College of Agricultural and Life Sciences, Kyungpook National University | Laboratory of Forest Resources Management, Division of Agro–environmental Sciences, Department of Forest Environmental Sciences, Faculty of Agriculture, Kyushu University
College of Agricultural and Life Sciences, Kyungpook National University | Technogreen Co. Ltd | Laboratory of Forest Resources Management, Division of Agro–environmental Sciences, Department of Forest Environmental Sciences, Faculty of Agriculture, Kyushu University
College of Agricultural and Life Sciences, Kyungpook National University | Laboratory of Forest Resources Management, Division of Agro–environmental Sciences, Department of Forest Environmental Sciences, Faculty of Agriculture, Kyushu University
Laboratory of Forest Resources Management, Division of Agro–environmental Sciences, Department of Forest Environmental Sciences, Faculty of Agriculture, Kyushu University
九州大学大学院農学研究院環境農学部門 : 教授
In 2016, the typical symptoms of rust disease were observed on rough fleabane (Erigeron strigosus Muhl., Asteraceae) in Yongin–si, Korea. The diseased leaves were covered with yellow spots and chlorosis, and massive urediniospores covered the entire plant. Subsequently, a severe infection resulted in leaf blight and defoliation. To investigate the rust disease on rough fleabane, observations were conducted by using stereo microscopy, light microscopy, and scanning electron microscopy. The observations showed that the urediniospores were subglobose to polygonal and 20.4–32.3 × 14.7–23.6 μm in size and the teliospores were septate, obovoid to ellipsoid, and 72.1–85.1 × 21.0–24.0 μm in size. The phylogenetic analysis based on partial 28S rDNA sequences indicated that it was closely related to Coleosporium asterum (AF426241) isolated from Aster sp. Based on the results of the morphological and phylogenetic analyses, this is thought to be the first report of C. asterum as a causative agent of rust disease on rough fleabane in Korea.
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