1Department of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Republic of Korea, 2Hankuk Academy of Foreign Studies, Yongin 449-791, Republic of Korea1Department of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Republic of Korea, 2Hankuk Academy of Foreign Studies, Yongin 449-791, Republic of Korea
Corresponding author:
Dong-Hyun Kang , Tel: +82-2-880-2697;,