mildew Resistance in Watermelon through Genome-Wide Association Study

被引:0
作者
Lee, Oak-Jin [1 ,2 ]
Han, Koeun [1 ]
Lee, Hye-Eun [1 ]
Jeong, Hyo-Bong [1 ]
Yu, Nari [1 ]
Chae, Wonbyoung [2 ]
机构
[1] Natl Inst Hort & Herbal Sci, Rural Dev Adm, Vegetable Res Div, Wanju 55365, South Korea
[2] Dankook Univ, Dept Environm Hort, Cheonan 31116, South Korea
来源
PLANTS-BASEL | 2024年 / 13卷 / 19期
关键词
watermelon; powdery mildew; genome-wide association study; germplasm collection; homozygous inbred line; RACE; 1W; QTL;
D O I
10.3390/plants13192708
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Watermelon (Citrullus spp.) is an economically important crop globally, but it is susceptible to various diseases, including powdery mildew. Previous studies have identified genetic factors associated with powdery mildew resistance. However, further research using diverse genetic approaches is necessary to elucidate the underlying genetic mechanisms of this resistance. In this study, the germplasm collection comprising highly homozygous inbred lines was employed, which enabled the accumulation of consistent data and improved the reliability of the genome-wide association study (GWAS) findings. Our investigation identified two significant single-nucleotide polymorphisms (SNPs), pm2.1 and pm3.1, which were strongly associated with disease resistance. Moreover, several candidate genes were revealed within the linkage disequilibrium (LD) blocks surrounding the significant SNPs. In conclusion, the identification of significant SNPs and their additive effects, combined with the discovery of relevant candidate genes, expanded our understanding of the genetic basis of disease resistance and can pave the way for the development of more resilient watermelon cultivars through marker-assisted selection.
引用
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页数:17
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