Molecular Characterization,Morphology and Pathogenicity of Curvularia pseudobrachyspora,A New Causal Agent of Leaf Spot on Banana  

作　　者：Yanxiang QI Hong ZHAO Yixian XIE Xin ZHANG Jun PENG Fanyun ZENG 

机构地区：[1]Environment and Plant Protection Institute,Chinese Academy of Tropical Agricultural Sciences/Hainan Provincial Key Laboratory of Pests Detection and Control for Tropical Agriculture,Haikou 571101,China [2]Guizhou University,Guiyang 550025,China

出　　处：《Plant Diseases and Pests》2023年第1期6-8,共3页植物病虫害研究（英文版）

基　　金：Supported by High level Talents Project of Hainan Provincial Natural Science Foundation of China(2019RC278);The Earmarked Fund for CARS(CARS-31)。

摘　　要：[Objectives]The paper was to study molecular characterization,morphology and pathogenicity of Curvularia pseudobrachyspora,a new causal agent of leaf spot on banana.[Methods]Banana(Musa acuminate)leaves with streaks or long ellipse-shaped lesions were sampled in an orchard of Danzhou City,Hainan Province,China in 2021.Fungus isolates were isolated from the diseased tissues and further identified as C.pseudobrachyspora based on morphological characteristics of colony,conidiophore and spore,phylogenetic analyses of the ITS region,GAPDH and TEF-1αgenes.[Results]In the pathogenicity test,the fungus re-isolated from inoculated leaves with necrotic lesions was identified morphologically and molecularly,fulfilling Koch's postulates.[Conclusions]C.pseudobrachyspora is a new pathogen causing leaf spot of banana in China and the world.

关 键 词：Leaf spot disease BANANA Curvularia pseudobrachyspora Pathogen identification 

分 类 号：S436.68[农业科学—农业昆虫与害虫防治]