Centers & Labs

RIKEN Center for Sustainable Resource Science

Regulatory Network Research Unit

Unit Leader: Ryoung Shin (Ph.D.)
Ryoung  Shin(Ph.D.)
  1. Dissection of signaling cascades in plant response to potassium
    Our unit aims to elucidate the components of plant potassium sensing and deficiency signaling in Arabidopsis using various approaches.
  2. Characterization of potassium/sodium channels in various systems
    Potassium and sodium have similar chemical property that belong to alkali I metal group. In order to understand how seaweeds but not land plants survive in salt water, we are studying differences of sodium channels and potassium channels between algae and dicotyledonous land plants.
  3. Development of new methods for radiocesium remediation and analyses of regulatory components for phytoremediation
    In order to develop efficient phytoremediation system for radioactive cesium in Fukushima area, we aim to develop plants which selectively and more (less) efficiently absorb cesium from contaminated soil. In addition, chemical screenings to elucidate the chemicals which affect cesium uptake in plants has been conducted. From the results obtained, the regulatory components of cesium uptake in plants are being studied.
  4. Development of rice with improved nitrogen-use efficiency and elucidation of regulatory mechanisms of plant nutrient utilization
    Nitrogen (N) is the major nutrient for plant growth, and lack of N has entailed increased use of N fertilizers. However, increased fertilizer usage does not result in comparable production increase. Furthermore, excess fertilizer run-off creates soil pollution, and growing ecological awareness necessitates new solutions to increase agricultural production without endangering the environment. Another pressing matter is the achievement of food security via sustainable agriculture. As one solution to these issues, we aim to develop rice plants that grow well under nitrogen-limited conditions and efficiently utilize other macronutrients.

Main Research Field


Related Research Fields

Environmental science / Agricultural sciences

Research Subjects

  • Dissecting signaling cascades in plant response to nutrient deprivation
  • Elucidating regulatory mechanisms to develop rice with improved nitrogen-use efficiency
  • Characterizing ion channels in plants and seaweed
  • Developing phytoremediation methods by analyzing regulatory components to reduce cesium uptake

Selected Publications

Papers with an asterisk(*) are based on research conducted outside of RIKEN.
  1. Adams, E., Chanban, V., Khandelia, H., and Shin, R.:
    "Selective chemical binding enhances cesium tolerance in plants through inhibition of cesium uptake"
    Sci. Rep. 5:8842 (2015).
  2. Akamatsu, M,. Komatsu, H., Mori, T., Adams, E., Shin, R., Sakai, H., Abe, M., Hill, J.P., and Ariga, K.:
    "Intracellular Imaging of cesium distribution in Arabidopsis using cesium green".
    ACS Appl. Mater. Inter. 6:8208-8211 (2014).
  3. Adams, E., Diaz, C., Hong, J.-P., and Shin, R.:
    "14-3-3 proteins participate in light signalling through association with PHYTOCHROME INTERACTING FACTORs"
    Int. J. Mol. Sci. 15: 22801-22814 (2014).
  4. Adams, E., Diaz, C., Matsui, M., and Shin, R.:
    "Overexpression of a novel component induces HAK5 and enhances growth in Arabidopsis"
    ISRN Bot. 490252: 9: (2014).
  5. Hong, J.-P., Takeshi, Y., Kondou, Y., and Schachtman, D.P., Matsui, M., and Shin, R.:
    "Identification and characterization of transcription factors regulating Arabidopsis HAK5"
    Plant Cell Physiol. 54:1478-1490 (2013).
  6. Adams, E., Abdollahi, P., and Shin, R.:
    "Cesium inhibits plant growth through jasmonate signalling in Arabidopsis thaliana"
    Int. J. Mol. Sci. 14:4545-4559 (2013).
  7. Nam, Y.J., Tran, L.-S.P. Nishiyama, R., Kojima, M., Sakakibara, H., and Shin, R.:
    "Regulatory roles of cytokinins and cytokinin signaling in response to potassium deficiency in Arabidopsis"
    PLOS One 7:e47797 (2012).
  8. Diaz, C., Kusano, M., Sulpice, R., Mitsutaka, A., Redestig, H., Saito, K., Stitt, M. and Shin, R.:
    "Determining novel functions of Arabidopsis 14-3-3 proteins in central metabolic processes"
    BMC Systems Biol. 5:192 (2011).
  9. * Shin, R., Burch, A.Y., Huppert, K.A., Tiwari, S.B., Murphy, A.S., Guilfoyle, T.J., Schachtman, D.P.:
    "The Arabidopsis transcription factor MYB77 modulates auxin signal transduction"
    Plant Cell 19: 2440-2453 (2007).
  10. * Shin, R., Alvarez, S., Burch, A.Y., Jez, J.M., Schachtman, D.P.:
    "Phosphoproteomic identification of targets of the Arabidopsis sucrose nonfermenting-like kinase SnRK2.8 reveals a connection to metabolic processes"
    Proc. Natl. Acad. Sci. U.S.A. 104: 6460-6465 (2007).

Lab Members

Principal Investigator

Ryoung Shin
Unit Leader

Core Members

Eri Adams
Research Scientist
Takae Miyazaki
Technical Staff II
Hajime Takiguchi
Technical Staff II

Contact information

C604 Central Research Building, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama City, Kanagawa, 230-0045, Japan

Email: Ryoung.Shin [at]

Related links

Recent research results