- Hiroshi HISANO (Institute of Plant Science and Resources, Okayama University)
- Hideki KONDO (Institute of Plant Science and Resources, Okayama University)
- Ryo MATSUSHIMA (Institute of Plant Science and Resources, Okayama University)
- Namiki MITANI (Institute of Plant Science and Resources, Okayama University)
- Takashi YAENO (Ehime University)