Transcriptome Analysis Reveals the Mechanism of Fungicidal of Thymol Against Fusarium oxysporum f. sp niveum
文献类型： 外文期刊
作者： Zhang, Meng 1 ; Ge, Jing 1 ; Yu, Xiangyang 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Food Qual & Safety, Nanjing 210014, Jiangsu, Peoples R China
2.State Key Lab Breeding Base, Key Lab Food Qual & Safety Jiangsu Prov, Nanjing 210014, Jiangsu, Peoples R China
3.Minist Agr, Key Lab Control Technol & Stand Agroprod Safety &, Nanjing 210014, Jiangsu, Peoples R China
期刊名称：CURRENT MICROBIOLOGY （ 影响因子：2.188； 五年影响因子：2.197 ）
ISSN： 0343-8651
年卷期： 2018 年 75 卷 4 期
页码：
收录情况： SCI
摘要： Fusarium oxysporum: f. sp. niveum (Fusarium oxysporum) causes watermelon wilt, drastically reducing its yield. Thymol (5-methyl-2-(1-methylethyl) phenol, PubChem CID: 6989) has been extensively reported to have antimicrobial activity against pathogenic microorganisms. In this study, the growth of F. oxysporum was significantly inhibited by thymol in vitro. The dry weight of F. oxysporum was decreased significantly. Thymol-induced cell membrane damage was observed at 24 hpi (hours post-incubation). Therefore, the changes in the gene expression level of F. oxysporum after treatment with 80 mu g/mL (average EC50 value) of thymol were analyzed using RNA-Seq to reveal the underlying fungicidal mechanisms of thymol. Among the 5057 differentially expressed genes (DEGs), 2440 and 2617 were up-regulated and down-regulated, respectively. Bioinformatics analysis demonstrated that the expression levels of most genes, including glycosphingolipid biosynthesis and sphingolipid metabolism, were down-regulated. However, the genes involved in antioxidant activity, chitin biosynthesis, and cell wall modification were up-regulated. These results were verified by quantitative reverse transcription PCR (qRT-PCR). According to these results, thymol produces reactive oxygen species (ROS) accumulation and destroys the integrity of the cell wall and cell membrane by inhibiting the genes involved in cell wall and cell membrane synthesis.
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