Metabolite-based genome-wide association study enables dissection of the flavonoid decoration pathway of wheat kernels
文献类型： 外文期刊
作者： Chen, Jie 1 ; Hu, Xin 1 ; Shi, Taotao 1 ; Yin, Huanran 1 ; Sun, Dongfa 3 ; Hao, Yuanfeng 4 ; Xia, Xianchun 4 ; Luo, Jie 1 ;
作者机构： 1.Huazhong Agr Univ, Natl Key Lab Crop Genet Improvement, Wuhan, Peoples R China
2.Huazhong Agr Univ, Natl Ctr Plant Gene Res Wuhan, Wuhan, Peoples R China
3.Huazhong Agr Univ, Coll Plant Sci & Technol, Wuhan, Peoples R China
4.Chinese Acad Agr Sci, Natl Wheat Improvement Ctr, Inst Crop Sci, Beijing, Peoples R China
5.Max Planck Inst Mol Plant Physiol, Potsdam, Germany
关键词： flavonoid decoration; metabolite-based genome-wide association study (mGWAS); metabolomics-associated breeding; pathway elucidation; wheat kernels
期刊名称：PLANT BIOTECHNOLOGY JOURNAL （ 影响因子：9.803； 五年影响因子：9.555 ）
ISSN： 1467-7644
年卷期：
页码：
收录情况： SCI
摘要： The marriage of metabolomic approaches with genetic design has proven a powerful tool in dissecting diversity in the metabolome and has additionally enhanced our understanding of complex traits. That said, such studies have rarely been carried out in wheat. In this study, we detected 805 metabolites from wheat kernels and profiled their relative contents among 182 wheat accessions, conducting a metabolite-based genome-wide association study (mGWAS) utilizing 14 646 previously described polymorphic SNP markers. A total of 1098 mGWAS associations were detected with large effects, within which 26 candidate genes were tentatively designated for 42 loci. Enzymatic assay of two candidates indicated they could catalyse glucosylation and subsequent malonylation of various flavonoids and thereby the major flavonoid decoration pathway of wheat kernel was dissected. Moreover, numerous high-confidence genes associated with metabolite contents have been provided, as well as more subdivided metabolite networks which are yet to be explored within our data. These combined efforts presented the first step towards realizing metabolomics-associated breeding of wheat.
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