A5074900111- Genetic Mapping and Diversity in Plants and Animals
- Rice Cultivation and Yield Improvement
- GABA and Rice Research
- Wheat and Barley Genetics and Pathology
- Genetics and Plant Breeding
- Plant Molecular Biology Research
- Plant Disease Resistance and Genetics
- Food composition and properties
- Plant Genetic and Mutation Studies
- Plant Pathogens and Fungal Diseases
- Mycotoxins in Agriculture and Food
- Soybean genetics and cultivation
- Crop Yield and Soil Fertility
- Plant Gene Expression Analysis
- Chromosomal and Genetic Variations
- Bioenergy crop production and management
- Phytase and its Applications
- Microbial Metabolites in Food Biotechnology
- Plant Stress Responses and Tolerance
- Seed Germination and Physiology
- Microbial Metabolism and Applications
- Plant Reproductive Biology
- Livestock Management and Performance Improvement
- Genetic diversity and population structure
- Agricultural Systems and Practices
Institute of Crop Science
2016-2025
National Agriculture and Food Research Organization
2016-2025
Institute of Agrobiological Sciences
2010-2022
University of Tsukuba
2012
Hitachi (Japan)
2011
Okayama University
2003-2008
Okayama Prefectural Kurashiki Chuo High School
2006-2008
Okayama Prefecture
2006
Abstract Seed shape and size are among the most important agronomic traits because they affect yield market price. To obtain accurate seed data, a large number of measurements needed there is little difference in seeds from one plant. promote genetic analysis selection for plant breeding, efficient, reliable, high-throughput phenotyping methods required. We developed SmartGrain software measurement shape. This uses new image method to reduce time taken preparation capture. Outlines...
Flowering time of rice depends strongly on photoperiodic responses. We previously identified a quantitative trait locus, Heading date 17 (Hd17), that is associated with difference in flowering between Japanese (Oryza sativa L.) cultivars. Here, we show the may result from single nucleotide polymorphism within putative gene encodes homolog Arabidopsis EARLY FLOWERING 3 protein, which plays important roles maintaining circadian rhythms. Our results demonstrate natural variation Hd17 change...
Abstract Full-length cDNA (FLcDNA) libraries consisting of 172,000 clones were constructed from a two-row malting barley cultivar (Hordeum vulgare ‘Haruna Nijo’) under normal and stressed conditions. After sequencing the both ends clustering sequences, total 24,783 complete sequences produced. By removing duplicates between these publicly available 22,651 representative obtained: 17,773 novel FLcDNAs, 1,699 specific. Highly conserved genes found in FLcDNA for 721 881 rice (Oryza sativa)...
The alteration of photoperiod sensitivity has let breeders diversify flowering time in Oryza sativa (rice) and develop cultivars adjusted to a range growing season periods. Map-based cloning revealed that the rice flowering-time quantitative trait locus (QTL) Heading date 16 (Hd16) encodes casein kinase-I protein. One non-synonymous substitution Hd16 resulted decreased rice, this occurred naturally an old cultivar. By using near-isogenic lines with functional or deficient alleles several...
Abstract Over the past two decades, genetic dissection of complex phenotypes economic and biological interest has revealed chromosomal locations many quantitative trait loci (QTLs) in rice their contributions to phenotypic variation. Mapping resolution varied considerably among QTL studies owing differences population size number DNA markers used. Additionally, same QTLs have often been reported with different locus designations. This situation made it difficult determine allelic...
Abstract Target-site and non-target-site herbicide tolerance are caused by the prevention of binding to target enzyme reduction a nonlethal dose reaching enzyme, respectively. There is little information on molecular mechanisms involved in tolerance, although it poses greater threat evolution herbicide-resistant weeds could potentially be useful for production herbicide-tolerant crops because often multiherbicides. Bispyribac sodium (BS) an that inhibits activity acetolactate synthase. Rice...
Much progress has been made in our understanding of photoperiodic flowering rice and the mechanisms underlying short-day (SD) promotion long-day (LD) repression floral induction. In this study, we identified characterized Ef7 gene, one orthologs Arabidopsis EARLY FLOWERING 3 (ELF3). The ef7 mutant HS276, which was induced by γ-irradiation japonica cultivar 'Gimbozu', flowers late under both SD LD conditions. Expression analyses time-related genes demonstrated that negatively regulates...
We performed GWAS for starch properties and eating, cooking appearance quality characteristics traits in rice then used PLS regression to show importance of different loci food applications. a genome-wide association study appearance, eating grain japonica cultivars identified candidate genes adhesiveness cooked grains, amylopectin composition β-glucanase activity endosperm among total 525 quantitative trait nucleotide (QTN) loci. The 1,054,635 single-nucleotide polymorphisms (SNPs) based on...
The eating quality of cooked rice is important and determines its market price consumer acceptance. To comprehensively describe the variation in 183 germplasm accessions, we evaluated 33 eating-quality traits including amylose protein contents, pasting properties flour, texture grains. All varied widely accessions. Principal-components analysis (PCA) revealed that allelic differences Wx gene explained largest proportion phenotypic traits. In 146 accessions non-glutinous temperate japonica...
To dissect the genetic factors controlling naturally occurring variation of heading date in Asian rice cultivars, we performed QTL analyses using F2 populations derived from crosses between a japonica cultivar, Koshihikari, and each 12 cultivars originating various regions Asia. These diverse varied under natural field conditions Tsukuba, Japan. Transgressive segregation was observed 10 combinations. multiple revealed comprehensive series loci involved flowering time. One to four QTLs were...
Grain shape is an important trait for improving rice yield. A number of quantitative loci (QTLs) this have been identified by using primary F2 mapping populations and recombinant inbred lines, in which QTLs with a small effect are harder to detect than they would be advanced generations. In study, we developed two (chromosome segment substitution lines [CSSLs] BC4F2 consisting more 2000 individuals) the genetic backgrounds improved cultivars: japonica cultivar (Koshihikari) short, round...
Flowering time is one of the most important agronomic traits in rice (Oryza sativa L.), because it defines harvest seasons and cultivation areas, affects yields. We used a map-based strategy to clone Heading date 18 (Hd18). The difference flowering between Japanese cultivars Koshihikari Hayamasari was due single nucleotide polymorphism within Hd18 gene, which encodes an amine oxidase domain-containing protein homologous Arabidopsis FLOWERING LOCUS D (FLD). allele knockdown gene expression...
SUMMARY Improving crop yield potential through an enhanced response to rising atmospheric CO 2 levels is effective strategy for sustainable production in the face of climate change. Large‐sized panicles (containing many spikelets per panicle) have been a recent ideal plant architecture (IPA) high‐yield rice breeding. However, few breeding programs proposed IPA under projected Here, we demonstrate cloning ( Oryza sativa ) quantitative trait locus MORE PANICLES 3 MP3 that improvement panicle...
To identify the chromosomal regions controlling eating quality of Koshihikari rice, we performed a quantitative trait locus (QTL) analysis using two backcross inbred lines (BILs): N-BILs (79 derived from cross Nipponbare/Koshihikari//Nipponbare) and K-BILs (89 Nipponbare/Koshihikari//Koshihikari). We evaluated several components cooked namely glossiness, taste, stickiness, hardness, overall evaluation, based on sensory tests by trained panel, amylose protein contents. Ten QTLs for these were...