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Integrating QTL mapping and GWAS to decipher the genetic mechanisms behind the calcium contents of Brassica napus shoots

文献类型： 外文期刊

作者： Xiang, Yanan 1 ; Chen, Feng 2 ; Shi, Rui 2 ; Yang, Tinghai 2 ; Zhang, Wei 2 ; Zhou, Xiaoying 2 ; Wang, Chunyun 2 ; Sun, Chengming 2 ; Fu, Sanxiong 2 ; Wang, Xiaodong 1 ; Zhang, Jiefu 1 ; Shen, Yue 2 ;

作者机构： 1.Jiangsu Univ, Sch Food & Biol Engn, Zhenjiang, Peoples R China

2.Jiangsu Acad Agr Sci, Key Lab Cotton & Rapeseed, Minist Agr & Rural Affairs, Inst Ind Crops, Nanjing, Peoples R China

关键词： Brassica napus shoots; calcium concentration; QTL mapping; GWAS; candidate genes

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：4.8； 五年影响因子：5.7 ）

ISSN： 1664-462X

年卷期： 2025 年 16 卷

页码：

收录情况： SCI

摘要： Brassica napus is an important oil crop worldwide, and its shoots are rich in vitamin C, calcium, and selenium. Functional oilseed-vegetable-dual-purpose varieties can increase the subsidiary value of B. napus. Consumption of high-calcium B. napus shoots can effectively help provide essential elements to the human body. To investigate the genetic mechanisms underlying the calcium concentrations of B. napus shoots, quantitative trait loci (QTL) mapping, using a population of 189 recombinant inbred lines, and a genome-wide association study, using an association panel of 202 diverse accessions, were performed. A total of 12 QTLs controlling calcium content were identified using the recombinant inbred line population in five environments. Among them, qCaC.22GY-A05-1 was considered the major QTL, with a phenotypic variation of 10.10%. In addition, 228 single nucleotide polymorphisms significantly related to calcium content were identified using the genome-wide association study in six environments, and they were distributed on all of the chromosomes, except A10. Finally, 10 candidate genes involved in regulating calcium absorption and transport in B. napus shoots were identified. However, no overlapping intervals were found through a comprehensive analysis of the two datasets. These results provide valuable information for understanding the genetic control of calcium concentration in B. napus shoots.

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