Centers & Labs

RIKEN BioResource Research Center

Microbe Division (RIKEN BRC JCM)

Head: Moriya Ohkuma (Ph.D.)
Moriya  Ohkuma(Ph.D.)

The Microbe Division in RIKEN-BRC has been collecting, preserving, standardizing, and distributing cultured microbial strains since established as Japan Collection of Microorganisms (JCM) in 1981. Our mission is to contribute to scientific communities in a variety of research fields by maintaining and serving high-quality microbial resources useful for general microbial studies and researches related to environmental and human health issues. As a research and development laboratory, we are also working to continuously improve our function as a microbial resource center, to develop new microbial resources, to describe novel microbial taxa, and to investigate microbial communities and yet-uncultured microorganisms.

Main Research Field

Microbiology

Related Research Fields

Biology & Biochemistry / Molecular Biology & Genetics / Agricultural Sciences / Environment & Ecology

Research Subjects

  • Collection, preservation, quality control, and distribution of microbial strains
  • Development of microbial resources for environmental and health researches
  • Isolation and characterization of new microbial strains
  • Studies on microbial communities and yet-uncultured microorganisms

Selected Publications

  1. Yuki, M., Sakamoto, M., Nishimura, Y., and Ohkuma, M.:
    Lactococcus reticulitermitis sp. nov., isolated from the gut of the subterranean termite Reticulitermes speratus
    Int. J. Syst. Evol. Microbiol. 68: 596-601 (2018)
  2. Noda, S., Shimizu, D., Yuki, M., Kitade, O., and Ohkuma, M.:
    ”Host-symbiont cospeciation of termite-gut cellulolytic protists of the genera Teranympha and Eucomonympha and their Treponema endosymbionts”
    Microbes Environ. 33: 26-33 (2018)
  3. Suzuki, S., Endoh, R., Manabe, R., Ohkuma, M., and Hirakawa, Y.:
    ”Multiple losses of photosynthesis and convergent reductive genome evolution in the colourless green algae Prototheca
    Sci. Rep. 8: 940 (2018)
  4. Sakamoto, M., Iino, T., and Ohkuma, M.:
    Faecalimonas umbilicata gen. nov., sp. nov., isolated from human faeces, and reclassification of Eubacterium contortum, Eubacterium fissicatena and Clostridium oroticum as Faecalicatena contorta gen. nov., comb. nov., Faecalicatena fissicatena comb. nov. and Faecalicatena orotica comb. nov.”
    Int. J. Syst. Evol. Microbiol. 67: 1219-1227 (2017)
  5. Kuwahara, H., Yuki, M., Izawa, K., Ohkuma, M., and Hongoh, Y.:
    “Genome of ‘Ca. Desulfovibrio trichonymphae’, an H2-oxidizing bacterium in a tripartite symbiotic system within a protist cell in the termite gut.”
    ISME J. 11: 766-776 (2017)
  6. Lee, C. G., Iida, T., Uwagaki, Y., Otani, Y., Nakaho, K., and Ohkuma, M.:
    ”Comparison of prokaryotic and eukaryotic communities in soil samples with and without tomato bacterial wilt collected from different fields”
    Microbes Environ. 32: 376–385 (2017)
  7. Nakazawa, S., Haramiishi, A., Fukuda, K., Kanayama, Y., Watanabe, T., Yuki, M., Ohkuma, M., Takeda, K., Kimbara, K., and Shintani, M.:
    ”Different transferability of incompatibility (Inc) P-7 plasmid pCAR1 and IncP-1 plasmid pBP136 in stirring liquid conditions”
    PLoS ONE 12: e0186248 (2017)
  8. Itoh, T., Onishi, M., Kato, S., Iino, T., Sakamoto, M., Kudo, T., Takashina, T., and Ohkuma, M.:
    Athalassotoga saccharophila gen. nov., sp. nov., isolated from an acidic terrestrial hot spring, and proposal of Mesoaciditogales ord. nov. and Mesoaciditogaceae fam. nov. in the phylum Thermotogae
    Int. J. Syst. Evol. Microbiol. 66: 1045-1051 (2016)
  9. Sriswasdi, S., Takashima, M., Manabe, R., Ohkuma, M., Sugita, T., and Iwasaki, W.:
    “Global deceleration of gene evolution following recent genome hybridizations in fungi”
    Genome Res. 26: 1081-1090 (2016)
  10. Ohkuma, M., Noda, S., Hattori, S., Iida, T., Yuki, M., Starns, D., Inoue, J., Darby, A.C., and Hongoh, Y.:
    “Acetogenesis from H2 plus CO2 and nitrogen fixation by an endosymbiotic spirochete of a termite-gut cellulolytic protist”
    Proc. Natl. Acad. Sci. USA 112: 10224-10230 (2015)

Lab Members

Principal Investigator

Moriya Ohkuma
Head

Core Members

Takuji Kudo
Senior Research Scientist
Takashi Itoh
Senior Research Scientist
Toshiya Iida
Senior Research Scientist
Mitsuo Sakamoto
Senior Research Scientist
Takao Iino
Senior Research Scientist
Tsutomu Oowada
Senior Technical Scientist
Rikiya Endo
Research & Development Scientist
Masahiro Yuki
Research & Development Scientist
Shingo Kato
Research & Development Scientist
Yuki Nishimura
Postdoctoral Researcher
Akira Hashimoto
Postdoctoral Researcher
Gen Okada
Special Temporary Research Scientist
Yumi Oshida
Technical Staff II
Kouji Suzu
Technical Staff II

Organization