Genome-wide comparative transcriptome analysis of CMS-D2 and its maintainer and restorer lines in upland cotton

文献类型: 外文期刊

第一作者: Jianyong Wu

作者: Jianyong Wu;Wu, Jianyong;Xing, Chaozhu;Meng Zhang;Bingbing Zhang;Xuexian Zhang;Liping Guo;Tingxiang Qi;Hailin Wang;Jinfa Zhang;Chaozhu Xing

作者机构:

关键词: Upland cotton;CMS-D2;RNA-seq;Restorer gene;Circadian rhythm

期刊名称:BMC GENOMICS ( 影响因子:3.969; 五年影响因子:4.478 )

ISSN: 1471-2164

年卷期: 2017 年 18 卷

页码:

收录情况: SCI

摘要: Background: Cytoplasmic male sterility (CMS) conferred by the cytoplasm from Gossypium harknessii (D2) is an important system for hybrid seed production in Upland cotton (G. hirsutum). The male sterility of CMS-D2 (i. e., A line) can be restored to fertility by a restorer (i. e., R line) carrying the restorer gene Rf1 transferred from the D2 nuclear genome. However, the molecular mechanisms of CMS-D2 and its restoration are poorly understood. Results: In this study, a genome-wide comparative transcriptome analysis was performed to identify differentially expressed genes (DEGs) in flower buds among the isogenic fertile R line and sterile A line derived from a backcross population (BC8F1) and the recurrent parent, i. e., the maintainer (B line). A total of 1464 DEGs were identified among the three isogenic lines, and the Rf1-carrying Chr_D05 and its homeologous Chr_A05 had more DEGs than other chromosomes. The results of GO and KEGG enrichment analysis showed differences in circadian rhythm between the fertile and sterile lines. Eleven DEGs were selected for validation using qRT-PCR, confirming the accuracy of the RNA-seq results. Conclusions: Through genome-wide comparative transcriptome analysis, the differential expression profiles of CMS-D2 and its maintainer and restorer lines in Upland cotton were identified. Our results provide an important foundation for further studies into the molecular mechanisms of the interactions between the restorer gene Rf1 and the CMS-D2 cytoplasm.

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