Identification of genes for seed isoflavones based on bulk segregant analysis sequencing in soybean natural population
文献类型: 外文期刊
第一作者: Azam, Muhammad
作者: Azam, Muhammad;Zhang, Shengrui;Huai, Yuanyuan;Abdelghany, Ahmed M.;Shaibu, Abdulwahab S.;Qi, Jie;Feng, Yue;Liu, Yitian;Li, Jing;Qiu, Lijuan;Li, Bin;Sun, Junming;Abdelghany, Ahmed M.;Shaibu, Abdulwahab S.
作者机构:
期刊名称:THEORETICAL AND APPLIED GENETICS ( 影响因子:5.4; 五年影响因子:5.7 )
ISSN: 0040-5752
年卷期: 2023 年 136 卷 1 期
页码:
收录情况: SCI
摘要: Key messageWe identified four hub genes for isoflavone biosynthesis based on BSA-seq and WGCNA methods and validated that GmIE3-1 positively contribute to isoflavone accumulation in soybean.Soybean isoflavones are secondary metabolites of great interest owing to their beneficial impact on human health. Herein, we profiled the seed isoflavone content by HPLC in 1551 soybean accessions grown in two locations for two years and constructed two extreme pools with high (4065.1 mu g g(-1)) and low (1427.23 mu g g(-1)) isoflavone contents to identify candidate genes involved in isoflavone biosynthesis pathways using bulk segregant analysis sequencing (BSA-seq) approach. The results showed that the average sequencing depths were 50.3x and 65.7x in high and low pools, respectively. A total of 23,626 polymorphic SNPs and 5299 InDels were detected between both pools and 1492 genes with different variations were identified. Based on differential genes in BSA-seq and weighted gene co-expression network analysis (WGCNA), four hub genes, Glyma.06G290400 (designated as GmIE3-1), Glyma.01G239200, Glyma.01G241500, Glyma.13G256100 were identified, encoding E3 ubiquitin-protein ligase, arm repeat protein interacting with ABF2, zinc metallopeptidase EGY3, and dynamin-related protein 3A, respectively. The allelic variation in GmIE3-1 showed a significant influence on isoflavone accumulation. The virus-induced gene silencing (VIGS) and RNAi hairy root transformation of GmIE3-1 revealed partial suppression of this gene could cause a significant decrease (P < 0.0001) of total isoflavone content, suggesting GmIE3-1 is a positive regulator for isoflavones. The present study demonstrated that the BSA-seq approach combined with WGCNA, VIGS and hairy root transformation can efficiently identify isoflavone candidate genes in soybean natural population.
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