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Proteomic analysis reveals that naturally produced citral can significantly disturb physiological and metabolic processes in the rice blast fungus Magnaporthe oryzae

文献类型： 外文期刊

作者： Zhao, Qijun 1 ; Ding, Yi 1 ; Song, Xingchen 1 ; Liu, Shijiang 1 ; Li, Ming 1 ; Li, Rongyu 1 ; Ruan, Hongchun 4 ;

作者机构： 1.Guizhou Univ, Inst Crop Protect, Guiyang 550025, Peoples R China

2.Prov Key Lab Agr Pest Management Mt Reg, Guiyang 550025, Peoples R China

3.Guizhou Univ, Coll Agr, Guiyang 550025, Peoples R China

4.Fujian Acad Agr Sci, Inst Plant Protect, Fuzhou 350013, Peoples R China

关键词： Magnaporthe oryzae; Citral; Mechanism of action; Two-dimensional electrophoresis

期刊名称：PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY （ 影响因子：3.963； 五年影响因子：4.454 ）

ISSN： 0048-3575

年卷期： 2021 年 175 卷

页码：

收录情况： SCI

摘要： Rice blast (Magnaporthe oryzae), a major fungal disease in rice producing areas all over the world as well as in China, seriously affects the safety of rice production. Citral, a mixture of Z/E and trans isomers, is a natural acycloid monoterpene compound with good bacteriostatic effect on rice blast. To further investigate the underlying molecular mechanism, a comparative proteomics analysis was conducted between citral-treated and non-treated M. oryzae spores through two-dimensional gel electrophoresis and MALDI-TOF mass spectrometry. Our analysis identified 1600-1800 proteins from M. oryzae ZB15, of which 147 were differentially expressed in 100 mu g/mL citral-treated samples relative to the control group. Among these differentially expressed proteins (DEPs), 40 proteins showed significantly different expression. GO enrichment and NCBI conserved domains database analysis showed that the main groups of the cellular component were cytoplasm (23.33%), and the major molecular function categories were ion binding (31.37%), and the major categories of biological processes included small molecule metabolic process (22.22%) and transport (13.89%). Further analysis found that downregulated proteins included the tubulin alpha chain, ATP synthase subunit beta and malate dehydrogenase, while the tubulin beta, enolase were upregulated. These DEPs could possibly limit the availability of energy required for many cellular processes and result in various physiological adaptions of M. oryzae. This study represents the first proteomic analysis of M. oryzae treated by citral and will help to uncover the mode-of-action of this biologically active compound against M. oryzae. These findings have practical implications with respect to the use of citral for fungal disease control.

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