Comprehensive analysis of transcriptional data on seed germination of two maize inbred lines under low-temperature conditions

文献类型： 外文期刊

第一作者： Zhang, Yinchao

作者： Zhang, Yinchao;Liu, Peng;Zou, Chaoying;Chen, Zhong;Yuan, Guangsheng;Gao, Shibin;Pan, Guangtang;Shen, Yaou;Ma, Langlang;Zhang, Yinchao

作者机构：

关键词： Maize; Low-temperature; Seed germination; RNA-Seq; Hub genes

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：6.5； 五年影响因子：6.4 ）

ISSN： 0981-9428

年卷期： 2023 年 201 卷

页码：

收录情况： SCI

摘要： Seed germination directly affect maize yield and grain quality. Low-temperature reduces maize yield by affecting seed germination and seedling growth. However, the molecular mechanism of maize seed germination under low-temperature remains unclear. In this study, the transcriptome data of two maize inbred lines SCL127 (chilling-sensitive) and SCL326 (chilling-tolerant) were analyzed at five time points (0 H, 4 H, 12 H, 24 H, and 48 H) under low-temperature conditions. Through the comparison of SCL127-0 H-vs-SCL326-0 H (Group I), SCL127-4 H-vs-SCL326-4 H (Group II), SCL127-12 H-vs-SCL326-12 H (Group III), SCL127-24 H-vs-SCL326-24 H (Group IV), and SCL127-48 H-vs SCL326-48 H (Group V), a total of 8,526 differentially expressed genes (DEGs) were obtained. Weighted correlation network analysis revealed that Zm00001d010445 was the hub gene involved in seed germination under low-temperature conditions. Zm00001d010445-based association analysis showed that Hap II (G) was the excellent haplotype for seed germination under low-temperature conditions. These findings provide a new perspective for the study of the genetic architecture of maize tolerance to lowtemperature and contribute to the cultivation of maize varieties with low-temperature tolerance.

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