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

文献类型： 外文期刊

作者： Wang, Bin 1 ; Zhang, Yongyan 1 ; Liu, Jiapeng 1 ; Sheng, Ou 3 ; Liu, Fan 1 ; Qiu, Dongliang 1 ; Lue, Peitao 1 ; Deng, Guiming 3 ; Cheng, Chunzhen 1 ;

作者机构： 1.Fujian Agr & Forestry Univ, Coll Hort, Fuzhou 350002, Peoples R China

2.Shanxi Agr Univ, Coll Hort, Jinzhong 030801, Peoples R China

3.Guangdong Acad Agr Sci, Inst Fruit Tree Res, Key Lab South Subtrop Fruit Biol & Genet Resource, Minist Agr & Rural Affairs,Guangdong Key Lab Trop, Guangzhou 510640, Peoples R China

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

页码：

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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