Genetic linkage analysis of stable QTLs in Gossypium hirsutum RIL population revealed function of GhCesA4 in fiber development
文献类型： 外文期刊
第一作者： Liu, Ruixian
作者： Liu, Ruixian;Xiao, Xianghui;Gong, Jw;Li, Junwen;Yan, Haoliang;Ge, Qun;Pan, Jingtao;Shang, Haihong;Shi, Yuzhen;Yuan, Youlu;Gong, Wankui;Liu, Ruixian;Xiao, Xianghui;Chen, Quanjia;Yuan, Youlu;Xiao, Xianghui;Lu, Quanwei;Li, Pengtao;Gong, Jw;Li, Junwen;Ge, Qun;Shang, Haihong;Yuan, Youlu
作者机构：
关键词： Gossypium hirsutum; High-density genetic map (HDGM); Fiber quality and yield trait; Quantitative trait loci (QTLs); GhCesA4
期刊名称：JOURNAL OF ADVANCED RESEARCH （ 影响因子：13.0； 五年影响因子：11.6 ）
ISSN： 2090-1232
年卷期： 2024 年 65 卷
页码：
收录情况： SCI
摘要： Introduction: Upland cotton is an important allotetrapolyploid crop providing natural fibers for textile industry. Under the present high-level breeding and production conditions, further simultaneous improvement of fiber quality and yield is facing unprecedented challenges due to their complex negative correlations. Objectives: The study was to adequately identify quantitative trait loci (QTLs) and dissect how they orchestrate the formation of fiber quality and yield. Methods: A high-density genetic map (HDGM) based on an intraspecific recombinant inbred line (RIL) population consisting of 231 individuals was used to identify QTLs and QTL clusters of fiber quality and yield traits. The weighted gene correlation network analysis (WGCNA) package in R software was utilized to identify WGCNA network and hub genes related to fiber development. Gene functions were verified via virus-induced gene silencing (VIGS) and clustered regularly interspaced short palindromic repeats (CRISPR)/Cas9 strategies. Results: An HDGM consisting of 8045 markers was constructed spanning 4943.01 cM of cotton genome. A total of 295 QTLs were identified based on multi-environmental phenotypes. Among 139 stable QTLs, including 35 newly identified ones, seventy five were of fiber quality and 64 yield traits. A total of 33 QTL clusters harboring 74 QTLs were identified. Eleven candidate hub genes were identified via WGCNA using genes in all stable QTLs and QTL clusters. The relative expression profiles of these hub genes revealed their correlations with fiber development. VIGS and CRISPR/Cas9 edition revealed that the hub gene cellulose synthase 4 ( GhCesA4 , GH_D07G2262) ) positively regulate fiber length and fiber strength formation and negatively lint percentage. Conclusion: Multiple analyses demonstrate that the hub genes harbored in the QTLs orchestrate the fiber development. The hub gene GhCesA4 has opposite pleiotropic effects in regulating trait formation of fiber quality and yield. The results facilitate understanding the genetic basis of negative correlation between cotton fiber quality and yield.
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