연구논문 : 자연과학 ; 벼 Ac,Ds 삽입 변이체집단의 표현형 분석을 통한 유전자기능 연구

윤웅한 ( Ung Han Yoon ) 한국국제농업개발학회 2012 韓國國際農業開發學會誌 Vol.24 No.1

Rice is one of the world`s most important crops, particularly in Asia, for human consumptions. Rice consumption has been increased due to versatility of nutrients and tastes. In addition, Rice has taken a role of model plant since the small size of the genome was completely sequenced (Jun et al., 2002, Feng et al., 2002). To increase higher yield potentials of crops, the discovery of novel genes and the construction of QTL maps should be essential projects in genomic researches. This study has been carried out to construct the database for the insertional mutant population generated by Ac/Ds transposable element system. In addition, the biological functions of genes useful for agriculture have been studied and the possibility to create new varieties through the biotechnological method have been exploited. The data and information obtained through this study could be used as a basis for intellectual property and be helpful for breeding to select useful gene as analyzing gene function analysis. This project is performed to develop internationally competitive scale of insertional mutagenized population, and to construct databases of molecular information on Ds insertion sites. Ultimate goals are to supply genetic materials and informations essential for functional analysis of rice genes and for breeding using agronomically important genes.

연구보문 : 자연과학 ; 자포니카 벼의 종자 저장단백질 유전자 구조 및 발현분석 연구 현황

윤웅한 ( Ung Han Yoon ),이정화 ( Jeong Hwa Lee ),이강섭 ( Gang Seob Lee ),김영미 ( Young Mi Kim ),한장호 ( Jang Ho Hahn ),지현소 ( Hyeon So Ji ),윤성원 ( Sung Won Yoon ),이종렬 ( Jong Yeol Lee ),김태호 ( Tae Ho Kim ) 한국국제농업개발학회 2012 韓國國際農業開發學會誌 Vol.24 No.3

Based on the outcome of the rice genome sequencing, a lot of researches for identification of genes underlying useful traits and their utilization are being carried out recently. Especially, rice seed storage proteins are used as a main nutrition source for human while they are used as the nitrogen source for plant growth during seed germination. Rice seed storage proteins are divided by solubility in solvent into weak acid and alkali soluble glutelin, alcohol soluble prolamin, and salt soluble globulin. The rice genome contains 11 glutelin genes and 33 prolamin genes. In the case of prolamin genes, 15 genes are located in 15 Mb region on the chromosome 5. Clustering of seed storage protein genes on the same chromosomal region indicates that they are evolved from the same chromosome or they share similar gene expression regulatory region. Only single globulin gene existed on the chromosome 5. As a result of tissue- specific expression pattern analysis of seed storage protein genes using microarray, glutelin and most of prolamin genes were expressed only in seed endosperm, while a few prolamin and the globulin genes are expressed in seed endosperm and germinating seed. As a result of isolating promoter regions of the seed storage protein genes and analyzing their expression pattern in seed, glutelin type C1 promoter showed expression in whole seed, and glutelin type B5 and α-globulin promoter showed strong expression. This paper reviewed on the structure and expression profile of rice seed storage protein genes, and will provide information on the recent research status to the researchers who are studying on the improvement of seed traits and production of substances.

벼 microarray를 이용한 유전자발현 profiling 연구동향

윤웅한,김연기,김창국,한장호,이태호,김동헌,이강섭,박수철,남백희,Yoon, Ung-Han,Kim, Yeon-Ki,Kim, Chang-Kug,Hahn, Jang-Ho,Kim, Dong-Hern,Lee, Tae-Ho,Lee, Gang-Seob,Park, Soo-Chul,Nahm, Baek-Hie 한국식물생명공학회 2010 식물생명공학회지 Vol.37 No.2

As the International Rice Genome Sequencing Project (IRGSP) was completed in 2005 and opened to the public, many countries are making a lot of investments in researches on the utilization of sequence information along with system development. Also, the necessity of the functional genomics researches using microarray is increased currently to secure unique genes related with major agricultural traits and analyze metabolic pathways. Microrarray enables efficient analysis of large scale gene expression and related transcription regulation. This review aims to introduce available microarrays made based on rice genome information and current status of gene expression analysis using these microarrays integrated with the databases available to the public. Also, we introduce the researches on the large scale functional analysis of genes related with useful traits and genetic networks. Understanding of the mechanism related with mutual interaction between proteins with co-expression among rice genes can be utilized in the researches for improving major agricultural traits. The direct and indirect interactions of various genes would provide new functionality of rice. The recent results of the various expression profiling analysis in rice will promote functional genomic researches in plants including rice and provide the scientists involved in applications researches with wide variety of expression informations.

일본의 식물유전체 연구현황 및 전망

윤웅한 ( Ung Han Yoon ),이정화 ( Jeong Hwa Lee ),이강섭 ( Gang Seob Lee ),김영미 ( Young Mi Kim ),지현소 ( Hyeon So Ji ),김태호 ( Tae Ho Kim ) 한국국제농업개발학회 2011 韓國國際農業開發學會誌 Vol.23 No.5

In Japan, plant genomics research is mainly leaded by the national research institutes. The various structural studies such as rice genome has allowed researchers to analyze useful traits, and to focus their commercialization. With aims to facilitate structural and functional study in plant genome, NIAS (National Institute of Agrobiological Sciences) constructed Poaceae genome DB and RIKEN (Rikagaku Kenkyusho) built DB for Arabidopsis genome and plant full-length cDNA. NIG (National Institute of Genetics) constructed a national biological resources DB (National Bio Resource Project). This compiling DB provides a variety of genome-related research materials for researchers in the field. Recently, as an effort to resolve global issues of food supply and environmental problems, New Agri-genome Project has been performed aiming to develop an innovative agricultural technologies for the quantity, disease resistance and identifying useful genes related to environmental problems. In addition, in order to improve agricultural productivity in developing countries, JIRCAS assisted technical supports for the plant genome research and developed NERICA rice, which is suitable for African area. Such these approaches are expected to contribute to solving the global issues about food, energy and environment in the world.

고구마 생명공학연구 현황과 조건 불리지역 분자육종 전망

김호수,윤웅한,이찬주,김소은,지창윤,곽상수,Kim, Ho Soo,Yoon, Ung-Han,Lee, Chan-Ju,Kim, So-Eun,Ji, Chang Yoon,Kwak, Sang-Soo 한국식물생명공학회 2018 식물생명공학회지 Vol.45 No.3

고구마는 식량뿐만 아니라 전분을 비롯하여 카로티노이드, 비타민C, 비타민E, 안토시아닌과 같은 저분자 항산화물질을 생산하는 중요한 산업용 뿌리작물로 건조 등 조건 불리지역에 적용이 가능한 최고의 전분작물로 각광받고 있다. 이러한 관점에서 중국, 일본을 비롯한 세계 각국에서 오믹스 기반 유용유전자 발굴 및 활용에 대한 연구가 활발히 진행되고 있다. 또한 2014년부터 한 중 일 고구마연구협의회(TRAS)를 중심으로 Xushu 18(6배체) 고구마 유전체 해독 연구가 진행되고 있으며 거의 완성단계에 이르고 있다. 향후 고구마 유전체 해독이 완성되면 오믹스 기반 연구결과와 더불어 전분대사, 항산화물질 대사, 환경스트레스, 기능성 등의 기작에 관여하는 유용유전자 분리 및 활용 연구의 활성화에 기여할 것이며 6배체 고구마 유전체 해독 연구는 식물 유전체 해독에 있어 가장 문제시되는 다배수체 식물의 유전체 해독 문제해결에 가장 큰 기여를 할 것으로 기대 된다. 본 논문은 현재까지 연구된 고구마 생명공학 연구 현황과 조건 불리지역 분자육종 전망에 대해 기술하였다. 이러한 연구 동향 분석은 고구마를 활용한 글로벌 식량, 에너지, 환경문제 해결을 위한 실용화 연구에 도움이 될 것으로 생각된다. Dramatic increase in global population accompanied by rapid industrialization in developing countries has led to serious environmental, food, energy, and health problems. The Food and Agriculture Organization of the United Nations has estimated world population will increase to 9.7 billion by 2050 and require approximately 1.7 times more food, and more than 3.5 times energy than that of today. Particularly, sweetpotato is easy to cultivate in unfavorable conditions such as heat, drought, high salt, and marginal lands. In this respect, sweetpotato is an industrially valuable starch crop. To replace crops associated with these food and energy problems, it is necessary to develop new crops with improved nutrients and productivity, that can be grown on marginal lands, including desertification areas using plant biotechnology. For this purpose, exploring useful genes and developing genetically modified crops are essential strategies. Currently, sweetpotato [Ipomoea batatas (L.) Lam.] have been re-evaluated as the best health food and industrial crop that produces starch and low molecular weight antioxidants, such as vitamin A, vitamin E, anthocyanins and carotenoids. This review will focus on the current status of research on sweetpotato biotechnology on omics including genome sequencing, transcriptome, proteomics and molecular breeding. In addition, prospects on molecular breeding of sweetpotato on marginal lands for sustainable development were described.

식물 유전자 연구의 최근 동향

조용구,우희종,윤웅한,김홍식,우선희,Cho, Yong-Gu,Woo, Hee-Jong,Yoon, Ung-Han,Kim, Hong-Sig,Woo, Sun-Hee 한국식물생명공학회 2010 식물생명공학회지 Vol.37 No.2

As the completion of genome sequencing, large collection of expression data and the great efforts in annotating plant genomes, the next challenge is to systematically assign functions to all predicted genes in the genome. Functional genome analysis of plants has entered the high-throughput stage. The generations and collections of mutants at the genome-wide level form technological platform of functional genomics. However, to identify the exact function of unknown genes it is necessary to understand each gene's role in the complex orchestration of all gene activities in the plant cell. Gene function analysis therefore necessitates the analysis of temporal and spatial gene expression patterns. The most conclusive information about changes in gene expression levels can be gained from analysis of the varying qualitative and quantitative changes of messenger RNAs, proteins and metabolites. New technologies have been developed to allow fast and highly parallel measurements of these constituents of the cell that make up gene activity. We have reviewed currently employed technologies to identify unknown functions of predicted genes including map-based cloning, insertional mutagenesis, reverse genetics, chemical mutagenesis, microarray analysis, FOX-hunting system, gene silencing mutagenesis, proteomics and chemical genomics. Recent improvements in technologies for functional genomics enable whole-genome functional analysis, and thus open new avenues for studies of the regulations and functions of unknown genes in plants.

Ac/Ds 삽입 변이체를 이용한 벼 유전자 기능 연구

이강섭,박성한,윤도원,안병옥,김창국,한창덕,이기환,박동수,은무영,윤웅한,Lee, Gang-Seob,Park, Sung-Han,Yun, Do-Won,Ahn, Byoung-Ohg,Kim, Chang-Kug,Han, Chang-Deok,Yi, Gi-Hwan,Park, Dong-Soo,Eun, Moo-Young,Yoon, Ung-Han 한국식물생명공학회 2010 식물생명공학회지 Vol.37 No.2

Rice is the staple food of more than 50% of the worlds population. Cultivated rice has the AA genome (diploid, 2n=24) and small genome size of only 430 megabase (haploid genome). As the sequencing of rice genome was completed by the International Rice Genome Sequencing Project (IRGSP), many researchers in the world have been working to explore the gene function on rice genome. Insertional mutagenesis has been a powerful strategy for assessing gene function. In maize, well characterized transposable elements have traditionally been used to clone genes for which only phenotypic information is available. In rice endogenous mobile elements such as MITE and Tos (Hirochika. 1997) have been used to generate gene-tagged populations. To date T-DNA and maize transposable element systems has been utilized as main insertional mutagens in rice. A main drawback of a T-DNA scheme is that Agrobacteria-mediated transformation in rice requires extensive facilities, time, and labor. In contrast, the Ac/Ds system offers the advantage of generating new mutants by secondary transposition from a single tagged gene. Revertants can be utilized to correlate phenotype with genotype. To enhance the efficiency of gene detection, advanced gene-tagging systems (i.e. activation, gene or enhancer trap) have been employed for functional genomic studies in rice. Internationally, there have been many projects to develop large scales of insertionally mutagenized populations and databases of insertion sites has been established. Ultimate goals of these projects are to supply genetic materials and informations essential for functional analysis of rice genes and for breeding using agronomically important genes. In this report, we summarize the current status of Ac/Ds-mediated gene tagging systems that has been launched by collaborative works from 2001 in Korea.

NGS 기반 밀양23호/기호벼 재조합자식 유전집단(MGRIL)을 이용한 CAPS 마커 개발 및 줄기 굵기 형질 관련 QTL 분석

이예지(Ye-Ji Lee),변은주(Eun-Ju Byeon),배선화(Seon-Hwa Bae),지현소(Hyeonso Ji),이강섭(Gang-Seob Lee),윤웅한(Ung-Han Yoon),김태호(Tae-Ho Kim) 한국육종학회 2016 한국육종학회지 Vol.48 No.3

The rice recombinant inbred lines derived from Milyang23 and Gihobyeo cross were used in genetic mapping and QTL analysis studies. In this study, we developed a new 101 CAPS markers based on the SNPs in the whole genome region between these varieties. As a result, the total genetic distance and average distances were 1,696.97 cM and 3.64 cM, respectively. In comparison to the distance of the previous genetic map constructed based on 365 DNA markers, the new genetic map was found to have a decreased distance. The map was applied for the detection of QTLs on all seven traits relevant to diameter of stem internode, length of culms, length of panicles and the number of panicles including the correlation analysis between each trait. The QTLs results were similar to the report in previous studies, whereas the distance between the markers was narrowed and accuracy increased with the addition of 101 CAPS markers. A total of 9 new QTLs were detected for stem internode traits. Among them, qI1D-6 had higher LOD of 5.1 and phenotype variation of 50.92%. In this experiment, a molecular map was constructed with CAPS markers using next generation sequencing showing high accuracy for markers and QTLs. In the future, developing more accurate QTL information on stem internode diameters with various agriculturally important traits will be possible for further rice breeding.