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Woo J, Jung S, Kim S, Li Y, Chung H, Roubtsova TV, Zhang H, Caseys C, Kliebenstein D, Kim KN, Bostock RM, Lee YH, Dickman MB, Choi D, Park E, Dinesh-Kumar SP. Attenuation of phytofungal pathogenicity of Ascomycota by autophagy modulators. Nat Commun 2024; 15:1621. [PMID: 38424448 PMCID: PMC10904834 DOI: 10.1038/s41467-024-45839-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 02/02/2024] [Indexed: 03/02/2024] Open
Abstract
Autophagy in eukaryotes functions to maintain homeostasis by degradation and recycling of long-lived and unwanted cellular materials. Autophagy plays important roles in pathogenicity of various fungal pathogens, suggesting that autophagy is a novel target for development of antifungal compounds. Here, we describe bioluminescence resonance energy transfer (BRET)-based high-throughput screening (HTS) strategy to identify compounds that inhibit fungal ATG4 cysteine protease-mediated cleavage of ATG8 that is critical for autophagosome formation. We identified ebselen (EB) and its analogs ebselen oxide (EO) and 2-(4-methylphenyl)-1,2-benzisothiazol-3(2H)-one (PT) as inhibitors of fungal pathogens Botrytis cinerea and Magnaporthe oryzae ATG4-mediated ATG8 processing. The EB and its analogs inhibit spore germination, hyphal development, and appressorium formation in Ascomycota pathogens, B. cinerea, M. oryzae, Sclerotinia sclerotiorum and Monilinia fructicola. Treatment with EB and its analogs significantly reduced fungal pathogenicity. Our findings provide molecular insights to develop the next generation of antifungal compounds by targeting autophagy in important fungal pathogens.
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Affiliation(s)
- Jongchan Woo
- Department of Plant Biology and the Genome Center, College of Biological Sciences, University of California, Davis, CA, USA
- Department of Molecular Biology, College of Agriculture, Life Sciences and Natural Resources, University of Wyoming, Laramie, WY, USA
- Plant Immunity Research Center, College of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - Seungmee Jung
- Department of Molecular Biology, College of Agriculture, Life Sciences and Natural Resources, University of Wyoming, Laramie, WY, USA
| | - Seongbeom Kim
- Department of Agricultural Biotechnology, College of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - Yurong Li
- Department of Plant Pathology and Microbiology, College of Agriculture and Life Sciences, Texas A & M University, College Station, TX, USA
- Corteva Agriscience, Johnston, IA, USA
| | - Hyunjung Chung
- Department of Agricultural Biotechnology, College of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - Tatiana V Roubtsova
- Department of Plant Pathology, College of Agriculture and Environmental Sciences, University of California, Davis, CA, USA
| | - Honghong Zhang
- Department of Plant Pathology and Microbiology, College of Agriculture and Life Sciences, Texas A & M University, College Station, TX, USA
- Fujian University Key Laboratory for Plant-Microbe Interaction, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Celine Caseys
- Department of Plant Sciences, College of Agriculture and Environmental Sciences, University of California, Davis, CA, USA
| | - Dan Kliebenstein
- Department of Plant Sciences, College of Agriculture and Environmental Sciences, University of California, Davis, CA, USA
| | - Kyung-Nam Kim
- Department of Bioindustry and Bioresource Engineering, College of Life Sciences, Sejong University, Seoul, Republic of Korea
| | - Richard M Bostock
- Department of Plant Pathology, College of Agriculture and Environmental Sciences, University of California, Davis, CA, USA
| | - Yong-Hwan Lee
- Department of Agricultural Biotechnology, College of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - Martin B Dickman
- Department of Plant Pathology and Microbiology, College of Agriculture and Life Sciences, Texas A & M University, College Station, TX, USA
| | - Doil Choi
- Plant Immunity Research Center, College of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea.
| | - Eunsook Park
- Department of Molecular Biology, College of Agriculture, Life Sciences and Natural Resources, University of Wyoming, Laramie, WY, USA.
| | - Savithramma P Dinesh-Kumar
- Department of Plant Biology and the Genome Center, College of Biological Sciences, University of California, Davis, CA, USA.
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Choi SY, Lee SY, Geum CO, Chung H, Oh E, Kim SM, Kim S, Lee YH. First report of wilt disease caused by Pythium myriotylum on peanut plants in Korea. Plant Dis 2024. [PMID: 38173269 DOI: 10.1094/pdis-11-23-2311-pdn] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Peanut (Arachis hypogaea L.) has long been cultivated worldwide as an important crop for oil and protein production. Among the various diseases in peanut plants, wilt diseases caused by soil-borne pathogens such as Ralstonia solanacearum and Verticillium dahliae are especially destructive and substantially diminish both quantity and quality in peanut production (Kokalis-Burelle et al., 1997; Thiessen et al., 2012). In July 2022, wilt symptoms were observed in 1 to 3% of the area of peanut fields in Yeoju-si, Korea (37°23´04.0˝N; 127°33´43.0˝E). The xylem in the stems of the wilted plants was dark brown at the soil-surface, which is a representative symptom of vascular wilt pathogens (Yadeta et al. 2013). To isolate the causative pathogens, the stems exhibiting dark lesions were disinfected with 1% NaOCl for 1 min, rinsed with sterile distilled water, and placed on potato dextrose agar medium. The plates were incubated at 25℃ for 2 days, and white hyphae that grew out from the tissues were subcultured twice on V8 juice agar (V8A) medium. Among the 3 isolates, morphological characteristics of the representative strain YJ1-2 were observed under a microscope. The sporangia were terminal intercalary, filamentous, inflated lobulate, and ranging from 37.4 to 73.6 μm in diameter. The antheridia were diclinous, with clavate, elongate, and crook-necked shapes. The oogonia were mostly globose, with an average of 27.1 μm (range from 20.2 to 35.2 μm, n = 50) in diameter, and mated with one to several antheridia. Both plerotic or aplerotic oospores were observed. Overall, the morphological characteristics of the sporangia, antheridia, oogonia, and oospores indicated that YJ1-2 belongs to the genus Pythium. To genetically characterize YJ1-2, genomic DNA was extracted using cetyltrimethylammonium bromide buffer, and the internal transcribed spacer (ITS) region and cytochrome c oxidase subunit I (cox1) gene were amplified by PCR using primer sets ITS4/ITS5 and OomCoxI-Levlo/ OomCoxI-Levup, respectively (White et al., 1990; Robideau et al. 2011), sequenced, and identified using BLASTN (NCBI, National Center for Biotechnology Information). The ITS sequence (NCBI Acc. No. OR125595) of YJ1-2 has 99% similarity with that of P. myriotylum isolate PY39 (NCBI Acc. No. KX671096). A neighbor-joining phylogenetic tree was constructed from aligned cox1 sequence (NCBI Acc. No. OR224334) of the 10 Pythium species strains including YJ1-2 by CLUSTALW method was used as an outgroup. The YJ1-2 was most closely related to P. myriotylum isolate PM30 (NCBI Acc. No. MT823167). To substantiate the pathogenicity of YJ1-2, the crown roots of peanut plants grown in pots for 4 weeks were wounded using a sterile tweezer, and the mycelial plugs of YJ1-2 cultured for 5 days on V8A were inoculated on the wounds. The inoculated plants were cultivated in a growth chamber at 30℃ and 70% relative humidity with a 12-h photoperiod. The infected peanut plants exhibited wilt symptoms 11 days after inoculation, consistent with the initial observation, while uninoculated plants remained healthy. To satisfy Koch's postulates, white mycelia were re-isolated from the stems of inoculated plants and axenically cultured in V8A. The morphologies and ITS sequences of the re-isolates were consistent with those of YJ1-2. P. myriotylum has been reported as a causal pathogen of peanut pod rot in the United States and China. However, to the best of our knowledge, this is the first report of wilt disease in peanut plants caused by P. myriotylum in Korea. To prevent the incidence of wilt disease, we will continue our investigations to develop control strategies, including the selection of appropriate agrochemicals.
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Affiliation(s)
- Soo Yeon Choi
- National Institute of Crop Science, 435272, Crop Foundation Research, Wanju-gun, Korea (the Republic of);
| | - Seung Yeup Lee
- National Institute of Agricultural Sciences, 230986, Crop Protection Division, Wanju-gun, Korea (the Republic of);
| | - Chang Ok Geum
- National Institute of Crop Science, 435272, Crop Foundation Research, Wanju-gun, Korea (the Republic of);
| | - Hyunjung Chung
- National Institute of Crop Science, 435272, Crop Foundation Research Division, Wanju-gun, Korea (the Republic of);
| | - Eunyoung Oh
- National Institute of Crop Science, 435272, Upland Crop Breeding Division, Wanju-gun, Korea (the Republic of);
| | - Sang-Min Kim
- National Institute of Crop Science, 435272, Crop Foundation Research , Wanju-gun, Korea (the Republic of);
| | - Shinhwa Kim
- National Institute of Crop Science, 435272, Crop Foundation Research Division, Wanju-gun, Korea (the Republic of);
| | - Yong Hoon Lee
- Jeonbuk National University, 26714, Division of Biotechnology, Jeonju, Korea (the Republic of);
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Libourel PA, Lee WY, Achin I, Chung H, Kim J, Massot B, Rattenborg NC. Nesting chinstrap penguins accrue large quantities of sleep through seconds-long microsleeps. Science 2023; 382:1026-1031. [PMID: 38033080 DOI: 10.1126/science.adh0771] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 10/05/2023] [Indexed: 12/02/2023]
Abstract
Microsleeps, the seconds-long interruptions of wakefulness by eye closure and sleep-related brain activity, are dangerous when driving and might be too short to provide the restorative functions of sleep. If microsleeps do fulfill sleep functions, then animals faced with a continuous need for vigilance might resort to this sleep strategy. We investigated electroencephalographically defined sleep in wild chinstrap penguins, at sea and while nesting in Antarctica, constantly exposed to an egg predator and aggression from other penguins. The penguins nodded off >10,000 times per day, engaging in bouts of bihemispheric and unihemispheric slow-wave sleep lasting on average only 4 seconds, but resulting in the accumulation of >11 hours of sleep for each hemisphere. The investment in microsleeps by successfully breeding penguins suggests that the benefits of sleep can accrue incrementally.
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Affiliation(s)
- P-A Libourel
- Neuroscience Research Center of Lyon, Bron, France
| | - W Y Lee
- Korea Polar Research Institute, Incheon, Republic of Korea
| | - I Achin
- Neuroscience Research Center of Lyon, Bron, France
| | - H Chung
- Korea Polar Research Institute, Incheon, Republic of Korea
| | - J Kim
- Cheongju Zoo, Cheongju, Republic of Korea
| | - B Massot
- Lyon Institute of Nanotechnology, Villeurbanne, France
| | - N C Rattenborg
- Avian Sleep Group, Max Planck Institute for Biological Intelligence, Seewiesen, Germany
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Choi H, Jo Y, Chung H, Choi SY, Kim SM, Hong JS, Lee BC, Cho WK. Investigating Variability in Viral Presence and Abundance across Soybean Seed Development Stages Using Transcriptome Analysis. Plants (Basel) 2023; 12:3257. [PMID: 37765420 PMCID: PMC10535271 DOI: 10.3390/plants12183257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 09/05/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023]
Abstract
Plant transcriptomes offer a valuable resource for studying viral communities (viromes). In this study, we explore how plant transcriptome data can be applied to virome research. We analyzed 40 soybean transcriptomes across different growth stages and identified six viruses: broad bean wilt virus 2 (BBWV2), brassica yellow virus (BrYV), beet western yellow virus (BWYV), cucumber mosaic virus (CMV), milk vetch dwarf virus (MDV), and soybean mosaic virus (SMV). SMV was the predominant virus in both Glycine max (GM) and Glycine soja (GS) cultivars. Our analysis confirmed its abundance in both, while BBWV2 and CMV were more prevalent in GS than GM. The viral proportions varied across developmental stages, peaking in open flowers. Comparing viral abundance measured by viral reads and fragments per kilobase of transcript per million (FPKM) values revealed insights. SMV showed similar FPKM values in GM and GS, but BBWV2 and CMV displayed higher FPKM proportions in GS. Notably, the differences in viral abundance between GM and GS were generally insignificant based on the FPKM values across developmental stages, except for the apical bud stage in four GM cultivars. We also detected MDV, a multi-segmented virus, in two GM samples, with variable proportions of its segments. In conclusion, our study demonstrates the potential of plant transcriptomes for virome research, highlighting their strengths and limitations.
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Affiliation(s)
- Hoseong Choi
- Plant Health Center, Seoul National University, Seoul 08826, Republic of Korea;
| | - Yeonhwa Jo
- College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, Republic of Korea;
| | - Hyunjung Chung
- Crop Foundation Division, National Institute of Crop Science, Rural Development Administration, Wanju 55365, Republic of Korea; (H.C.); (S.Y.C.); (S.-M.K.)
| | - Soo Yeon Choi
- Crop Foundation Division, National Institute of Crop Science, Rural Development Administration, Wanju 55365, Republic of Korea; (H.C.); (S.Y.C.); (S.-M.K.)
| | - Sang-Min Kim
- Crop Foundation Division, National Institute of Crop Science, Rural Development Administration, Wanju 55365, Republic of Korea; (H.C.); (S.Y.C.); (S.-M.K.)
| | - Jin-Sung Hong
- Department of Applied Biology, Kangwon National University, Chuncheon 24341, Republic of Korea;
| | - Bong Choon Lee
- Crop Protection Division, National Academy of Agricultural Science, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Won Kyong Cho
- College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, Republic of Korea;
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Chung H, Lee WI, Choi SY, Choi NJ, Kim SM, Yoon JY, Lee BC. Outbreak of Rice Panicle Blast in Jeonbuk Province of Korea in 2021. Plant Pathol J 2023; 39:136-140. [PMID: 36760055 PMCID: PMC9929167 DOI: 10.5423/ppj.nt.07.2022.0103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 11/15/2022] [Accepted: 12/15/2022] [Indexed: 06/18/2023]
Abstract
Rice panicle blast is one of the most serious diseases threatening stable rice production by causing severe damage to rice yields and quality. The disease is easy to occur under low air temperature and frequent heavy rainfall during the heading season of rice. In 2021, a rice panicle blast severely occurred in the Jeonbuk province of Korea. The incidence area of panicle blast accounted for 27.7% of the rice cultivation area of Jeonbuk province in 2021, which was 13.7-times higher than in 2019 and 2.6-times higher than in 2020. This study evaluated the incidence areas of rice panicle blast in each region of Jeonbuk province in 2021. The weather conditions during the heading season of rice, mainly cultivated rice cultivars, and the race diversity of the Jeonbuk isolates were also investigated. It will provide important information for the effective control of the rice panicle blast.
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Affiliation(s)
- Hyunjung Chung
- Crop Foundation Research Division, National Institute of Crop Science, Rural Development Administration, Wanju 55365,
Korea
| | - Woo-Il Lee
- Disaster Management Division, Extension Service Bureau, Rural Development Administration, Jeonju 54875,
Korea
- Department of Plant Protection and Quarantine, Graduate School of Plant Protection and Quarantine, Jeonbuk National University, Jeonju 54896,
Korea
| | - Soo Yeon Choi
- Crop Foundation Research Division, National Institute of Crop Science, Rural Development Administration, Wanju 55365,
Korea
| | - Nak-Jung Choi
- Crop Foundation Research Division, National Institute of Crop Science, Rural Development Administration, Wanju 55365,
Korea
| | - Sang-Min Kim
- Crop Foundation Research Division, National Institute of Crop Science, Rural Development Administration, Wanju 55365,
Korea
| | - Ju-Yeon Yoon
- Department of Plant Protection and Quarantine, Graduate School of Plant Protection and Quarantine, Jeonbuk National University, Jeonju 54896,
Korea
| | - Bong Choon Lee
- Crop Protection Division, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365,
Korea
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Zhao DD, Jang YH, Kim EG, Park JR, Jan R, Lubna, Asaf S, Asif S, Farooq M, Chung H, Kang DJ, Kim KM. Identification of a Major Locus for Lodging Resistance to Typhoons Using QTL Analysis in Rice. Plants (Basel) 2023; 12:449. [PMID: 36771534 PMCID: PMC9919122 DOI: 10.3390/plants12030449] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 01/06/2023] [Accepted: 01/16/2023] [Indexed: 09/10/2023]
Abstract
We detected a new target quantitative trait locus (QTL) for lodging resistance in rice by analyzing lodging resistance to typhoons (Maysak and Haishen) using a scale from 0 (no prostrating) to 1 (little prostrating or prostrating) to record the resistance score in a Cheongcheong/Nagdong double haploid rice population. Five quantitative trait loci for lodging resistance to typhoons were detected. Among them, qTyM6 and qTyH6 exhibited crucial effects of locus RM3343-RM20318 on chromosome 6, which overlaps with our previous rice lodging studies for the loci qPSLSA6-2, qPSLSB6-5, and qLTI6-2. Within the target locus RM3343-RM20318, 12 related genes belonging to the cytochrome P450 protein family were screened through annotation. Os06g0599200 (OsTyM/Hq6) was selected for further analysis. We observed that the culm and panicle lengths were positively correlated with lodging resistance to typhoons. However, the yield was negatively correlated with lodging resistance to typhoons. The findings of this study improve an understanding of rice breeding, particularly the culm length, early maturing, and heavy panicle varieties, and the mechanisms by which the plant's architecture can resist natural disasters such as typhoons to ensure food safety. These results also provide the insight that lodging resistance in rice may be associated with major traits such as panicle length, culm length, tiller number, and heading date, and thereby improvements in these traits can increase lodging resistance to typhoons. Moreover, rice breeding should focus on maintaining suitable varieties that can withstand the adverse effects of climate change in the future and provide better food security.
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Affiliation(s)
- Dan-Dan Zhao
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
- Crop Foundation Research Division, National Institute of Crop Science, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Yoon-Hee Jang
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Eun-Gyeong Kim
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Jae-Ryoung Park
- Crop Breeding Division, National Institute of Crop Science, Rural Development Administration, Wanju 55365, Republic of Korea
- Coastal Agriculture Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Rahmatullah Jan
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Lubna
- Natural and Medical Science Research Center, University of Nizwa, Nizwa 616, Oman
| | - Sajjad Asaf
- Natural and Medical Science Research Center, University of Nizwa, Nizwa 616, Oman
| | - Saleem Asif
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Muhammad Farooq
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Hyunjung Chung
- Crop Foundation Research Division, National Institute of Crop Science, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Dong-Jin Kang
- Teaching and Research Center for Bio-Coexistence, Faculty of Agriculture and Life Science, Hirosaki University, Gosyogawara 037-0202, Japan
| | - Kyung-Min Kim
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea
- Coastal Agriculture Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea
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Choi H, Jo Y, Chung H, Choi SY, Kim SM, Hong JS, Lee BC, Cho WK. Phylogenetic and Phylodynamic Analyses of Soybean Mosaic Virus Using 305 Coat Protein Gene Sequences. Plants (Basel) 2022; 11:3256. [PMID: 36501296 PMCID: PMC9736121 DOI: 10.3390/plants11233256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
Soybean mosaic virus (SMV) of the family Potyviridae is the most devastating virus that infects soybean plants. In this study, we obtained 83 SMV coat protein (CP) sequences from seven provinces in Korea using RT-PCR and Sanger sequencing. Phylogenetic and haplotype analyses revealed eight groups of 83 SMV isolates and a network of 50 SMV haplotypes in Korea. The phylogenetic tree using 305 SMV CP sequences available worldwide revealed 12 clades that were further divided into two groups according to the plant hosts. Recombination rarely occurred in the CP sequences, while negative selection was dominant in the SMV CP sequences. Genetic diversity analyses revealed that plant species had a greater impact on the genetic diversity of SMV CP sequences than geographical origin or location. SMV isolates identified from Pinellia species in China showed the highest genetic diversity. Phylodynamic analysis showed that the SMV isolates between the two Pinellia species diverged in the year 1248. Since the divergence of the first SMV isolate from Glycine max in 1486, major clades for SMV isolates infecting Glycine species seem to have diverged from 1791 to 1886. Taken together, we provide a comprehensive overview of the genetic diversity and divergence of SMV CP sequences.
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Affiliation(s)
- Hoseong Choi
- Plant Genomics and Breeding Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Yeonhwa Jo
- College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hyunjung Chung
- Crop Foundation Division, National Institute of Crop Science, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Soo Yeon Choi
- Crop Foundation Division, National Institute of Crop Science, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Sang-Min Kim
- Crop Foundation Division, National Institute of Crop Science, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Jin-Sung Hong
- Department of Applied Biology, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Bong Choon Lee
- Crop Foundation Division, National Institute of Crop Science, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Won Kyong Cho
- College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
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Chung H, Seo H, Choi SH, Park CK, Kim TM, Park SH, Won JK, Lee JH, Lee ST, Lee JY, Hwang I, Kang KM, Yun TJ. Cluster Analysis of DSC MRI, Dynamic Contrast-Enhanced MRI, and DWI Parameters Associated with Prognosis in Patients with Glioblastoma after Removal of the Contrast-Enhancing Component: A Preliminary Study. AJNR Am J Neuroradiol 2022; 43:1559-1566. [PMID: 36175084 PMCID: PMC9731243 DOI: 10.3174/ajnr.a7655] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 08/21/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND AND PURPOSE No report has been published on the use of DSC MR imaging, DCE MR imaging, and DWI parameters in combination to create a prognostic prediction model in glioblastoma patients. The aim of this study was to develop a machine learning-based model to find preoperative multiparametric MR imaging parameters associated with prognosis in patients with glioblastoma. Normalized CBV, volume transfer constant, and ADC of the nonenhancing T2 high-signal-intensity lesions were evaluated using K-means clustering. MATERIALS AND METHODS A total of 142 patients with glioblastoma who underwent preoperative MR imaging and total resection were included in this retrospective study. From the normalized CBV, volume transfer constant, and ADC maps, the parametric data were sorted using the K-means clustering method. Patients were divided into training and test sets (ratio, 1:1), and the optimal number of clusters was determined using receiver operating characteristic analysis. Kaplan-Meier survival analysis and log-rank tests were performed to identify potential parametric predictors. A multivariate Cox proportional hazard model was conducted to adjust for clinical predictors. RESULTS The nonenhancing T2 high-signal-intensity lesions were divided into 6 clusters. The cluster (class 4) with the relatively low normalized CBV and volume transfer constant value and the lowest ADC values was most associated with predicting glioblastoma prognosis. The optimal cutoff of the class 4 volume fraction of nonenhancing T2 high-signal-intensity lesions predicting 1-year progression-free survival was 9.70%, below which the cutoff was associated with longer progression-free survival. Two Kaplan-Meier curves based on the cutoff value showed a statistically significant difference (P = .037). When we adjusted for all clinical predictors, the cluster with the relatively low normalized CBV and volume transfer constant values and the lowest ADC value was an independent prognostic marker (hazard ratio, 3.04; P = .048). The multivariate Cox proportional hazard model showed a concordance index of 0.699 for progression-free survival. CONCLUSIONS Our model showed that nonenhancing T2 high-signal-intensity lesions with the relatively low normalized CBV, low volume transfer constant values, and the lowest ADC values could serve as useful prognostic imaging markers for predicting survival outcomes in patients with glioblastoma.
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Affiliation(s)
- H Chung
- From the Seoul National University College of Medicine (H.C., H.S.), Seoul, Korea
| | - H Seo
- From the Seoul National University College of Medicine (H.C., H.S.), Seoul, Korea
| | - S H Choi
- Department of Radiology (S.H.C., J.Y.L., I.H., K.M.K., T.J.Y.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
- Center for Nanoparticle Research (S.H.C.), Institute for Basic Science, Seoul, Korea
- School of Chemical and Biological Engineering (S.H.C.), Seoul National University, Seoul, Korea
| | - C-K Park
- Department of Neurosurgery (C.-K.P.), Internal Medicine
| | - T M Kim
- Cancer Research Institute (T.M.K.)
| | - S-H Park
- Departments of Pathology (S.-H.P., J.K.W.), Radiation Oncology
| | - J K Won
- Departments of Pathology (S.-H.P., J.K.W.), Radiation Oncology
| | - J H Lee
- Cancer Research Institute (J.H.L.)
| | - S-T Lee
- Neurology (S.-T.L.), Seoul National University Hospital, Seoul, Korea
| | - J Y Lee
- Department of Radiology (S.H.C., J.Y.L., I.H., K.M.K., T.J.Y.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - I Hwang
- Department of Radiology (S.H.C., J.Y.L., I.H., K.M.K., T.J.Y.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - K M Kang
- Department of Radiology (S.H.C., J.Y.L., I.H., K.M.K., T.J.Y.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - T J Yun
- Department of Radiology (S.H.C., J.Y.L., I.H., K.M.K., T.J.Y.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
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Kwon Y, Lee H, Ryu K, Moon D, Chung H. Paid Sick Leave and Sickness Benefits for employees’ economic and job security: A Scoping Review. Eur J Public Health 2022. [DOI: 10.1093/eurpub/ckac131.550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
In health emergencies, such as in the COVID-19 pandemic, the need to expand or introduce the Paid sick leave(PSL) and Sickness benefits(SB) increases. They are key components of the universal health coverage(UHC) and active labor market policies(ALMPs) that enable workers to take care of their health and guarantee return-to-work after recovery. This study examines effects those policies in achieving economic stability and job security of covered workers through a scoping review. Studies were selected using the search terms ‘paid sick leave', ‘sickness benefits', ‘paid sick day', and ‘earned sick leave’ in PubMed and Web of Science. Our search conducted on 6th April 2021 yielded 1,030 articles, of which 22 articles were included in the review. All articles were analyzed by the 4 sub-groups(employees, families, employers, and government) and we investigated indicators of socio-economic impacts on their lives. Articles are largely PSL(90.9%)-focused. PSL guarantees not only workers’ job security by securing employment agreement, but also their income security by promising part of wages enough to afford healthcare and living expenses during the medical treatment and recovery. Additionally, PSL attenuates employers’ financial risk, as it reduces presenteeism while increasing the return-to-work rate. Moreover, PSL and SB reduce the total healthcare and social security expenditures of the government. To sum up, PSL and SB guarantee health and labor rights by ensuring income and job security to employees while assuring financial stability to both employers, and the government. However, as the previous studies paid less attention on the equity of these impacts at the system levels, future research should more focus on the dimension.
Key messages
• PSL and SB guarantee health and labour rights by ensuring income and job security for employees, while assuring financial stability for both employers and the government.
• The previous studies that examined the effects of PSL and SB paid less attention on the equity of ensuring income and employment security, therefore future studies should focus more on this dimension.
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Affiliation(s)
- Y Kwon
- Department of Public Health Sciences, Graduate School, Korea University , Seoul, South Korea
- BK21 FOUR Learning Health Systems, Korea University , Seoul, South Korea
| | - H Lee
- Department of Public Health Sciences, Graduate School, Korea University , Seoul, South Korea
- BK21 FOUR Learning Health Systems, Korea University , Seoul, South Korea
| | - K Ryu
- Department of Public Health Sciences, Graduate School, Korea University , Seoul, South Korea
- BK21 FOUR Learning Health Systems, Korea University , Seoul, South Korea
| | - D Moon
- People’s Health Institute , Seoul, South Korea
| | - H Chung
- BK21 FOUR Learning Health Systems, Korea University , Seoul, South Korea
- School of Health Policy and Management, Korea University , Seoul, South Korea
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10
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Lee H, Kwon Y, Ryu K, Sohn M, Chung H. The paid sick leave and sickness benefits for universal health coverage: a scoping review. Eur J Public Health 2022. [PMCID: PMC9594345 DOI: 10.1093/eurpub/ckac131.121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background The countries with paid sick leave (PSL) and sickness benefits (SB) mostly provide the benefit coverage to specific categories of workers, which results in health inequalities among employees in COVID-19. The PSL and SB are key factors to achieve universal health coverage (UHC) in that they protect access to healthcare and improve population health. This study attempted to investigate whether the policies helped achieve the UHC when they were expanded. Methods This review followed the scoping review protocol of PRISMA-ScR. On April 6, 2021, we extracted the literature using the keywords ‘paid sick leave', ‘sickness benefits', ‘paid sick day', and ‘earned sick leave’ from PubMed and Web of Science and added two studies through hand-search. All articles were written in English. We did not limit the publication date. Results Forty-four selected studies were based in four single countries and the European Union. Most of the studies were published after 2010 (84.1%) and were conducted as cross-sectional (72.7%) studies. Not only workers who use PSL and SB but also children whose parents use PSL and SB increased their use of healthcare services and getting flu shots. Also, using PSL and SB decreased their unmet healthcare needs and emergency use. The various health status factors, such as infectious disease incidence, mortality, and presenteeism, also decreased. Conclusions The provisions of PSL and SB offer individual and public health benefits by allowing employees and their families to use healthcare services. Group of employees, we can expect similar public health impacts on newly covered groups, thus contributing to achieving the UHC. Since more than 90% of articles are published from the United States, future studies need to evaluate the outcomes of health effects in various European or Asian countries. Key messages • The provision of PSL and SB positively affects employees and their families by allowing them to use healthcare services. • The expansion of PSL and SB contributes to the UHC by guaranteeing indirect medical costs that enable universal access to essential healthcare services.
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Affiliation(s)
- H Lee
- Department of Public Health Sciences, Graduate School, Korea University , Seoul, South Korea
- BK21FOUR Learning Health Systems, Korea University , Seoul, South Korea
| | - Y Kwon
- Department of Public Health Sciences, Graduate School, Korea University , Seoul, South Korea
- BK21FOUR Learning Health Systems, Korea University , Seoul, South Korea
| | - K Ryu
- Department of Public Health Sciences, Graduate School, Korea University , Seoul, South Korea
- BK21FOUR Learning Health Systems, Korea University , Seoul, South Korea
| | - M Sohn
- Division of Health and Medical Sciences, Cyber University of Korea , Seoul, South Korea
| | - H Chung
- BK21FOUR Learning Health Systems, Korea University , Seoul, South Korea
- School of Health Policy and Management, Korea University , Seoul, South Korea
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11
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Yu S, Moon D, Sohn M, Kim J, Chung H. A Sick Benefit Scheme Reduces Unmet Healthcare Needs: An Natural Experiment in Seoul. Eur J Public Health 2022. [DOI: 10.1093/eurpub/ckac131.271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
South Korea experiences four times more unmet healthcare needs than OECD countries (11.6% and 2.6% respectively). Unmet healthcare needs are caused by the double burden of direct and indirect costs including income loss, and OECD countries operate a sickness benefit scheme to resolve sudden loss of pay. Seoul introduced the first sickness benefit system, Seoul-Type Paid Sick Leave Support (hereinafter Seoul Sick Leave), for self-employed national healthcare insurance subscribers to reduce the rate of unmet healthcare needs. By comparing the amount of increasing medical expenses between the beneficiary and non-beneficiary before (2018) and after (2019-2020) the introduction of the system, the study was intended to confirm the reduced unmet healthcare needs. This study used data from the National Health Information Database (NHID) and the difference in differences (DID) analytic framework. 96 and 121 patients were included in benefit and non-benefit cohorts, respectively. As a result, the beneficiary group’s expenses were smaller than those of the non-beneficiary group (coef.=-1.24, p = 0.026). However, the beneficiary group had a greater amount of increase in hospitalization expenses before and after the introduction than the non-beneficiary group did (coef.=1.66, p = 0.005). Our finding showed that the Seoul Sick Leave helped the precarious workers as they were able to use inpatient services when they needed. If it is to be scaled up to the national level, it should be applied all people to enhance universal health insurance in Korea.
Key messages
• Identified the effectiveness of the first sickness benefit system as it helped the precarious workers as they were able to use inpatient services when they needed.
• By financially supporting them, the Seoul Sick Leave support can achieve health promotion through early detection and treatment.
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Affiliation(s)
- S Yu
- BK21FOUR R&E Center for Learning Health Systems, Korea University , Seoul, South Korea
- Health Policy and Management, Korea University , Seoul, South Korea
| | - D Moon
- Center for Labour and Health, People’s Health Institute , Seoul, South Korea
| | - M Sohn
- Division of Health and Medical Sciences, The Cyber University of Korea , Seoul, South Korea
| | - J Kim
- Health Policy and Management, Korea University , Seoul, South Korea
| | - H Chung
- BK21FOUR R&E Center for Learning Health Systems, Korea University , Seoul, South Korea
- Health Policy and Management, Korea University , Seoul, South Korea
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12
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Jo M, Chung H. Inequalities in adverse birth outcomes and survival in early childhood: birth cohort in South Korea. Eur J Public Health 2022. [DOI: 10.1093/eurpub/ckac129.654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Adverse birth outcomes (ABOs) are considered the most common factor of deaths in early childhood. Inequalities in child mortality occur due to interactions between intrinsic and socio-environmental factors related to socioeconomic disadvantage. There are, however, few studies investigating the impact of ABOs on mortality in terms of parental SEP.
Methods
Using the Under-5 Infant Birth-Death Cohort Data in Korea, a pooled retrospective birth cohort of all children born in 2012-2014 was built (N = 1,356,584). We analyzed neonatal, post-neonatal, and childhood mortality by ABOs and with the interaction of parental SEP using the Cox proportional hazard regression model for survival analyses. We further stratified the analysis both by parental SEP and child age. Multiple logistic regression was performed to confirm the social inequalities in ABO itself.
Results
After adjusting for covariates, children born with ABOs presented higher risk of mortality for all periods. For post-neonatal period, lower maternal education showed significant interaction effect with LBW (HR = 0.57; 95% CI = [0.39-0.85]), PTB (HR = 0.53; 95% CI = [0.33-0.86]), LBW & PTB ([HR = 0.67; 95% CI = [0.54-0.83]) while lower paternal education (HR = 0.67; 95% CI = [0.54-0.82]) and maternal unemployment (HR = 0.80; 95% CI = [0.63-0.99]) showed significance for babies with LBW & PTB. However, stratification analyses suggested that the impact of ABOs on mortality was greater for children born to lower parental SEP in neonatal period. Meanwhile apparent social inequalities in ABOs were suggested from regression analyses.
Conclusions
We confirmed social inequalities in the incidence of ABOs as well as mortalities from ABOs. However, the difference in mortality between babies with and without ABOs was greater for advantaged children. Policies to reduce the mortality of children with ABOs as well as those of healthy children among socioeconomically disadvantaged families are required.
Key messages
• Social inequalities in mortality from ABOs were apparent especially in the neonatal period while the incidence of ABOs itself was greater among children from disadvantaged families.
• Disadvantaged children are more likely to die not only from ABOs but also from other socio-environmental determinants, especially in the post-neonatal period than their counterparts.
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Affiliation(s)
- M Jo
- Department of Public Health Sciences, Graduate School of Korea University , Seoul, South Korea
- BK21FOUR Learning Health Systems, Korea University , Seoul, South Korea
| | - H Chung
- BK21FOUR Learning Health Systems, Korea University , Seoul, South Korea
- School of Health Policy and Management, Korea University , Seoul, South Korea
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13
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Lee T, Chung H, Chung J, Hur M, Hwang S, Song Y, Lee D. M168 Automation of harboe method for the measurement of plasma free hemoglobin. Clin Chim Acta 2022. [DOI: 10.1016/j.cca.2022.04.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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14
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Huang I, Chen W, Huang EY, Chung H, Huang WJ. Increased risk of subsequent cardiovascular disease among men aged 31-60 years with erectile dysfunction. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.03.373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Yoon S, Moon H, Yi A, Kim H, Chung H, Hur M, Yun Y, Yoo G. W071 Investigation of serial tests of quantiferon-tb gold in-tube and quantiferon-tb gold-plus in contacts to patients with active tuberculosis. Clin Chim Acta 2022. [DOI: 10.1016/j.cca.2022.04.809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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16
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Correa R, Morton G, Chung H, Tseng C, Cheung P, Chu W, Liu S, McGuffin M, Shahid A, Davidson M, Ravi A, Helou J, Alayed Y, Zhang L, Mamedov A, Loblaw A. PO-1408 Two-fraction prostate SABR vs. two-fraction HDR brachytherapy: does dose heterogeneity matter? Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03372-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Chung H, Jeong DG, Lee JH, Kang IJ, Shim HK, An CJ, Kim JY, Yang JW. Outbreak of Rice Blast Disease at Yeoju of Korea in 2020. Plant Pathol J 2022; 38:46-51. [PMID: 35144361 PMCID: PMC8831358 DOI: 10.5423/ppj.nt.08.2021.0130] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 11/04/2021] [Accepted: 12/29/2021] [Indexed: 05/24/2023]
Abstract
Rice blast is the most destructive disease threatening stable rice production in rice-growing areas. Cultivation of disease-resistant rice cultivars is the most effective way to control rice blast disease. However, the rice blast resistance is easy to breakdown within years by blast fungus that continually changes to adapt to new cultivars. Therefore, it is important to continuously monitor the incidence of rice blast disease and race differentiation of rice blast fungus in fields. In 2020, a severe rice blast disease occurred nationwide in Korea. We evaluated the incidence of rice blast disease in Yeoju and compared the weather conditions at the periods of rice blast disease in 2019 and 2020. We investigated the races and avirulence genes of rice blast isolates in Yeoju to identify race diversity and genetic characteristics of the isolates. This study will provide empirical support for rice blast control and the breeding of blast-resistant rice cultivars.
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Affiliation(s)
- Hyunjung Chung
- Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 16613,
Korea
| | - Da Gyeong Jeong
- Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 16613,
Korea
| | - Ji-Hyun Lee
- Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 16613,
Korea
| | - In Jeong Kang
- Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 16613,
Korea
| | - Hyeong-Kwon Shim
- Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 16613,
Korea
| | - Chi Jung An
- Yeoju-si Agricultural Technology Center, Yeoju 12653,
Korea
| | - Joo Yeon Kim
- Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 16613,
Korea
| | - Jung-Wook Yang
- Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 16613,
Korea
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18
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Kang IJ, Kim KS, Beattie GA, Chung H, Heu S, Hwang I. Characterization of Xanthomonas citri pv. glycines Population Genetics and Virulence in a National Survey of Bacterial Pustule Disease in Korea. Plant Pathol J 2021; 37:652-661. [PMID: 34897256 PMCID: PMC8666235 DOI: 10.5423/ppj.ft.11.2021.0164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/16/2021] [Accepted: 11/16/2021] [Indexed: 06/14/2023]
Abstract
Xanthomonas citri pv. glycines (Xcg) is a major pathogen of soybean (Glycine max) in South Korea, despite the availability of soybean varieties with some resistance. We conducted a nationwide survey of the incidence and severity of bacterial pustule caused by Xcg. The percentage of infected fields was 7% to 17% between 2015 and 2017. We characterized the diversity of a nationwide collection of 106 Xcg isolates based on avrBs3 banding patterns. The isolates fell into 11 groups, each represented by a type strain; only two of these were similar to isolates collected from 1999 to 2002. The diversity of Xcg strains increased and the dominant strains changed between 1999 and 2017, with three new type strains comprising 44% of the isolates examined in 2012 to 2017. Pathogenicity tests did not show evidence for a shift in the races or aggressiveness of Xcg strains. Korean soybean cultivars, including the widely-grown Daewon cultivar, were susceptible to the 11 new type strains. The cultivar CNS, which carries the rxp resistance gene, was susceptible to most type strains, including two representing 83% of the Korean Xcg strains. In contrast, Williams 82, which also carries rxp, showed resistance to at least five type strains. Collectively, these results suggest that Williams 82 has resistance loci in addition to rxp. The widespread distribution of Xcg, the high virulence of the current endemic strains, and the low resistance of most Korean soybean cultivars collectively favor widespread disease in Korea in years that are favorable to pustule development.
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Affiliation(s)
- In-Jeong Kang
- Division of Crop Cultivation and Environment Research, National Institute of Crop Science, Suwon 16613,
Korea
- Department of Agricultural Biotechnology, Seoul National University, Seoul 08826,
Korea
| | - Kyung Seok Kim
- Department of Natural Resource Ecology and Management, Iowa State University, Ames, IA 50011,
USA
| | - Gwyn A. Beattie
- Department of Plant Pathology and Microbiology, Iowa State University, Ames, IA 50011,
USA
| | - Hyunjung Chung
- Division of Crop Cultivation and Environment Research, National Institute of Crop Science, Suwon 16613,
Korea
| | - Sunggi Heu
- Department of Plant Science, Seoul National University, Seoul 08826,
Korea
| | - Ingyu Hwang
- Department of Agricultural Biotechnology, Seoul National University, Seoul 08826,
Korea
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19
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Lee E, Chung H, Lee Y, Lee EJ, Park Y, Kim Y, Park J, Ahn S, Kim J, Ahn K, Park K, Son W, Yeom D, Jung J, Won J, Oh S. 544P A novel HER2/4-1BB bispecific antibody, YH32367 (ABL105) exerts significant anti-tumor effects through tumor-directed T cell activation. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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20
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Lee T, Ryoo H, Lee R, Paeng J, Chung H, Kim H. PO-1779 Endoscopically Determined Gross Tumor Volume and Metabolic Tumor Volume in Esophageal Cancer. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)08230-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Chung H, Lee K, Kim W, Gainor J, Lakhani N, Chow L, Messersmith W, Fanning P, Squifflet P, Jin F, Forgie A, Wan H, Pons J, Randolph S, LoRusso P. SO-31 ASPEN-01: A phase 1 study of ALX148, a CD47 blocker, in combination with trastuzumab, ramucirumab and paclitaxel in patients with second-line HER2-positive advanced gastric or gastroesophageal junction cancer. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.05.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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22
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Strickler J, Nakamura Y, Shitara K, Catenacci D, Janjigian Y, Barzi A, Bekaii-Saab T, Lenz H, Lee J, Van Cutsem E, Chung H, Tabernero J, Yoshino T, Siena S, Garrido-Mayor J, Palanca-Wessels M, Xie D, Marshall J. P-174 MOUNTAINEER-02: Phase 2/3 study of tucatinib, trastuzumab, ramucirumab, and paclitaxel in previously treated HER2+ gastric or gastroesophageal junction adenocarcinoma: Trial in progress. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.05.229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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23
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Janjigian Y, Kawazoe A, Weber P, Luo S, Lonardi S, Kolesnik O, Barajas O, Bai Y, Shen L, Tang Y, Wyrwicz L, Shitara K, Qin S, Van Cutsem E, Tabernero J, Li L, Shih C, Bhagia P, Chung H. LBA-4 Initial data from the phase 3 KEYNOTE-811 study of trastuzumab and chemotherapy with or without pembrolizumab for HER2-positive metastatic gastric or gastroesophageal junction (G/GEJ) cancer. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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24
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Chung H, Villanueva L, Graham D, Saada-Bouzid E, Ghori R, Kubiak P, Gumuscu B, Lerman N, Gomez-Roca C. P-139 A phase 2 multicohort study (LEAP-005) of lenvatinib plus pembrolizumab in patients with previously treated selected solid tumors: Pancreatic cancer cohort. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.05.194] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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25
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Catenacci D, Koshiji Rosales M, Chung H, Yoon H, Moehler M, Kang Y, Shen L. P-138 Margetuximab combined with anti-PD-1 (retifanlimab) or anti-PD-1/LAG-3 (tebotelimab) +/- chemotherapy in first-line therapy of advanced/metastatic HER2+ gastroesophageal junction or gastric cancer. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.05.193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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26
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Kravetz L, Chung H, Guin KF, Shebs W, Smith LS. Primary and ultimate biodegradation of an alcohol ethoxylate and a nonylphenol ethoxylate under average winter conditions in the United States. TENSIDE SURFACT DET 2021. [DOI: 10.1515/tsd-1984-210102] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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27
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Shin K, Park K, Jeong S, Chung H. 580 Hair growth stimulation effects of b-catenin stimulating peptides through DKK-1 inhibition. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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28
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Chung H, Loblaw A, Tseng C, Murgic J, D'Alimonte L, Ravi A, Davidson M, Wronski M, Haider M, Morton G. PP-0162 MR-assisted whole salvage HDR prostate brachytherapy with intra-prostatic boost: a prospective study. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)06454-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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SIMMS E, Chung H, Oberding L, Muruve D, McDonald B, Bromley A, Pillai D, Chun J. POS-210 POST-MORTEM MOLECULAR INVESTIGATIONS OF SARS-COV-2 IN AN UNEXPECTED DEATH OF A RECENT KIDNEY TRANSPLANT RECIPIENT. Kidney Int Rep 2021. [PMCID: PMC8049651 DOI: 10.1016/j.ekir.2021.03.223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
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RAHMANI W, Sinha S, Chung H, Arora R, Jaffer A, Biernaskie J, Chun J. POS-389 PODOCYTE MATURATION IN HUMAN KIDNEY ORGANOIDS IS ACCELERATED WITH RENIN-ANGIOTENSIN SYSTEM ACTIVATION. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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31
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Chung H, Park CH, Kim YJ, Kim JY, Min PK, Yoon YW, Lee KA, Lee BK, Hong BK, Kim TH, Rim SJ, Kwon HM, Choi EY. Myocardial extracellular space expansion is related to burden of premature ventricular contractions in patients with hypertrophic cardiomyopathy without non-sustained ventricular tachycardia. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356.321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Current guidelines suggest the presence of non-sustained ventricular tachycardia (NSVT) as a risk factor of sudden cardiac death in patients with hypertrophic cardiomyopathy (HCM). However, high burden of premature ventricular contraction (PVC) may reflect myocardial fibrosis although the absence of NSVT.
Purpose
We investigated the association between PVC burden and myocardial extracellular space expansion in HCM patients without NSVT.
Methods
Of the 212 patients prospectively enrolled to the HCM registry of genetics, 84 patients were evaluated with both cardiac magnetic resonance and 24hr holter. Among them, 71 patients (58 males, mean age: 71 ± 13 years) have not been diagnosed with NSVT.
Results
Patients with NSVT (n = 13) showed more impaired LA functional indices and higher myocardial fibrosis burden compared with patients without NSVT (n = 71). Among patients who have not been diagnosed with NSVT, patients with late gadolinium enhancement (LGE, n = 46) had a higher total beats (109 ± 332 vs. 7 ± 13 beats per a day, p = 0.003) and burden (0.114 ± 0.225 vs. 0.008 ± 0.014 %, p = 0.003) of PVC during 24-hour compared with patients without LGE (n = 25). %LGE was correlated with total beats of PVC (r = 0.358, p = 0.002) and PVC burden (r = 0.377, p = 0.001). ECV also correlated with total beats of PVC (r = 0.387, p = 0.001) and PVC burden (r = 0.401, p = 0.001). The optimal cutoff value for PVC number was 45 (37.0% of sensitivity and 100% of specificity) with 0.733 of the area under the ROC curve (p < 0.001). Pathogenic or likely pathogenic sarcomere mutation was higher in NSVT group than no NSVT group (p < 0.05), and had a higher tendency in higher PVC burden group (0.05 < p < 0.1) than lower PVC burden group.
Conclusions
Total beats and burden of PVC are significantly related to increase in myocardial fibrosis in HCM patients without NSVT.
Abstract Figure. Mechanism of ventricular arrhythmia
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Affiliation(s)
- H Chung
- Kyung Hee Medical Center, Seoul, Korea (Republic of)
| | - CH Park
- Gangnam Severance Hospital, Seoul, Korea (Republic of)
| | - YJ Kim
- Gangnam Severance Hospital, Seoul, Korea (Republic of)
| | - JY Kim
- Gangnam Severance Hospital, Seoul, Korea (Republic of)
| | - PK Min
- Gangnam Severance Hospital, Seoul, Korea (Republic of)
| | - YW Yoon
- Gangnam Severance Hospital, Seoul, Korea (Republic of)
| | - KA Lee
- Gangnam Severance Hospital, Seoul, Korea (Republic of)
| | - BK Lee
- Gangnam Severance Hospital, Seoul, Korea (Republic of)
| | - BK Hong
- Gangnam Severance Hospital, Seoul, Korea (Republic of)
| | - TH Kim
- Gangnam Severance Hospital, Seoul, Korea (Republic of)
| | - SJ Rim
- Gangnam Severance Hospital, Seoul, Korea (Republic of)
| | - HM Kwon
- Gangnam Severance Hospital, Seoul, Korea (Republic of)
| | - EY Choi
- Gangnam Severance Hospital, Seoul, Korea (Republic of)
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Abstract
Molecular oxygen functions as an electron acceptor for aerobic respiration and a substrate for key metabolisms and cellular processes. Most eukaryotes develop direct or indirect oxygen sensors and reprogram transcriptional and translational metabolisms to adapt to altered oxygen availability under varying oxygen concentrations. Human fungal pathogens manipulate transcriptional levels of genes related to virulence as well as oxygen-dependent metabolisms such as ergosterol homeostasis when they are confronted with oxygen limitation (hypoxia) during infection. Oxygen states in plant tissues also vary depending on site, species, and external environment, potentially providing hypoxia to plant pathogens during infection. In this review, knowledge on the regulation of oxygen sensing and adaptive mechanisms in eukaryotes and nascent understanding of hypoxic responses in plant pathogens are summarized and discussed.
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Affiliation(s)
- Hyunjung Chung
- Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea
| | - Yong-Hwan Lee
- Department of Agricultural Biotechnology, Seoul National University, Seoul, South Korea.,Center for Fungal Genetic Resources, Plant Immunity Research Center, and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
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33
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Alsabbagh MW, Kueper JK, Wong ST, Burge F, Johnston S, Peterson S, Lawson B, Chung H, Bennett M, Blackman S, McGrail K, Campbell J, Hogg W, Glazier R. Development of comparable algorithms to measure primary care indicators using administrative health data across three Canadian provinces. Int J Popul Data Sci 2020; 5:1340. [PMID: 33644408 PMCID: PMC7893851 DOI: 10.23889/ijpds.v5i1.1340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
INTRODUCTION Performance measurement has been recognized as key to transforming primary care (PC). Yet, performance reporting in PC lags behind even though high-performing PC is foundational to an effective and efficient health care system. OBJECTIVES We used administrative data from three Canadian provinces, British Columbia, Ontario and Nova Scotia, to: 1) identify and develop a core set of PC performance indicators using administrative data and 2) examine their ability to capture PC performance. METHODS Administrative data used included Physician Billings, Discharge Abstract Database, the National Ambulatory Care and Reporting System database, Census and Vital Statistics. Indicators were compiled based on a literature review of PC indicators previously developed with administrative data available in Canada (n=158). We engaged in iterative discussions to assess data conformity, completeness, and plausibility of results in all jurisdictions. Challenges to creating comparable algorithms were examined through content analysis and research team discussions, which included clinicians, analysts, and health services researchers familiar with PC. RESULTS Our final list included 21 PC performance indicators pertaining to 1) technical care (n=4), 2) continuity of care (n=6), and 3) health services utilization (n=11). Establishing comparable algorithms across provinces was possible though time intensive. A major challenge was inconsistent data elements. Ease of data access, and a deep understanding of the data and practice context, was essential for selecting the most appropriate data elements. CONCLUSIONS This project is unique in creating algorithms to measure PC performance across provinces. It was essential to balance internal validity of the indicators within a province and external validity across provinces. The intuitive desire of having the exact same coding across provinces was infeasible due to lack of standardized PC data. Rather, a context-tailored definition was developed for each jurisdiction. This work serves as an example for developing comparable PC performance indicators across different provincial/territorial jurisdictions.
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Affiliation(s)
| | | | - ST Wong
- University of British Columbia
| | | | - S Johnston
- Bruyère Research Institute, University of Ottawa
| | | | | | | | | | | | | | | | - W Hogg
- University of Ottawa, Montfort Hospital Research Institute
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34
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Patel U, Blackmore M, Stein D, Carleton K, Chung H. Costs and Utilization for Low Income Minority Patients with Depression in a Collaborative Care Model Implemented in a Community‐Based Academic Health System. Health Serv Res 2020. [DOI: 10.1111/1475-6773.13482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Affiliation(s)
- U. Patel
- Albert Einstein College of Medicine Bronx NY United States
| | - M. Blackmore
- Montefiore Medical Center Bronx NY United States
| | - D. Stein
- Montefiore Medical Center Bronx NY United States
| | - K. Carleton
- Montefiore Medical Center Bronx NY United States
| | - H. Chung
- Montefiore Medical Center Bronx NY United States
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Chung H, Goh J, Han SS, Roh JH, Kim Y, Heu S, Shim HK, Jeong DG, Kang IJ, Yang JW. Comparative Pathogenicity and Host Ranges of Magnaporthe oryzae and Related Species. Plant Pathol J 2020; 36:305-313. [PMID: 32788889 PMCID: PMC7403518 DOI: 10.5423/ppj.ft.04.2020.0068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 06/27/2020] [Accepted: 07/07/2020] [Indexed: 06/11/2023]
Abstract
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 expansion in nature. These results provide important information on the diversification of M. oryzae and related species with a broad range of Poaceae as hosts in crop fields.
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Affiliation(s)
- Hyunjung Chung
- Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 16613, Korea
| | - Jaeduk Goh
- Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 16613, Korea
| | - Seong-Sook Han
- Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 16613, Korea
| | - Jae-Hwan Roh
- Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration, Muan 58545, Korea
| | - Yangseon Kim
- Center for Industrialization of Agricultural and Livestock Microorganisms, Jeongeup 56212, Korea
| | - Sunggi Heu
- Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 16613, Korea
| | - Hyeong-Kwon Shim
- Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 16613, Korea
| | - Da Gyeong Jeong
- Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 16613, Korea
| | - In Jeong Kang
- Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 16613, Korea
| | - Jung-Wook Yang
- Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 16613, Korea
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36
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Shin K, Shin K, Yoon S, Jung J, Hwang E, Chung H, Lee S, Jeong S. 757 Clinical efficacy of topical autophagy activator on acne-prone skin. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.03.771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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37
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Völz R, Park JY, Kim S, Park SY, Harris W, Chung H, Lee YH. The rice/maize pathogen Cochliobolus spp. infect and reproduce on Arabidopsis revealing differences in defensive phytohormone function between monocots and dicots. Plant J 2020; 103:412-429. [PMID: 32168401 DOI: 10.1111/tpj.14743] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 02/11/2020] [Accepted: 03/09/2020] [Indexed: 06/10/2023]
Abstract
The fungal genus Cochliobolus describes necrotrophic pathogens that give rise to significant losses on rice, wheat, and maize. Revealing plant mechanisms of non-host resistance (NHR) against Cochliobolus will help to uncover strategies that can be exploited in engineered cereals. Therefore, we developed a heterogeneous pathosystem and studied the ability of Cochliobolus to infect dicotyledons. We report here that C. miyabeanus and C. heterostrophus infect Arabidopsis accessions and produce functional conidia, thereby demonstrating the ability to accept Brassica spp. as host plants. Some ecotypes exhibited a high susceptibility, whereas others hindered the necrotrophic disease progression of the Cochliobolus strains. Natural variation in NHR among the tested Arabidopsis accessions can advance the identification of genetic loci that prime the plant's defence repertoire. We found that applied phytotoxin-containing conidial fluid extracts of C. miyabeanus caused necrotic lesions on rice leaves but provoked only minor irritations on Arabidopsis. This result implies that C. miyabeanus phytotoxins are insufficiently adapted to promote dicot colonization, which corresponds to a retarded infection progression. Previous studies on rice demonstrated that ethylene (ET) promotes C. miyabeanus infection, whereas salicylic acid (SA) and jasmonic acid (JA) exert a minor function. However, in Arabidopsis, we revealed that the genetic disruption of the ET and JA signalling pathways compromises basal resistance against Cochliobolus, whereas SA biosynthesis mutants showed a reduced susceptibility. Our results refer to the synergistic action of ET/JA and indicate distinct defence systems between Arabidopsis and rice to confine Cochliobolus propagation. Moreover, this heterogeneous pathosystem may help to reveal mechanisms of NHR and associated defensive genes against Cochliobolus infection.
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Affiliation(s)
- Ronny Völz
- Plant Immunity Research Center, Seoul National University, Seoul, 08826, Korea
| | - Ju-Young Park
- Department of Agricultural Biotechnology, Seoul National University, Seoul, 08826, Korea
- R&D Institute, YUHAN Inc., Yongin, 17084, Korea
| | - Soonok Kim
- Genetic Resources Assessment Division, National Institute of Biological Resources, Incheon, 22689, Korea
| | - Sook-Young Park
- Department of Plant Medicine, Suncheon National University, Suncheon, 57922, Korea
| | - William Harris
- Department of Agricultural Biotechnology, Seoul National University, Seoul, 08826, Korea
| | - Hyunjung Chung
- Department of Agricultural Biotechnology, Seoul National University, Seoul, 08826, Korea
| | - Yong-Hwan Lee
- Plant Immunity Research Center, Seoul National University, Seoul, 08826, Korea
- Department of Agricultural Biotechnology, Seoul National University, Seoul, 08826, Korea
- Center for Fungal Genetic Resources, Seoul National University, Seoul, 08826, Korea
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Korea
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38
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Yoon H, Fuchs C, Özgüroğlu M, Bang Y, Bartolomeo MD, Mandala M, Ryu M, Fornaro L, Olesinski T, Caglevic C, Chung H, Muro K, Cutsem EV, Elme A, Thuss-Patience P, Chau I, Ohtsu A, Wang A, Bhagia P, Lin J, Shih C, Shitara K. O-12 KEYNOTE-061: Response to subsequent therapy following second-line pembrolizumab or paclitaxel in patients with advanced gastric or gastroesophageal junction adenocarcinoma. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.04.065] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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39
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Catenacci D, Rosales MK, Chung H, Yoon H, Shen L, Moehler M, Kang Y. P-342 Margetuximab combined with anti-PD-1 (MGA012) or anti-PD-1/LAG-3 (MGD013) +/- chemotherapy in first-line therapy of advanced/metastatic HER2+ gastroesophageal junction or gastric cancer. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.04.424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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40
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Park SY, Jeon J, Kim JA, Jeon MJ, Jeong MH, Kim Y, Lee Y, Chung H, Lee YH, Kim S. Draft Genome Sequence of Alternaria alternata JS-1623, a Fungal Endophyte of Abies koreana. Mycobiology 2020; 48:240-244. [PMID: 37970559 PMCID: PMC10635108 DOI: 10.1080/12298093.2020.1756134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 03/31/2020] [Accepted: 04/08/2020] [Indexed: 11/17/2023]
Abstract
Alternaria alternata JS-1623 is an endophytic fungus isolated from a stem tissue of Korean fir, Abies koreana. Ethyl acetate extracts of culture filtrates exhibited anti-inflammatory activity in LPS induced microglia BV-2 cell without cytotoxicity. Here we report a 33.67 Mb sized genome assembly of JS-1623 comprised of 13 scaffolds with N50 of 4.96 Mb, and 92.41% of BUSCO completeness. GC contents were 50.97%. Of the 11,197 genes annotated, gene families related to the biosynthesis of secondary metabolites or transcription factors were identified.
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Affiliation(s)
- Sook-Young Park
- Department of Plant Medicine, Sunchon National University, Suncheon, Korea
| | - Jongbum Jeon
- Department of Agricultural Biotechnology, Interdisciplinary Program in Agricultural Genomics, Center for Fungal Genetic Resources, and Center for Fungal Pathogenesis, Seoul National University, Seoul, Korea
| | - Jung A. Kim
- Microbiology Resources Division, National Institute of Biological Resources, Incheon, Korea
| | - Mi Jin Jeon
- Microbiology Resources Division, National Institute of Biological Resources, Incheon, Korea
| | - Min-Hye Jeong
- Department of Plant Medicine, Sunchon National University, Suncheon, Korea
| | - Youngmin Kim
- Department of Plant Medicine, Sunchon National University, Suncheon, Korea
| | - Yerim Lee
- Department of Plant Medicine, Sunchon National University, Suncheon, Korea
| | - Hyunjung Chung
- Department of Agricultural Biotechnology, Interdisciplinary Program in Agricultural Genomics, Center for Fungal Genetic Resources, and Center for Fungal Pathogenesis, Seoul National University, Seoul, Korea
| | - Yong-Hwan Lee
- Department of Agricultural Biotechnology, Interdisciplinary Program in Agricultural Genomics, Center for Fungal Genetic Resources, and Center for Fungal Pathogenesis, Seoul National University, Seoul, Korea
| | - Soonok Kim
- Microbiology Resources Division, National Institute of Biological Resources, Incheon, Korea
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41
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Chung H, Kim S, Kim KT, Hwang BG, Kim HJ, Lee SJ, Lee YH. A novel approach to investigate hypoxic microenvironment during rice colonization by Magnaporthe oryzae. Environ Microbiol 2020; 21:1151-1169. [PMID: 30773773 DOI: 10.1111/1462-2920.14563] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Accepted: 02/13/2019] [Indexed: 01/22/2023]
Abstract
Because molecular oxygen functions as the final acceptor of electrons during aerobic respiration and a substrate for diverse enzymatic reactions, eukaryotes employ various mechanisms to maintain cellular homeostasis under varying oxygen concentration. Human fungal pathogens change the expression of genes involved in virulence and oxygen-required metabolisms such as ergosterol (ERG) synthesis when they encounter oxygen limitation (hypoxia) during infection. The oxygen level in plant tissues also fluctuates, potentially creating hypoxic stress to pathogens during infection. However, little is known about how in planta oxygen dynamics impact pathogenesis. In this study, we investigated oxygen dynamics in rice during infection by Magnaporthe oryzae via two approaches. First, rice leaves infected by M. oryzae were noninvasively probed using a microscopic oxygen sensor. Second, an immunofluorescence assay based on a chemical probe, pimonidazole, was used. Both methods showed that oxygen concentration in rice decreased after fungal penetration. We also functionally characterized five hypoxia-responsive genes participating in ERG biosynthesis for their role in pathogenesis. Resulting insights and tools will help study the nature of in planta oxygen dynamics in other pathosystems.
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Affiliation(s)
- Hyunjung Chung
- Department of Agricultural Biotechnology, Seoul National University, Seoul 08826, South Korea
| | - Seongbeom Kim
- Department of Agricultural Biotechnology, Seoul National University, Seoul 08826, South Korea
| | - Ki-Tae Kim
- Department of Agricultural Biotechnology, Seoul National University, Seoul 08826, South Korea
| | - Bae-Geun Hwang
- Department of Mechanical Engineering, Center for Biofluid and Biomimic Research, Pohang University of Science and Technology, Pohang 37673, South Korea
| | - Hye-Jeong Kim
- Department of Mechanical Engineering, Center for Biofluid and Biomimic Research, Pohang University of Science and Technology, Pohang 37673, South Korea
| | - Sang-Joon Lee
- Department of Mechanical Engineering, Center for Biofluid and Biomimic Research, Pohang University of Science and Technology, Pohang 37673, South Korea
| | - Yong-Hwan Lee
- Department of Agricultural Biotechnology, Seoul National University, Seoul 08826, South Korea.,Center for Fungal Genetic Resources, Plant Immunity Research Center, and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, South Korea
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42
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Jeon J, Lee GW, Kim KT, Park SY, Kim S, Kwon S, Huh A, Chung H, Lee DY, Kim CY, Lee YH. Transcriptome Profiling of the Rice Blast Fungus Magnaporthe oryzae and Its Host Oryza sativa During Infection. Mol Plant Microbe Interact 2020; 33:141-144. [PMID: 31634040 DOI: 10.1094/mpmi-07-19-0207-a] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The rice blast (fungal pathogen: Magnaporthe oryzae and host: Oryza sativa) is one of the most important model pathosystems for understanding plant-microbe interactions. Although both genome sequences were published as the first cases of pathogen and host, only a few in planta transcriptome data during infection are available. Due to technical difficulties, previously reported fungal transcriptome data are not highly qualified to comprehensively profile the expression of fungal genes during infection. Here, we report the high-quality transcriptomes of M. oryzae and rice during infection using a sheath infection-based RNA sequencing approach. This comprehensive expression profiling of the fungal pathogen and its host will provide a better platform for understanding the plant-microbe interactions at the genomic level and serve as a valuable resource for the research community.
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Affiliation(s)
- Jongbum Jeon
- Interdisciplinary Program in Agricultural Genomics, Seoul National University, Seoul, 08826, South Korea
| | - Gir-Won Lee
- Department of Agricultural Biotechnology, Seoul National University
| | - Ki-Tae Kim
- Department of Agricultural Biotechnology, Seoul National University
| | - Sook-Young Park
- Department of Plant Medicine, College of Life Science and Natural Resources, Sunchon National University, Suncheon, 57922, South Korea
| | - Seongbeom Kim
- Department of Agricultural Biotechnology, Seoul National University
| | - Seomun Kwon
- Department of Agricultural Biotechnology, Seoul National University
| | - Aram Huh
- Department of Agricultural Biotechnology, Seoul National University
| | - Hyunjung Chung
- Department of Agricultural Biotechnology, Seoul National University
| | - Da-Young Lee
- Department of Agricultural Biotechnology, Seoul National University
| | - Chi-Yeol Kim
- Department of Agricultural Biotechnology, Seoul National University
| | - Yong-Hwan Lee
- Interdisciplinary Program in Agricultural Genomics, Seoul National University, Seoul, 08826, South Korea
- Department of Agricultural Biotechnology, Seoul National University
- Center for Fungal Genetic Resources, Plant Immunity Research Center, and Research Institute of Agriculture and Life Sciences, Seoul National University
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43
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Kang Y, Chin K, Chung H, Kadowaki S, Oh S, Nakayama N, Lee K, Hara H, Chung I, Tsuda M, Park S, Hosaka H, Hironaka S, Miyata Y, Ryu M, Takeuchi M, Baba H, Hyodo I, Bang Y, Boku N. A phase III study of TAS-118 plus oxaliplatin versus S-1 plus cisplatin as first-line chemotherapy in patients with advanced gastric cancer (SOLAR study). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz183.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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44
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Tabernero J, Van Cutsem E, Bang Y, Fuchs C, Wyrwicz L, Lee K, Kudaba I, Garrido M, Chung H, Castro Salguero H, Mansoor W, Braghiroli M, Goekkurt E, Chao J, Wainberg Z, Kher U, Shah S, Kang S, Shitara K. Pembrolizumab with or without chemotherapy versus chemotherapy for first-line treatment of advanced gastric or gastroesophageal junction (G/GEJ) adenocarcinoma: The Phase 3 KEYNOTE-062 Study. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz183.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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45
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Chung H, Bang Y, Fuchs C, Qin S, Satoh T, Shitara K, Tabernero J, Van Cutsem E, Cao Z, Chen X, Kang S, Shih C, Janjigian Y. KEYNOTE-811 pembrolizumab plus trastuzumab and chemotherapy for HER2+ metastatic gastric or gastroesophageal junction cancer: a double-blind, randomized, placebo-controlled phase 3 study. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz155.093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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46
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Song H, Kang E, Soh H, Chung H, Chun J, Yoon S, Ijaz U, Koh Y. MULTI-OMICS APPROACHES TO UNDERSTAND GASTRIC MUCOSA-ASSOCIATED LYMPHOID TISSUE (MALT) LYMPHOMA. Hematol Oncol 2019. [DOI: 10.1002/hon.2631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- H. Song
- Cancer Research Institute; Seoul National University College of Medicine; Seoul Republic of Korea
| | - E. Kang
- Department of Internal Medicine; Seoul National University Hospital; Seoul Republic of Korea
| | - H. Soh
- Department of Internal Medicine; Seoul National University Hospital; Seoul Republic of Korea
| | - H. Chung
- Department of Internal Medicine; Seoul National University Hospital; Seoul Republic of Korea
| | - J. Chun
- Department of Internal Medicine; Seoul National University Hospital; Seoul Republic of Korea
| | - S. Yoon
- Department of Internal Medicine; Seoul National University Hospital; Seoul Republic of Korea
| | - U. Ijaz
- School of Engineering; University of Glasgow; Glasgow United Kingdom
| | - Y. Koh
- Department of Internal Medicine; Seoul National University Hospital; Seoul Republic of Korea
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47
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Friedland M, Chung H, McGee J. 1042 Characterizing Imiquimod (IMQ)-induced psoriasis-like dermatitis in BALB/c mice: Application in dermatology research. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.1118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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48
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Shin K, Yoon S, Jung J, Hwang E, Jeong S, Chung H, Park K. 466 Stimulation of autophagy attenuated Propionibacterium acnes-induced inflammatory responses in cultured skin cells. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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49
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Alayed Y, Cheung P, Chu W, Chung H, Davidson M, Ravi A, Helou J, Zhang L, Mamedov A, Commisso A, Commisso K, Loblaw A. PO-0840 Two StereoTactic Ablative Radiotherapy Treatments for Localized Prostate Cancer (2STAR). Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31260-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Chung H, Lang P, Kayvanrad M, Thompson R, Chu W, Gennatas E, Valdes G, Cheung P. EP-1453 Machine learning prediction of early distant progression after SBRT for colorectal cancer. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31873-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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