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

文献类型： 外文期刊

作者： Wang, Jin 1 ; Wei, Minghua 1 ; Wang, Haiyan 1 ; Mo, Changjuan 1 ; Zhu, Yingchun 3 ; Kong, Qiusheng 1 ;

作者机构： 1.Huazhong Agr Univ, Coll Hort & Forestry Sci, Natl Key Lab Germplasm Innovat & Utilizat Crops, Wuhan 430070, Peoples R China

2.Hunan Agr Univ, Coll Hort, Engn Res Ctr Germplasm Innovat & New Varieties Bre, Key Lab Vegetable Biol Hunan Prov, Changsha 410128, Peoples R China

3.Chinese Acad Agr Sci, Inst Western Agr, Changji 831100, Peoples R China

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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