1. Department of Biological Engineering, Inha University, Incheon 402-751, Republic of Korea
2. Nanoelectronics Research Institute, National Institute of Advanced Industrial Science and Technology, 1-1 Higashi, Tsukuba, Ibaraki 305-8562, Japan
3. Department of Biology, Faculty of Science, Ankara University, Tandogan, Ankara 06100, Turkey
4. Department of Plant Biology and Biotechnology, University of Copenhagen, Copenhagen, Denmark