HORI Kiyosumi
(Associate Professor/Division of Biosciences)
Department of Integrated Biosciences/Rice Applied Genetics
Career Summary
2004: Graduated from Graduate School of Natural Science and Technology, Okayama University
2004: Received Ph.D from Okayama University
2004-06: Postdoctoral fellow (Research Institute for Bioresources, Okayama University)
2006-11: Researcher (National Institute of Agrobiological Sciences)
2011-16: Principal Researcher (National Institute of Agrobiological Sciences)
2016-17: Principal Researcher (Institute of Crop Science, National Agriculture and Food Research Organization)
2017: Senior Researcher (Institute of Crop Science, National Agriculture and Food Research Organization)
2019: Associate Professor (Department of Integrated Biosciences, University of Tokyo)
Educational Activities
Graduate school:Applied Bioresource Sciences
Research Activities
Rice is cultivated all around the world and shows numerous morphological and physiological differences in the form of phenotypic variations. Some of these variations have been used as genetic resources to improve rice plants so that they better satisfy human needs. Phenotypic variations are considered to be genetically controlled by the collective function of a large number of genes on rice genomes. However, the genetic bases and biological functions of most of them are still unknown, which has prevented us from wider practical application of rice germplasms. We exploit useful phenotypic variations from a wide range of rice germplasms and clarify the genes involved with biological functions by aid of recent advances in genome information and technology. We have detected a lot of quantitative trait loci (QTLs) and identified their responsibe genes for agronomically important traits such as flowering time, eating quality, grain yield, disease resistance and stress tolerance of rice by using segregating populations derived from crosses between indica and japonica rice cultivars. Also, we try to develop new breeding materials and propose more effective breeding methodologies.
Literature
1?jIijima K, Suzuki K, Hori K et al. (2019) Endosperm enzyme activity is responsible for texture and eating quality of cooked rice grains in Japanese cultivars. Bioscience, Biotechnology, and Biochemistry. 83(3):502-510.
2) Hori K (2018) Genetic dissection and breeding for grain appearance quality in rice. Rice Genomics, Genetics and Breeding pp.435-451.
3) Hori K, Yamamoto T, Yano M (2017) Genetic dissection of agronomically important traits in closely related temperate japonica rice cultivars. Breeding Science 67(5):427-434.
4) Shibaya T, Hori K, Ogiso-Tanaka E et al. (2016) Hd18, Encoding histone acetylase related to Arabidopsis FLOWERING LOCUS D, is involved in the control of flowering time in rice. Plant and Cell Physiology 57(9):1828-1838.
5) Hori K, Suzuki K, Iijima K et al. (2016) Variation in cooking and eating quality traits in Japanese rice germplasm accessions. Breeding Science 66(2):309-318.
6) Hori K, Nonoue Y, Ono N et al. (2015) Genetic architecture of variation in heading date among Asian rice accessions. BMC Plant Biology 15:115.
7) Hori K, Ogiso-Tanaka E, Matsubara K et al. (2013) Hd16, a gene for casein kinase I, is involved in the control of rice flowering time by modulating the day-length response. The Plant Journal 76(1):36-46.
8) Hori K, Yano M (2013) Genetic improvement of grain quality in Japonica rice. Translational Genomics for Crop Breeding: Abiotic Stress, Yield and Quality vol2. pp.143-160.
9) Hori K, Kataoka T, Miura K et al. (2012) Variation in heading date conceals quantitative trait loci for other traits of importance in breeding selection of rice. Breeding Science 62(3):223-234.
10) Tanabata T, Shibaya T, Hori K et al. (2012) SmartGrain: high-throughput phenotyping software for measuring seed shape through image analysis. Plant Physiology 160(4):1871-1880.
11) Matsubara K, Ogiso-Tanaka E, Hori K et al. (2012) Natural variation in Hd17, a homolog of Arabidopsis ELF3 that is involved in rice photoperiodic flowering. Plant and Cell Physiology 53(4):709-716.
12) Hori K, Sugimoto K, Nonoue Y et al. (2010) Detection of quantitative trait loci controlling pre-harvest sprouting resistance by using backcrossed populations of japonica rice cultivars. Theoretical and Applied Genetics 120(8):1547-1557.
13) Hori K, Yamamoto T, Ebana K et al. (2009) A novel quantitative trait locus, qCL1, involved in semi-dwarfism derived from Japanese rice cultivar Nipponbare. Breeding Science 59(3):285-295.
Other Activities
Japanese Society of Breeding, Japanese Society for Bioscience, Biotechnology, and Agrichemistry
Editorial Board in the Rice journal (ISSN: 1939-8433)
Future Plan
I would like to reveal genetic architecture of agronomically important traits in rice cultivars, such as eating and grain quality. I'm also trying to apply the results of fundamental research to developing novel rice cultivars.
Messages to Students
'Be international for doing excellent research'. I hope you will join us in our research team for achieving the next Agricultural Revolution.