Identification and fungicide sensitivity of Alternaria tenuissima causing leaf spot of Tetrapanax papyrifer newly reported in China

文献类型： 外文期刊

第一作者： Tang, Xian-Ying

作者： Tang, Xian-Ying;Ban, Rui;Javed, Khadija;Ding, Hai-Xia;Wu, Xue-Ping;Li, Hong-Tao;Peng, Li-Juan

作者机构：

关键词： Alternaria tenuissima; chemical control; leaf spot; pathogenicity; rice-paper plant; Tetrapanax papyrifer

期刊名称：JOURNAL OF PHYTOPATHOLOGY （ 影响因子：1.5； 五年影响因子：1.8 ）

ISSN： 0931-1785

年卷期： 2023 年

页码：

收录情况： SCI

摘要： Tetrapanax papyrifer, the rice-paper plant, is an evergreen shrub and is traditionally used as a herbal medicine in China. In October 2021, a serious leaf spot disease was extensively observed on T. papyrifer in Guizhou, China. Given the limited information available about the aetiology of this disease, isolations were performed, the morphological characteristics and multi-locus phylogenetic analysis of the fungus associated with the disease were described, and the pathogenicity tests and Koch's postulates were completed. To our knowledge, this is the first report of leaf spot on T. papyrifer caused by Alternaria tenuissima in China. Among 11 fungicides tested, 10% difenoconazole WDG had the best inhibition effect in vitro with EC50 values at 0.1 mu g mL(-1). This study provides new information for the identification and chemical control of Alternaria leaf spot of T. papyrifer.

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