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Goh Jaeduk,Oh Yoosun,Park Young-Hwan,Mun Hye Yeon,Park Sangkyu,Cheon Wonsu 한국균학회 2022 韓國菌學會誌 Vol.50 No.1
Hypocreales is one of the largest orders within the class Sordariomycetes in Ascomycota. Several species of this order are cosmopolitan and have a broad range of habitats. Here, we isolated several fungal strains from environmental samples, including freshwater sediment and plant litter. The strains were identified via molecular and phylogenetic analyses of rDNA and other DNA markers, such as TUB , RPB2 , and EF1 . The morphological characteristics of the fungi were investigated using microscopy, and culture characteristics were assessed from their growth on several media. We identified 17 species previously unrecorded in Korea: Dactylonectria hordeicola, Flavocillium bifurcatum, Fusarium luffae, Ilyonectria ilicicola, Ilyonectria qitaiheensis, Ilyonectria robusta, Lecanicillium aphanocladii, Nectria ulmicola, Neonectria lugdunensis, Ovicillium oosporum, Pseudonectria foliicola, Sarocladium spinificis, Scolecofusarium ciliatum, Trichoderma appalachiense, Trichoderma subviride, Trichoderma taiwanense, and Trichoderma tsugarense. Hypocreales is one of the largest orders within the class Sordariomycetes in Ascomycota. Several species of this order are cosmopolitan and have a broad range of habitats. Here, we isolated several fungal strains from environmental samples, including freshwater sediment and plant litter. The strains were identified via molecular and phylogenetic analyses of rDNA and other DNA markers, such as , , and . The morphological characteristics of the fungi were investigated using microscopy, and culture characteristics were assessed from their growth on several media. We identified 17 species previously unrecorded in Korea: Dactylonectria hordeicola, Flavocillium bifurcatum, Fusarium luffae, Ilyonectria ilicicola, Ilyonectria qitaiheensis, Ilyonectria robusta, Lecanicillium aphanocladii, Nectria ulmicola, Neonectria lugdunensis, Ovicillium oosporum, Pseudonectria foliicola, Sarocladium spinificis, Scolecofusarium ciliatum, Trichoderma appalachiense, Trichoderma subviride, Trichoderma taiwanense, and Trichoderma tsugarense.
Growth regulation of cow1 rice mutant seedlings by blue light
Goh, Chang-Hyo,Ko, Suk-Min,Park, Hee-Yeon,Kim, Yeon-Ki,Kim, Yong-Woo,Kim, Young-Joo,Sun, Hyeon-Jin,Moon, Yong-Hwan,Lee, Hyo-Yeon The Korean Society of Plant Biotechnology 2010 식물생명공학회지 Vol.37 No.4
We assessed whether the cow1 mutant defects are associated with growth of Tos17 and T-DNA insertional rice in blue light (BL). Growth of oscow1 mutants which encoded a member of the YUCCA protein family was retarded in BL. Root to shoot ratios of the mutants were reduced about 2 times lower in the absence of NAA and about 2.5 times lower in the presence of NAA; the shoot growth was not significantly changed by NAA addition. Photosynthetic activity of the mutants was however inhibited in high light. Pigment analysis showed significant difference between wild-type (Chl a:b = 3.02) and mutants (3.84). Carotenoid contents of the mutants were also decreased considerably, implying the involvement of cow1 in pigment formation. These findings lead us to suggest that the growth retardation of oscow1 mutant plants by BL results from the difference of photosynthetic activity in part.
( Goh Eun Chung ),( Eun Ju Cho ),( Jeong-hoon Lee ),( Jeong-ju Yoo ),( Minjong Lee ),( Yuri Cho ),( Dong Hyeon Lee ),( Hwi Young Kim ),( Su Jong Yu ),( Yoon Jun Kim ),( Jung-hwan Yoon ),( Fabien Zouli 대한간학회 2017 Clinical and Molecular Hepatology(대한간학회지) Vol.23 No.1
Background/Aims: A recent study reported that entecavir had inferior efficacy in nucleos(t)ide analogue (NA)-experienced chronic hepatitis B (CHB) patients compared to NA-naive patients. We sought to compare the efficacy of tenofovir disoproxil fumarate (TDF) in NA-experienced and NA-naive CHB patients. Methods: We retrospectively enrolled 252 consecutive patients who had a serum hepatitis B virus (HBV) DNA level greater than 2,000 IU/mL at the initiation of TDF treatment and who received TDF for at least 6 months. Complete virologic suppression (CVS) was defined as undetectable serum HBV DNA. We generated a multivariate Cox proportional-hazard model to examine predictive factors that were independently associated with time to CVS. Results: The mean age of patients was 48.2 years, and the cohort included 181 NA-naive patients and 71 NA-experienced patients. The median duration of TDF treatment was 14.4 (interquartile range, 9.5-17.8) months. A total of 167 (92.3%) of 181 NA-naive patients achieved CVS, and 60 (84.5%) of 71 NA-exposed patients achieved CVS. Forty-nine (89.1%) of 55 patients who previously took an NA aside from adefovir and 11 (68.8%) of 16 adefovir-experienced patients achieved CVS. In multivariable analysis, previous adefovir exposure significantly influenced time to CVS (hazard ratio, 0.37; 95% confidence interval, 0.19-0.72; P=0.003), after adjusting for HBeAg positivity, baseline HBV DNA level and cirrhosis. Conclusions: Tenofovir had inferior efficacy in adefovir-experienced CHB patients compared to NA-naive patients. The response of patients with previous adefovir exposure to TDF monotherapy should be monitored closely. (Clin Mol Hepatol 2017;23:66-73)
Chung, Goh Eun,Lee, Jeong-Hoon,Kim, Hwi Young,Hwang, Sang Youn,Kim, Joon Suk,Chung, Jin Wook,Yoon, Jung-Hwan,Lee, Hyo-Suk,Kim, Yoon Jun Radiological Society of North America 2011 Radiology Vol.258 No.2
<P>Purpose: To determine the efficacy and safety of transarterial chemoembolization (TACE) in patients with hepatocellular carcinoma (HCC) and main portal vein (MPV) invasion. Materials and Methods: This study was approved by the institutional review board, and the requirement to obtain informed consent was waived. The authors retrospectively assessed the electronic medical records of patients in whom HCC with MPV invasion was newly diagnosed from January 2004 to December 2007 at a single tertiary medical center. Patients with decompensated hepatic function were excluded. Outcomes of patients treated with TACE were compared with those of patients given supportive care according to Child-Pugh class. Results: One hundred twenty-five patients (104 men and 21 women; mean age, 55.7 years; age range, 33.4-83.0 years) were included. The median overall survival was 3.7 months (range, 0.2-33.3 months). Eighty-three of the 125 patients (66.4%) were treated with TACE and 42 (33.6%) received supportive care. Repeated TACE showed significant survival benefits compared with supportive care in patients with Child-Pugh class A (median survival, 7.4 months vs 2.6 months, respectively; P < .001) and class B (median survival, 2.8 months vs 1.9 months, respectively; P = .002) disease. Results of multivariate analysis showed that treatment with TACE (hazard ratio, 0.263; 95% confidence interval [CI]: 0.164, 0.424; P < .001) and Child-Pugh class A status (hazard ratio, 0.550; 95% CI: 0.368, 0.822; P = .004) were independent predictive factors of a favorable outcome. There were no procedure-related deaths within 4 weeks after TACE, and patient morbidity was 28.9% (24 of 83 patients). Conclusion: TACE can be performed safely and may improve the overall survival of patients with HCC and MPV invasion. © RSNA, 2011.</P>
( Jaeduk Goh ),( Yu-jeong Jeon ),( Hye Yeon Mun ),( Namil Chung ),( Young-hwan Park ),( Sangkyu Park ),( Hyejin Hwang ),( Wonsu Cheon ) 한국균학회 2020 韓國菌學會誌 Vol.48 No.4
Freshwater fungi are a poly-phylogenetic group of taxonomically diverse organisms. In this study, we isolated diverse fungal strains from various environmental samples obtained from freshwaters in Korea. These strains were identified by performing molecular phylogenetic analyses of rDNA and/or other sequences (beta-tubulin, RNA polymerase II, and translation elongation factor 1). In addition, we examined their morphological characteristics microscopically and cultural characteristics using different media. We identified eleven unrecorded Pezizomycotina species: Cladosporium angulosum , Pseudorobillarda phragmitis, Paraconiothyrium estuarinum, Pseudopithomyces palmicola, Pyrenochaetopsis paucisetosa, Thelebolus globosus, Plagiostoma mejianum, Trichoderma cremeum, Fusarium tanahbumbuense , Coniochaeta endophytica , and Chaetomium tenue . Environmental samples obtained from different freshwater ecosystems in Korea could thus be a good source for isolating and investigating novel fungal species.
A New Single Cross Maize Hybrid for Silage and Grains, "Gangilok"
Si Hwan Ryu,Hwang Kee Min,Ki Jin Park,Jong Yeol Park,Byeong Dae Goh,Jeong Sik Seo,An Soo Lee,Jin Sun Jang,Beom Young Son,Hyeon Gui Moon 한국육종학회 2007 한국육종학회지 Vol.39 No.1
A single cross hybrid “Gangilok” is an yellow semi-dent maize (Zea mays L.) developed by the Maize Experiment Station at Gangwon-do Agricultural Research and Extension Services in 2005. “Gangilok” has high yield of dry matter, total digestible nutrients (