Research in Plant Disease (식물병연구)

The Korean Society of Plant Pathology (한국식물병리학회)
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Damping-off of Edible Aster Caused by Rhizoctonia solani AG-4

  • Youn-Gi, Moon (Wild Vegetable Research Institute, Gangwondo Agricultural Research and Extension Services) ;
  • Se-Won, Kim (Wild Vegetable Research Institute, Gangwondo Agricultural Research and Extension Services) ;
  • Ki-Jin, Park (Wild Vegetable Research Institute, Gangwondo Agricultural Research and Extension Services) ;
  • Wan-Gyu, Kim (Global Agro-Consulting Corporation)
  • Received : 2022.08.28
  • Accepted : 2022.11.22
  • Published : 2022.12.31
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Abstract

In August 2021, we surveyed diseases of wild vegetables grown in Taebaek, Gangwon Province, Korea. During the disease survey, we observed severe damping-off symptoms in young edible aster (Aster scaber) plants in a vinyl greenhouse investigated. The incidence of the disease in the plants ranged from 5% to 20%. Diseased plants of edible aster were collected from the vinyl greenhouse, and fungi were isolated from petiole lesions of the diseased plants. Rhizoctonia sp. was consistently isolated from the petiole lesions. We examined morphological characteristics and anastomosis groups of nine Rhizoctonia sp. isolates obtained from the petiole lesions. The examination results revealed that all the isolates corresponded to Rhizoctonia solani AG-4 based on the morphological characteristics and anastomosis test. Three isolates of R. solani AG-4 were tested for their pathogenicity on edible aster plants by artificial inoculation. Inoculation tests showed that the tested isolates caused damping-off symptoms on the inoculated plants. The induced symptoms were similar to those observed in the vinyl greenhouse investigated. Damping-off of edible aster caused by R. solani AG-4 is first reported in this study.

Keywords

Acknowledgement

This study was supported by a research grant (PJ014507012020) from the Rural Development Administration, Korea and a research grant (LP0018752021) from the Wild Vegetable Research Institute, Gangwondo Agricultural Research and Extension Services, Korea.

References

  1. Kim, W. G. 1996. Pathogenicity of anastomosis groups and cultural types of Rhizoctonia solani isolates on crops. Korean J. Plant Pathol. 12: 21-32.
  2. Kim, W.-G., Cho, W.-D. and Lee, Y.-H. 1994. Anastomosis groups and cultural characteristics of Rhizoctonia solani isolates from crops in Korea. Korean J. Mycol. 22: 309-324.
  3. Kim, W.-G., Lee, G.-B., Shim, H.-S. and Cho, W.-D. 2022. Stem rot of bonnet bellflower caused by Rhizoctonia solani AG-4. Korean J. Mycol. 50: 61-64.
  4. Parmeter, J. R. Jr. and Whitney, H. S. 1970. Taxonomy and nomenclature of the imperfect state. In: Rhizoctonia solani: Biology and Pathology, ed. by J. R. Jr. Parmeter, pp. 7-19. University of California Press, Berkeley, CA, USA.
  5. Plants of the World Online. 2022. Aster scaber Thunb. Royal Botanic Garden, Kew. URL https://powo.science.kew.org/ [22 August 2022].
  6. Sneh, B., Burpee, L. and Ogoshi, A. 1991. Identification of Rhizoctonia Species. APS Press, St. Paul, MN, USA. 133 pp.