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Occurrence of Gray Mold Caused by Botrytis cinerea on Rubus crataegifolius in Korea

Botrytis cinerea에 의한 산딸기 잿빛곰팡이병의 발생

  • Kim, Seung-Han (Gyeongbuk Agricultural Research and Extension Service) ;
  • Park, Sangkyu (School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University) ;
  • Lee, Seung-Yeol (School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University) ;
  • Kwak, Youn-Sig (Department of Plant Medicine, College of Agriculture and Life Science, Gyeongsang National University) ;
  • Jung, Hee-Young (School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University)
  • 김승한 (경상북도 농업기술원) ;
  • 박상규 (경북대학교 농업생명과학대학 응용생명과학부) ;
  • 이승열 (경북대학교 농업생명과학대학 응용생명과학부) ;
  • 곽연식 (경상대학교 농업생명과학대학 식물의학과) ;
  • 정희영 (경북대학교 농업생명과학대학 응용생명과학부)
  • Received : 2017.08.14
  • Accepted : 2017.08.24
  • Published : 2017.09.01

Abstract

The occurrence of gray mold on Rubus crataegifolius has recently been reported in Pohang, Gyeongbuk province, Korea. The initial symptom was the appearance of small brown spots on the leaves, and these lesions became later covered with a gray fungus as the disease progressed. A fungus was isolated from symptomatic leaves and incubated. Through morphological and phylogenetic analyses, the causal agent of the disease was identified to be Botrytis cinerea. The fungal isolate was then used to inoculate on the leaves of healthy plants to determine its pathogenicity as the causal agent of gray mold as per Koch's postulates. The inoculated leaves showed the same symptoms as the originally infected plant, and the fungal pathogen re-isolated from the lesions showed the same morphological characteristics as the original pathogen. This is the first report on the occurrence of gray mold on R. crataegifolius caused by B. cinerea in Korea.

최근 경북 포항의 산딸기 재배지역에서 잿빛곰팡이병 증상이 발생하였다. 초기에는 잎의 가장자리나 과경 부위에 갈색 반점이 나타나며 병이 진전되면 병반 부위가 확대되고 수침상으로 물러지면서 표면이 회색 곰팡이로 덮이는 것이 관찰되었다. 이러한 증상이 발생한 잎으로부터 병원균을 분리하고 균학적 특성을 조사하고 계통학적 분석을 수행하였다. 분석 결과 산딸기에서 발생한 잿빛곰팡이병의 병원균은 Botrytis cinerea로 확인되었으며, 건전한 산딸기 식물체를 대상으로 접종실험 한 결과 산딸기에 대한 병원성을 확인하였다. 지금까지 국내에서 B. cinerea에 의한 산딸기 잿빛곰팡이병이 보고되지 않았으므로 본 연구결과를 바탕으로 이 병을 국내 최초로 보고한다.

Keywords

References

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