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Sclerotium rolfsii에 의한 양파 흰비단병

Sclerotium Rot of Onion Caused by Sclerotium rolfsii

  • Kwon, Jin-Hyeuk (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • Kim, Hee-Dae (Gyeongsangnam-do Agricultural Research and Extension Services) ;
  • Choi, Ok-Hee (Department of Applied Biology, Gyeongsang National University) ;
  • Kwak, Youn-Sig (Department of Applied Biology, Gyeongsang National University) ;
  • Lee, Yong-Hwan (National Academy of Agricultural Science, RDA) ;
  • Shim, Hong-Sik (National Academy of Agricultural Science, RDA)
  • 투고 : 2011.06.09
  • 심사 : 2011.08.08
  • 발행 : 2011.08.31

초록

경남 창녕군 대합면 양파 재배농가 포장에서 Sclerotium rolfsii에 의한 양파 흰비단병 증상이 발생되었다. 병징은 인경과 줄기 및 잎이 수침상으로 물러지고 썩으면서 시들어 말라 죽고, 병반부와 지제부의 토양 표면에 흰색의 곰팡이가 발생하며 갈색의 작고 둥근 균핵을 형성하였다. 감자한천배지에서 균총은 흰색이며 배양기간이 경과됨에 따라 갈색의 작고 둥근 균핵을 많이 형성하였다. 균핵의 크기는 1-3 mm이며 균사의 폭은 4-9 ${\mu}m$였다. 균사생육과 균핵 형성 적온은 $30^{\circ}C$었다. 균사특유의 clamp connection이 관찰되었다. 양파에서 발생한 병징과 병원균의 균학적 특징, 그리고 ITS rDNA 염기서열 비교분석 결과, 이 병을 S. rolfsii에 의한 양파 흰비단병으로 명명하고자 제안한다.

The sclerotium rot of onion (Allium cepa L.) was occurred sporadically in the farmer's fields at Daehap, Changnyeong in Korea. The typical symptom was water-soaking on the bulb, stem and leaves and then rotting, wilting, blighting and the infected plants eventually were rotted and died. The sclerotia were globoid, 1-3 mm, and white to brown. The optimum temperature for mycelial growth and sclerotial formation on PDA was $30^{\circ}C$. The hyphal width was 4-9 ${\mu}m$. The typical clamp connections were observed in the hyphae of the fungus grown on PDA. On the basis of mycological characteristics, ITS rDNA sequence analysis, and pathogenicity, this fungus was identified as Sclerotium rolfsii Saccardo. To our knowledges, this is the first report of sclerotium rot on onion caused by S. rolfsii in Korea.

키워드

참고문헌

  1. 한국식물병리학회. 2009. 한국식물병명목록. 제5판 853 pp.
  2. Kwon, J. H., Chi, T. T. P. and Kim, J. W. 2010. Frist report of stem rot on Hosta plantaginea caused by Sclerotium rolfsii. Plant Pathol. J. 26: 297. https://doi.org/10.5423/PPJ.2010.26.3.297
  3. Mordue, J. E. M. 1974. Sclerotium rolfsii. CMI descriptions of pathogenic fungi and bacteria. No. 410. Commonwealth Mycological Institute, Kew, Surrey, England.

피인용 문헌

  1. The Comparison of Resistance of Sweet Potato Cultivars to Sclerotium Rot Caused by Sclerotium rolfsii vol.20, pp.2, 2014, https://doi.org/10.5423/RPD.2014.20.2.126
  2. Stem Rot of Sweet Potato (Ipomoea batatas) Caused by Sclerotium rolfsii in Korea vol.19, pp.2, 2013, https://doi.org/10.5423/RPD.2013.19.2.118
  3. Sclerotium Rot of Sponge Gourd Caused by Sclerotium rolfsii vol.18, pp.1, 2012, https://doi.org/10.5423/RPD.2012.18.1.054