1. Joint BioEnergy Institute, Feedstocks Division, Lawrence Berkeley National Laboratory, Emeryville, California 94608
2. Max-Planck-Institute of Molecular Plant Physiology, 14476 Golm, Germany
3. Joint BioEnergy Institute, Technology Division, Lawrence Berkeley National Laboratory, Emeryville, California 94608
4. Forestry and Forest Products Research Institute, Tsukuba, Ibaraki 305-8687, Japan
5. Department of Plant and Microbial Biology, University of California, Berkeley, California 94720