A5024302373- Chromosomal and Genetic Variations
- Plant Molecular Biology Research
- Plant Disease Resistance and Genetics
- Plant Virus Research Studies
- Plant tissue culture and regeneration
- Plant Gene Expression Analysis
- Photosynthetic Processes and Mechanisms
- Genomics and Chromatin Dynamics
- Plant nutrient uptake and metabolism
- Soybean genetics and cultivation
- Phytochemicals and Antioxidant Activities
- Genetic Mapping and Diversity in Plants and Animals
- Epigenetics and DNA Methylation
- Nitrogen and Sulfur Effects on Brassica
- Plant Pathogenic Bacteria Studies
- Immune Response and Inflammation
- Plant Stress Responses and Tolerance
- Genetics and Plant Breeding
- Plant Pathogens and Fungal Diseases
- Plant Ecology and Taxonomy Studies
- Genetic diversity and population structure
- Quality and Supply Management
- Plant Genetic and Mutation Studies
- Plant Reproductive Biology
- Light effects on plants
Seoul National University
1997-2022
Kunsan National University
2011
Transposable elements are major evolutionary forces which can cause new genome structure and species diversification. The role of transposable in the expansion nucleotide-binding leucine-rich-repeat proteins (NLRs), disease-resistance gene families, has been unexplored plants.We report two high-quality de novo genomes (Capsicum baccatum C. chinense) an improved reference (C. annuum) for peppers. Dynamic rearrangements involving translocations among chromosomes 3, 5, 9 were detected...
DNA methylation plays an important role in diverse developmental processes many eukaryotes, including the response to environmental stress. Abscisic acid (ABA) is a plant hormone that up-regulated under The involvement of ABA has been reported but poorly understood. demethylation reverse process and often induces structural changes chromatin leading transcriptional activation. In Arabidopsis (Arabidopsis thaliana), active depends on activity REPRESSOR OF SILENCING 1 (ROS1), which directly...
DNA methylation is a primary epigenetic modification regulating gene expression and chromatin structure in many eukaryotes. Plants have unique demethylation system that 5-methylcytosine (5mC) directly removed by demethylases, such as DME/ROS1 family proteins, but little known about the downstream events. During 5mC excision, DME produces 3′-phosphor-α, β-unsaturated aldehyde 3′-phosphate successive β- δ-eliminations, respectively. The kinetic studies revealed these 3′-blocking lesions...
Zoysiagrass (Zoysia japonica Steud.) is commonly found in temperate climate regions and widely used for lawns, part, owing to its uniform green color. However, some zoysiagrass cultivars accumulate red purple pigments their spike stolon tissues, thereby decreasing the aesthetic value. Here we analyzed anthocyanin contents of two 'Anyang-jungji' (AJ) 'Greenzoa' (GZ) that produce spikes stolons with colors, respectively, revealed cyanidin petunidin were primarily accumulated pigmented tissues....
The Arabidopsis DEMETER (DME) DNA glycosylase demethylates the maternal genome in central cell prior to fertilization and is essential for seed viability. DME preferentially targets small transposons that flank coding genes, influencing their expression initiating plant gene imprinting. also intergenic heterochromatic regions, but how it recruited these differing chromatin landscapes unknown. C-terminal half of consists 3 conserved regions required catalysis vitro. We show this catalytic...
Root skin color is one of the economically important traits in radish (Raphanus sativus), and pigmentation red varieties largely attributable to anthocyanin accumulation. Pelargonidin was found as a major pigment accumulated sub-epidermal layer roots. In 20 F2 population generated from F1 with root skins, skins white colors segregated 3:1 ratio. Additionally, test cross between F3 individual gave rise 1:1 segregation white, indicating that determined by single locus dominant over white. We...
Hybridization and polyploidization are major driving forces in plant evolution. Allopolyploids can be occasionally formed from a cross between distantly related species but often suffer chromosome instability infertility. xBrassicoraphanus is an intergeneric allotetraploid (AARR; 2n=38) derived Brassica rapa (AA; 2n=20) Raphanus sativus (RR; 2n=18). fertile genetically stable, while retaining complete sets of both B. R. chromosomes. Precise control meiotic recombination essential for the...
Plant somatic cells can be reprogrammed into pluripotent cell mass, called callus, through a two-step in vitro tissue culture method. Incubation on callus-inducing medium triggers active proliferation to form callus. Notably, DNA methylation is implicated during callus formation, but detailed molecular process regulated by remains fully elucidated. Here, we compared genome-wide profiles between leaf and tissues Arabidopsis using whole-genome bisulphite-sequencing. Global distribution of...
Abstract Background Heterosis is biologically important but the molecular basis of phenomenon poorly understood. We characterized intergeneric hybrids between B. rapa cv. Chiifu and R. sativus WK10039 as an extreme example heterosis. Taking advantage clear heterosis phenotypes genetic distance parents, we performed transcriptome metabolite analysis to decipher Results The was expressed fresh weight in field inflorescence stem length glass house. Flowering time, distributed a normal...
Abstract Background Hybridization and polyploidization events are important driving forces in plant evolution. Allopolyploids formed between different species can be naturally or artificially created but often suffer from genetic instability infertility successive generations. x Brassicoraphanus is an intergeneric allopolyploid obtained a cross Brassica rapa Raphanus sativus , providing useful resource for genomic study hybrid species. Objective The current aims to understand the cause of...
Summary Transposable elements (TEs) provide major evolutionary forces leading to new genome structure and species diversification. However, the role of TEs in expansion disease resistance gene families has been unexplored plants. Here, we report high-quality de novo genomes for two peppers ( Capsicum baccatum C. chinense ) an improved reference annuum ). Dynamic rearrangements involving translocations among chromosome 3, 5 9 were detected comparison between other peppers. The amplification...
Hybridization and polyploidization are pivotal to plant evolution. Genetic crosses between distantly related species rare in nature due reproductive barriers but how such hurdles can be overcome is largely unknown. Here we report the hybrid genome structure of xBrassicoraphanus, a synthetic allotetraploid Brassica rapa Raphanus sativus. We performed cytogenetic analysis de novo assembly examine chromosome behaviors integrity hybrid. Transcriptome was conducted investigate expression...
Abstract Maize is the second-most produced crop in Korean peninsula and has been continuously cultivated since middle of 16th century, when it was originally introduced from China. Even with this extensive cultivation history, diversity properties landraces have not investigated at nucleotide sequence level. We collected 12 various flowering times performed RNA-seq early vegetative stage. The transcriptomes analyzed for their genetic variations coding relationships to other maize germplasm....
This is a report on the history and current status of production planning control activities in South Korea with regard to Industrial Engineers' (IEs') role. One main characteristics Korean global companies that they make good use IEs not only their but also higher strategic fields like supply chain management. In these it well demonstrated instead adding small part IE skills traditional engineers, much more competitive have work them as team since are fully proficient every kind...
Strawberry is an important fruit crop and a model for studying non-climacteric ripening. Fruit ripening senescence influence strawberry quality postharvest storability, have been intensively studied. However, genetic physiological differences among cultivars preclude consensus understanding of these processes. We therefore performed meta-analysis by mapping existing transcriptome data to the newly published improved reference genome extracted meta-differentially expressed genes (meta-DEGs)...
We succeeded in producing mature seed from a line of Brassica rapa ssp. pekinensis that had been hybridized with Raphanus sativus var. major. Our focus was on dominance B. pekinensis; radish (R. major) no influence. Marker tests for similarity showed the original CR291M-64 x HwiM-2 hybrid an inbred CR291M-64, rather than genuine cross; this appears to have resulted weak self-incompatibility strain. The plants bloomed reddish flowers differently shown up present. intergeneric between and very...
본 논문에서는 적응 배열 안테나 시스템에서 간섭 및 재밍 신호를 제거하기 위해서 최적 가중 벡터를 연구하였다. 벡터는 선형 제한 조건에서 최소 분산 알고리즘과 비용함수를 적용시켜 구하였고, 목표물의 정확히 추정하였다. 시스템은 재머전력을 감소시키고 신호대 잡음비를 향상시키는 시스템이다. 각 소자의 출력이 탭(Tap)을 거쳐 지연되고 탭에 복소 가중치가 곱해져서 최종적으로 하나의 복합신호를 만든다. 최적의 가중치를 구하기 입력 공분산 행렬의 가중벡터를 이용하였다. 논문에서 제안된 알고리즘으로 모의 실험한 결과 분해능은 <TEX>$3^{\circ}$</TEX>이하로 향상되었으며 부엽은 약 10 dB 감소하였음을 입증하였다. The optimum weight vector is studied to remove interference and jamming signals in adaptive array antenna system. calculated apply a minimum...