- Yudai Okuyama, Akifumi Tanabe, Makoto Kato. 2011. Entangling ancient allotetraploidization of Asian Mitella (Saxifragaceae). SMBE2011 Kyoto Conference. Kyoto University, Kyoto, Japan.
- Yudai Okuyama, Tomoko Okamoto, Ryutaro Goto, Makoto Kato. 2010. Use of phylogenetic-based multi-species comparison to identify the key determinants in plant-pollinator interactions. Memorial Symposium for the 26th International Prize for Biology hBiology of Symbiosish -Celebrating Dr. Nancy A. Moran-. International Congress Center Epochal Tsukuba, Tsukuba, Ibaraki, Japan.
- Yudai Okuyama, Tomoko Okamoto, Makoto Kato. 2010. Phylogenetic based multi-species comparison revealed a key floral volatile for pollinator isolation in Asian Mitella. International Seminar: Origin and Evolution of Environmental Adaptation-Symbiosis, Cells, Individuals, Populations and Societies. The Graduate University for Advanced Studies. Hayama, Kanagawa, Japan.
- Yudai Okuyama. 2009. Speciation at a single chemical: an extensive multi-species comparison revealed a key floral volatile for pollinator isolation in Asian Mitella. National Museum of Nature and Science, International Symposium. National Museum of Nature and Science, Shinjuku Branch, Shinjuku, Tokyo, Japan.
- Yudai Okuyama, Makoto Kato. 2009. Phylogenetic dissection of pollination syndrome of floral volatiles in Asian Mitella. "Evolution 2009" American Society of Naturalists, Society for the Study of Evolution, and Society of Systematic Biologists, Annual Meetings, University of Idaho, Moscow, ID USA.
- Yudai Okuyama, Hideo Matsumura, Shin-ichi Akimoto, Kentaro Yoshida, Tomoko Okamoto, Makoto Kato, Ryohei Terauchi.@2009. Use of superSAGE to isolate key genes in plant-insect interactions and coevolution. Plant & Animal Genomes XVII Conference, Poster P767, Town & Country Convention Center, San Diego, CA USA.