Metconazole inhibits fungal growth and toxin production in major Fusarium species that cause rice panicle blight
文献类型： 外文期刊
作者： Wang, Bingbing 1 ; Wang, Shuang 1 ; He, Dan 2 ; Zhou, Yunyun 2 ; Qiu, Jianbo 1 ; Gao, Tao 1 ; Lee, Yin-Won 2 ; Shi, Jianrong 1 ; Xu, Jianhong 1 ; Liu, Xin 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, Minist Sci & Technol, Inst Food Safety & Nutr,State Key Lab Cultivat Bas, Nanjing 210014, Jiangsu, Peoples R China
3.Nanjing Agr Univ, Collage Plant Protect, Nanjing 210095, Peoples R China
4.Seoul Natl Univ, Sch Agr Biotechnol, Seoul 08826, South Korea
关键词： Rice panicle blight; Toxigenic Fusarium spp.; Metconazole; Ergosterol; Control efficacy
期刊名称：PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY （ 影响因子：4.2； 五年影响因子：4.6 ）
ISSN： 0048-3575
年卷期： 2024 年 204 卷
页码：
收录情况： SCI
摘要： Rice panicle blight (RPB) caused by various Fusarium spp. is an emerging disease in the major rice-growing regions of China. Epidemics of this disease cause significant yield loss and reduce grain quality by contaminating panicles with different Fusarium toxins. However, there is currently no registered fungicide for the control of RPB in China. The 14 alpha-demethylation inhibitor (DMI) fungicide metconazole has been shown to be effective against several Fusarium spp. that cause wheat head blight, wheat crown rot and maize ear rot. In this study, we investigated the specific activity of metconazole against six Fusarium spp. that cause RPB. Metconazole significantly inhibited mycelial growth, conidium formation, germination, germ tube elongation and major toxin production in Fusarium strains collected from major rice-growing regions in China, as well as disrupting cell membrane function by inhibiting ergosterol biosynthesis. Greenhouse experiments indicated a significant reduction in blight occurrence and toxin accumulation in rice panicles treated with metconazole. Overall, our study demonstrated the potential of metconazole for managing RPB and toxin contamination, as well as providing insight into its bioactivities and modes of action of metconazole against distinct Fusarium spp.
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