1. Divisions of Forest Diseases and Insect Pests and Wood Chemistry and Microbiology, Korea Forest Research Institute, Seoul 130-712, Republic of Korea, Hansol Homedeco Co. Ltd., 7th Floor, Hansol Building, 736-1, Yoksam-Dong, Kangnam-gu, Seoul 135-080, Republic of Korea, and School of Agricultural Biotechnology, College of Agriculture and Life Sciences, Seoul National University, Seoul 151-742, Republic of Korea