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Genome-Wide Association Study Reveals Genomic Regions Associated With Molybdenum Accumulation in Wheat Grains

文献类型： 外文期刊

作者： Jin, Xiaojie 1 ; Zou, Zhaojun 3 ; Wu, Zhengqing 2 ; Liu, Congcong 2 ; Yan, Songxian 4 ; Peng, Yanchun 1 ; Lei, Zhensheng 2 ; Zhou, Zhengfu 2 ;

作者机构： 1.Hubei Acad Agr Sci, Inst Food Crops, Hubei Key Lab Food Crop Germplasm & Genet Improvem, Wuhan, Peoples R China

2.Henan Acad Agr Sci, Henan Inst Crop Mol Breeding, Zhengzhou, Peoples R China

3.Huazhong Agr Univ, Coll Plant Sci & Technol, Wuhan, Peoples R China

4.Moutai Inst, Dept Resources & Environm, Renhuai, Peoples R China

关键词： common wheat; molybdenum; GWAS; SNP; candidate genes

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）

ISSN： 1664-462X

年卷期： 2022 年 13 卷

页码：

收录情况： SCI

摘要： Molybdenum (Mo) is an essential micronutrient for almost all organisms. Wheat, a major staple crop worldwide, is one of the main dietary sources of Mo. However, the genetic basis for the variation of Mo content in wheat grains remains largely unknown. Here, a genome-wide association study (GWAS) was performed on the Mo concentration in the grains of 207 wheat accessions to dissect the genetic basis of Mo accumulation in wheat grains. As a result, 77 SNPs were found to be significantly associated with Mo concentration in wheat grains, among which 52 were detected in at least two sets of data and distributed on chromosome 2A, 7B, and 7D. Moreover, 48 out of the 52 common SNPs were distributed in the 726,761,412-728,132,521 bp genomic region of chromosome 2A. Three putative candidate genes, including molybdate transporter 1;2 (TraesCS2A02G496200), molybdate transporter 1;1 (TraesCS2A02G496700), and molybdopterin biosynthesis protein CNX1 (TraesCS2A02G497200), were identified in this region. These findings provide new insights into the genetic basis for Mo accumulation in wheat grains and important information for further functional characterization and breeding to improve wheat grain quality.

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