- 2004 - 2012 岡山大学自然科学研究科バイオサイエンス専攻 教授
- 2004 - 2012 Professor,Bioscience,Graduate School of Natural Science and Technology,Okayama University
- 2012 - - 岡山大学環境生命科学研究科 教授
- 2012 - - Professor,Graduate School of Environmental and life Science,Okayama University
- 2003 - 2004 Okayama University Faculty of Agriculture, Department of Agricultural Sciences
- 2003 - 2004 Professor,Dept. of Agricultural Sciences,Faculty of Agriculture,Okayama University
- 1992 - 2003 Okayama University Faculty of Agriculture, Department of Agricultural Sciences
- 1992 - 2003 Associate Professor,Dept. of Agricultural Sciences,Faculty of Agriculture,Okayama University
- 2002 - University of Oxford
- 1997 - スイス フリードリッヒ ミーシャー研究所 文部省在外研究員
- 1992 - 1993 アメリカ合衆国 国立衛生研究所 客員研究員
- 1992 - 1993 Research Associate,Ntional Institutes of Health (N.I.H.)
- 1987 - 1992 Okayama University Faculty of Agriculture, Department of Agricultural Sciences
- 1987 - 1992 Assistant Professor,Dept. of Agricultural Sciences,Faculty of Agriculture,Okayama University