QTL mapping of major fatty acids and identification of candidate genes in cottonseed in an introgression line population from Gossypium hirsutum x Gossypium barbadense

文献类型： 外文期刊

第一作者： Feng, Pan

作者： Feng, Pan;Wu, Man;Yu, Jiwen;Feng, Pan;Jia, Bing;Song, Jikun;Mao, Haoming;Ma, Jianjiang;Pei, Wenfeng;Zhang, Bingbing;Wang, Li;Dang, Yuanyue;Hu, Shiyin;Wang, Wenkui;Wu, Man;Yu, Jiwen;Zhang, Jinfa;Feng, Pan;Yu, Jiwen

作者机构：

关键词： Gossypium hirsutum; Gossypium barbadense; Backcross inbred lines; Fatty acid; Quantitative trait locus; Candidate genes

期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：6.2； 五年影响因子：6.2 ）

ISSN： 0926-6690

年卷期： 2024 年 222 卷

页码：

收录情况： SCI

摘要： Cottonseed as a by-product of cotton production is an important source of oil and proteins. In this study, the genetic basis of cottonseed fatty acid composition traits was studied through quantitative trait locus (QTL) mapping in an interspecific backcross inbred line (BIL) population of 250 lines grown. Based on 7709 single nucleotide polymorphic (SNP) markers, 117 QTLs were identified for the contents of all major fatty acids. Nine stable QTLs were detected in at least three environments, within which six genes were identified as candidate genes. Introduction of Gh_D06G0548, , Gh_D06G0571, , and Gh_D06G0763 into transformed yeasts led to significant increases in fatty acid contents, especially palmitoleic acid. These findings not only shed more light on the molecular regulations of fatty acid biosynthesis and oil accumulation in cottonseed, but also provide a list of candidate genes for enhancing cottonseed oil content and improving fatty acid composition and its nutritional value.

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