A genome-wide association study reveals a rich genetic architecture of flour color-related traits in bread wheat

dc.creatorShengnan Zhai
dc.creatorJindong Liu
dc.creatorDengan Xu
dc.creatorWeie Wen
dc.creatorYan Jun
dc.creatorPingzhi Zhang
dc.creatorYingxiu Wan
dc.creatorShuanghe Cao
dc.creatorYuanfeng Hao
dc.creatorXianchun Xia
dc.creatorWujun Ma
dc.creatorHe Zhonghu
dc.date2019-01-25T01:20:18Z
dc.date2019-01-25T01:20:18Z
dc.date2018
dc.date.accessioned2023-07-17T20:03:36Z
dc.date.available2023-07-17T20:03:36Z
dc.identifierESSN: 1664-462X
dc.identifierhttps://hdl.handle.net/10883/19895
dc.identifier10.3389/fpls.2018.01136
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7511737
dc.descriptionFlour color-related traits, including brightness (L∗), redness (a∗), yellowness (b∗) and yellow pigment content (YPC), are very important for end-use quality of wheat. Uncovering the genetic architecture of these traits is necessary for improving wheat quality by marker-assisted selection (MAS). In the present study, a genome-wide association study (GWAS) was performed on a collection of 166 bread wheat cultivars to better understand the genetic architecture of flour color-related traits using the wheat 90 and 660 K SNP arrays, and 10 allele-specific markers for known genes influencing these traits. Fifteen, 28, 25, and 32 marker–trait associations (MTAs) for L∗ , a∗ , b∗ , and YPC, respectively, were detected, explaining 6.5–20.9% phenotypic variation. Seventy-eight loci were consistent across all four environments. Compared with previous studies, Psy-A1, Psy-B1, Pinb-D1, and the 1B•1R translocation controlling flour color-related traits were confirmed, and four loci were novel. Two and 11 loci explained much more phenotypic variation of a∗ and YPC than phytoene synthase 1 gene (Psy1), respectively. Sixteen candidate genes were predicted based on biochemical information and bioinformatics analyses, mainly related to carotenoid biosynthesis and degradation, terpenoid backbone biosynthesis and glycolysis/gluconeogenesis. The results largely enrich our knowledge of the genetic basis of flour color-related traits in bread wheat and provide valuable markers for wheat quality improvement. The study also indicated that GWAS was a powerful strategy for dissecting flour color-related traits and identifying candidate genes based on diverse genotypes and high-throughput SNP arrays.
dc.formatPDF
dc.languageEnglish
dc.publisherFrontiers
dc.relationhttps://figshare.com/articles/Image_1_A_Genome-Wide_Association_Study_Reveals_a_Rich_Genetic_Architecture_of_Flour_Color-Related_Traits_in_Bread_Wheat_PDF/6921623
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dc.relationhttps://figshare.com/articles/Table_1_A_Genome-Wide_Association_Study_Reveals_a_Rich_Genetic_Architecture_of_Flour_Color-Related_Traits_in_Bread_Wheat_DOCX/6921644
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dc.relationhttps://figshare.com/articles/Table_4_A_Genome-Wide_Association_Study_Reveals_a_Rich_Genetic_Architecture_of_Flour_Color-Related_Traits_in_Bread_Wheat_docx/6921653
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dc.rightsOpen Access
dc.sourceart. 1136
dc.source9
dc.sourceFrontiers in Plant Science
dc.subjectAGRICULTURAL SCIENCES AND BIOTECHNOLOGY
dc.subjectSOFT WHEAT
dc.subjectGENETICS
dc.subjectFLOURS
dc.subjectGENE EXPRESSION
dc.subjectPIGMENTATION
dc.titleA genome-wide association study reveals a rich genetic architecture of flour color-related traits in bread wheat
dc.typeArticle
dc.coverageSwitzerland


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