A New Leaf Blight Disease Caused by Alternaria jacinthicola on Banana in China

文献类型： 外文期刊

第一作者： Wang, Bin

作者： Wang, Bin;Zhang, Yongyan;Liu, Jiapeng;Liu, Fan;Qiu, Dongliang;Lue, Peitao;Cheng, Chunzhen;Zhang, Yongyan;Cheng, Chunzhen;Sheng, Ou;Liu, Fan;Deng, Guiming

作者机构：

关键词： banana; leaf blight disease; Alternaria jacinthicola; pathogen isolation and identification

期刊名称：HORTICULTURAE （ 影响因子：2.923； 五年影响因子：3.582 ）

ISSN：

年卷期： 2022 年 8 卷 1 期

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收录情况： SCI

摘要： A leaf blight disease with an incidence level of about 50% was found on Robusta banana in Guangdong province of China in September 2020. The early symptom appeared as pale gray to black brown, irregular, small, necrotic lesions mainly on the top 3-5 leaves. Severely infected leaves were withered and necrotic. Two representative fungus strains, strain L1 and strain L2, were isolated from affected banana leaves, and morphological and molecular identification analysis confirmed that the two fungi were both Alternaria jacinthicola. Many Alternaria species have been reported to cause wilting, decay, leaf blight and leaf spots on plants and lead to serious economic losses in their production, including A. alternata, causing leaf blight and leaf sport diseases on banana. The Koch's postulates of A. jacinthicola causing the leaf blight disease was further fulfilled, which confirmed that it is the causal agent of this disease. To our knowledge, this is the first report of A. jacinthicola causing leaf blight on banana in China.

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