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Joint Transcriptome and Metabolome-Based Analysis Reveals Key Modules and Candidate Genes for Drought Tolerance in Wheat (Triticum aestivum L.) Seedlings

文献类型： 外文期刊

作者： Li, Ling 1 ; Zeng, Chaowu 2 ; Men, Yihan 1 ; Li, Na 1 ; Zhao, Yujiao 1 ; Chen, Zeyu 1 ; Huang, Yanju 1 ; Hu, Yingang 1 ; Zotova, Lyudmila 3 ; Dauren, Serikbay 3 ; Song, Quanhao 4 ; Li, Jianjiang 2 ; Chen, Liang 1 ;

作者机构： 1.Northwest A&F Univ, State Key Lab Crop Stress Resistance & High Effici, Collage Agron, Yangling 712100, Peoples R China

2.Xinjiang Acad Agr Sci, Urumqi 830091, Peoples R China

3.S Seifullin Kazakh Agro Tech Res Univ, Fac Agron, Astana 010000, Kazakhstan

4.Zhumadian Acad Agr Sci, Zhumadian 463000, Peoples R China

关键词： drought; metabolomics; O2PLS; transcriptomics; WGCNA; wheat

期刊名称：AGRONOMY-BASEL （ 影响因子：3.4； 五年影响因子：3.8 ）

ISSN：

年卷期： 2025 年 15 卷 4 期

页码：

收录情况： SCI

摘要： Wheat plays a crucial role in global food security. However, drought stress severely restricts its growth and development, and drought during the seedling stage significantly affects its organogenesis, thereby affecting yield. To study wheat drought tolerance mechanisms at the seedling stage and to explore drought tolerance gene resources, this study focused on the drought-tolerant wheat variety Bainong 207 and performed RNA-Seq and metabolome sequencing on leaves collected at the three-leaf stage under drought stress conditions. Drought stress significantly altered the expression of 12,930 genes and 2544 metabolites in wheat seedlings. Through bioinformatics methods such as O2PLS-DA, a gene-metabolite correlation network was constructed, and key regulatory genes within this network were subsequently identified. The results identified the important gene module MEbrown and metabolite module Meta6 and finally screened 20 transcription factors that are closely related to drought response. These transcription factors were predicted to be able to combine and regulate the expression of six key genes, which together help the variety to improve drought tolerance under drought stress conditions by regulating reactive oxygen species metabolism, maintaining intracellular redox homeostasis, promoting wax biosynthesis, enhancing the osmotic stress response, and regulating abscisic acid response.

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