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Exploration of Mycotoxin Accumulation and Transcriptomes of Different Wheat Cultivars during Fusarium graminearum Infection

文献类型： 外文期刊

作者： Li, Kailin 1 ; Yu, Dianzhen 1 ; Yan, Zheng 1 ; Liu, Na 1 ; Fan, Yingying 2 ; Wang, Cheng 2 ; Wu, Aibo 1 ;

作者机构： 1.Chinese Acad Sci, Univ Chinese Acad Sci, Shanghai Inst Nutr & Hlth, SIBS UGENT SJTU Joint Lab Mycotoxin Res,CAS Key L, Shanghai 200031, Peoples R China

2.Xinjiang Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Key Lab Agroprod Qual & Safety Xinjiang, Minist Agr & Rural Affairs,Lab Qual & Safety Risk, Urumqi 830091, Peoples R China

关键词： wheat; Fusarium graminearum; mycotoxin; water activity; temperature; transcriptome

期刊名称：TOXINS （ 影响因子：5.075； 五年影响因子：5.305 ）

ISSN：

年卷期： 2022 年 14 卷 7 期

页码：

收录情况： SCI

摘要： Fusarium graminearum is one of the most devastating diseases of wheat worldwide, and can cause Fusarium head blight (FHB). F. graminearum infection and mycotoxin production mainly present in wheat and can be influenced by environmental factors and wheat cultivars. The objectives of this study were to examine the effect of wheat cultivars and interacting conditions of temperature and water activity (a(w)) on mycotoxin production by two strains of F. graminearum and investigate the response mechanisms of different wheat cultivars to F. graminearum infection. In this regard, six cultivars of wheat spikes under field conditions and three cultivars of post-harvest wheat grains under three different temperature conditions combined with five water activity (a(w)) conditions were used for F. graminearum infection in our studies. Liquid chromatography tandem mass spectrometry (LC-MS/MS) analysis showed significant differences in the concentration of Fusarium mycotoxins deoxynivalenol (DON) and its derivative deoxynivalenol-3-glucoside (D3G) resulting from wheat cultivars and environmental factors. Transcriptome profiles of wheat infected with F. graminearum revealed the lower expression of disease defense-factor-related genes, such as mitogen-activated protein kinases (MAPK)-encoding genes and hypersensitivity response (HR)-related genes of infected Annong 0711 grains compared with infected Sumai 3 grains. These findings demonstrated the optimal temperature and air humidity resulting in mycotoxin accumulation, which will be beneficial in determining the conditions of the relative level of risk of contamination with FHB and mycotoxins. More importantly, our transcriptome profiling illustrated differences at the molecular level between wheat cultivars with different FHB resistances, which will lay the foundation for further research on mycotoxin biosynthesis of F. graminearum and regulatory mechanisms of wheat to F. graminearum.

  • 相关文献

[1]Exploration of Mycotoxin Accumulation and Transcriptomes of Different Wheat Cultivars during Fusarium graminearum Infection. Li, Kailin,Yu, Dianzhen,Yan, Zheng,Liu, Na,Wu, Aibo,Fan, Yingying,Wang, Cheng. 2022

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