Ma Guoping, Wang Heng, Qi Kai, Ma Liguo, Zhang Bo, Zhang Yueli, Jiang Hang, Wu Xuehong, Qi Junshan
Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Shandong Key Laboratory of Plant Virology, Jinan, China.
College of Life Sciences, Shandong Normal University, Jinan, China.
Front Microbiol. 2024 May 30;15:1405115. doi: 10.3389/fmicb.2024.1405115. eCollection 2024.
Fusarium crown rot (FCR) is one of the most important soilborne diseases affecting wheat production. To investigate the diversity of the pathogens causing this disease, 199 diseased wheat samples were collected from 13 cities in Shandong province. In total, 468 isolates were obtained, and from these isolates, 11 species were identified based on phylogenetic analyses with the translation elongation factor-1α (), RNA polymerase II largest subunit (), and RNA polymerase II second largest subunit () gene sequences. Of these isolates, 283 were identified as and the remaining isolates were identified as ( = 113), ( = 28), ( = 18), ( = 13), ( = 5), ( = 3), ( = 2), ( = 1), ( = 1), and ( = 1), suggesting that is the dominant pathogen of FCR of wheat in Shandong province. Pathogenicity tests demonstrated that all 11 species could cause typical symptoms of FCR on wheat seedlings. The results of the study indicate that a greater diversity of species can cause FCR of wheat in Shandong province than that has been previously reported. This is the first report in the world of , , and as pathogens causing FCR in wheat.
镰刀菌冠腐病（FCR）是影响小麦生产的最重要的土传病害之一。为了调查引起该病的病原菌的多样性，从山东省13个城市采集了199份患病小麦样本。共获得468个分离株，基于翻译延伸因子-1α（）、RNA聚合酶II最大亚基（）和RNA聚合酶II第二大亚基（）基因序列的系统发育分析，从这些分离株中鉴定出11个种。在这些分离株中，283个被鉴定为，其余分离株分别被鉴定为（=113）、（=28）、（=18）、（=13）、（=5）、（=3）、（=2）、（=1）、（=1）和（=1），这表明是山东省小麦镰刀菌冠腐病的优势病原菌。致病性测试表明，所有11个种均可在小麦幼苗上引起典型的镰刀菌冠腐病症状。研究结果表明，引起山东省小麦镰刀菌冠腐病的种的多样性比之前报道的要大。这是世界上首次报道、和作为引起小麦镰刀菌冠腐病的病原菌。
