A time-course transcriptome reveals the response of watermelon to low stress

文献类型： 外文期刊

第一作者： Wang, Jin

作者： Wang, Jin;Wei, Minghua;Wang, Haiyan;Mo, Changjuan;Kong, Qiusheng;Wang, Jin;Zhu, Yingchun

作者机构：

关键词： watermelon; time-course transcriptome; low temperature; ClMYB14; co-expression

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：4.4； 五年影响因子：4.8 ）

ISSN： 2095-3119

年卷期： 2025 年 24 卷 5 期

页码：

收录情况： SCI

摘要： Watermelon (Citrullus lanatus) is an economically important horticultural crop. However, it is susceptible to low-temperature stress, which significantly challenges its production and supply. Despite the great economic importance of watermelon, little is known about its response to low-temperature stress at the transcriptional level. In this study, we performed a time-course transcriptome analysis to systematically investigate the regulatory network of watermelon under low-temperature stress. Six low-temperature-responsive gene clusters representing six expression patterns were identified, revealing diverse regulation of metabolic pathways in watermelon under low-temperature stress. Analysis of temporally specific differentially expressed genes revealed the time-dependent nature of the watermelon response to low temperature. Moreover, ClMYB14 was found to be a negative regulator of low-temperature tolerance as ClMYB14-OE lines were more susceptible to low-temperature stress. Co-expression network analysis demonstrated that ClMYB1 4 participates in the low-temperature response by regulating the unsaturated fatty acid pathway and heat shock transcription factor. This study provides substantial information for understanding the regulatory network of watermelon in response to low-temperature stress, and identifies candidate genes for the genetic improvement of watermelon with higher low-temperature tolerance.

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