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Transcriptome Analysis Reveals the Complex Molecular Mechanisms of Brassica napus-Sclerotinia sclerotiorum Interactions

文献类型： 外文期刊

作者： Xu, Binjie 2 ; Gong, Xi 3 ; Chen, Song 1 ; Hu, Maolong 1 ; Zhang, Jiefu 1 ; Peng, Qi 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Ind Crops, Key Lab Cotton & Rapeseed, Minist Agr, Nanjing, Peoples R China

2.Chengdu Univ Tradit Chinese Med, Innovat Inst Chinese Med & Pharm, Chengdu, Peoples R China

3.Sichuan Agr Univ, Triticeae Res Inst, Chengdu, Peoples R China

4.Jiangsu Univ, Inst Life Sci, Zhenjiang, Jiangsu, Peoples R China

关键词： Sclerotinia sclerotiorum; Brassica napus; interaction; transcriptome analysis; plant hormones; cell wall enzymes

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.754； 五年影响因子：6.612 ）

ISSN： 1664-462X

年卷期： 2021 年 12 卷

页码：

收录情况： SCI

摘要： Sclerotinia stem rot caused by Sclerotinia sclerotiorum is a devastating disease for many important crops worldwide, including Brassica napus. Although numerous studies have been performed on the gene expression changes in B. napus and S. sclerotiorum, knowledge regarding the molecular mechanisms of B. napus-S. sclerotiorum interactions is limited. Here, we revealed the changes in the gene expression and related pathways in both B. napus and S. sclerotiorum during the sclerotinia stem rot (SSR) infection process using transcriptome analyses. In total, 1,986, 2,217, and 16,079 differentially expressed genes (DEGs) were identified in B. napus at 6, 24, and 48 h post-inoculation, respectively, whereas 1,511, 1,208, and 2,051 DEGs, respectively, were identified in S. sclerotiorum. The gene ontology and Kyoto Encyclopedia of Genes and Genomes analyses showed that most of the hormone-signaling pathways in B. napus were enriched, and thus, the hormone contents at four stages were measured. The DEGs and hormone contents revealed that salicylic acid was activated, while the jasmonic acid pathway was repressed at 24 h post-inoculation. Additionally, the expressional patterns of the cell wall-degrading enzyme-encoding genes in S. sclerotiorum and the hydrolytic enzymes in B. napus were consistent with the SSR infection process. The results contribute to a better understanding of the interactions between B. napus and S. sclerotiorum and the development of future preventive measures against SSR.

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