您好，欢迎访问河南省农业科学院 机构知识库！
河南省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

High-resolution genome-wide association study reveals two genes influencing dietary fiber content in sesame (Sesamum indicum L.)

文献类型： 外文期刊

作者： Li, Guiting 1 ; Cao, Hengchun 1 ; Yang, Weifei 1 ; Ju, Ming 1 ; Ma, Qin 1 ; Wang, Cuiying 1 ; Zhang, Zhanyou 1 ; Tian, Qiuzhen 1 ; Chen, Jiayuan 1 ; Yuan, Qingli 1 ; Du, Hua 1 ; Miao, Hongmei 1 ; Zhang, Haiyang 1 ;

作者机构： 1.Henan Acad Agr Sci, Henan Sesame Res Ctr, Zhengzhou 450002, Peoples R China

2.Henan Acad Agr Sci, Henan Sesame Res Ctr, Henan Key Lab Specif Oilseed Crops Genom, Zhengzhou, Peoples R China

期刊名称：CROP SCIENCE （ 影响因子：1.9； 五年影响因子：2.3 ）

ISSN： 0011-183X

年卷期： 2025 年 65 卷 1 期

页码：

收录情况： SCI

摘要： Dietary fiber is widely recognized for its beneficial effects on human health, and sesame (Sesamum indicum L.) seeds are an important source of dietary fiber. However, efforts to improve sesame for higher fiber have been constrained by limited knowledge of the genetic factors underlying this trait. In this study, we identified a strong correlation between fiber and sugar content, both of which are significantly influenced by genetic factors. A large-scale analysis of 222 sesame germplasm resources revealed genome-wide single nucleotide polymorphism (n = 1,535,018), insertions and deletions (InDels; n = 325,371), and structure variations (SVs; n = 29,028). Linkage disequilibrium and genome-wide association studies identified an InDel quantitative trait locus targeting the SiLAC3 gene, which caused a gene frameshift mutation significantly associated with both sugar and dietary fiber traits. Furthermore, a 1201-bp deletion SV in the coding and 3 ' untranslated regions of the SiXTH30 gene was associated with high fiber content. Notably, two accessions (CX150 and CX546) with pyramiding favorable alleles of these two mutated genes exhibited a significant increase in fiber content compared to accessions with only one favorable allele. We also found two candidate genes highly expressed during the early and middle stages of seed development, both of which have been previously reported to play important roles in cell wall fiber content. In conclusion, our findings highlight two key fiber-associated candidate genes, which could serve as valuable resources for molecular breeding aimed at increasing fiber content in sesame seeds.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：河南省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台