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Identification and Characterization of the Causal Agent of Gummy Stem Blight from Muskmelon and Watermelon in East China

文献类型： 外文期刊

作者： Li, Ping-Fang 1 ; Ren, Run-Sheng 1 ; Yao, Xie-Feng 1 ; Xu, Jin-Hua 1 ; Babu, Binoy 2 ; Paret, Mathews L. 2 ; Yang, Xin 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Vegetable Crops, Nanjing 210014, Jiangsu, Peoples R China

2.Univ Florida, Inst Food & Agr Sci, North Florida Res & Educ Ctr, Quincy, FL 32351 USA

关键词： aggressiveness;Didymella bryoniae;internal transcribed spacer sequence

期刊名称：JOURNAL OF PHYTOPATHOLOGY （ 影响因子：1.789； 五年影响因子：1.574 ）

ISSN：

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收录情况： SCI

摘要： Gummy stem blight (GSB) is one of the most destructive foliar diseases of cucurbits, worldwide. To identify and characterize the pathogen which causes GSB on watermelon and muskmelon in East China, morphological characteristics, pathogenicity assays as well as sequence characterization of the rDNA internal transcribed spacer (ITS) were performed on 41 isolates collected from Jiangsu, Zhejiang, Anhui and Jiangxi provinces. The mycelia of all the isolates were white on top and olivaceous green to black with concentric circles at the bottom on potato-dextrose agar medium. The isolates differed significantly on aggressiveness based on pathogenicity assays. rDNA-ITS sequences and phylogenetic analysis confirmed the isolates as Didymella bryoniae. The isolates were found to be highly identical with the exception of 13 isolates, which had a guanine substitution instead of adenine at position 131 of the ITS.

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[1]Rapid and Sensitive Detection of Didymella bryoniae by Visual Loop-Mediated Isothermal Amplification Assay. Yao, Xiefeng,Li, Pingfang,Xu, Jinghua,Zhang, Man,Ren, Runsheng,Liu, Guang,Yang, Xingping. 2016

[2]Comparative aggressiveness of Microdochium nivale and M-majus and evaluation of screening methods for Fusarium seedling blight resistance in wheat cultivars. Ren, Runsheng,Ray, Rumiana V.,Ren, Runsheng,Yang, Xingping.

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