Integrated GWAS, linkage, and transcriptome analysis to identify genetic loci and candidate genes for photoperiod sensitivity in maize
文献类型： 外文期刊
作者： Jiang, Yulin 1 ; Guo, Shuang 1 ; Wang, Dong 1 ; Tu, Liang 1 ; Liu, Pengfei 1 ; Guo, Xiangyang 1 ; Wang, Angui 1 ; Zhu, Yunfang 1 ; Lu, Xuefeng 1 ; Chen, Zehui 1 ; Wu, Xun 1 ;
作者机构： 1.Guizhou Acad Agr Sci, Inst Upland Food Crops, Guiyang, Guizhou, Peoples R China
2.Minist Agr & Rural Affairs, Key Lab Crop Genet Resources & Germplasm Innovat K, Guiyang, Peoples R China
3.Guizhou Univ, Coll Agr, Guiyang, Peoples R China
关键词： photoperiod sensitivity; genetic loci; GWAS; QTL; joint analysis; candidate gene
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：4.8； 五年影响因子：5.7 ）
ISSN： 1664-462X
年卷期： 2024 年 15 卷
页码：
收录情况： SCI
摘要： Introduction Maize photosensitivity and the control of flowering not only are important for reproduction, but also play pivotal roles in the processes of domestication and environmental adaptation, especially involving the utilization strategy of tropical maize in high-latitude regions.Methods In this study, we used a linkage mapping population and an inbred association panel with the photoperiod sensitivity index (PSI) phenotyped under different environments and performed transcriptome analysis of T32 and QR273 between long-day and short-day conditions.Results The results showed that PSIs of days to tasseling (DTT), days to pollen shedding (DTP), and days to silking (DTS) indicated efficacious interactions with photoperiod sensitivity for maize latitude adaptation. A total of 48 quantitative trait loci (QTLs) and 252 quantitative trait nucleotides (QTNs) were detected using the linkage population and the inbred association panel. Thirteen candidate genes were identified by combining the genome-wide association study (GWAS) approach, linkage analysis, and transcriptome analysis, wherein five critical candidate genes, MYB163, bif1, burp8, CADR3, and Zm00001d050238, were significantly associated with photoperiod sensitivity.Discussion These results would provide much more abundant theoretical proofs to reveal the genetic basis of photoperiod sensitivity, which would be helpful to understand the genetic changes during domestication and improvement and contribute to reducing the barriers to use of tropical germplasm.
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