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- 저자 : ( Hyunjung Roh ) (검색결과 6 건)
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Comparative Pathogenicity and Host Ranges of Magnaporthe oryzae and Related Species
Hyunjung Chung,Jaeduk Goh,Seong-Sook Han,Jae-Hwan Roh,Yangseon Kim,Sunggi Heu,Hyeong-Kwon Shim,Da Gyeong Jeong,In Jeong Kang,Jung-Wook Yang 한국식물병리학회 2020 Plant Pathology Journal Vol.36 No.4
Host shifting and host expansion of fungal plant pathogens increases the rate of emergence of new pathogens and the incidence of disease in various crops, which threaten global food security. Magnaporthe species cause serious disease in rice, namely rice blast disease, as well as in many alternative hosts, including wheat, barley, and millet. A severe outbreak of wheat blast due to Magnaporthe oryzae occurred recently in Bangladesh, after the fungus was introduced from South America, causing great loss of yield. This outbreak of wheat blast is of growing concern, because it might spread to adjacent wheat-producing areas. Therefore, it is important to understand the host range and population structure of M. oryzae and related species for determining the evolutionary relationships among Magnaporthe species and for managing blast disease in the field. Here, we collected isolates of M. oryzae and related species from various Poaceae species, including crops and weeds surrounding rice fields, in Korea and determined their phylogenetic relationships and host species specificity. Internal transcribed spacer-mediated phylogenetic analysis revealed that M. oryzae and related species are classified into four groups primarily including isolates from rice, crabgrass, millet and tall fescue. Based on pathogenicity assays, M. oryzae and related species can infect different Poaceae hosts and move among hosts, suggesting the potential for host shifting and host ex- pansion in nature. These results provide important information on the diversification of M. oryzae and re- lated species with a broad range of Poaceae as hosts in crop fields.
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정현정(Hyunjung Chung),강인정(In Jeong Kang),양정욱(Jung-Wook Yang),노재환(Jae-Hwan Roh),심형권(Hyeong-Kwon Shim),허성기(Sunggi Heu) 한국식물병리학회 2019 식물병연구 Vol.25 No.3
Almost 30% of arable lands of North Korea are covered with paddy rice. In rice cultivation of North Korea, rice blast disease is the most important fungal disease and bacterial leaf blight is the most important bacterial disease. Seven North Korean rice cultivars had been tested for the disease resistance against rice blast pathogen, Magnaporthe oryzae and bacterial leaf blight pathogen, Xanthomonas oryzae pv. oryzae. The responses of seven cultivars against 17 different M. oryzae races from South Korea had been quite different. Among seven cultivars, Giljoo1ho was very resistant to all 18 different M. oryzae isolates from South Korea, nevertheless KI or KJ. Pyungdo5ho was very susceptible, it showed susceptible responses to 8 out of 10 KI races and 7 out of 8 KJ races of M. oryzae isolated in South Korea. However, the response to bacterial leaf blight was different from the response to rice blast pathogen. Gijoo1ho, Wonsan69ho, Onpo1ho, and Pyungdo15ho were susceptible to KXO42 (K1) and KXO90 (K2), respectively. Pyungdo5ho was resistant to KXO85 (K1) and KXO19 (K3), and Pyungyang21ho was resistant to K1 races. Based on these results, Giljoo1ho can be a good resource for the breeding of resistant rice cultivar against M. oryzae isolates from South Korea.
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Developing Electronic Maps on First-run and Doublefeature Cinemas in Seoul from 1976 to 1995
Youngsue Han,Hyunjung Roh,Whelan Thomas,Jisun Park,Jieun Kim 한국콘텐츠학회 2023 International Journal of Contents Vol.19 No.4
This paper evaluated the geographical distribution, chronological and economic patterns of the commercial cinema industry in Seoul, Korea dichotomized by the two main types of cinemas that have been prevalent in the recent Korean history, the first-run cinemas and the double-feature cinemas. This analysis involved computational technologies including the R statistical programing language and the interactive map library known as Leaflet for R in order to scrutinize the aforementioned patterns. Historically the cinema industry has been under the tight control of authoritarian military dictatorships that have run Korea in past decades, and the measures they took to control the cinema industry leading to unexpected ramifications. One of them is the decrease in the quality of domestic films, as competition with international films was reduced, and another is the massive increase in the domestic production of low-quality sex-exploitation B-tier films. The double feature cinemas played a big role in the distribution of the low- quality films. Our electronic maps will clearly represent the hierarchy and differentiation of these cinemas in the cinematic landscape of Seoul.
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Impact of the Spillover of the Japanese Television on Professional Baseball in Korea
( Jieun Kim ),( Youngsue Han ),( Hyunjung Roh ),( Thomas Whelan ),( Jisun Park ) 한국체육대학교 체육과학연구소 2023 스포츠사이언스 Vol.41 No.3
This paper addresses the spillover effects of Japanese television on the development of professional baseball in Korea in the 1980s. The success of professional baseball in Korea was heavily influenced by Korea’s encounter with modernity from Japanese cultural influences. There was an unintentional dissemination of Japanese broadcast television into the Busan area in which was formed a cultural contact zone between Korea and Japan. The people in Busan could indeed watch Japanese professional baseball on television due to the proximity of Busan to the Japanese mainland. We will also draw on Foucault’s concept of heterotopia to help explain and contextualize certain elements of Japanese baseball broadcasting and their impact on Korean baseball. We will postulate the idea that heterotopia can emerge even in contact zones that can create a certain level of conflict alongside the role of the propagation of Japanese media and its provision of an exceptional space where what would be considered abnormal human and social behaviors were tolerated.
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( Woo Chul Chung ),( Bo In Lee ),( Sang Young Roh ),( Jae Wuk Kwak ),( Sun Mee Hwang ),( Yoon Ho Ko ),( Jung Hwan Oh ),( Hyunjung Cho ),( Hiun Suk Chae ),( Young Seok Cho ) 대한간학회 2011 Gut and Liver Vol.5 No.4
Background/Aims: Recent data from Western populations have suggested that patients with sporadic duodenal adenomas are at a higher risk for the development of colorectal neoplasia. In this study, we compared the frequency of colorectal neoplasia in patients with sporadic duodenal adenomas to healthy control subjects. Methods: This retrospective case-control study used the databases of 3 teaching hospitals in Gyeonggi-do Province, South Korea. The colonoscopy fi ndings of patients with sporadic duodenal adenomas were compared with those of age- and gender-matched healthy individuals who had undergone gastroduodenoscopies and colonoscopies during general screening examinations. Results: Between 2001 and 2008, 45 patients were diagnosed endoscopically with sporadic duodenal adenomas; 26 (58%) of these patients received colonoscopies. Colorectal neoplasia (42% vs 21%; odds ratio [OR], 2.8; 95% confi dence interval [CI], 1.1 to 7.4) and advanced colorectal adenoma (19% vs 3%; OR, 9.0; 95% CI, 1.6 to 50.0) were signifi cantly more common in patients with sporadic duodenal adenomas than in healthy control subjects. Conclusions: Compared with healthy individuals, patients with sporadic duodenal adenomas were at a signifi cantly higher risk for developing colorectal neoplasia. Such at-risk patients should undergo routine screening colonoscopies. (Gut Liver 2011;5:432-436)
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