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Investigating the Resistance Mechanism of Wheat Varieties to Fusarium Head Blight Using Comparative Metabolomics

文献类型： 外文期刊

作者： Dong, Yifan 1 ; Xia, Xiaobo 3 ; Ahmad, Dawood 1 ; Wang, Yuhua 3 ; Zhang, Xu 1 ; Wu, Lei 1 ; Jiang, Peng 1 ; Zhang, Peng 1 ; Yang, Xiujuan 2 ; Li, Gang 3 ; He, Yi 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, CIMMYT JAAS Joint Ctr Wheat Dis, Res Ctr Wheat Scab, Nanjing 210014, Peoples R China

2.Univ Adelaide, Waite Res Inst, Sch Agr Food & Wine, Waite Campus, Adelaide, SA 5064, Australia

3.Nanjing Agr Univ, Coll Plant Protect, Dept Plant Pathol, Nanjing 210095, Peoples R China

4.Univ Agr, Inst Biotechnol & Genet Engn, Peshawar 25110, Pakistan

关键词： metabolomics; wheat; Fusarium head blight; fungistatic; gene expression; resistance; susceptibility

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）

ISSN：

年卷期： 2023 年 24 卷 4 期

页码：

收录情况： SCI

摘要： Fusarium head blight (FHB) is primarily caused by Fusarium graminearum and severely reduces wheat yield, causing mycotoxin contamination in grains and derived products. F. graminearum-secreted chemical toxins stably accumulate in plant cells, disturbing host metabolic homeostasis. We determined the potential mechanisms underlying FHB resistance and susceptibility in wheat. Three representative wheat varieties (Sumai 3, Yangmai 158, and Annong 8455) were inoculated with F. graminearum and their metabolite changes were assessed and compared. In total, 365 differentiated metabolites were successfully identified. Amino acids and derivatives, carbohydrates, flavonoids, hydroxycinnamate derivatives, lipids, and nucleotides constituted the major changes in response to fungal infection. Changes in defense-associated metabolites, such as flavonoids and hydroxycinnamate derivatives, were dynamic and differed among the varieties. Nucleotide and amino acid metabolism and the tricarboxylic acid cycle were more active in the highly and moderately resistant varieties than in the highly susceptible variety. We demonstrated that two plant-derived metabolites, phenylalanine and malate, significantly suppressed F. graminearum growth. The genes encoding the biosynthetic enzymes for these two metabolites were upregulated in wheat spike during F. graminearum infection. Thus, our findings uncovered the metabolic basis of resistance and susceptibility of wheat to F. graminearum and provided insights into engineering metabolic pathways to enhance FHB resistance in wheat.

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