A5008132047- Genetic Mapping and Diversity in Plants and Animals
- GABA and Rice Research
- Rice Cultivation and Yield Improvement
- Plant Molecular Biology Research
- Plant Disease Resistance and Genetics
- Photosynthetic Processes and Mechanisms
- Plant responses to water stress
- Plant Gene Expression Analysis
- Plant Reproductive Biology
- Genetics and Plant Breeding
- Plant tissue culture and regeneration
- Chromosomal and Genetic Variations
- Light effects on plants
- Plant Genetic and Mutation Studies
- Plant Pathogenic Bacteria Studies
- CRISPR and Genetic Engineering
- Genomics and Phylogenetic Studies
- Wheat and Barley Genetics and Pathology
- Plant-Microbe Interactions and Immunity
- Genetic and phenotypic traits in livestock
- Phytochemicals and Antioxidant Activities
- Plant nutrient uptake and metabolism
- Plant biochemistry and biosynthesis
- Transgenic Plants and Applications
- Plant Stress Responses and Tolerance
Seoul National University
2015-2025
Pusan National University
2023-2024
Texas A&M University
2021
Abstract Cytoplasmic chloroplast (cp) genomes and nuclear ribosomal DNA (nR) are the primary sequences used to understand plant diversity evolution. We introduce a high-throughput method simultaneously obtain complete cp nR using Illumina platform whole-genome sequence. applied 30 rice specimens belonging nine Oryza species. Concurrent phylogenomic analysis of several same AA genome species provides insight into evolution domestication cultivated rice, clarifying three ambiguous but...
Rice yield is a complex trait that strongly affected by environment and genotype × interaction (GEI) effects. Consideration of GEI in diverse environments facilitates the accurate identification optimal genotypes with high performance, which are adaptable to specific or environments. In this study, multiple trials were conducted evaluate grain (GY) four yield-component traits: panicle length, number, spikelet number per panicle, thousand-grain weight. Eighty-nine rice varieties cultivated...
Abstract Background Segregation distortion (SD) is a frequently observed occurrence in mapping populations generated from crosses involving divergent genotypes. In the present study, ten genetic linkage maps constructed reciprocal F 2 and BC 1 derived parents Dasanbyeo ( indica ) Ilpumbyeo japonica were used to identify distribution, effect, magnitude of factors underlying mechanisms SD between two subspecies. Results loci detected study affected by male function, female zygotic selection....
Understanding late pollen development, including the maturation and pollination process, is a key component in maintaining crop yields. Transcriptome data obtained through microarray or RNA-seq technologies can provide useful insight into those developmental processes. Six series of from public transcriptome database, Gene Expression Omnibus National Center for Biotechnology Information, are related to anther development. We performed systematic functional study across rice genome genes that...
Tongil (IR667-98-1-2) rice, developed in 1972, is a high-yield rice variety derived from three-way cross between indica and japonica varieties. contributed to the self-sufficiency of staple food production Korea during period known as 'Korean Green Revolution'. We analyzed nucleotide-level genome structure compared it those parental varieties.A total 17.3 billion Illumina Hiseq reads, 47× coverage, were generated for rice. Three accessions two types one type, also sequenced at approximately...
Abstract Molecular markers are efficient and essential genotyping tools for molecular breeding genetic analysis of rice. We developed two 96-plex indica – japonica single nucleotide polymorphism (SNP) sets in rice using the Fluidigm platform. Informative SNPs between were selected from SNP data Rice Diversity database, HapRice world Q-TARO our 40 cultivar resequencing dataset. set 1 evenly distributed across all 12 chromosomes at a spacing 4–5 Mb adjacent SNPs. 2 mapped to long intervals...
Gene editing by use of clustered regularly interspaced short palindromic repeats (CRISPR) has become a powerful tool for crop improvement. However, common bottleneck in the application this approach to grain crops, including rice (Oryza sativa), is efficient vector delivery and calli regeneration, which can be hampered genotype-dependent requirements plant regeneration. Here, methods Agrobacterium-mediated biolistic transformation regeneration indica were optimized using CRISPR-Cas9...
Bottlenecks in plant transformation and regeneration have slowed progress applying CRISPR/Cas-based genome editing for crop improvement. Rice (Oryza sativa L.) has highly efficient temperate japonica protocols, along with reasonably indica protocols using immature embryos. However, rapid are not available tropical varieties, even though they represent the majority of rice production U.S. South America. The current study optimized a protocol callus induction from mature seeds both...
Grain size is one of the key factors determining yield and quality in rice. A large number genes are involved regulation grain parameters such as length width. Different alleles these have different impacts on traits under their control. However, combined influence multiple remains to be investigated. Six known were investigated this study: GS3, GS5, GS6, GW2, qSW5/GW5, GW8/OsSPL16. Allele measurement data used develop a regression equation model that can for molecular breeding rice with...
Starch biosynthesis is one of the most important pathways that determine both grain quality and yield in rice (Oryza sativa L.). Sugary endosperm, sugary-1 (sug-1), a mutant trait for starch biosynthesis. Rice plants carrying sug-1 produce grains accumulate water-soluble carbohydrates instead starch, even after maturity. Although this enhances diversity quality, sugary endosperm has hardly been commercialized due to severely wrinkled subsequent problems milling. This study was conducted...
Although embryo accounts for only 2-3% of the total weight a rice grain, it is good source various nutrients human health. Because enlarged size causes increase amount and bioactive compounds stored within giant mutants (Oryza sativa L.) are excellent genetic resources improving nutritional value grains.Three mutants, including large (le), (ge) super-giant (ges), with variable were used in this study. We investigated whether genes controlling these (le, ge ges) allelic to each other. ges was...
Lesion mimic mutants (LMMs) commonly exhibit spontaneous cell death similar to the hypersensitive defense response that occurs in plants pathogen infection. Several lesion have been isolated and characterized, but their molecular mechanisms remain largely unknown. Here, a spotted leaf sheath (sles) mutant derived from japonica cultivar Koshihikari is described. The sles phenotype differed of other LMMs spots were observed on rather than leaves. displayed early senescence, as shown, by color...
Novel mutations of OsCOP1 were identified to be responsible for yellowish pericarp and embryo lethal phenotype, which revealed that plays a crucial role in flavonoid biosynthesis embryogenesis rice seed. Successful production viable seeds is major component plant life cycles, seed development complex, highly regulated process affects characteristics such as viability color. In this study, three yellowish-pericarp (yel) mutants, yel-hc, yel-sk, yel-cc, produced from different japonica...
Abstract CONSTITUTIVE PHOTOMORPHOGENIC 1 (COP1), an E3 ubiquitin ligase, functions as a central repressor of light signaling and regulates various light-mediated developmental metabolic processes in plants. However, detailed mechanisms underlying COP1-regulated flavonoid biosynthesis embryogenesis rice seeds remain largely unknown. Here, we performed transcriptome analysis the cop1 ( yellowish - pericarp embryo lethal [ yel ]) null mutant, characterized by accumulation abnormal development...
Pre-harvest sprouting (PHS) of rice (Oryza sativa L.) causes severe economic problems due to reduced grain quality and yield. Fine mapping was carried out identify genes associated with PHS; the detected quantitative trait locus (QTL) narrowed down 50 Kbp using F3:4 populations, four polymorphic insertion deletion (InDel) markers, two cleaved amplified sequence (CAPS) markers. In one region, five candidate were detected, SNP InDel in each gene (Os01g0111400 Os01g0111600) confirmed show...
Chang-Kug Kim, Sang-Ho Chu, Han Yong Park, Jeonghwan Seo, Backki Gileung Lee, Hee-Jong Koh, and Joong Hyoun Chin. Plant Breeding Biotechnology 2017;5:371-89. https://doi.org/10.9787/PBB.2017.5.4.371
Floral organ number is crucial for successful seed setting and mature grain development. Although some genes signaling pathways controlling floral have been studied, the underlying mechanism complicated requires further investigation. In this study, a mutant was generated by ethyl methanesulfonate treatment of Korean japonica rice cultivar Ilpum. mutant, 37% spikelets showed an increase in organs, especially stamens pistils. Histological analysis revealed that ovaries determined stigmas;...
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Abstract Rice eating quality is considered to be one of the top priorities in determining agronomical value rice; thus, rapid evaluation at early breeding generations programmes for better great importance. In an attempt develop DNA markers associated with indica rice, we used multiple regression analysis test 54 markers, which were preselected their possible association quality, using 24 varieties different palatability scores. Of these eighteen found significantly according sensory...