1. 1Department of Microbial Resources, Graduate School of Agricultural Sciences, Tohoku University, Sendai, Miyagi 980-0845, Japan
2. 2Hazaka Plant Research Center, Kennan Eisei Kogyo Co., Ltd, Miyagi 989-1311, Japan
3. 3Comparative Genomics Laboratory, National Institute of Genetics, Mishima, Shizuoka 411-8540, Japan