Morphological,Molecular and Pathogenicity of Alternaria gaisen Associated with Leaf Brown-Spot on‘Gonggan’Mandarin in China  

作　　者：Cui Mengjiao Sein Lai Lai Aung Wei Xin Yu Zhihe Mo Yanwei Yu Wenchang Deng Jianxin Li Qili 

机构地区：[1]Department of Plant Protection,College of Agriculture,Yangtze University,Jingzhou 434025,China [2]Hubei Engineering Research Center for Pest Forewarning and Management,Yangtze University,Jingzhou 434025,China [3]Department of Applied Microbiology,College of Life Sciences,Yangtze University,Jingzhou 434025,China [4]Weiheng Service Center of Agricultural Resources,Zhaoqing 526500,China [5]Agricultural Ecology and Resource Protection Station of Yichang,Yichang 443000,China [6]Institute of Plant Protection,Guangxi Academy of Agricultural Sciences and Guangxi/Key Laboratory of Biology for Crop Diseases and Insect Pests,Nanning 530007,China

出　　处：《Plant Diseases and Pests》2020年第5期8-13,共6页植物病虫害研究（英文版）

基　　金：Guangxi Key Laboratory of Biology for Crop Disease and Insect Pests(2019-KF-01).

摘　　要：[Objective]This paper was to identify the pathogen of leaf brown-spot on‘gonggan’mandarin(Citrus reticulate var.gonggan)in Zhaoqing,Guangdong Province.[Method]The pathogen was determined based on sequence analysis of ITS,endoPG,tef1,gapdh,Alt a1,rpb2 and opa10-2 genes;the morphological characteristics were recorded on PDA and PCA;and its pathogenicity on excised and intact host leaves of citrus‘gonggan’was tested.[Result]A detailed description of Alternaria gaisen was obtained based on morphological,molecular and pathogenic characterization,which was the causal agent of brown-spot disease on leaves of‘gonggan’mandarin orchard trees in Zhaoqing,Guangdong,China.[Conclusion]This study provides a scientific basis for the effective control of leaf brown-spot on‘gonggan’mandarin.

关 键 词：Alternaria gaisen Citrus reticulate var.gonggan Morphology Molecular analysis PATHOGENICITY 

分 类 号：S436.661[农业科学—农业昆虫与害虫防治]