1. Graduate School of Global Food Resources, Hokkaido University, Sapporo, Japan
2. Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
3. School of Agriculture, Hokkaido University, Sapporo, Japan
4. Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin, USA
5. US-DOE Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, Wisconsin, USA
6. Department of Biochemistry, University of Wisconsin-Madison, Madison, Wisconsin, USA
7. GI-CORE, Hokkaido University, Sapporo, Japan