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Dongjin Shin,Soo-Kwon Park,Un-Ha Hwang,Dong-Soo Park 한국육종학회 2012 한국육종학회 심포지엄 Vol.2012 No.07
Glycolysis is responsible for the conversion of glucose into pyruvate and for supplying reducing power and several metabolites. Fructose-1,6-bisphosphate aldolase (AtFBA1), a central enzyme in the glycolysis pathway, was isolated by functional complementation of the salt-sensitive phenotype of a calcineurin (CaN)-deficient yeast mutant. Under high salinity conditions, aldolase activity and the concentration of NADH were compromised. However, expression of AtFBA1 maintained aldolase activity and the NADH level in yeast cells. AtFBA1 shares a high degree of sequence identity with known class I type aldolases, and its expression was negatively regulated by stress conditions including NaCl. The fusion protein GFP-AtFBA1 was localized in the cytosol of Arabidopsis protoplasts. The seed germination and root elongation of AtFBA1 knock-out plants exhibited sensitivity to ABA and salt stress. These results indicate that AtFBA1 expression and aldolase activity is important for stress tolerance in yeast and plants.
Screening of rice drought tolerant germplasms and drought tolerant QTL mapping
Dongjin Shin,Tae-Heon Kim,Sang-Ik Han,Ji-Yoon Lee,Youngbo Son,Sung Hwan Oh,Yeon-Jae Hur,Saisbeul Lee,Jun-Hyun Cho,Jong-Hee Lee,You-Chun Song,Min-Hee Nam,Dong-Soo Park,Yeong-Up Kwon 한국육종학회 2015 한국육종학회 심포지엄 Vol.2015 No.07
In here, we screened drought tolerant varieties with modified leaf water loss rate assay and visual drought tolerant phenotype in the greenhouse conditions with more than 800 varieties. Among these varieties, Samgang, Gumei4 and Apo showed the lowest of leaf water loss rate and strong drought tolerant phenotype. To identify drought QTLs with Samgang variety, we developed the doubled-haploid (DH) population consist of 101 lines derived from a cross the drought tolerant cultivar Samgang and the drought sensitive cultivar Nagdong. To score the drought phenotype degrees of this population, we withheld water for 6 weeks and treated the watering for 7 days. After watering, visual phenotype was observed 1 to 9 degree according to the standard evaluation system for rice, IRRI. Drought sensitive parent Nagdong was almost died and was scored as 9 degree, while tolerant parent Samgang showed slightly leaf tip drying phenotype and was scored as 3 degree in our experimental conditions. Three main QTLs were detected on chromosome 2, 6, and 11 with this visual phenotype. We also measured relative water contend of these population under drought stress conditions, and got one main QTL on chromosome 11. The QTL loci on chromosome 11 with flanking markers RM26755-RM287 has a function for visual phenotype and relative water content under drought conditions.
Dongjin Shin,Soo-Kwon Park,Un-Ha Hwang,Jong-Hee Lee,Sang-Ik Han,Min-Hee Nam,Dong-Soo Park 한국육종학회 2013 한국육종학회 심포지엄 Vol.2013 No.07
Understanding salt tolerance mechanisms is important for the increase of crop yields, and so, several screening approaches were developed to identify plant genes which are involved in salt tolerance of plants. Here, we transformed the Arabidopsis cDNA library into a salt-sensitive calcineurin (CaN)-deficient (cnbD) yeast mutant and isolated the colonies which can suppress salt-sensitive phenotype of cnbD mutant. Through this functional complementation screen, a total of 34 colonies functionally suppressed the salt-sensitive phenotype of cnbD yeast cells, and sequencing analysis revealed that these are 9 genes, including CaS, AtSUMO1 and AtHB-12. Among these genes, the ectopic expression of CaS gene increased salt tolerance in yeast, and CaS transcript was up-regulated under high salinity conditions. CaS-antisense transgenic plants showed reduced root elongation under 100 mM NaCl treatment compared to the wild type plant, which survived under 150 mM NaCl treatment, whereas CaS-antisense transgenic plant leaves turned yellow under 150 mM NaCl treatment. These results indicate that the expression of CaS gene is important for stress tolerance in yeast and plants.
A Ten-Year Analytical Comparative Study on the International Journal of Consumer Studies
Dongjin Shin 한국유통과학회 2014 유통과학연구 Vol.12 No.7
Purpose - This study analyzes topics discussed in the International Journal of Consumer Studies through a content analysis, to reveal the impact of cross-cultural management in consumer research. Research Design, Data, and Methodology - The International Journal of Consumer Studies has the highest impact factor among international consumer journals, and was chosen for research. This study investigated 712 articles, covering a ten-year period. Results - A total of 82 articles were found to be related to cross-cultural management, out of 712 articles. This shows a need for improvement in the area of cross-cultural management, and implies that the discipline of cross-cultural management will continue to have a significant impact on consumer studies. Conclusions - While content analyses have been conducted in the area of consumer research in the past, a comparative content analysis in the International Journal of Consumer Studies is unprecedented. This study offers insights on the comparative analysis of general articles and articles related to cross-cultural management, which will be useful reference points for future global markets and fields in distribution and consumer research.
우리나라 TSR Service Operators의 발전 방향에 관한 연구
장동진(Dongjin Jang),신한원(Hanwon Shin),신영란(Youngran Shin) 한국항만경제학회 2011 韓國港灣經濟學會誌 Vol.27 No.4
최근 동북아시아지역의 교역규모가 급성장함에 따라 동북아시아 경제권이 세계경제에서 점유하는 비중이 점차 늘어나고 있다. 이러한 대륙 국가들과의 주요 연결로서 가장 큰 구심점 역할을 하고 있는 것이 Trans Siberian Railway(TSR) 등이라고 할 수 있다. TSR 이용의 경우 국내 도로운송과 부산항과 극동 러시아 항만간 해상운송, 대륙횡단철도, 최종목적지 도착이후의 도로운송을 포함하고 있어 항공운송을 제외한 복합운송의 전 영역에 걸쳐 있으며 최근 들어 국내 철도 화물운송을 활성화시켜 대륙횡단철도와 연계하여 운영하는 것에 대한 방안도 활발하게 논의되고 있다. 따라서 본 연구는 첫째, 러시아 및 중앙아시아향(向) 화물 운송의 선봉장 역할을 하고 있는 우리나라 TSR Service Operator들의 특징 및 역할을 파악하고 둘째,TSR Service Operator SWOT 분석으로 대변되는 대내?외적인 환경 분석과 우리나라 TSR Service Operator의 현황을 분석하고 셋째, 이를 바탕으로 우리나라 TSR Service Operator가 지속적인 경쟁우위를 확보하고 유지할 수 있는 발전 방향을 제시하는데 그 목적이 있다. The Northeast Asia has been the fastest growing region in the world for the past few decades. And now the economic bloc maintains its status as a major powerhouse of the world economy. On the way of its economic growth, Russia and Central Asian countries have emerged as major trading partners. The Trans- Siberian Railway(TSR) has been playing a pivotal role in promoting economic cooperation between the two regions. This paper investigates economic environment of the Korean TSR service operators through the SWOT analysis, then proposes management strategies for them. For this purpose, the authors analyze characteristics and roles of the TSR service operators. In addition, a comparison of difference between service operators and shippers about their recognition of economic environment of the TSR transportation service is also carried out.
입력 영상과 후처리를 이용한 변이 지도 영상의 개선 및 객체 분할
신동진(Dongjin Shin),최민수(Minsoo Choi),한동일(Dongil Han) 대한전자공학회 2006 대한전자공학회 학술대회 Vol.2006 No.11
Robots have been used to perform in many ways for a long time. To be used to perform like these various tasks, they are supposed to be equipped with stereo vision system which is able to segment objects and to calculate distance information. These tasks could be performed by calculating the distance and object segmentation through the stereo vision system. But, there are lots of noises and errors in real life of disparity map image which is captured by using a stereo camera so we can’t trust the result obtained from this disparity map image. In this paper, we present a method which is able to improve the stereo image by comparing with input image. Then we propose a method which segments the object by using the improved disparity map images.