Scholarlink

<p>This report documents the first identification of <i>Diplodia</i> species on atypical tree hosts, isolated from stem cankers. <i>Diplodia</i> is part of the Botryosphaeriaceae family, which includes plant pathogens that predominantly infect conifer species. However, <i>Diplodia</i> species are expanding their host range and geographic distribution worldwide. Typically associated with tip blight, the fungi described in this study were isolated from stem necroses in urban trees across various German cities, representing distinct geographical regions. <i>Diplodia mutila</i> was identified for the first time on <i>Carpinus betulus</i>, <i>Fagus sylvatica</i>, <i>Crataegus persimilis</i>, and <i>Platanus x hispanica</i>. Additionally, <i>Diplodia juglandis</i> was isolated from <i>Aesculus hippocastanum</i> and <i>Platanus x hispanica</i>, marking a first record for these hosts. <i>Diplodia seriata</i> was detected as a first finding&#xa0;on <i>Aesculus hippocastanum</i>, <i>Crataegus persimilis</i>, <i>Platanus</i> x <i>hispanica</i>, and <i>Ulmus</i> species, while <i>Diplodia malorum</i> was isolated for the first time from <i>Sorbus domestica</i>, and <i>Diplodia sapinea</i> on <i>Ulmus</i> species. The taxonomy of these fungi was verified through sequencing with multiple primers, including ITSu1/4, LSU/LR6, EF1a 526/1567R, Beta-tubulin T1/T22, and species-specific <i>Diplodia</i> primers where applicable. The pathogenicity of these fungi was confirmed by fulfilling Koch’s postulates. Stem infection trials were conducted on the corresponding tree hosts using the isolated fungi, and the resulting symptoms confirmed their pathogenic role. The growing incidence of <i>Diplodia</i> species on non-coniferous hosts in urban environments raises significant concerns not only for forestry but also for urban management. This underscores the need for further research and heightened awareness of these pathogens.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

First report of various Diplodia spp. causing stem cankers of Ulmus sp., Platanus x hispanica, Aesculus hippocastanum, Fagus sylvatica, Sorbus domestica, Carpinus betulus and Crataegus persimilis in central Europe

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年5月24日

查看全文
  • Kathrin Blumenstein,
  • Yasin Korkmaz

摘要

This report documents the first identification of Diplodia species on atypical tree hosts, isolated from stem cankers. Diplodia is part of the Botryosphaeriaceae family, which includes plant pathogens that predominantly infect conifer species. However, Diplodia species are expanding their host range and geographic distribution worldwide. Typically associated with tip blight, the fungi described in this study were isolated from stem necroses in urban trees across various German cities, representing distinct geographical regions. Diplodia mutila was identified for the first time on Carpinus betulus, Fagus sylvatica, Crataegus persimilis, and Platanus x hispanica. Additionally, Diplodia juglandis was isolated from Aesculus hippocastanum and Platanus x hispanica, marking a first record for these hosts. Diplodia seriata was detected as a first finding on Aesculus hippocastanum, Crataegus persimilis, Platanus x hispanica, and Ulmus species, while Diplodia malorum was isolated for the first time from Sorbus domestica, and Diplodia sapinea on Ulmus species. The taxonomy of these fungi was verified through sequencing with multiple primers, including ITSu1/4, LSU/LR6, EF1a 526/1567R, Beta-tubulin T1/T22, and species-specific Diplodia primers where applicable. The pathogenicity of these fungi was confirmed by fulfilling Koch’s postulates. Stem infection trials were conducted on the corresponding tree hosts using the isolated fungi, and the resulting symptoms confirmed their pathogenic role. The growing incidence of Diplodia species on non-coniferous hosts in urban environments raises significant concerns not only for forestry but also for urban management. This underscores the need for further research and heightened awareness of these pathogens.