http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Ji-Hui Byeon,Su-Hee Jeon,Woo-Li Ko,Moung-Su Kim,Joon-Hyeong Cho 한국작물학회 2010 한국작물학회 학술발표대회 논문집 Vol.2010 No.04
Until now many strategies have been used to produce marker-free transgenic plants such as co-transformation with negative selectable markers, site-specific recombination system, transposable elements mediated transformation, and etc. In this research, embryogenic calli induced from japonica rices, Ilmibyeo and Dongjinbyeo, were tranformed with the vector which simultaneously constructed with cre/loxP and argE genes in T-DNA. Transformation efficiencies were comparably lower than those of our previous studies, since the constructed genome size was relatively big (>10Kb). For eliminate the transformed tissues which contained positive selectable marker gene, tunicamycin was treated at regeneration and selection stages, since cre recombinase gene is expressed under the presence of this antibiotics. The plants were selected first under 50 mg․L-1 hygromycin at 28℃ for 2 weeks after the Agrobacterium-infection at 25℃ for 7 days. And then, the regeneration plants were successfully obtained on MS basal regeneration medium containing 0.1 mg․L-1 tunicamycin. The regenerated plants are now acclimatizing in greenhouse and molecular analysis are currently accomplished with these plants.
Sang-a Park,Gihwan Byeon,Jin Hyeong Jhoo,Hyung-Chun Kim,Myoung-Nam Lim,Jae-Won Jang,Jong Bin Bae,Ji Won Han,Tae Hui Kim,Kyung Phil Kwak,Bong Jo Kim,Shin Gyeom Kim,Jeong Lan Kim,Seok Woo Moon,Joon Hyuk 대한정신약물학회 2023 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.21 No.4
Objective: To investigate the relationship between reduced glutathione (GSH), a key molecule of the antioxidant defense system in the blood, and glutathione reductase (GR), which reduces oxidized glutathione (glutathione disulfide [GSSG]) to GSH and maintains the redox balance, with the prevalence of Alzheimer’s dementia and cognitive decline. Methods: In all, 20 participants with Alzheimer’s dementia who completed the third follow-up clinical evaluation over 6 years were selected, and 20 participants with normal cognition were selected after age and sex matching. The GSH and GR concentrations were the independent variables. Clinical diagnosis and neurocognitive test scores were the dependent variables indicating cognitive status. Results: The higher the level of GR, the greater the possibility of having normal cognition than of developing Alzheimer’s dementia. Additionally, the higher the level of GR, the higher the neurocognitive test scores. However, this association was not significant for GSH. After 6 years, the conversion rate from normal cognition to cognitive impairment was significantly higher in the lower 50th percentile of the GR group than in the upper 50th percentile. Conclusion: The higher the GR, the lower the prevalence of Alzheimer’s dementia and incidence of cognitive impairment and the higher the cognitive test scores. Therefore, GR is a potential protective biomarker against Alzheimer’s dementia and cognitive decline.
Effects of BAP and NAA on Plant Regeneration from Flower Bud of Atractylodes macrocephala
Woo-Li Ko,Ji-Hui Byeon,Su-Hee Jeon,Moung-Su Kim,Joon-Hyeong Cho 한국작물학회 2010 한국작물학회 학술발표대회 논문집 Vol.2010 No.04
This research was conducted to identify the effect of BAP and NAA on plant regeneration from flower bud of A. macrocephala. Flower buds the plant were used as target explants for tissue culture. Plant tissues were sterilized with each 45ml of 50% ethanol and 0.8% sodium hypochlorite containing 20ul of Tween20 for each 5 minutes, respectively, and then washed 5 times with sterile distilled water. Four pieces of the sterilized explants were cultured in a petri-dish at 25±2℃ under 16hr/day light condition. LS basal medium and BAP (0.2 and 2 mg·L-1) and NAA (0.2 and 2 mg·L-1) were used for the experiment. When the target explants were cultured on the media containing both BAP and NAA, explants of the flower buds were swelled about 15~25mm long and then calli were induced from receptacles at about 20 days after planting. However, there were no significant differences between the concentrations of the phytohormones. In results, normal shoots were successfully regenerated on the media supplemented with 2 mg·L-1 BAP and 0.2 mg·L-1 NAA prior to root induction. However, under the conditions of 0.2 mg·L-1 BAP and 2 mg·L-1 NAA, only roots were induced from the calli instead of shoot regeneration.