• 한국균학회지
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• 제52권2호
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• pp.109-114
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• 2024

Anthracnose fruit rot (AFR) has been observed in greenhouses during the harvesting period in the Chungnam Province of South Korea. Fruits infected inside the greenhouse show black or brown spots, orange conidial masses and in some areas of the infected parts, white fungal growths are visible. The size of these spots gradually expands, leading to the necrosis of the fruits and flowers. Three isolates were obtained from infected fruits and identified as strains of the Colletotrichum acutatum species complex based on morphological characteristics. Multilocus sequence analysis of actin, chitin synthase, glyceraldehyde-3-phosphate dehydrogenase genes, and internal transcribed spacer rDNA regions revealed that the isolates belong to a monophyletic group with the type strain of C. nymphaeae. This is the first time C. nymphaeae has been confirmed in strawberry fruit in Korea.

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
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• pp.25-27
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• 2003

Since 1993, a total of 50 problematic plant diseases unrecorded in Korea were surveyed in Gyeongnam province. Totally 34 new host plants to corresponding pathogens investigated in this study were 5 fruit trees, 9 vegetables, 12 ornamental plants, 3 industrial crops, and 5 medicinal plants. Among the newly recorded fruit tree diseases, fruit rot of pomegranate caused by Coniella granati and Rhizopus soft rot of peach caused by Rhizopus nigricans damaged severely showing 65.5% and 82.4% infection rate. Among the vegetable diseases, corynespora leaf spot of pepper caused by Corynespora cassiicola and the crown gall of pepper caused by Agrobacterium tumefaciens, powdery mildew of tomato caused by Oidiopsis taurica were the most severe revealing 47.6%, 84.7%, and 54.5% infection rate in heavily infected fields, respectively. In ornamental plants, collar rot of lily caused by Sclerotium rolfsii, gray mold of primula caused by Botrytis cinerea, soot leaf blight of dendrobium caused by Pseudocercospora dendrobium, sclerotinia rot of obedient plant caused by Sclerotinia sclerotiorum showed 32.7 to 64.8% disease incidence. On three industrial plants such as sword bean, broad bean, and cowpea, eight diseases were firstly found in this study. Among the diseases occurring on broad bean, rust caused by Uromyces viciae-fabae and red spot caused by Botrytis fabae were the major limiting factor for the cultivation of the plant showing over 64% infection rate in fields. In medicinal plants, anthracnose of safflower caused by Collectotrichum acutatum was considered the most severe disease on the plant and followed by collar rot caused by Sclerotium rolfsii.(중략)

• Horticulture, Environment, and Biotechnology : HEB
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• 제59권6호
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• pp.847-856
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• 2018

This research aimed to evaluate the effectiveness of hot water ($43-53^{\circ}C{\cdot}5min^{-1}$; $47^{\circ}C{\cdot}2-6min^{-1}$), 1-methylcyclopropene (1-MCP) at $50-300nL\;L^{-1}$ and a combination of hot water ($47/49^{\circ}C{\cdot}5min^{-1}$) and phosphite $40%\;P_2O_5+20%\;K_2O$;$40%\;P_2O_5+10%\;Zn$) in anthracnose control and the effect on fruit quality [fresh weight loss (FWL-%); pH, total soluble solids ($TSS-^{\circ}Brix$), and titratable acidity (TA = % citric acid (CA)] of passion fruit ( Passiflora edulis f. flavicarpa ) at the postharvest stage. When the fruits were in the stage of 0% dehydration and fully yellow peels, they were disinfested and inoculated with Colletotrichum gloeosporioides. They were then subjected to the above mentioned treatments; this was followed by incubation for 120 h. The diameter of the disease lesions was monitored daily. After the incubation, a physico-chemical analysis was performed. Hot-water treatment resulted in disease reduction at 47 and $49^{\circ}C$ for 4 and 5 min. The combination of hot-water treatment at $47^{\circ}C$ (4 or 5 min) and application of the phosphite of K or Zn significantly reduced disease severity in fruits. The 1-MCP treatment reduced anthracnose severity in passion fruit mainly at $200nL\;L^{-1}{\cdot} 24h^{-1} $. None of the treatments significantly changed the physico-chemical characteristics of the fruit [FWL (2.6-4.1%); pH (3.2-3.5), TSS ($8.9-10.9^{\circ}Brix$), and TA (1.8-2.5% CA)].

• Mycobiology
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• 제45권3호
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• pp.184-191
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• 2017

The anthracnose disease caused by Colletotrichum species is well-known as a major plant pathogen that primarily causes fruit rot in pepper and reduces its marketability. Thirty-five isolates representing species of Colletotrichum were obtained from chili fruits showing anthracnose disease symptoms in Chungcheongnam-do and Chungcheongbuk-do, South Korea. These 35 isolates were characterized according to morphological characteristics and nucleotide sequence data of internal transcribed spacer, glyceraldehyde-3-phosphate-dehydrogenase, and ${\beta}$-tubulin. The combined dataset shows that all of these 35 isolates were identified as C. scovillei and morphological characteristics were directly correlated with the nucleotide sequence data. Notably, these isolates were recorded for the first time as the causes of anthracnose caused by C. scovillei on pepper in Korea. Forty cultivars were used to investigate the pathogenicity and to identify the possible source of resistance. The result reveals that all of chili cultivars used in this study are susceptible to C. scovillei.

• 한국식물병리학회지
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• 제11권3호
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• pp.224-229
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• 1995

Occurrence and incidences of major diseases of peach (Prunus persicae pv. vulgaris), leaf curl caused by Taphrina deformans, bacterial shot hole caused by Xanthomonas campestris pv. pruni, brown rot caused by Monilinia fructicola, and anthracnose caused by Glomerella cingulata in peach orchards in Cheongdo and Kyungsan areas of Gyeongbuk province, Korea, were investigated for four years from 1990 to 1993. In leaf curl and bacterial shot hole which mainly occurred on leaves, frist disease occurrences were dated from late April to early May. The maximum leaf curl incidence was dated in mid May, while dates of the maximum bacterial shot hole incidence varied from mid May to mid August depending on the years surveyed. In brown rot and anthracnose on fruit, the first disease occurrence dates ranged from early June to early August; however, the maximum disease incidences for both were invariably dated in late August. The disease incidences on the dates of the maximum incidences differed year by year, and the averages for the 4 years were 13.2%, 10.5%, 10.9% and 3.8% for leaf curl, bacterial shot hole, brown rot and anthracnose, respectively. Especially in the leaf curl disease, the first disease occurrence dates and the maximum disease incidences matched with the amounts of precipitation of rain up to April, suggesting that the disease occurrence may be related to the precipitation during the early season. The occurrence of leaf curl was somewhat higher in cultivar“Baekmi”than other cultivars. All of the major disease occurred more in hilly orchards than in plain ones.

• 원예과학기술지
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• 제34권2호
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• pp.242-248
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• 2016

This research was conducted to determine the effects of four different substrates, expanded rice hulls (ERH), commercial substrates for strawberries (CSS), clay sand (CS), and loamy sand (LS), on the inhibition of anthracnose crown rot (ACR) in strawberry. Mother plants of 'Seolhyang' strawberry were transplanted into an elevated bed in March, 2013 and March, 2014 and the runners connecting mother plants and daughter plants were cut in early August of both years. After separation, growth characteristics of the daughter plants were measured and then each daughter plant was inoculated with conidial suspensions of Colletotrichum fructicola, one of several species of Colletotrichum that causes ACR in strawberries. The incidence of ACR as influenced by the different substrates was investigated in both years. The daughter plants grown on CSS had the highest values for shoot height, leaf area, and fresh weight. Those grown on ERH and LS substrates also displayed good above-ground growth characteristics except for fresh weight, but the daughter plants grown on CS had the poorest above-ground growth characteristics. The ERH and CS treatments resulted in the highest number of primary roots and the greatest root weight. The CSS-grown daughter plants had the highest ACR disease index, followed by the CS and LS treatments, but there were no significant differences among the three substrates. However, the ERH-grown daughter plants had a markedly lower ACR disease index on October 11, 2013 and October 7, 2014. The CSS-grown daughter plants had high nitrogen and potassium contents and low calcium content, whereas the ERH-grown daughter plants had low nitrogen levels and high silicon levels. The results of this study provide basic information on the ability of the different substrates tested to provide disease suppression of ACR in the propagation of strawberry transplants.

• The Plant Pathology Journal
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• 제36권2호
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• pp.133-147
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• 2020

Hexanal, a C-6 aldehyde has been implicated to have antimicrobial properties. Hence, this study was conducted to determine the antifungal activities of hexanal vapor against major postharvest pathogens of banana viz., Colletotrichum gloeosporioides and Lasiodiplodia theobromae. The pathogens were cultured in vitro and exposed to hexanal vapor at 600, 800, 1,000 and 1,200 ppm. Mycelial growth of both fungal pathogens were inhibited completely at 800 ppm and the incidence of anthracnose and stem-end rot diseases reduced by 75.2% and 80.2%, respectively. The activities of peroxidase, polyphenol oxidase, phenylalanine ammonia-lyase and glucanase had transiently increased in hexanal vapor treated banana by 5 to 7 days and declined thereafter. Postharvest treatment of banana with hexanal vapor resulted in phospholipase D inhibition and also resulted in cell wall thickening of the treated fruit, which impeded the penetration of the pathogenic spores. This was further confirmed by scanning electron micrographs. The defense-related protein intermediaries had increased in hexanal vapor treated banana fruit, which suggests induced resistance against C. gloeosporioides and L. theobromae, via., the phenylpropanoid pathway which plays a significant role in hindering the pathogen quiescence. Delayed ripening due to inhibition of phospholipase D enzyme, inhibition of mycelial growth and induced systemic resistance by defense enzymes collectively contributed to the postharvest disease reduction and extended shelf life of fruit.

• 한국균학회지
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• 제12권4호
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• pp.153-157
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• 1984

충북산(忠北産) 쇠뿔고추 종자(種子) 열매로 부터 분리(分離)한 고추 탄저병균(炭疽病菌)(Colletotrichum dematium f. sp. capsicum)에 대(對)한 형태적(形態的) 특징(特徵) 및 병원성(病原性)을 구명(究明)코저본(本) 험험(驗驗)을 착수(着手) 하였던 바 얻어진 몇가지 결과(結果)는 다음과 같다. 1. 종자검정(種子檢定) Blotter법(法)에 의(依)한 수집(收集) 고추종자(種子)로 부터 본(本) 탄저병균(炭疽病菌)의 분리비율(分離比率)은 제원산(提原産)이 55.3%, 음성산(陰城産)이 0.3%이었다. 2. 분생포자퇴(分生胞子堆)의 모양은 기존(旣存) C. gloesporioides와 C. acutatum과 유사(類似)하나 setae가 달라 분생포자퇴상(分生胞子堆上)에 길게 뻗어 있었다. 분생포자(分生胞子)의 형태(形態)도 낫모양이고 그 크기는 $12{\sim}31.2{\times}2.4{\sim}4.8{\mu}m$이 었다. 3. 고추 종자상(種子上)에 감염부위(感染部位)는 본(本) 병원균(病原菌)이 종피전표면(種皮全表面)에 산재(散在)하여 있으며 종자(種子) 제부분(臍部分)에서 싹이 틈과 동시(同時)에 싹에 감염(感染)하여 싹의 신장(伸長)을 억제(抑制)시키고 심(甚)하면 고사(枯死)되었다. 4. 병원성(病原性)을 검정(檢定)코저 고추 발아(發芽) 종자(種子)에 본탄저병균(本炭疽病菌)의 현탁액(縣濁液) 접종(接種)과 잎과 열매에 분무접종(噴霧接種) 결과(結果) 어린 모에서는 발아전(發芽前)과 발아후(發芽後) 입고증상(立枯症狀)을 나타내면서 자엽(子葉)이 고사(枯死)되었고 앞에서는 부정원형(否定圓形)의 갈색병징(褐色病徵)을 나타내면서 그 병반(病班)이 확대(擴大)된 후(後) 고사(枯死)되였다. 열매에는 동심윤문(同心輪紋)의 흑색병반(黑色病斑)이 형성(形成)되었다. 콩, 시금치 및 파잎에 접종(接種)하였던 바 뚜렷한 병반(病斑)을 얻지 못하였다. 5. 이상(以上)과 같은 병원학적(病原學的) 결과(結果)에 의(依)하여 본(本) 탄저병균(炭疽病菌)은 Colletotrichum dematium f. sp. capsicum에 의(依)한 우리나라에서의 미기록(未記錄) 고추 탄저병균(炭疽病菌)으로 동정(同定)되어 보고(報告)드리는 바 입니다.

• 식물병연구
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• 제9권1호
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• pp.10-17
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• 2003

2002년은 여러 가지로 기상이 특이한 해였다. 겨울철의 이상난동, 3-4월의 고온 및 한발, 그리고 6월, 7월초중순의 가뭄, 7월하순부터 8월한달 내내 지속된 강우, 저온, 일조부족 등 여러모로 작물환경에 불리한 환경이 조성된 해였다. 이러한 기상특성과 상관하여 금년은 일반적으로 저온, 일조부족, 다우조건을 좋아하는 병해의 발생이 많았으며 벼의 경우 세균성알마름병, 이삭누룩병의 발생이 증가한 반면 도열병 등 주요병해는 질소비료의 시용량이 감소함에 따라 발생이 감소하였다. 채소, 과수류, 서류 병해의 발생은 생육기의 기상조건에 따라 많은 편차가 있으나 다우조건과 관련이 깊은 역병 등 저온성 병해의 발생이 증가한 반면에 탄저병, 무름병 등의 발생은 뚜렷이 감소하는 경향을 보였다.

• 한국육종학회지
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• 제50권4호
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• pp.497-503
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• 2018

고품질 대과종 딸기 신품종 육성을 위해 고경도이면서 과실 품질이 우수한 일본 품종 '도치오토메'를 모본으로 하고 대과성이면서 다수성인 국산 품종 '설향'을 부본으로 2014년에 교배조합을 작성하였다. 생육, 품질 특성 등 원예적 특성을 종합 평가하여 '14-5-5' 계통을 최종 선발하고 2015~2017년도에 계통선발시험 및 생산력검정시험을 하였다. 2017년도 농촌진흥청 직무육성 신품종 선정위원회에 상정하여 '아리향(Arihyang)'으로 명명하였다. '아리향'은 초세, 출엽 속도 및 흡비력이 우수하고 고경도, 대과성이면서 과실 크기가 균일하고 다수성이다. 화아분화는 '설향'보다 2~3일 정도 빠른 편으로 촉성 재배에 적합하며, 조기, 연속 출뢰성이 우수하고 정화방 화수는 평균 10.5개로 적어 적과 노력을 경감할 수 있다. 과형은 원추형으로 과피색 및 과육색은 진한 붉은색이고 과피 광택은 양호하다. 과실 품질은 양호하나 과실 착색이 빠른 반면 착색 후기인 완숙 단계에서 품종 고유의 품질 특성을 나타낸다. 비타민 C는 '설향'보다 약 15% 유의하게 많다. 병해충 저항성은 '설향'과 비교하여 역병은 다소 강한 경향이나 흰가루병은 약하며, 잿빛곰팡이병과 시들음병은 유사하거나 조금 약하다. 탄저병은 '매향'과 유사한 이병성이나 '아키히메'보다는 강하다. 따라서 재배적으로 비가림 포트 육묘와 토양(배지) 소독이 필요하며 생육 전기간에 걸쳐 흰가루병에 대한 예방적 방제가 필요하다.