Rootstock Selection for Resisting Cucumber Fusarium Wilt in Hainan and Corresponding Transcriptome and Metabolome Analysis
文献类型： 外文期刊
作者： Wang, Lingyu 1 ; Yi, Qiuxia 1 ; Yu, Panpan 1 ; Kumar, Sunjeet 1 ; Zhang, Xuyang 1 ; Wu, Chenxi 1 ; Weng, Zhenglong 1 ; Xing, Mengyu 1 ; Huo, Kaisen 3 ; Chen, Yanli 1 ; Zhu, Guopeng 1 ;
作者机构： 1.Hainan Univ, Sch Breeding & Multiplicat, Sanya lnst Breeding & Multiplicat, Sanya 572025, Peoples R China
2.Hainan Univ, Trop Agr & Forestry Coll, Key Lab Qual Regulat Trop Hort Crops Hainan Prov, Haikou 570228, Peoples R China
3.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Haikou 571101, Peoples R China
关键词：
rootstock selection; cucumber
期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）
ISSN： 2223-7747
年卷期： 2025 年 14 卷 3 期
页码：
收录情况： SCI
摘要： Soilborne diseases are important problems in modern agricultural production. Fusarium oxysporum f. sp. cucumerinum (FOC) is one of the predominant soilborne pathogens threatening cucumber cultivation, especially in Hainan, China. This study assessed FOC-resistant rootstocks using incidence rate, disease severity index (DSI), and area under the disease severity index curve (AUDRC), revealing "JinJiaZhen (Mc-4)" as resistant and "JinGangZhuan 1901 (Mc-18)" as susceptible. Comprehensive transcriptome and metabolome analyses were conducted to investigate the defense mechanisms of these rootstocks, revealing key pathways, such as the mitogen-activated protein kinase (MAPK) signaling pathway, starch and sucrose metabolism, and phenylpropanoid biosynthesis, which are crucial for plant disease resistance. Additionally, the study compared the resistance mechanisms of two other rootstocks, Mc-4 and Mc-18, against FOC infection through transcriptomic and metabolomic analyses. Mc-4 exhibited a higher number of differentially expressed genes (DEGs) related to phenylpropanoid biosynthesis compared to Mc-18. Untargeted metabolomics identified 4093 metabolites, with phenylpropanoid biosynthesis, isoquinoline alkaloid biosynthesis, and porphyrin metabolism as primary annotated pathways. On the sixth day post-inoculation, when the number of DEGs and differentially accumulated metabolites (DAMs) was highest, phenylpropanoid biosynthesis emerged as a key pathway in Mc-4, with 37 DEGs and 8 DAMs identified. Notably, Mc-4 showed upregulated expression of genes encoding enzymes involved in phenylpropanoid biosynthesis and increased accumulation of related metabolites, such as coniferyl-aldehyde, coniferyl alcohol, and coniferyl acetate. These findings highlight the differential defense mechanisms between resistant and sensitive rootstocks and provide insights into plant-pathogen interactions. This study's results will contribute to the development of better and disease-free cucumber varieties, promoting sustainable agriculture.
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