• 한국균학회지
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• 제27권2호통권89호
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• pp.158-163
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• 1999

네 종의 관상수목에서 흰가루병이 발생하였는데, 이들은 지금까지 한국에서 보고되지 않았으므로 발병양상을 기록하고 병원균을 동정하였다. 노린재나무 흰가루병은 그늘에서 자란 잎에서만 약하게 발생하였으므로 그리 문제되지는 않을 것으로 생각되는데, 병원균은 Microsphaera nomurae U. Braun으로 동정되었다. 꽃산딸나무 흰가루병은 그리 심하지 않았으나 묘포에서의 대발생이 우려되었는데, 병원균은 Microsphaera pulchra Cooke & Peck으로 동정되었다. 야광나무 흰가루병은 묘포에서 어린잎과 어린줄기에 주로 발생하였는데, 병원균은 Podosphaera leucotricha (Ellis & Everh.) Salmon으로 동정되었다. 왕느릅나무 흰가루병은 주로 가을철에 발생하였으며 2차 생장한 어린 가지에서 특히 심하였는데, 병원균은 Uncinula kenjiana Homma로 동정되었다.

• 한국균학회지
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• 제22권4호
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• pp.355-365
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• 1994

1991년부터 1994년까지 우리나라에서 흰가루병균을 침해하는 중복기생균의 발생에 관한 전면적인 조사를 실시하였다. 그 결과 총 1070점의 흰가루병 이병식물을 채집하였는데 이중 92점의 시료에서 중복기생균의 존재가 확인되었다. 이중 6점의 시료를 침해한 중복기생균은 동정되지 않았으나 나머지 86점의 시료에서는 모두 Ampelomyces quisqualis가 중복기생균으로 확인되었다. 이는 중복기생균의 흰가루병균 침해가 자연계에서 흔한 현상임을 나타내주었고 우리나라에서도 A. quisqualis가 가장 흔한 중복기생균임을 나타내 주었다. 1992년 채집시료 32점 중 24점에서 순수분리된 A. quisqualis균주는 모두 오이 흰가루병균인 Sphaerotheca fusca에 병원성을 나타내었다.

• 한국균학회지
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• 제50권2호
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• pp.125-130
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• 2022

The powdery mildew found on Magnolia kobus was recorded as Microsphaera alni for the first time in Korea in 1975. After splitting M. alni into several distinct species, this mildew was regarded as Microsphaera magnifica, now Erysiphe magnifica. Since E. magnifica is known to be a North American species, the powdery mildew found on M. kobus in Korea was studied to clarify its identity. Based on morphological characteristics and sequencing results of the internal transcribed spacer and large subunit rDNA gene, the powdery mildew found on M. kobus in Korea was identified as Erysiphe magnoliicola.

• The Plant Pathology Journal
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• 제25권3호
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• pp.299-301
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• 2009

Powdery mildew symptoms were frequently on plants of goat's-beard (Aruncus dioicus var. kamtschaticus) found cultivated in the island Ulleungdo in June 2008. The symptoms appeared as powdery mycelial colonies and dark brown cleistothecia on leaves, petioles, stems and budding flowers of the plant. Incidence of the disease was as high as 50-80% in the goat's-beard fields. Specimens of the diseased plants were collected and examined for morphological characteristics of the causal fungus. On the basis of morphological characteristics of the conidial stage and the teleomorph, the fungus was identified as Podosphaera ferruginea. This is the first report of goat's-beard powdery mildew caused by Podosphaera ferruginea in Korea.

• 한국균학회지
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• 제27권3호통권90호
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• pp.234-236
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• 1999

한국에서 다알리아의 흰가루병균으로 Sphaerotheca fuliginea가 기록되었다. 그러나, 1993년 이후본인들이 채집한 6개 시료의 다알리아 흰가루병균은 모두 분생포자에 fibrosin체를 함유하지 않으며 분생포자경에 형성된 외선이 능상(陵狀)이었다. 이러한 특징으로 보아 한국에서 다알리아 흰가루병균은 Erysiphe cichoracearum이 확실하다. 한편, 독립된 화분에 심겨진 1그루의 다알리아에서 S. fusca(=S. fuliginea s. lat.)가 흰가루병균으로 동정되었지만, 발병양상으로 보아 우연한 감염으로 판단된다. 따라서 한국에는 2종의 다알리아 흰가루병균이 분포하지만 E. cichoracearum이 다알리아 흰가루병의 주요 원인균이다.

• The Plant Pathology Journal
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• 제26권4호
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• pp.360-366
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• 2010

In the course of a searhing environmental friendly antifungal compounds, we found that mixture of methyl esters of fatty acids obtained from soybean oil had potent control efficacy against barley powdery mildew (Blumeria graminis f. sp. hordei). In this study, ten alkyl fatty acid esters (AFAEs) were tested for in vivo antifungal activity against five plant diseases such as rice blast, rice sheath blight, tomato gray mold, tomato late blight and barley powdery mildew. Some AFAEs showed the most control efficacy against barley powdery mildew among the tested plant diseases. By 5-hr protective and 1-day curative applications, six AFAEs ($3,000\;{\mu}g/ml$), including methyl and ethyl palmitates, methyl and ethyl oleates, methyl linoleate, and methyl linolenate demonstrated both curative and protective activities against barley powdery mildew. In contrary, methyl laurate strongly controlled the development of powdery mildew on barley plants by curative treatment at a concentration of $333\;{\mu}g/ml$, but did not show protective activity even at $3,000\;{\mu}g/ml$. Under greenhouse conditions, the seven AFAEs ($1,000\;{\mu}g/ml$) except for methyl and ethyl stearates, and methyl caprylate also effectively controlled cucumber powdery mildew caused by Podosphaera xanthii. Among them, methyl and ethyl palmitates ($333\;{\mu}g/ml$) represented the most control activity of more than 68% against the disease. The results are the first report on the antifungal activity of methyl and ethyl esters of fatty acids against plant pathogenic fungi.

• The Plant Pathology Journal
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• 제27권1호
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• pp.85-88
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• 2011

Podosphaera fusca (syn. Sphaerotheca fusca, S. fuliginea) is a causal agent of powdery mildew infections on Zinnia elegans, and has been documented in Korea since 1967. An outbreak involving about 1,000 plants in October 2008, in Yangpyeong, Korea, was caused by Golovinomyces cichoracearum. Further surveys of zinnia powdery mildew from 2008-2010 confirmed the widespread occurrence of Zinnia-Golovinomyces association in Korea. Chasmothecia of this fungus have not been found on Z. elegans in Korea. Analysis of internal transcribed spacer rDNA from five Korean collections confirmed the powdery mildew as G. cichoracearum. Comparison with the those from GenBank revealed 100% identity with sequences from zinnia powdery mildew, forming a monophyletic clade with 100% bootstrap support, and with those of G. cichoracearum parasitic on the hosts belonging to the tribe Heliantheae of the family Asteraceae.

• 식물병연구
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• 제28권4호
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• pp.248-251
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• 2022

2022년 10월 충청남도 예산군(36°40'12.7"N, 126°51'36.4"E)에서 좀돌팥 흰가루병을 조사하였다. 병징은 주로 잎의 앞면에 발생하였으며 뒷면에는 흰가루병이 약하게 발병하였다. 흰가루병의 자낭구는 잎의 뒷면에서 확인하였다. 흰가루병균 무성세대 및 유성세대의 형태적 특징과 더불어 internal transcribed spacer rDNA, 28S large subunit 염기서열을 계통분석한 결과, 흰가루병균은 Podosphaera xanthii로 동정되었다. 이는 한국에서 Podosphaera xanthii에 의한 좀돌팥 흰가루병을 처음으로 보고한다.

• 한국식물병리학회지
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• 제14권2호
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• pp.186-187
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• 1998

Yellow spot or blotch symptoms were observed on the upper surface of eggplant (Solanum melongena. cv: Cheonryang) leaves in a commerical vinyl-house of Hapchon-gun, Kyongnam, Korea. We identified Leveillula taurica(L v.) Arnaud as a pathogen causing powdery mildew of eggplant which was observed newly in Korea. The fungal conidia from eggplant leaves were reinoculated to eggplant, tomato and pepper to confirm the same disease as the symptomatology and morphology of the pathogen.

• 한국균학회지
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• 제51권4호
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• pp.307-311
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• 2023

Powdery mildew anamorphs were collected from Orixa japonica (Rutaceae) in Korea. Based on the morphology and molecular phylogeny derived from the internal transcribed spacer regions and the large subunit gene of the rDNA, the fungus was identified as Erysiphe orixae. This powdery mildew species has been known to be endemic to Japan. This is the first report on E. orixae in Korea.