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  • Title: Genome-wide association study and protein network analysis for understanding candidate genes involved in root development at the rapeseed seedling stage.
    Author: He Y, Hu D, You J, Wu D, Cui Y, Dong H, Li J, Qian W.
    Journal: Plant Physiol Biochem; 2019 Apr; 137():42-52. PubMed ID: 30738216.
    Abstract:
    Root system is essential for plants to absorb water and nutrients. The root related traits are complex quantitative traits and regulated by genetic control. Here, we used two association mapping panels to perform a genome-wide association study (GWAS) on seven root related traits in Brassica napus at the seedling stage and obtained 27 SNP loci significantly associated with the phenotypes. We further conducted a genome-wide LD block analysis of the candidate peak regions and obtained 295 candidate genes with high association peaks across seven phenotypes in LD region. In addition, a protein interaction network using the candidate genes identified here was constructed, and 113 genes were associated. Seven genes, BnaA03g47330D, BnaC09g16810D, BnaA06g22840D, BnaA03g28390D, BnaA08g19920D, BnaA03g28930D and BnaA03g11440D were in a large cluster, and may play important roles in interacting with other related genes. Our data may provide resources for molecular breeding and functional analysis of root growth and development in rapeseed.
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