Characterisation of Fusarium oxysporum f. sp. radicis-lycopersici in Infected Tomatoes in Inner Mongolia, China
文献类型: 外文期刊
第一作者: Yang, Yongqing
作者: Yang, Yongqing;Wang, Yong;Gao, Jing;Shi, Zhidan;Chen, Wenjin;Huangfu, Haiyan;Liu, Yan;Li, Zhengnan
作者机构:
关键词: identification of fusarium crown and root rot; Fusarium oxysporum f. sp. radicis-lycopersici; fungicide sensitivity; plant resistance; Inner Mongolia
期刊名称:JOURNAL OF FUNGI ( 影响因子:4.0; 五年影响因子:4.5 )
ISSN:
年卷期: 2024 年 10 卷 9 期
页码:
收录情况: SCI
摘要:
Fusarium crown and root rot (FCRR), caused by Fusarium oxysporum f. sp. radicis-lycopersici (FORL), is an economically important disease that affects tomatoes worldwide and has become more prevalent in China in recent years. In 2021 and 2022, tomato plants in greenhouses in Hohhot, Inner Mongolia, were observed showing symptoms of stunting, premature loss of lower leaves, and root rot. Fungal pathogens were isolated from 20 infected tomato plants and identified based on morphological observation and DNA sequencing. Twelve isolates were consistently identified as Fusarium oxysporum f. sp. radicis-lycopersici (FORL) via an analysis of the ITS, TEF-1 alpha, and pgx4 genes. This is the first report of FORL in Inner Mongolia, China. The isolates were examined for their pathogenicity by inoculating them on tomatoes, eggplants, peppers, and chickpeas. The fungicide sensitivity of the isolates was determined. Effective concentrations for 50% growth inhibition (EC50) were measured using seven fungicides. The EC50 values of tebuconazole and prochloraz were <1.0 mu g
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