Plant Symbiosis Research Team

Team Leader

Makoto Hayashi

Ph.D.

Makoto Hayashi

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1996
Ph.D., University of Tokyo
1997
Assistant Professor, Osaka University
2006
Professor, Ludwig-Maximilians Universität München
2008
Unit Head, National Institute of Agrobiological Sciences
2009
Visiting Professor, University of Tokyo
2014
Team Leader, Plant Symbiosis Research Team, RIKEN Center for Sustainable Resource Science (-current)

Contact

makoto.hayashi

Plant Symbiosis Research Team,
RIKEN Center for Sustainable Resource Science

1-7-22 Suehiro, Tsurumi, Yokohama, Kanagawa 230-0045 Japan
Access to Yokohama

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Outline

Nitrogen is the most heavily used fertilizer in the present agriculture. Its production and use however damage the ecosystem due to the emission of greenhouse gases. Soil bacteria called rhizobia infect legume roots, and fix atmospheric nitrogen in root nodules. Consequently, if cereals such as rice, corn and wheat establish symbiosis with rhizobia, we can dramatically reduce the use of nitrogen fertilizer, resulted in ecosystem-friendly, sustainable agriculture. In order to achieve our goal, we aim to confer the ability to fix nitrogen on cereals, by elucidating molecular-genetic and biochemical functions of nodulation and symbiotic nitrogen fixation, as well as by investigating evolutionary aspects of legume-rhizobia symbiosis.

Subjects

  1. Elucidation of molecular genetic mechanisms in nodulation
  2. Identification of molecular components in symbiotic nitrogen fixation
  3. Application of root nodule symbiosis to cereals
Development of nodule structure by activation of NIN, the central regulator of nodule organogenesis
Infected cells in the nodule filled with symbiotic bacteroids