A differentially methylated region of the ZmCCT10 promoter affects flowering time in hybrid maize

文献类型： 外文期刊

第一作者： Zhou, Zhiqiang

作者： Zhou, Zhiqiang;Lu, Xin;Zhang, Chaoshu;Li, Mingshun;Hao, Zhuanfang;Zhang, Degui;Yong, Hongjun;Han, Jienan;Li, Xinhai;Weng, Jianfeng

作者机构：

关键词： Maize; Flowering time; Hybrid performance; QTL; Epigenetic

期刊名称：CROP JOURNAL （ 影响因子：6.6； 五年影响因子：6.5 ）

ISSN： 2095-5421

年卷期： 2023 年 11 卷 5 期

页码：

收录情况： SCI

摘要： Flowering time (FT) is a key maize domestication trait, variation in which allows maize to grow in a wide range of latitudes. Although previous studies have investigated the genetic control of FT-related traits per se, few studies of FT hybrid performance have been published. We characterized the genomic architecture associated with hybrid performance for FT in a hybrid panel by testcrossing Chang 7-2 with 328 Ye478 x Qi319 recombinant inbred lines (RILs). We identified 11 quantitative trait loci (QTL) for hybrid performance in FT-related traits, including a major QTL qFH10 that controls hybrid performance and heterosis in a summer maize-growing region. However, this locus acts in regulating FT traits per se only in a spring maize-growing region. We validated ZmCCT10 as a candidate gene for qFH10 and found that differences between hybrids and their parental lines in DNA methylation in the differentially methylated region (DMR, -700 to -1520) of the ZmCCT10 promoter affected gene expression pattern and thereby FT in the summer maize-growing region.(c) 2023 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC -ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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