Jeon Hosung, Yang Jung-Wook, Lee Noh-Hyun, Shin Donghwan, Min Donggyu, Lee Nahyun, Baek Seul Gi, Nah Ju-Young, Kim Boeun, Lee Mi-Jeong, Kang In-Jeong, Kim Yul-Ho, Kim Kwang-Hyung, Son Hokyoung, Lee Theresa
Seoul National University, Department of Agricultural Biotechnology, Gwanak-gu, Seoul, Korea (the Republic of);
National Institute of Crop Science Muan, Division of Crop Cultivation and Environment Research, 54seohoro, suwon, Kyeonggido, Korea (the Republic of), 16613;
Plant Dis. 2025 Mar 25. doi: 10.1094/PDIS-02-25-0282-SR.
Fusarium head blight (FHB), caused by species complex, is one of the most destructive plant diseases affecting wheat and barley globally. However, effective management methods remain elusive because of limited availability of resistant cultivars. Accordingly, systematic surveillance is one of the key strategies, allowing for prompt responses to emerging outbreaks and supporting the establishment of preventive guidelines for future occurrences. FHB severity in the southern region of the Republic of Korea in 2024 following an outbreak was systematically monitored. A total of 100 wheat ( = 43) and barley ( = 57) fields were assessed for FHB indices and mycotoxin concentrations. A geographical breakdown showed that several regions were heavily impacted by the FHB outbreak, with elevated disease severity exceeding 50%. Furthermore, spatiotemporal analysis of the FHB outbreak revealed relatively high disease severity in 2024, ranging from 3- to 6-fold compared to the previous years, likely influenced by climatic factors. A strong correlation of FHB severity and nivalenol concentrations was also observed, with concerning levels that underscore potential risk for future FHB outbreaks. These findings provide valuable insights into the epidemiology of FHB in the Republic of Korea and will help guide the development of more effective management strategies for FHB and its associated mycotoxins.
由镰刀菌复合体引起的小麦赤霉病（FHB）是全球影响小麦和大麦的最具破坏性的植物病害之一。然而，由于抗性品种有限，有效的管理方法仍然难以捉摸。因此，系统监测是关键策略之一，能够对新出现的疫情迅速做出反应，并为未来疫情的预防指南制定提供支持。对2024年韩国南部地区爆发疫情后的小麦赤霉病严重程度进行了系统监测。共对100个小麦田（n = 43）和大麦田（n = 57）的小麦赤霉病指数和霉菌毒素浓度进行了评估。地域分析表明，几个地区受到小麦赤霉病疫情的严重影响，病害严重程度超过50%。此外，对小麦赤霉病疫情的时空分析显示，2024年病害严重程度相对较高，与前几年相比高出3至6倍，这可能受气候因素影响。还观察到小麦赤霉病严重程度与雪腐镰刀菌烯醇浓度之间存在强相关性，令人担忧的水平凸显了未来小麦赤霉病疫情的潜在风险。这些发现为韩国小麦赤霉病的流行病学提供了有价值的见解，并将有助于指导制定更有效的小麦赤霉病及其相关霉菌毒素管理策略。
