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[PA-0008] Assembly and Analysis of the Complete mitogenome of Silybum marianum
Jeongwoo Lee(Jeongwoo Lee),Yedomon Ange Bovys Zoclanclounon(Yedomon Ange Bovys Zoclanclounon ),Hwajin Jung(Hwajin Jung),Taeho Lee(Taeho Lee),Jeonggu Kim(Jeonggu Kim),Guhwang Park(Guhwang Park),Keunpyo 한국육종학회 2022 한국육종학회 공동학술발표집 Vol.2022 No.-
Cloning and characterization of a gene encoding ABP57, a soluble auxin-binding protein
Keunpyo Lee,Myung-Il Kim,Yu-Jihn Kwon,Minkyun Kim,김용삼,Donghern Kim 한국식물생명공학회 2009 Plant biotechnology reports Vol.3 No.4
Auxin-binding protein 57 (ABP57), a soluble auxin-binding protein, acts as a receptor to activate plasma membrane (PM) H?-ATPase. Here, we report the cloning of abp57 and the biochemical characterization of its protein expressed in E. coli. The analysis of internal amino acid sequences of ABP57 purified from rice shoots enabled us to search for the corresponding gene in protein DB of NCBI. Further BLAST analysis showed that rice has four abp57- like genes and maize has at least one homolog. Interestingly, Arabidopsis seems to have no homolog. Recombinant ABP57 expressed in E. coli caused the activation of PM H?-ATPase regardless of the existence of IAA. Scatchard analysis showed that the recombinant protein has relatively low affinity to IAA as compared to natural ABP57. These results collectively support the notion that the cloned gene is responsible for ABP57.
Lee Jeongran,Lee Keunpyo,Kang Kyung-Ho,Oh Jeong Ho,Mamadou Sock,Baboucarr Manneh,Lee Sang Bok 한국국제농업개발학회 2022 한국국제농업개발학회 학술대회 Vol.2022 No.09
The Korea-Africa Food and Agriculture Cooperation Initiative (KAFACI) has been cooperating with AfricaRice since 2014 for the eradication of hunger and poverty in Africa through sustainable agriculture and its industrialization. At first, rice breeding activities for staple food production started with KAFACI member countries by sharing high-yielding Tongil-type rice breeding lines and varieties. The Africa Rice Development Partnership project entitled “Enhancement of high-yielding rice germplasm and breeding capacity of rice producing countries in Africa” is implemented for the period from 2016 to 2025 with three phases. The actual rice breeding activities have been conducted by applying anther culture haploid breeding technology in the laboratory and field of AfricaRice Saint-Louis center. The 1,547 elite lines selected through participatory variety selection were distributed to 21 national breeders of KAFACI member countries. These lines derived from the 1,181 cross combination and 34,616 breeding lines on Korea and AfricaRice germplasm crossed. Among them 11 new Tongil-type rice varieties have been selected and registered in the national variety catalogue of Senegal, Mali, Rwanda, Malawi, and Tanzania.
Lee Jeongran,Lee Keunpyo,Kang Kyung-Ho,Oh Jeong Ho,Mamadou Sock,Baboucarr Manneh,Lee Sang Bok 한국국제농업개발학회 2022 한국국제농업개발학회 학술대회 Vol.2022 No.09
Sustainable capacity building of the rice value chain in Africa is essential in achieving the rice self-sufficiency and poverty alleviation. The breeding capacity enhancement has also been at the heart of AfricaRice’s mandate. Therefore, the Korea-Africa Food and Agriculture Cooperation Initiative (KAFACI) has concentrated breeding capacity enhancement for young breeders or breeding technicians of national research institutes in the KAFACI member countries. Four-month trainings have been conducted at the Regional Training Center located in Saint Louis, Senegal. The actual practice training is as follows; First is to learn practical skills and techniques of key aspects of rice breeding which are field preparation and layout, sowing, transplanting, fertilizer application, weed control, water management, hybridization/crossing, selection, yield and yield components determination, and rice palatability testing. Second is to learn some theoretical aspects of plant breeding through lectures including basic principles of breeding, evaluation for biotic and abiotic stresses, and statistical analysis. Third is to learn about the accurate use of field and lab equipment for rice breeding. Forth is to learn about proper scientific reporting and presentation. The courses were organized twice per year following two rice cultivation seasons in Senegal. From 2019, a total of 24 trainees participated in the 4 month courses. We believe they have acquired the basic knowledge and skills to implement rice breeding activities indpendently in their countries.
Assembly and Comparative Analysis of Complete Mitogenome of Silybum marianum (L.) Gaertner
이정우(Jeongwoo Lee),예도몬(Yedomon Ange Bovys Zoclanclounon ),정화진(Hwajin Jung),이태호(Taeho Lee),김정구(Jeonggu Kim),박규황(Guhwang Park),이근표(Keunpyo Lee),안광훈(Kwanghoon An),심지형(Jeehyoung Shim),진중현(Joonghyoun Chin) 한국육종학회 2022 한국육종학회지 Vol.54 No.4
Silybum marianum (L.) Gaertner. (milk thistle), is a member of the Asteraceae family. Silymarin has hepatoprotective effects, accumulates at high levels in the external cover of milk thistle seeds, and is composed of flavonolignan isomers. In the present study, we assembled and annotated the mitogenome of Silybum marianum. This mitogenome was found to have a length of 407,123 base pairs and an overall base composition: A, 27.41%; T, 27.33%; G, 22.72%; and C, 22.54%. Seventy-four unique genes were identified in the Silybum marianum mitogenome based on annotation results, including 27 protein-coding genes, 44 tRNA genes, and 3 rRNA genes. Common protein-coding genes of 11 Asteraceae family references and four outgroup (Campanulaceae and Solanaceae) mitogenomes were used to construct a phylogenetic tree. The phylogenetic tree of the Silybum marianum mitogenome revealed close relationships with three reference mitogenomes (Arctium tomentosum, Arctium lappa, and Saussurea costus), and the flower morphology of Silybum marianum was similar to that of the three reference mitogenomes. This report describes unique features of the Silybum marianum mitogenome relative to the three related reference mitogenomes. In addition, we could envisage a specific analysis of the phylogenetic relationship of Silybum mariaum using additional Asteraceae family mitogenomes.
Fine-Mapping of a Major Quantitative Trait Locus q2ID1 for Rice Stem Diameter
( Ye-ji Lee ),( Yeisoo Yu ),( Hyeonso Ji ),( Gang-sub Lee ),( Nam-in Hyung ),( Keunpyo Lee ),( Tae-ho Kim ) 한국육종학회 2021 Plant Breeding and Biotechnology Vol.9 No.4
Rice culm is an important trait for determining rice lodging yield, and stem diameter has been suggested as a yield-related trait; however, studies for the genetic basis of its phenotypic variation are still required. In this study, we used 160 recombination inbred lines derived from a cross of two different rice varieties [‘Milyang23’ (Tongil rice) and ‘Giho’ (japonica)] for quantitative trait locus (QTL) mapping with nine stem traits. The analysis showed that QTLs for the diameters of the first, second, third and fourth internode traits were independently separated in the top of chromosome 1, whereas four lengths of internodes were estimated as being related to the semidwarf1 (sd1) gene. A major-effect QTL (q2ID1) was identified that the overlapped region of our previous mapping with a large genomic region. Therefore, we performed high-resolution genetic mapping for fine-mapping of q2ID1 to a ~140 kb region between Ind1_1 and Ind1_2 of genetic markers, with candidate genes predicted using a reference genome. We ultimately identified nine of the 15 candidate genes with specific gene functions and analyzed the sequence variations between two parents. These results offer valuable gene and/or genetic information on stem diameter to improve lodging resistance and yield.
Kadiata Olivier,Kang Sinsuk,Lee Jeongran,Lee Keunpyo 한국국제농업개발학회 2022 한국국제농업개발학회 학술대회 Vol.2022 No.09
The Democratic Republic of Congo (DR Congo) is a central African country, abundant with large and various agro-ecological landscapes suitable for the cultivation of various crops, water resources, and a young manpower. However, the country is facing a severe food crisis, exposing around 27 million people, among which 4 million undernourished children to famine according to the World Food Program. To better understand the paradox of the country with huge agricultural potential being one of the countries with the largest number of people in food distress in 2022, we reviewed the DR Congo's current agricultural potentials and challenges, and it was observed that the country's low agricultural productivity is mainly due to low governmental human and technological investment in agricultural research, which is characterized by insufficient training of researchers, limited research budget, and lack of updated technologies. Also, the country's immensity and poor transport infrastructures make the movement and commercialization of crops difficult in the country. Based on the data reviewed, the Korea-Africa Food & Agriculture Cooperation Initiative, an organization in which the DR Congo is a member country, proposes a reform of the country's agricultural policies 1) to set a proper vision for the country's Agricultural research and productivity, 2) to design a proper structure assigning the roles of every organization involved in agriculture at the national or provincial level, 3) to improve the government investment in young researchers' capacity building and motivation, 4) to define how cooperation with international organizations could contribute to the enhancement of the country's agricultural development.