Botrytis cinerea에 의한 페페로미아 잿빛곰팡이병 = Gray Mold on Peperomia Caused by Botrytis cinerea in Korea.

국문 초록 (Abstract)

전북 전주시 화원에서 재배중인 페페로미아 화분 재배에서 Botrytis cinerea에 의한 잿빛곰팡이병이 발생하였다. 주요 병징은 잎과 잎자루에 수침상, 변색, 고사의 병징이 발생하였다. 병원균 접종 3일후 잎과 잎자루에 수침증상이 나타났으며, 7일부터 병반부위에 많은 쟂빛색의 분생포자를 형성하였다. 다습조건에서 2주가 경과하면 병반부가 물러지고 부패되어 고사하였다. PDA 배지에서 균총은 초기에는 회갈색으로 생장하여 20일경에는 편편하고, 부정형의 균핵을 형성하였다. 단 포자의 분생포자는 난형 또는 타원형의 형태이고, 분생포자의 색은 무색 또는 옅은 갈색이고, 크기는 6~15 × 4~10 μm이었다. 페페로미아 쟂빛곰팡이병의 병원균은 병징과 병원성, 병원균의 균학적 특징을 종합한 결과 B. cinerea으로 확인되었으며, 페페로미아 잿빛곰팡이병으로 명명한다.

다국어 초록 (Multilingual Abstract)

Although Peperomia (Peperomia argyreia) is native to South America, it is getting popular in Korea because Peperomia is a delightful and easy-to-grow plant. Gray mold caused by Botrytis cinerea occurred on Peperomia in flower shop in Jeonju, Korea. Disease symptoms first appeared as brown, water-soaked spots and later developed into brown rot on the leaves and petioles of infected plants. This diseased plant wilted and eventually died. The disease agent was isolated from symptomatic leaves and petioles on PDA for fungal morphological study and confirmed its pathogenicity based on Koch`s postulates. Many grayish brown conidia spores were observed on the lesions under humid conditions and numerous sclerotia were formed on PDA media. From morphological study, conidia were one celled, were mostly ellipsoidal or ovoid in shape, were colorless to pale brown in color, and were 6~15 × 4~10 μm in size. According to pathogenicity and morphological characteristics of the isolated fungus, the causal fungus was identified as B. cinerea and to our knowledge, this is the first report of Gray mold of Peperomia by B. cinerea in Korea. Therefore, “Gray mold of Peperomia” was proposed to the name of this disease.