Korean Journal of Mycology (Kor. J. Mycol.)
Youn-Gi Moon 1, Ki-Jin Park 1, and Wan-Gyu Kim 2*
1Wild Vegetable Research Institute, Gangwondo Agricultural Research and Extension Services,
Pyeongchang 25300, Korea
2Global Agro-Consulting Corporation, Suwon 16614, Korea
Correspondence to wgkim5121@naver.com
Korean Journal of Mycology (Kor J Mycol) September, 2021, 49(3):413-416.
https://doi.org/10.4489/KJM.20210039
Accepted: September 23, 2021; Revised: September 18, 2021; Received: August 30, 2021
Published: September, 2021.
© 2021 THE KOREAN SOCIETY OF MYCOLOGY.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
In July 2019, damping-off symptoms of young Fischer’s ragwort (Ligularia fischeri) plants were observed in four vinyl greenhouses of a farmer located in Taebaek, Gangwon Province, Korea. This disease occurred in 20-30% of plants in the vinyl greenhouses investigated. Nine isolates of Rhizoctonia sp. were obtained from the diseased plants. All the isolates were identified as Rhizoctonia solani AG-2-2 (ⅢB), based on morphological, cultural characteristics, and anastomosis test. Three isolates were used for artificial inoculation test on Fischer’s ragwort. Pathogenicity of these isolates was confirmed on the plants with the inoculation tests. Damping-off symptoms observed on the inoculated plants were similar to those observed in the diseased plants in the vinyl greenhouses. This is the first report of R. solani AG-2-2 (ⅢB) being the causative agent in damping-off in Fischer’s ragwort.
Anastomosis, Damping-off, Fischer’s ragwort, Rhizoctonia solani AG-2-2 (ⅢB)