刺槐白粉病病原菌鉴定  

The identification of powdery mildew caused by Erysiphe palczewskii on Robinia pseudoacacia

作　　者：迟梦宇 钱恒伟 赵颖[1] 荆佳辰 梁晨[1,2] 黄金光[1,2] 

机构地区：[1]青岛农业大学农学与植物保护学院,青岛266109 [2]山东省植物病虫害综合防控重点实验室,青岛266109

出　　处：《植物病理学报》2016年第5期707-709,共3页Acta Phytopathologica Sinica

基　　金：山东省"泰山学者"建设工程专项经费(TSSD201316);应用型人才培养特色名校建设工程大学生科技创新项目基金(QAU201532)

摘　　要：刺槐（Robinia pseudoacacia L.）又名洋槐,属蝶形花科刺槐属的落叶乔木。原生于北美洲,现被广泛引种到亚洲、欧洲等地。刺槐白粉病是刺槐叶部、嫩枝病害,能降低叶片光合作用,严重的引起叶部畸形、茎尖和枝梢枯死。Braun最早记载中国刺槐白粉病病原菌为Microsphaera subtrichotoma。Robinia pseudoacacia powdery mildew occurred seriously in Qingdao district in 2015, with the disease rate up to 50%. The complete internal transcribed spacer （ITS） region of rDNA of the fungus was amplified with primers ITS1 and ITS4 and sequenced. The resultant 622 bp sequence was deposited in GenBank （Accession No. KT375087）. A GenBank BLAST search of the Chinese isolate showed 99% similarity with E. palczewskii （Accession No. LC010048, LC009982, GQ497277）. In short, morphological and molecular approaches allowed us to identify the fungal pathogen as Erysiphe palczewskii. This is the first report of E. palczewskii infecting R. pseudoacacia in Shandong province. The results of this study will contribute to R. pseudoacacia powdery mildew control.

关 键 词：刺槐叶 白粉病菌 病原菌鉴定 Robinia 梢枯 蝶形花科 ERYSIPHE 叶片光合作用 病原菌形态 病原菌侵染 

分 类 号：S436.8[农业科学—农业昆虫与害虫防治]