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Occurrence of Sclerotinia Rot by Sclerotinia minor on Aster yomena in Korea

한국에서 Sclerotinia minor에 의한 쑥부쟁이 균핵병 발생

  • Lee, Sang Yeob (Agricultural Microbiology Division, National Academy of Agricultural Sciences) ;
  • Choi, Hyo-Won (Crop Protection Division, National Academy of Agricultural Sciences) ;
  • Weon, Hang Yeon (Agricultural Microbiology Division, National Academy of Agricultural Sciences) ;
  • Han, Ji Hee (Agricultural Microbiology Division, National Academy of Agricultural Sciences) ;
  • Kim, Dayeon (Agricultural Microbiology Division, National Academy of Agricultural Sciences) ;
  • Ahn, Sungho (Agricultural Microbiology Division, National Academy of Agricultural Sciences)
  • 이상엽 (국립농업과학원 농업미생물과) ;
  • 최효원 (국립농업과학원 작물보호과) ;
  • 원항연 (국립농업과학원 농업미생물과) ;
  • 한지희 (국립농업과학원 농업미생물과) ;
  • 김다연 (국립농업과학원 농업미생물과) ;
  • 안성호 (국립농업과학원 농업미생물과)
  • Received : 2018.04.09
  • Accepted : 2018.05.28
  • Published : 2018.06.01

Abstract

Sclerotinia rot symptoms were frequently found on the stems of Aster yomena in the Gurye region of Korea in April 2016. The symptom, watery soft rot, mainly appeared on the stems, and severely infected plants blighted. White mycelia spread over the stems of the infected plants and the soil surface. Small black sclerotia formed on the plant lesions and inside the diseased stems. Incidence of the disease was as high as 20~80% in the A. yomena fields. Based on the morphological and molecular characteristics of the isolates, the fungi were identified as Sclerotinia minor. This is the first report of Sclerotinia rot caused by Sclerotinia minor on A. yomena in Korea.

2016년 4월에 한국 구례지역에서 재배하는 쑥부쟁이 줄기에 균핵병이 발생하였다. 그 병징은 주로 줄기에 발생하여 물러 썩어서 심하면 식물체가 마른다. 흰색 균사가 감염된 식물체 줄기와 땅 표면에 퍼져있으며, 병든 줄기 내와 병 발생 부위에 작은 흑색 균핵을 형성하였다. 균핵병은 쑥부쟁이 재배 포장에서 20~80% 높게 발생하였다. 분리균의 형태적 특성 및 유전자 분석에 의하여 이 균은 Sclerotinia minor로 동정하였다. 한국에서 쑥부쟁이에서 분리한 Sclerotinia minor에 의한 균핵병 발생을 처음으로 보고한다.

Keywords

References

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