First Report of Leaf Spot in Fischer’s Ragwort Caused by Didymella ligulariae
During disease surveys from 2019 to 2021, the authors frequently encountered leaf spot symptoms on Fischer’s ragwort plants growing at fields at six locations of Gangwon Province, Korea. The symptoms displayed brown to dark brown, circular or irregular spots on the plant leaves. The disease surveys...
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Published in | Sigmulbyeong yeon'gu Vol. 29; no. 1; pp. 60 - 63 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
한국식물병리학회
31.03.2023
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Abstract | During disease surveys from 2019 to 2021, the authors frequently encountered leaf spot symptoms on Fischer’s ragwort plants growing at fields at six locations of Gangwon Province, Korea. The symptoms displayed brown to dark brown, circular or irregular spots on the plant leaves. The disease surveys at the six locations revealed 1–90% of diseased leaves of the plants. Phoma sp. was dominantly isolated from the diseased leaf lesions. Seven single-spore isolates of the fungus were selected and identified as Didymella ligulariae by investigation of their cultural, morphological, and molecular characteristics. Artificial inoculation test to Fischer’s ragwort leaves was conducted with three isolates of D. ligulariae. The inoculation test revealed that the tested isolates cause leaf spot symptoms in the plants similar to the natural ones. The fungal pathogen has never been reported to cause leaf spot in Fischer’s ragwort. Leaf spot of Fischer’s ragwort caused by D. ligulariae is first reported in this study. |
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AbstractList | During disease surveys from 2019 to 2021, the authors frequently encountered leaf spot symptoms on Fischer’s ragwort plants growing at fields at six locations of Gangwon Province, Korea. The symptoms displayed brown to dark brown, circular or irregular spots on the plant leaves. The disease surveys at the six locations revealed 1–90% of diseased leaves of the plants. Phoma sp. was dominantly isolated from the diseased leaf lesions. Seven single-spore isolates of the fungus were selected and identified as Didymella ligulariae by investigation of their cultural, morphological, and molecular characteristics. Artificial inoculation test to Fischer’s ragwort leaves was conducted with three isolates of D. ligulariae. The inoculation test revealed that the tested isolates cause leaf spot symptoms in the plants similar to the natural ones. The fungal pathogen has never been reported to cause leaf spot in Fischer’s ragwort. Leaf spot of Fischer’s ragwort caused by D. ligulariae is first reported in this study. |
Author | Gyo-Bin Lee Weon-Dae Cho Hong-Sik Shim Wan-Gyu Kim |
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Cites_doi | 10.1016/j.simyco.2015.10.003 10.1016/s0953-7562(09)80409-7 10.1111/j.1439-0507.1998.tb00321.x 10.3114/sim.2022.101.06 10.3114/sim.2010.65.01 10.1093/nar/gkh340 10.1016/j.ympev.2007.03.011 10.1093/molbev/msw054 10.1128/jb.172.8.4238-4246.1990 |
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Keywords | Fischer’s ragwort Didymella ligulariae Ligularia fischeri Leaf spot |
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References | ref13 ref12 ref14 Park (ref10) 2021 Liu (ref9) 1999 ref1 Boerema (ref2) 2004 Lee (ref8) 2021 Woudenberg (ref16) 2009 ref7 (ref11) 2022 ref4 ref3 ref6 ref5 White (ref15) 1990 |
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Title | First Report of Leaf Spot in Fischer’s Ragwort Caused by Didymella ligulariae |
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