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Sclerotinia sclerotiorum에 의한 갯기름나물 균핵병 발생
정원권(Won-Kwon Jung),임양숙(Yang-Sook Lim),김민기(Min-Ki Kim),김종수(Jong-Su Kim) 한국식물병리학회 2021 식물병연구 Vol.27 No.3
2020년 경상북도 포항군 연일읍의 갯기름나물 재배 농가포 장에서 잎에 작은 갈색 반점이 형성되고 잎끝부터 갈변되며 고 사하는 증상이 발생하였다. 균총은 흰색에서 연한 회색을 띠 었다. 균핵은 검은색의 구형 또는 타원형이었다. 자낭반은 컵모 양이며, 크기는 0.5‒0.9 cm이었다. 자낭은 원통형이고 크기는 75‒240×5.9‒17.3 μm이었다. 자낭포자는 무색의 타원형이었으며 크기는 8.4‒10.7×4.8‒5.8 μm이었다. Internal transcribed spacer (ITS) 1과 ITS4 영역의 염기서열 분석결과 Sclerotinia sclerotiorum과 100% 일치하였으며, 이와 같은 병원균의 균학 적 특징, 병원성 검정 결과 그리고 염기서열 분석결과를 바탕으 로 갯기름나물 잎반점과 마름 증상의 원인균은 S. sclerotiorum 으로 동정하였으며, 이 병을 갯기름나물 균핵병으로 명명할 것 을 제안한다. Sclerotinia rot was occurred on the leaf and stem of Peucedanum japonicum Thunb. in greenhouse field of Po- hang city of Gyeongbuk province in Korea. The typical symptom of the disease was light brown spot and tip- burn on infected leaves. The colony of the isolated fungus was white to light gray in color. Asci were cylindri- cal shape and 75‒240×5.9‒17.3 μm in size. Apothecia were cup-shaped with numerous asci and 0.5‒0.9 cm in size. Ascospores were aseptate and ellipsoid in shape, and 8.4‒10.7×4.8‒5.8 μm in size. Sclerotia formed on the plants and potato dextrose agar medium were globose to irregular in shape and black in color. Partial sequencing of rDNA of this isolate showed that it was 100% consistent with that of Sclerotinia sclerotiorum. It was confirmed that the same lesion was formed by reinoculating this pathogen on a healthy P. japonicum Thunb. and the same strain was isolated. This is the first report on the Sclerotinia rot of P. japonicum Thunb. caused by S. sclerotiorum in Korea.
석회보르도액 반복 사용이 토양과 인삼 체내 구리농축에 미치는 영향
정원권(Won-Kwon Jung),안덕종(Deok-Jong Ahn),최진국(Jin-Kook Choi),류태석(Tae-Suk Ryu),장명환(Myeong-Hwan Jang),권태룡(Tae-Ryong Kwon),박준홍(Jun-Hong Park),박상조(Sang-Jo Park) 한국농약과학회 2014 농약과학회지 Vol.18 No.4
Three type of Lime Bordeaux mixture (LBM) that has been used since 1800s for control plant disease are used for eco-friendly ginseng (Panax ginseng) disease control. But it was restricted the use in the crops cultivation in some countries of Europe recently, because there is a possibility that the copper component is concentrated in the soil and plants with using LBM containing copper. According to the concentration and number of LBM spraying treatment, it was investigated copper and other components in soil and ginseng root. In case of LBM sprayed 33 times for three years, copper concentration was increased up to 75.9 ppm in the soil. However copper concentration of ginseng root was increased with 9.9~23.0 mg/kg in comparison with 8.38~11.39 mg/kg at LBM non-treatment. It has shown that the copper components can be concentrated to in the soil if used continuously in the long term.