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进境高粱种子中葡萄茎枯病菌的检疫鉴定
引用本文:张 宇,许萍萍,吴 晶,杨 静,李 彬,吴翠萍.进境高粱种子中葡萄茎枯病菌的检疫鉴定[J].植物保护,2017,43(3):192-198.
作者姓名:张 宇  许萍萍  吴 晶  杨 静  李 彬  吴翠萍
作者单位:1. 江苏出入境检验检疫局,南京,210001;2. 江苏省南京出入境检验检疫局,南京,210001
基金项目:国家质量监督检验检疫总局科技计划(2012IK278);“十二五”国家科技支撑计划(2012BAK11B03)
摘    要:从进境的美国高粱样品中分离到一株与葡萄茎枯病菌Didymella glomerata相似的菌株4358-17。其菌落形态和显微特征均与葡萄茎枯病菌一致。多个位点(LSU、ITS、TUB2、ACT)序列比对显示菌株4358-17与GenBank登录号为KT389718、FJ427004、FJ427115、FJ426896的葡萄茎枯病菌相似性均达到100%。系统发育分析结果表明菌株4358-17与葡萄茎枯病菌株聚集在同一个分支上,支持率为99%。菌株4358-17接种高粱和小麦叶片,4d后接种部位出现明显症状。根据上述试验结果,将进境美国高粱样品中分离的菌株4358-17鉴定为葡萄茎枯病菌。

关 键 词:葡萄茎枯病菌  形态特征  系统发育分析  致病性测试
收稿时间:2016/8/1 0:00:00
修稿时间:2016/9/27 0:00:00

Identification of Didymella glomerata on imported Sorghum bicolor
Zhang Yu,Xu Pingping,Wu Jing,Yang Jing,Li Bin,Wu Cuiping.Identification of Didymella glomerata on imported Sorghum bicolor[J].Plant Protection,2017,43(3):192-198.
Authors:Zhang Yu  Xu Pingping  Wu Jing  Yang Jing  Li Bin  Wu Cuiping
Institution:1. Jiangsu EntryExit Inspection and Quarantine Bureau, Nanjing 210001, China; 2. Nanjing EntryExit Inspection and Quarantine Bureau, Nanjing 210001, China
Abstract:The isolate 4358-17 was obtained from imported Sorghum bicolor from America. It was similar to Didymella glomerata in morphology. BLAST analysis indicated that LSU, ITS, TUB2 and ACT sequence showed 100% identity with the sequences with accession numbers of KT389718, FJ427004, FJ427115 and FJ426896, respectively. Phylogenetic analysis revealed that the isolate 4358-17 clustered within D.glomerata strains. Pathogenicity test showed that it could cause leaf spot on sorghum and wheat 4 d after inoculation. Based on all above results, the isolate 4358-17 was identified as D.glomerata.
Keywords:Didymella glomerata  morphological characters  phylogenetic analysis  pathogenicity test
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