Wang Hancheng, Li Yiting, Li Wenhong, Cai Liuti, Meng Jianyu, Xia Gen, Yin Junliang, Liu Xi
Guizhou Provincial Academician Workstation of Microbiology and Health, Guizhou Academy of Tobacco Science, Guiyang 550081, China.
College of Agriculture, Yangtze University, Jingzhou 434025, China.
Microorganisms. 2022 Sep 22;10(10):1890. doi: 10.3390/microorganisms10101890.
Tobacco ( L.), which creates jobs for 33 million people and contributes two trillion dollars' tax annually, is one of the most important economic plants globally. However, tobacco is seriously threatened by numerous diseases during production. Previously, the field survey of tobacco diseases was conducted in the Guizhou and Guangxi provinces, the two main tobacco-producing areas in China. A serious leaf spot disease, with a 22% to 35% incidence, was observed in farming plants. In order to determine the causal agents, we collected the disease samples and isolated the pathogenic fungi. The pathogen was identified as , based on the morphological characteristics and phylogenetic analysis. Pathogenicity tests showed that could induce tobacco leaf spot and blight. To our knowledge, this is the first report worldwide of causing leaf spots and stems on tobacco. Our study reveals the serious consequences of on tobacco filed production and provides information for future diagnosis and management of the disease.
烟草（L.）为3300万人创造就业机会，每年贡献两万亿美元税收，是全球最重要的经济作物之一。然而，烟草在生产过程中受到多种病害的严重威胁。此前，在中国两个主要烟草产区贵州省和广西壮族自治区进行了烟草病害的田间调查。在种植植株上观察到一种严重的叶斑病，发病率为22%至35%。为了确定致病因子，我们采集了病害样本并分离出致病真菌。基于形态特征和系统发育分析，该病原体被鉴定为 。致病性测试表明 可诱发烟草叶斑病和枯萎病。据我们所知，这是全球首次报道 引起烟草叶斑和茎部病害。我们的研究揭示了 对烟草田间生产的严重影响，并为未来该病害的诊断和管理提供了信息。
