1. Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST) , Tsukuba, Japan
2. Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO) , Tsukuba, Japan
3. Comparative Genomics Laboratory, National Institute of Genetics (NIG) , Mishima, Japan
4. School of Life Science and Technology, Tokyo Institute of Technology , Meguro-ku, Japan
5. Department of Biological Sciences, Graduate School of Science, University of Tokyo , Bunkyo-ku, Japan
6. Graduate School of Life and Environmental Sciences, University of Tsukuba , Tsukuba, Japan