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Gray Mold on Neofinetia falcata Caused by Botrytis cinerea in Korea

Botrytis cinerea에 의한 소엽풍란 잿빛곰팡이병

  • Han, Kyung-Sook (Horticultural & Herbal Crop Environment Division, National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Lee, Seong-Chan (Horticultural & Herbal Crop Environment Division, National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Lee, Jung-Sup (Horticultural & Herbal Crop Environment Division, National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Soh, Jae-Woo (Horticultural & Herbal Crop Environment Division, National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Park, Mi-Jeong (Horticultural & Herbal Crop Environment Division, National Institute of Horticultural & Herbal Science, Rural Development Administration)
  • 한경숙 (국립원예특작과학원 원예특작환경과) ;
  • 이성찬 (국립원예특작과학원 원예특작환경과) ;
  • 이중섭 (국립원예특작과학원 원예특작환경과) ;
  • 소재우 (국립원예특작과학원 원예특작환경과) ;
  • 박미정 (국립원예특작과학원 원예특작환경과)
  • Received : 2013.09.15
  • Accepted : 2013.11.05
  • Published : 2013.12.30

Abstract

In February 2010, the grayish fungus was found on Neofinetia falcata at Namsa-myeon, Yongin city, Gyeonggi-do, Korea. The symptoms start mainly on the leaves and stems, and the infected stems were rotten. Many conidia appeared on the lesions under humid condition. Colonies were grayish brown color and sclerotial formation was observed on potato dextrose agar (PDA). Conidia were mostly ellipsoidal to ovoid in shape, hyaline, one-celled, and $5.3-16.5{\times}3.8-11.0{\mu}m$ in size. Based on morphological characteristics and pathogenicity, the causal fungus was identified as Botrytis cinerea Pers. This is the first report of gray mold on N. falcata caused by B. cinerea in Korea.

2010년 2월에 경기도 용인시 남사면의 소엽풍란 재배농가에서 소엽풍란의 잎과 줄기가 갈색으로 변하면서 말라죽는 피해증상이 발생하였다. 이병 식물체 표면에는 잿빛을 띤 곰팡이가 형성되어 있었으며, 주변 환경이 습할수록 병반 상에 분생포자가 더 많이 만들어지는 경향을 보였다. 균학적 특징으로 분생포자는 난형 및 타원형이고, 무색이며, 단세포로서 크기는 $5.3-16.5{\times}3.8-11.0{\mu}m$이었으며, 갈색의 분생포자경과 검정색 균핵을 형성하였다. 이러한 형태적 특성을 근거로 하여 소엽풍란의 병원균을 Botrytis cinerea로 동정하였으며, 병원성을 검정한 결과 잿빛곰팡이병의 발생을 확인할 수 있었다. 이와 같이 소엽풍란에서 발생한 병을 Botrytis cinerea에 의한 잿빛곰팡이병으로 확인하였고, 본 병을 소엽풍란 잿빛곰팡이병으로 명명하며 우리나라에서 처음으로 보고한다.

Keywords

References

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