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Plant Genome Evolution Research Team

Leadar's Photo
Team Leader
Hiroyuki ICHIDAPh.D.
  • 1989年東北大学大学院農学研究科農学専攻修了
    東北大学遺伝生態研究センター 遺伝子多様性研究部門 日本学術振興会特別研究員
  • 1990年理化学研究所 薬剤作用研究室 基礎科学特別研究員
  • 1991年同 研究員
  • 1993年同 植物機能研究室 研究員
  • 2006年同 仁科加速器研究センター加速器応用研究グループ生物照射チ−ム副チームリーダー
  • 2008年同 加速器応用研究室生物照射チーム チームリーダー
  • 2010年同 加速器応用研究室 室長

Research Areas

Coevolved since the prehistoric period, plant and microbes have been indispensable in our daily lives. Heavy-ion beams produce a wide variety of mutations from small, single nucleotide substitutions to large inter-chromosomal rearrangements in plant and microbial genomes, thus artificially accelerating the process of evolution. We develop and operate a highly efficient genome analysis platform with cutting-edge sequencing technologies, analyze mutants’ genomes in different organisms, and establish the theory and practical applications of “mutagenesis 2.0” to contribute to the future of plant and microbial breeding.

List of Selected Publications

  1. Tabassum, R., Dosaka, T., Ichida, H., Morita, R., Ding, Y., Abe, T., and Katsube-Tanaka, T.
    “FLOURY ENDOSPERM11–2 encodes plastid HSP70-2 involved with temperature dependent chalkiness of rice (Oryza sativa L.) grains”
    The Plant Journal, 103, 604–616, 2020.
  2. Oono, Y., Ichida, H., Morita, R., Nozawa, S, Satoh, K., Shimizu, A., Abe, T., Kato, H., and Hase, Y.
    “Genome sequencing of ion-beam-induced mutants facilitates detection of candidate
    genes responsible for phenotypes of mutants in rice”
    Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis, 821, 111691, 2020.
  3. Morita, R.†, Ichida, H.†, Ishii, K., Hayashi, Y., Abe, H., Shirakawa, Y., Ichinose, K., Tsuneizumi, K., Kazama, T., Toriyama, K., Sato, T., and Abe, T. †equally contributed co-first authors
    “LONG GRAIN 1: a novel gene that regulates grain length in rice”
    Molecular Breeding, 39, article number 135 (8 pp), 2019.
  4. Ichida, H., Morita, R., Shirakawa, Y., Hayashi Y., Abe, T.
    “Targeted exome sequencing of unselected heavy-ion beam-irradiated populations reveals less-biased mutation characteristics in the rice genome”
    The Plant Journal, 98, 301–314, 2019.
  5. Ichida, H. and Abe, T.
    “An improved and robust method to efficiently deplete repetitive elements from complex plant genomes”
    Plant Science, 280, 455–460, 2019.
  6. Murata, H., Abe, T., Ichida, H., Hayashi, Y., Yamanaka, T., Shimokawa, T., and Tahara, K.
    “Heavy-ion beam mutagenesis of the ectomycorrhizal agaricomycete Tricholoma matsutake that produces the prized mushroom ‘matsutake’ in conifer forests”
    Mycorrhiza, 28, 171–177, 2018.
  7. Yamamoto, Y.Y., Ichida, H., Hieno, A., Daich, O., Tokizawa, M., Nomoto, M., Tada, Y., Kusunoki, K., Koyama, H., and Hayami, N.
    “Prediction of bipartite transcriptional regulatory elements using transcriptome data of Arabidopsis”
    DNA Research, 24, 271–278, 2017.
  8. Sato, Y., Hirano, T., Ichida, H., Murakami, M., Fukunishi, N., Abe, T., and Kawano, S.
    “Morphological and physiological differences among cultivation lines of Undaria pinnatifida in a common garden experiment using a tank culture system”
    Journal of Applied Phycology, 29, 2287–2295, 2017.
  9. Ichida, H. and Long, S.R.
    “LDSS-P: an advanced algorithm to extract functional short motifs associated with coordinated gene expression”
    Nucleic Acids Research, 44, 5045–5053, 2016.
  10. Ichida, H., Matsuyama, T., Ryuto, H., Hayashi, Y., Fukunishi, N., Abe, T., and Koba, T.
    Molecular characterization of microbial mutations induced by ion beam irradiation
    Mutation Research, 639, 101–107, 2008.