Antifungal activities of metconazole against the emerging wheat pathogen Fusarium pseudograminearum
文献类型： 外文期刊
作者： Liu, Xin 1 ; Wang, Shuang 1 ; Fan, Zhongyue 4 ; Wu, Jiawen 3 ; Wang, Liwen 1 ; He, Dan 2 ; Mohamed, Sherif Ramzy 5 ; Dawood, Dawood H. 6 ; Shi, Jianrong 1 ; Gao, Tao 2 ; Xu, Jianhong 1 ;
作者机构： 1.Jiangsu Univ, Sch Food & Biol Engn, Zhenjiang 212013, Jiangsu, Peoples R China
2.Jiangsu Acad Agr Sci, Collaborat Innovat Ctr Modern Grain Circulat & Saf, Key Lab Control Technol & Standard Agroprod Safety, Jiangsu Key Lab Food Qual & Safety,State Key Lab C, Nanjing, Jiangsu, Peoples R China
3.Jiangsu Plant Protect & Plant Quarantine Stn, Nanjing 210036, Jiangsu, Peoples R China
4.Xinxiang Med Univ, Sanquan Coll, Coll Life Sci, Xinxiang 453003, Henan, Peoples R China
5.Natl Res Ctr, Food Toxicol & Contaminants Dept, Giza 12411, Egypt
6.Mansoura Univ, Fac Agr, Dept Agr Chem, Mansoura 35516, Egypt
关键词： Fusarium pseudograminearum; Metconazole; Fusarium crown rot; Sensitivity; RNA-Seq; Control efficacy
期刊名称：PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY （ 影响因子：4.966； 五年影响因子：4.591 ）
ISSN： 0048-3575
年卷期： 2023 年 190 卷
页码：
收录情况： SCI
摘要： Fusarium crown rot of wheat is a serious fungal disease that occurs worldwide. The disease has been emerging in the major wheat-growing areas in China since 2010. Fusarium pseudogramineaum is the predominant causative pathogen of crown rot of wheat in China. The 14 alpha-demethylation inhibitor (DMI) fungicide metconazole has been shown to be effective against Fusarium spp., but little is known about its specific activity against F. pseudogramineaum. Metconazole exhibited strong antifungal activities against all thirty-nine F. pseudogramineaum strains collected from the major wheat-growing areas in China. Metconazole inhibited mycelial growth and conidial germ tube elongation of F. pseudograminearum. Metconazole treatment significantly reduced the production of major toxins and the expression levels of toxin biosynthesis genes. Genome-wide transcriptional profiling of F. pseudograminearum in response to metconazole indicated that the expression of genes involved in ergosterol biosynthesis, including fungicide target genes (cyp51 genes), was significantly induced by metconazole. Nine ATP-binding cassette (ABC) transporter-encoding genes were significantly expressed in response to metconazole treatment. Reduced ergosterol production and antioxidant enzyme ac-tivities were observed after metconazole treatment. Greenhouse experiments indicated a significant reduction in crown rot occurrence in wheat after seed treatment with metconazole. This study evaluated the potential of metconazole to manage wheat crown rot and provides information to understand its antifungal activities and mechanism of action against F. pseudograminearum.
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