{"title":"华南地区由高粱表球菌引起的 Desmodium triflorum 叶斑病","authors":"Ying Lu, Hui-ru Zhang, Wei-yi Zhang, Wei-huai Wu, Chun-ping He, Yan-qiong Liang, Xing Huang, Ke-xian Yi","doi":"10.1111/jph.13331","DOIUrl":null,"url":null,"abstract":"<p><i>Desmodium triflorum</i> is an important gramineous forage grown in tropical regions of China. In August 2022, a new leaf spot disease was observed on <i>D. triflorum</i> during a field survey at the base of the Chinese Academy of Tropical Agricultural Sciences, Hainan, China. The pathogen was isolated and identified using morphological examination and phylogeny based on multi-gene sequences analysis of the nuclear ribosomal internal transcribed spacer, the second largest RNA polymerase subunit (<i>RPB2</i>), and beta-tubulin genes. The isolates were identified as <i>Epicoccum sorghinum.</i> The pathogenicity of <i>E. sorghinum</i> on <i>D. triflorum</i> was validated fulfilling Koch's postulates, causing leaf spot disease. To the best of our knowledge, this is the first report of leaf spot disease on <i>D. triflorum</i> caused by <i>E. sorghinum</i> in China.</p>","PeriodicalId":16843,"journal":{"name":"Journal of Phytopathology","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2024-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Leaf spot of Desmodium triflorum caused by Epicoccum sorghinum in South China\",\"authors\":\"Ying Lu, Hui-ru Zhang, Wei-yi Zhang, Wei-huai Wu, Chun-ping He, Yan-qiong Liang, Xing Huang, Ke-xian Yi\",\"doi\":\"10.1111/jph.13331\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><i>Desmodium triflorum</i> is an important gramineous forage grown in tropical regions of China. In August 2022, a new leaf spot disease was observed on <i>D. triflorum</i> during a field survey at the base of the Chinese Academy of Tropical Agricultural Sciences, Hainan, China. The pathogen was isolated and identified using morphological examination and phylogeny based on multi-gene sequences analysis of the nuclear ribosomal internal transcribed spacer, the second largest RNA polymerase subunit (<i>RPB2</i>), and beta-tubulin genes. The isolates were identified as <i>Epicoccum sorghinum.</i> The pathogenicity of <i>E. sorghinum</i> on <i>D. triflorum</i> was validated fulfilling Koch's postulates, causing leaf spot disease. To the best of our knowledge, this is the first report of leaf spot disease on <i>D. triflorum</i> caused by <i>E. sorghinum</i> in China.</p>\",\"PeriodicalId\":16843,\"journal\":{\"name\":\"Journal of Phytopathology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2024-06-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Phytopathology\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1111/jph.13331\",\"RegionNum\":4,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"PLANT SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Phytopathology","FirstCategoryId":"97","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/jph.13331","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
引用次数: 0
摘要
Desmodium triflorum 是中国热带地区种植的一种重要禾本科牧草。2022 年 8 月，在中国热带农业科学院海南基地的一次田间调查中，观察到一种新的叶斑病。通过形态学检查和基于核糖体内部转录间隔区、第二大RNA聚合酶亚基（RPB2）和β-tubulin基因的多基因序列分析的系统发育，对病原进行了分离和鉴定。经鉴定，这些分离物为高粱伊皮球孢属（Epicoccum sorghinum）。根据科赫推论，高粱疫霉菌对三叶青 D. 的致病性得到了验证，它能引起叶斑病。据我们所知，这是中国首次报道 E. sorghinum 在三叶青上引起的叶斑病。
Leaf spot of Desmodium triflorum caused by Epicoccum sorghinum in South China
Desmodium triflorum is an important gramineous forage grown in tropical regions of China. In August 2022, a new leaf spot disease was observed on D. triflorum during a field survey at the base of the Chinese Academy of Tropical Agricultural Sciences, Hainan, China. The pathogen was isolated and identified using morphological examination and phylogeny based on multi-gene sequences analysis of the nuclear ribosomal internal transcribed spacer, the second largest RNA polymerase subunit (RPB2), and beta-tubulin genes. The isolates were identified as Epicoccum sorghinum. The pathogenicity of E. sorghinum on D. triflorum was validated fulfilling Koch's postulates, causing leaf spot disease. To the best of our knowledge, this is the first report of leaf spot disease on D. triflorum caused by E. sorghinum in China.
期刊介绍：
Journal of Phytopathology publishes original and review articles on all scientific aspects of applied phytopathology in agricultural and horticultural crops. Preference is given to contributions improving our understanding of the biotic and abiotic determinants of plant diseases, including epidemics and damage potential, as a basis for innovative disease management, modelling and forecasting. This includes practical aspects and the development of methods for disease diagnosis as well as infection bioassays.
Studies at the population, organism, physiological, biochemical and molecular genetic level are welcome. The journal scope comprises the pathology and epidemiology of plant diseases caused by microbial pathogens, viruses and nematodes.
Accepted papers should advance our conceptual knowledge of plant diseases, rather than presenting descriptive or screening data unrelated to phytopathological mechanisms or functions. Results from unrepeated experimental conditions or data with no or inappropriate statistical processing will not be considered. Authors are encouraged to look at past issues to ensure adherence to the standards of the journal.
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